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annotate src/video/dummy/SDL_nullrender.c @ 5145:c8e049de174c

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Making the API simpler, the renderer present semantics are always having a backbuffer and then discarding it. This is best for hardware accelerated rendering.
author Sam Lantinga <slouken@libsdl.org>
date Tue, 01 Feb 2011 12:19:46 -0800
parents e743b9c3f6d6
children 5429daf5e3f9
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_video.h"
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25 #include "../SDL_sysvideo.h"
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26 #include "../SDL_yuv_sw_c.h"
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27 #include "../SDL_renderer_sw.h"
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28
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29
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30 /* SDL surface based renderer implementation */
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31
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32 static SDL_Renderer *SDL_DUMMY_CreateRenderer(SDL_Window * window,
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33 Uint32 flags);
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34 static int SDL_DUMMY_RenderDrawPoints(SDL_Renderer * renderer,
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35 const SDL_Point * points, int count);
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36 static int SDL_DUMMY_RenderDrawLines(SDL_Renderer * renderer,
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37 const SDL_Point * points, int count);
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38 static int SDL_DUMMY_RenderDrawRects(SDL_Renderer * renderer,
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39 const SDL_Rect ** rects, int count);
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40 static int SDL_DUMMY_RenderFillRects(SDL_Renderer * renderer,
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41 const SDL_Rect ** rects, int count);
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42 static int SDL_DUMMY_RenderCopy(SDL_Renderer * renderer,
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43 SDL_Texture * texture,
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44 const SDL_Rect * srcrect,
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45 const SDL_Rect * dstrect);
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46 static int SDL_DUMMY_RenderReadPixels(SDL_Renderer * renderer,
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47 const SDL_Rect * rect,
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48 Uint32 format,
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49 void * pixels, int pitch);
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50 static int SDL_DUMMY_RenderWritePixels(SDL_Renderer * renderer,
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51 const SDL_Rect * rect,
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52 Uint32 format,
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53 const void * pixels, int pitch);
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54 static void SDL_DUMMY_RenderPresent(SDL_Renderer * renderer);
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55 static void SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer);
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56
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57
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58 SDL_RenderDriver SDL_DUMMY_RenderDriver = {
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59 SDL_DUMMY_CreateRenderer,
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60 {
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61 "dummy",
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62 (0),
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63 }
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64 };
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65
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66 typedef struct
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67 {
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68 SDL_Surface *screen;
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69 } SDL_DUMMY_RenderData;
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70
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71 SDL_Renderer *
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72 SDL_DUMMY_CreateRenderer(SDL_Window * window, Uint32 flags)
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73 {
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74 SDL_VideoDisplay *display = window->display;
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75 SDL_DisplayMode *displayMode = &display->current_mode;
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76 SDL_Renderer *renderer;
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77 SDL_DUMMY_RenderData *data;
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78 int bpp;
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79 Uint32 Rmask, Gmask, Bmask, Amask;
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80
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81 if (!SDL_PixelFormatEnumToMasks
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82 (displayMode->format, &bpp, &Rmask, &Gmask, &Bmask, &Amask)) {
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83 SDL_SetError("Unknown display format");
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84 return NULL;
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85 }
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86
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87 renderer = (SDL_Renderer *) SDL_calloc(1, sizeof(*renderer));
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88 if (!renderer) {
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89 SDL_OutOfMemory();
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90 return NULL;
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91 }
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92
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93 data = (SDL_DUMMY_RenderData *) SDL_malloc(sizeof(*data));
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94 if (!data) {
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95 SDL_DUMMY_DestroyRenderer(renderer);
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96 SDL_OutOfMemory();
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97 return NULL;
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98 }
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99 SDL_zerop(data);
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100
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101 renderer->RenderDrawPoints = SDL_DUMMY_RenderDrawPoints;
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102 renderer->RenderDrawLines = SDL_DUMMY_RenderDrawLines;
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103 renderer->RenderDrawRects = SDL_DUMMY_RenderDrawRects;
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104 renderer->RenderFillRects = SDL_DUMMY_RenderFillRects;
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105 renderer->RenderCopy = SDL_DUMMY_RenderCopy;
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106 renderer->RenderReadPixels = SDL_DUMMY_RenderReadPixels;
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107 renderer->RenderWritePixels = SDL_DUMMY_RenderWritePixels;
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108 renderer->RenderPresent = SDL_DUMMY_RenderPresent;
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109 renderer->DestroyRenderer = SDL_DUMMY_DestroyRenderer;
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110 renderer->info.name = SDL_DUMMY_RenderDriver.info.name;
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111 renderer->info.flags = 0;
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112 renderer->window = window;
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113 renderer->driverdata = data;
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114 Setup_SoftwareRenderer(renderer);
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115
