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annotate src/render/software/SDL_renderer_sw.c @ 5159:307ccc9c135e

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Made it possible to create a texture of any format, even if not supported by the renderer. This allows me to reduce the set of formats supported by the renderers to the most optimal set, for a nice speed boost.
author Sam Lantinga <slouken@libsdl.org>
date Thu, 03 Feb 2011 00:19:40 -0800
parents fb424691cfc7
children 657543cc92f9
rev   line source
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2010 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22 #include "SDL_config.h"
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23
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24 #include "../SDL_sysrender.h"
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25 #include "../../video/SDL_pixels_c.h"
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26
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27
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28 /* SDL surface based renderer implementation */
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29
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30 static SDL_Renderer *SW_CreateRenderer(SDL_Window * window, Uint32 flags);
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31 static void SW_WindowEvent(SDL_Renderer * renderer,
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32 const SDL_WindowEvent *event);
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33 static int SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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34 static int SW_SetTextureColorMod(SDL_Renderer * renderer,
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35 SDL_Texture * texture);
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36 static int SW_SetTextureAlphaMod(SDL_Renderer * renderer,
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37 SDL_Texture * texture);
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38 static int SW_SetTextureBlendMode(SDL_Renderer * renderer,
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39 SDL_Texture * texture);
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40 static int SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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41 const SDL_Rect * rect, const void *pixels,
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42 int pitch);
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43 static int SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
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44 const SDL_Rect * rect, void **pixels, int *pitch);
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45 static void SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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46 static int SW_RenderDrawPoints(SDL_Renderer * renderer,
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47 const SDL_Point * points, int count);
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48 static int SW_RenderDrawLines(SDL_Renderer * renderer,
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49 const SDL_Point * points, int count);
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50 static int SW_RenderFillRects(SDL_Renderer * renderer,
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51 const SDL_Rect ** rects, int count);
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52 static int SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
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53 const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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54 static int SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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55 Uint32 format, void * pixels, int pitch);
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56 static int SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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57 Uint32 format, const void * pixels, int pitch);
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58 static void SW_RenderPresent(SDL_Renderer * renderer);
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59 static void SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture);
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60 static void SW_DestroyRenderer(SDL_Renderer * renderer);
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61
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62
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63 SDL_RenderDriver SW_RenderDriver = {
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64 SW_CreateRenderer,
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65 {
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66 "software",
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67 (SDL_RENDERER_PRESENTVSYNC),
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68 8,
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69 {
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70 SDL_PIXELFORMAT_RGB555,
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71 SDL_PIXELFORMAT_RGB565,
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72 SDL_PIXELFORMAT_RGB888,
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73 SDL_PIXELFORMAT_BGR888,
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74 SDL_PIXELFORMAT_ARGB8888,
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75 SDL_PIXELFORMAT_RGBA8888,
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76 SDL_PIXELFORMAT_ABGR8888,
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77 SDL_PIXELFORMAT_BGRA8888
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78 },
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79 0,
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80 0}
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81 };
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82
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83 typedef struct
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84 {
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85 Uint32 format;
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86 SDL_bool updateSize;
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87 SDL_Texture *texture;
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88 SDL_Surface surface;
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89 SDL_Renderer *renderer;
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90 } SW_RenderData;
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91
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92 static SDL_Texture *
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93 CreateTexture(SDL_Renderer * renderer, Uint32 format, int w, int h)
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94 {
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95 SDL_Texture *texture;
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96
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97 texture = (SDL_Texture *) SDL_calloc(1, sizeof(*texture));
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98 if (!texture) {
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99 SDL_OutOfMemory();
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100 return NULL;
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101 }
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102
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103 texture->format = format;
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104 texture->access = SDL_TEXTUREACCESS_STREAMING;
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105 texture->w = w;
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106 texture->h = h;
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107 texture->renderer = renderer;
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108
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109 if (renderer->CreateTexture(renderer, texture) < 0) {
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110 SDL_free(texture);
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111 return NULL;
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112 }
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113 return texture;
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114 }
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115
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116 static void
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117 DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
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118 {
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119 renderer->DestroyTexture(renderer, texture);
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120 SDL_free(texture);
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121 }
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122
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123 SDL_Renderer *
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124 SW_CreateRenderer(SDL_Window * window, Uint32 flags)
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125 {
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126 SDL_Renderer *renderer;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
127 SW_RenderData *data;
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
128 int i;
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
129 int w, h;
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
130 Uint32 format;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
131 int bpp;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
132 Uint32 Rmask, Gmask, Bmask, Amask;
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
133 Uint32 renderer_flags;
1929
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
134 const char *desired_driver;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
135
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
136 format = SDL_GetWindowPixelFormat(window);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
137 if (!SDL_PixelFormatEnumToMasks
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
138 (format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
139 SDL_SetError("Unknown display format");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
140 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
141 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
142
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
143 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
144 if (!renderer) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
145 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
146 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
147 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
148
1920
8a162bfdc838 Convert SDL_malloc to SDL_calloc if appropriate, slightly faster on operating systems which map the zero page for memory allocations.