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116 data->screen =
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117 SDL_CreateRGBSurface(0, window->w, window->h, bpp, Rmask, Gmask,
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118 Bmask, Amask);
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119 if (!data->screen) {
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120 SDL_DUMMY_DestroyRenderer(renderer);
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parents: 5143
diff changeset
121 return NULL;
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
122 }
5145
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parents: 5143
diff changeset
123 SDL_SetSurfacePalette(data->screen, display->palette);
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parents:
diff changeset
124
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
125 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
126 }
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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parents:
diff changeset
127
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diff changeset
128 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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diff changeset
129 SDL_DUMMY_RenderDrawPoints(SDL_Renderer * renderer,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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diff changeset
130 const SDL_Point * points, int count)
2901
133601e3b255 Added RenderPiont() API
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parents: 2888
diff changeset
131 {
133601e3b255 Added RenderPiont() API
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parents: 2888
diff changeset
132 SDL_DUMMY_RenderData *data =
133601e3b255 Added RenderPiont() API
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parents: 2888
diff changeset
133 (SDL_DUMMY_RenderData *) renderer->driverdata;
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parents: 5143
diff changeset
134 SDL_Surface *target = data->screen;
2901
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parents: 2888
diff changeset
135
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parents: 3697
diff changeset
136 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
137 Uint32 color = SDL_MapRGBA(target->format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
138 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
139 renderer->a);
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
140
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
141 return SDL_DrawPoints(target, points, count, color);
2901
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
142 } else {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
143 return SDL_BlendPoints(target, points, count, renderer->blendMode,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
144 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
145 renderer->a);
2901
133601e3b255 Added RenderPiont() API
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parents: 2888
diff changeset
146 }
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
147 }
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
148
133601e3b255 Added RenderPiont() API
Sam Lantinga <slouken@libsdl.org>
parents: 2888
diff changeset
149 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
150 SDL_DUMMY_RenderDrawLines(SDL_Renderer * renderer,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
151 const SDL_Point * points, int count)
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
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diff changeset
152 {
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
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parents: 2884
diff changeset
153 SDL_DUMMY_RenderData *data =
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
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parents: 2884
diff changeset
154 (SDL_DUMMY_RenderData *) renderer->driverdata;
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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: 5143
diff changeset
155 SDL_Surface *target = data->screen;
2888
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parents: 2884
diff changeset
156
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parents: 3697
diff changeset
157 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
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parents: 3451
diff changeset
158 Uint32 color = SDL_MapRGBA(target->format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
159 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
160 renderer->a);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
161
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
162 return SDL_DrawLines(target, points, count, color);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
163 } else {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
164 return SDL_BlendLines(target, points, count, renderer->blendMode,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
165 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
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parents: 3451
diff changeset
166 renderer->a);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
167 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
168 }
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
169
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
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parents: 2884
diff changeset
170 static int
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
171 SDL_DUMMY_RenderDrawRects(SDL_Renderer * renderer, const SDL_Rect ** rects,
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
172 int count)
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
173 {
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
174 SDL_DUMMY_RenderData *data =
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
175 (SDL_DUMMY_RenderData *) renderer->driverdata;
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: 5143
diff changeset
176 SDL_Surface *target = data->screen;
3596
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
177
5143
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parents: 3697
diff changeset
178 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
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
179 Uint32 color = SDL_MapRGBA(target->format,
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
180 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
181 renderer->a);
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
182
f638ded38b8a Added SDL_RenderClear() as a fast method of clearing the screen to the drawing color.
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parents: 3536
diff changeset
183 return SDL_DrawRects(target, rects, count, color);
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
184 } else {
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
185 return SDL_BlendRects(target, rects, count,
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
186 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
187 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
188 renderer->a);
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
189 }
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
190 }
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
191
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
192 static int
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
193 SDL_DUMMY_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
194 int count)
1908
e079dafea2bf Implemented fully featured dummy renderer
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parents: 1907
diff changeset
195 {
1912
8d384b647307 Setting up the OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents: 1908
diff changeset
196 SDL_DUMMY_RenderData *data =
8d384b647307 Setting up the OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents: 1908
diff changeset
197 (SDL_DUMMY_RenderData *) renderer->driverdata;
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: 5143
diff changeset
198 SDL_Surface *target = data->screen;
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
199
5143
e743b9c3f6d6 Making the API simpler, the blend modes are "none, blend, add" and are supported by all renderers.