Sam Lantinga <slouken@libsdl.org>
parents: 1918
diff changeset
149 data = (SW_RenderData *) SDL_calloc(1, sizeof(*data));
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
150 if (!data) {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
151 SW_DestroyRenderer(renderer);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
152 SDL_OutOfMemory();
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
153 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
154 }
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
155 renderer->WindowEvent = SW_WindowEvent;
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
156 renderer->CreateTexture = SW_CreateTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
157 renderer->SetTextureColorMod = SW_SetTextureColorMod;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
158 renderer->SetTextureAlphaMod = SW_SetTextureAlphaMod;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
159 renderer->SetTextureBlendMode = SW_SetTextureBlendMode;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
160 renderer->UpdateTexture = SW_UpdateTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
161 renderer->LockTexture = SW_LockTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
162 renderer->UnlockTexture = SW_UnlockTexture;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
163 renderer->DestroyTexture = SW_DestroyTexture;
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
164 renderer->RenderDrawPoints = SW_RenderDrawPoints;
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
165 renderer->RenderDrawLines = SW_RenderDrawLines;
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
166 renderer->RenderFillRects = SW_RenderFillRects;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
167 renderer->RenderCopy = SW_RenderCopy;
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
168 renderer->RenderReadPixels = SW_RenderReadPixels;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
169 renderer->RenderWritePixels = SW_RenderWritePixels;
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
170 renderer->RenderPresent = SW_RenderPresent;
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
171 renderer->DestroyRenderer = SW_DestroyRenderer;
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
172 renderer->info = SW_RenderDriver.info;
2227
b252359547ed Exported the software renderer texture functions to make easier to create
Sam Lantinga <slouken@libsdl.org>
parents: 2222
diff changeset
173 renderer->info.flags = 0;
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3599
diff changeset
174 renderer->window = window;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
175 renderer->driverdata = data;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
176
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
177 data->format = format;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
178
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
179 /* Find a render driver that we can use to display data */
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
180 renderer_flags = 0;
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1930
diff changeset
181 if (flags & SDL_RENDERER_PRESENTVSYNC) {
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1930
diff changeset
182 renderer_flags |= SDL_RENDERER_PRESENTVSYNC;
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
183 }
1929
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
184 desired_driver = SDL_getenv("SDL_VIDEO_RENDERER_SWDRIVER");
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
185 for (i = 0; i < SDL_GetNumRenderDrivers(); ++i) {
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
186 SDL_RendererInfo info;
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
187 SDL_GetRenderDriverInfo(i, &info);
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
188 if (SDL_strcmp(info.name, SW_RenderDriver.info.name) == 0) {
1929
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
189 continue;
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
190 }
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
191 if (desired_driver
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
192 && SDL_strcasecmp(desired_driver, info.name) != 0) {
1929
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
193 continue;
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
194 }
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
195 data->renderer = SDL_CreateRenderer(window, i, renderer_flags);
1929
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
196 if (data->renderer) {
595ac54a8f9f Added an environment variable to select which driver the software renderer will use.
Sam Lantinga <slouken@libsdl.org>
parents: 1920
diff changeset
197 break;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
198 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
199 }
5157
fb424691cfc7 Moved the rendering code out to a separate directory in the hope that it can someday be completely decoupled from the rest of the library and be expanded to an awesome 2D on 3D library.
Sam Lantinga <slouken@libsdl.org>
parents: 5152
diff changeset
200 if (i == SDL_GetNumRenderDrivers()) {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
201 SW_DestroyRenderer(renderer);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
202 SDL_SetError("Couldn't find display render driver");
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
203 return NULL;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
204 }
1965
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1930
diff changeset
205 if (data->renderer->info.flags & SDL_RENDERER_PRESENTVSYNC) {
a788656ca29a SDL constants are all uppercase.
Sam Lantinga <slouken@libsdl.org>
parents: 1930
diff changeset
206 renderer->info.flags |= SDL_RENDERER_PRESENTVSYNC;
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
207 }
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
208
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
209 /* Create the textures we'll use for display */
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
210 SDL_GetWindowSize(window, &w, &h);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
211 data->texture = CreateTexture(data->renderer, data->format, w, h);
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
212 if (!data->texture) {
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
213 SW_DestroyRenderer(renderer);
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
214 return NULL;
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
215 }
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
216
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
217 /* Create a surface we'll use for rendering */
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
218 data->surface.flags = SDL_PREALLOC;
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
219 data->surface.format = SDL_AllocFormat(bpp, Rmask, Gmask, Bmask, Amask);
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
220 if (!data->surface.format) {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
221 SW_DestroyRenderer(renderer);
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
222 return NULL;
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
223 }
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
224
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
225 return renderer;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
226 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
227
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
228 static SDL_Texture *
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
229 SW_ActivateRenderer(SDL_Renderer * renderer)
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
230 {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
231 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3599
diff changeset
232 SDL_Window *window = renderer->window;
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
233
1972
a0e278364188 Fixed bug recreating OpenGL textures on window resize
Sam Lantinga <slouken@libsdl.org>
parents: 1971
diff changeset
234 if (data->updateSize) {
a0e278364188 Fixed bug recreating OpenGL textures on window resize
Sam Lantinga <slouken@libsdl.org>
parents: 1971
diff changeset
235 /* Recreate the textures for the new window size */
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
236 int w, h;
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
237 if (data->texture) {
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
238 DestroyTexture(data->renderer, data->texture);
1972
a0e278364188 Fixed bug recreating OpenGL textures on window resize
Sam Lantinga <slouken@libsdl.org>
parents: 1971
diff changeset
239 }
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
240 SDL_GetWindowSize(window, &w, &h);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
241 data->texture = CreateTexture(data->renderer, data->format, w, h);
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
242 if (data->texture) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
243 data->updateSize = SDL_FALSE;
1972
a0e278364188 Fixed bug recreating OpenGL textures on window resize
Sam Lantinga <slouken@libsdl.org>
parents: 1971
diff changeset
244 }
a0e278364188 Fixed bug recreating OpenGL textures on window resize
Sam Lantinga <slouken@libsdl.org>
parents: 1971
diff changeset
245 }
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
246 return data->texture;
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
247 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
248
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
249 static void
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
250 SW_WindowEvent(SDL_Renderer * renderer, const SDL_WindowEvent *event)
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
251 {
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
252 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
253
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
254 if (event->event == SDL_WINDOWEVENT_RESIZED) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
255 data->updateSize = SDL_TRUE;
1970
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
256 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
257 }
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
258
db3ba6c0d0df Allow the render context to do necessary work when the video mode changes.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
259 static int
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
260 SW_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
261 {
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
262 int bpp;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
263 Uint32 Rmask, Gmask, Bmask, Amask;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
264
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
265 if (!SDL_PixelFormatEnumToMasks
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
266 (texture->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
267 SDL_SetError("Unknown texture format");
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
268 return -1;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
269 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
270
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
271 texture->driverdata =
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
272 SDL_CreateRGBSurface(0, texture->w, texture->h, bpp, Rmask, Gmask,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
273 Bmask, Amask);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
274 SDL_SetSurfaceColorMod(texture->driverdata, texture->r, texture->g,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
275 texture->b);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
276 SDL_SetSurfaceAlphaMod(texture->driverdata, texture->a);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
277 SDL_SetSurfaceBlendMode(texture->driverdata, texture->blendMode);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
278
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
279 if (texture->access == SDL_TEXTUREACCESS_STATIC) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
280 SDL_SetSurfaceRLE(texture->driverdata, 1);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
281 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
282
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
283 if (!texture->driverdata) {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
284 return -1;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
285 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
286 return 0;
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
287 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
288
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
289 static int
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
290 SW_SetTextureColorMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
291 {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
292 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
293 return SDL_SetSurfaceColorMod(surface, texture->r, texture->g,
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
294 texture->b);
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
295 }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
296
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
297 static int
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
298 SW_SetTextureAlphaMod(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
299 {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
300 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
301 return SDL_SetSurfaceAlphaMod(surface, texture->a);
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
302 }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
303
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
304 static int
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
305 SW_SetTextureBlendMode(SDL_Renderer * renderer, SDL_Texture * texture)
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
306 {
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
307 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
308 return SDL_SetSurfaceBlendMode(surface, texture->blendMode);
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
309 }
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
310
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
311 static int
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
312 SW_UpdateTexture(SDL_Renderer * renderer, SDL_Texture * texture,
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
313 const SDL_Rect * rect, const void *pixels, int pitch)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
314 {
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
315 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
316 Uint8 *src, *dst;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
317 int row;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
318 size_t length;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
319
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
320 src = (Uint8 *) pixels;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
321 dst = (Uint8 *) surface->pixels +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
322 rect->y * surface->pitch +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
323 rect->x * surface->format->BytesPerPixel;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
324 length = rect->w * surface->format->BytesPerPixel;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
325 for (row = 0; row < rect->h; ++row) {
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
326 SDL_memcpy(dst, src, length);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
327 src += pitch;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
328 dst += surface->pitch;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
329 }
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
330 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
331 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
332
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
333 static int
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
334 SW_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
335 const SDL_Rect * rect, void **pixels, int *pitch)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
336 {
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
337 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
338
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
339 *pixels =
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
340 (void *) ((Uint8 *) surface->pixels + rect->y * surface->pitch +
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
341 rect->x * surface->format->BytesPerPixel);
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
342 *pitch = surface->pitch;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
343 return 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
344 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
345
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
346 static void
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
347 SW_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
348 {
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
349 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
350
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
351 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
352 SW_RenderDrawPoints(SDL_Renderer * renderer, const SDL_Point * points,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
353 int count)
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
354 {
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
355 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
356 SDL_Texture *texture = SW_ActivateRenderer(renderer);
2904
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
357 SDL_Rect rect;
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
358 int i;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
359 int x, y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
360 int status = 0;
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
361
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
362 if (!texture) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
363 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
364 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
365
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
366 /* Get the smallest rectangle that contains everything */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
367 rect.x = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
368 rect.y = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
369 rect.w = texture->w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
370 rect.h = texture->h;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
371 if (!SDL_EnclosePoints(points, count, &rect, &rect)) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
372 /* Nothing to draw */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
373 return 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
374 }
2904
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
375
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
376 if (data->renderer->LockTexture(data->renderer, texture, &rect,
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
377 &data->surface.pixels,
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
378 &data->surface.pitch) < 0) {
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
379 return -1;
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
380 }
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
381
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
382 data->surface.clip_rect.w = data->surface.w = rect.w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
383 data->surface.clip_rect.h = data->surface.h = rect.h;
2904
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
384
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
385 /* Draw the points! */
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents: 5141
diff changeset
386 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
387 Uint32 color = SDL_MapRGBA(data->surface.format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
388 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
389 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
390
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
391 for (i = 0; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
392 x = points[i].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
393 y = points[i].y - rect.y;
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
394
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
395 status = SDL_DrawPoint(&data->surface, x, y, color);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
396 }
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
397 } else {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
398 for (i = 0; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
399 x = points[i].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
400 y = points[i].y - rect.y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
401
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
402 status = SDL_BlendPoint(&data->surface, x, y,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
403 renderer->blendMode,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
404 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
405 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
406 }
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
407 }
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
408
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
409 data->renderer->UnlockTexture(data->renderer, texture);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
410
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
411 return status;
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
412 }
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
413
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2891
diff changeset
414 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
415 SW_RenderDrawLines(SDL_Renderer * renderer, const SDL_Point * points,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
416 int count)
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
417 {
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
418 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
419 SDL_Texture *texture = SW_ActivateRenderer(renderer);
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
420 SDL_Rect clip, rect;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
421 int i;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
422 int x1, y1, x2, y2;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
423 int status = 0;
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
424
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
425 if (!texture) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
426 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
427 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
428
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
429 /* Get the smallest rectangle that contains everything */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
430 clip.x = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
431 clip.y = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
432 clip.w = texture->w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
433 clip.h = texture->h;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
434 SDL_EnclosePoints(points, count, NULL, &rect);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
435 if (!SDL_IntersectRect(&rect, &clip, &rect)) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
436 /* Nothing to draw */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
437 return 0;
2904
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
438 }
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
439
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
440 if (data->renderer->LockTexture(data->renderer, texture, &rect,
2891
Sam Lantinga <slouken@libsdl.org>
parents: 2889
diff changeset
441 &data->surface.pixels,
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
442 &data->surface.pitch) < 0) {
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
443 return -1;
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
444 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
445
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
446 data->surface.clip_rect.w = data->surface.w = rect.w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
447 data->surface.clip_rect.h = data->surface.h = rect.h;
2904
fa81cc1ef3d0 Fixed clip_rect when drawing points and lines with software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2901
diff changeset
448
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
449 /* Draw the points! */
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents: 5141
diff changeset
450 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
451 Uint32 color = SDL_MapRGBA(data->surface.format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
452 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
453 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
454
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
455 for (i = 1; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
456 x1 = points[i-1].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
457 y1 = points[i-1].y - rect.y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
458 x2 = points[i].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
459 y2 = points[i].y - rect.y;
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
460
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
461 status = SDL_DrawLine(&data->surface, x1, y1, x2, y2, color);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
462 }
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
463 } else {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
464 for (i = 1; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
465 x1 = points[i-1].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
466 y1 = points[i-1].y - rect.y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
467 x2 = points[i].x - rect.x;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
468 y2 = points[i].y - rect.y;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
469
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
470 status = SDL_BlendLine(&data->surface, x1, y1, x2, y2,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
471 renderer->blendMode,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
472 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
473 renderer->a);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
474 }
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
475 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
476
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
477 data->renderer->UnlockTexture(data->renderer, texture);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
478
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
479 return status;
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
480 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
481
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
482 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
483 SW_RenderFillRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
484 int count)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
485 {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
486 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
487 SDL_Texture *texture = SW_ActivateRenderer(renderer);
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
488 SDL_Rect clip, rect;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
489 Uint32 color = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
490 int i;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
491 int status = 0;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
492
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
493 if (!texture) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
494 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
495 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
496
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
497 clip.x = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
498 clip.y = 0;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
499 clip.w = texture->w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
500 clip.h = texture->h;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
501
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents: 5141
diff changeset
502 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
503 color = SDL_MapRGBA(data->surface.format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
504 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
505 renderer->a);
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
506 }
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
507
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
508 for (i = 0; i < count; ++i) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
509 if (!SDL_IntersectRect(rects[i], &clip, &rect)) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
510 /* Nothing to draw */
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
511 continue;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
512 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
513
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
514 if (data->renderer->LockTexture(data->renderer, texture, &rect,
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
515 &data->surface.pixels,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
516 &data->surface.pitch) < 0) {
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
517 return -1;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
518 }
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
519
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
520 data->surface.clip_rect.w = data->surface.w = rect.w;
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
521 data->surface.clip_rect.h = data->surface.h = rect.h;
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
522
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
Sam Lantinga <slouken@libsdl.org>
parents: 5141
diff changeset
523 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
524 status = SDL_FillRect(&data->surface, NULL, color);
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
525 } else {
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
526 status = SDL_BlendFillRect(&data->surface, NULL,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
527 renderer->blendMode,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
528 renderer->r, renderer->g, renderer->b,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
Sam Lantinga <slouken@libsdl.org>
parents: 3536
diff changeset
529 renderer->a);
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
530 }
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
531
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3435
diff changeset
532 data->renderer->UnlockTexture(data->renderer, texture);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
533 }
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
534 return status;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
535 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
536
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
537 static int
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
538 SW_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
539 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
540 {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
541 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
542 SDL_Surface *surface;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
543 SDL_Rect real_srcrect;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
544 SDL_Rect real_dstrect;
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
545 int status;
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
546
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
547 if (!SW_ActivateRenderer(renderer)) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
548 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
549 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
550
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
551 if (data->renderer->LockTexture(data->renderer, data->texture, dstrect,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
552 &data->surface.pixels,
2735
204be4fc2726 Final merge of Google Summer of Code 2008 work...
Sam Lantinga <slouken@libsdl.org>
parents: 2267
diff changeset
553 &data->surface.pitch) < 0) {
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
554 return -1;
1897
c2a27da60b18 Solved the performance problems by introducing the concept of a single-buffered
Sam Lantinga <slouken@libsdl.org>
parents: 1895
diff changeset
555 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
556
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
557 surface = (SDL_Surface *) texture->driverdata;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
558 real_srcrect = *srcrect;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
559
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
560 data->surface.w = dstrect->w;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
561 data->surface.h = dstrect->h;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
562 data->surface.clip_rect.w = dstrect->w;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
563 data->surface.clip_rect.h = dstrect->h;
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
564 real_dstrect = data->surface.clip_rect;
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1972
diff changeset
565
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
566 status = SDL_LowerBlit(surface, &real_srcrect, &data->surface, &real_dstrect);
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
567 data->renderer->UnlockTexture(data->renderer, data->texture);
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
568 return status;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
569 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
570
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
571 static int
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
572 SW_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
3435
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
573 Uint32 format, void * pixels, int pitch)
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
574 {
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
575 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
576
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
577 if (!SW_ActivateRenderer(renderer)) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
578 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
579 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
580
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
581 if (data->renderer->LockTexture(data->renderer, data->texture, rect,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
582 &data->surface.pixels,
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
583 &data->surface.pitch) < 0) {
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
584 return -1;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
585 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
586
3435
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
587 SDL_ConvertPixels(rect->w, rect->h,
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
588 data->format, data->surface.pixels, data->surface.pitch,
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
589 format, pixels, pitch);
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
590
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
591 data->renderer->UnlockTexture(data->renderer, data->texture);
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
592 return 0;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
593 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
594
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
595 static int
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
596 SW_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
3435
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
597 Uint32 format, const void * pixels, int pitch)
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
598 {
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
599 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
600
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
601 if (!SW_ActivateRenderer(renderer)) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
602 return -1;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
603 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
604
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
605 if (data->renderer->LockTexture(data->renderer, data->texture, rect,
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
606 &data->surface.pixels,
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
607 &data->surface.pitch) < 0) {
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
608 return -1;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
609 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
610
3435
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
611 SDL_ConvertPixels(rect->w, rect->h, format, pixels, pitch,
9f62f47d989b You can specify the format for pixel data in SDL_RenderReadPixels() and SDL_RenderWritePixels()
Sam Lantinga <slouken@libsdl.org>
parents: 3427
diff changeset
612 data->format, data->surface.pixels, data->surface.pitch);
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
613
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
614 data->renderer->UnlockTexture(data->renderer, data->texture);
3427
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
615 return 0;
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
616 }
36cf454ba065 Work in progress on implementation of SDL_RenderReadPixels() and SDL_RenderWritePixels(), code untested.
Sam Lantinga <slouken@libsdl.org>
parents: 3053
diff changeset
617
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
618 static void
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
619 SW_RenderPresent(SDL_Renderer * renderer)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
620 {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
621 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
622 SDL_Texture *texture = SW_ActivateRenderer(renderer);
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
623 SDL_Rect rect;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
624
5150
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
625 if (!texture) {
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
626 return;
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
627 }
ad50b3db78bd The rendering functions take a context so it's clear what window they're drawing to. This also potentially opens to the door to multi-threaded rendering in the future.
Sam Lantinga <slouken@libsdl.org>
parents: 5145
diff changeset
628
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
629 /* Send the data to the display */
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
630 rect.x = 0;
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
631 rect.y = 0;
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
632 rect.w = texture->w;
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
633 rect.h = texture->h;
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
634 data->renderer->RenderCopy(data->renderer, texture, &rect, &rect);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
635 data->renderer->RenderPresent(data->renderer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
636 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
637
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
638 static void
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
639 SW_DestroyTexture(SDL_Renderer * renderer, SDL_Texture * texture)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
640 {
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
641 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
642
5159
307ccc9c135e Made it possible to create a texture of any format, even if not supported by the renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 5157
diff changeset
643 SDL_FreeSurface(surface);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
644 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
645
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
646 static void
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
647 SW_DestroyRenderer(SDL_Renderer * renderer)
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
648 {
1918
092bd3a019c5 Starting on the OpenGL renderer...
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
649 SW_RenderData *data = (SW_RenderData *) renderer->driverdata;
3685
64ce267332c6 Switched from SDL_WindowID and SDL_TextureID to SDL_Window* and SDL_Texture* for code simplicity and improved performance.
Sam Lantinga <slouken@libsdl.org>
parents: 3599
diff changeset
650 SDL_Window *window = renderer->window;
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
651
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
652 if (data) {
5145
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
653 if (data->texture) {
c8e049de174c Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
Sam Lantinga <slouken@libsdl.org>
parents: 5144
diff changeset
654 DestroyTexture(data->renderer, data->texture);
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
655 }
1907
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
656 if (data->surface.format) {
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
657 SDL_FreeFormat(data->surface.format);
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
658 }
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
659 if (data->renderer) {
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
660 data->renderer->DestroyRenderer(data->renderer);
06c27a737b7a Streamlined the API a bit and optimized the software renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 1897
diff changeset
661 }
1895
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
662 SDL_free(data);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
663 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
664 SDL_free(renderer);
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
665 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
666
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
Sam Lantinga <slouken@libsdl.org>
parents:
diff changeset
667 /* vi: set ts=4 sw=4 expandtab: */