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parents: 3697
diff changeset
200 if (renderer->blendMode == SDL_BLENDMODE_NONE) {
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
201 Uint32 color = SDL_MapRGBA(target->format,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
202 renderer->r, renderer->g, renderer->b,
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
203 renderer->a);
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
204
3536
0267b8b1595c Added interfaces for batch drawing of points, lines and rects:
Sam Lantinga <slouken@libsdl.org>
parents: 3451
diff changeset
205 return SDL_FillRects(target, rects, count, color);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
206 } 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
207 return SDL_BlendFillRects(target, rects, count,
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
208 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
209 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
210 renderer->a);
2888
32e8bbba1e94 Added stubs for software implementations of blending fills and line drawing
Sam Lantinga <slouken@libsdl.org>
parents: 2884
diff changeset
211 }
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
212 }
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
213
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
214 static int
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
215 SDL_DUMMY_RenderCopy(SDL_Renderer * renderer, SDL_Texture * texture,
1985
8055185ae4ed Added source color and alpha modulation support.
Sam Lantinga <slouken@libsdl.org>
parents: 1965
diff changeset
216 const SDL_Rect * srcrect, const SDL_Rect * dstrect)
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
217 {
1912
8d384b647307 Setting up the OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents: 1908
diff changeset
218 SDL_DUMMY_RenderData *data =
8d384b647307 Setting up the OpenGL support
Sam Lantinga <slouken@libsdl.org>
parents: 1908
diff changeset
219 (SDL_DUMMY_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: 3596
diff changeset
220 SDL_Window *window = renderer->window;
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: 3596
diff changeset
221 SDL_VideoDisplay *display = window->display;
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
222
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
223 if (SDL_ISPIXELFORMAT_FOURCC(texture->format)) {
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: 5143
diff changeset
224 SDL_Surface *target = data->screen;
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
225 void *pixels =
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
226 (Uint8 *) target->pixels + dstrect->y * target->pitch +
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
227 dstrect->x * target->format->BytesPerPixel;
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
228 return SDL_SW_CopyYUVToRGB((SDL_SW_YUVTexture *) texture->driverdata,
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
229 srcrect, display->current_mode.format,
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
230 dstrect->w, dstrect->h, pixels,
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
231 target->pitch);
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
232 } else {
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
233 SDL_Surface *surface = (SDL_Surface *) texture->driverdata;
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: 5143
diff changeset
234 SDL_Surface *target = data->screen;
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
235 SDL_Rect real_srcrect = *srcrect;
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
236 SDL_Rect real_dstrect = *dstrect;
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
237
2267
c785543d1843 Okay, still some bugs, but everything builds again...
Sam Lantinga <slouken@libsdl.org>
parents: 2262
diff changeset
238 return SDL_LowerBlit(surface, &real_srcrect, target, &real_dstrect);
1908
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
239 }
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
240 }
e079dafea2bf Implemented fully featured dummy renderer
Sam Lantinga <slouken@libsdl.org>
parents: 1907
diff changeset
241
3451
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
242 static int
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
243 SDL_DUMMY_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
244 Uint32 format, void * pixels, int pitch)
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
245 {
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
246 SDL_DUMMY_RenderData *data =
a65f7b3a2524 Implemented SDL_RenderReadPixels()/SDL_RenderWritePixels() for the dummy renderer.
Sam Lantinga <slouken@libsdl.org>
parents: 2927
diff changeset
247 (SDL_DUMMY_RenderData *) renderer->driverdata;
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248 SDL_Window *window = renderer->window;
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249 SDL_VideoDisplay *display = window->display;
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250 SDL_Surface *screen = data->screen;
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251 Uint32 screen_format = display->current_mode.format;
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252 Uint8 *screen_pixels = (Uint8 *) screen->pixels +
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253 rect->y * screen->pitch +
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254 rect->x * screen->format->BytesPerPixel;
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255 int screen_pitch = screen->pitch;
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256
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257 return SDL_ConvertPixels(rect->w, rect->h,
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258 screen_format, screen_pixels, screen_pitch,
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259 format, pixels, pitch);
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260 }
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261
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262 static int
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263 SDL_DUMMY_RenderWritePixels(SDL_Renderer * renderer, const SDL_Rect * rect,
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264 Uint32 format, const void * pixels, int pitch)
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265 {
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266 SDL_DUMMY_RenderData *data =
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267 (SDL_DUMMY_RenderData *) renderer->driverdata;
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268 SDL_Window *window = renderer->window;
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269 SDL_VideoDisplay *display = window->display;
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270 SDL_Surface *screen = data->screen;
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271 Uint32 screen_format = display->current_mode.format;
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272 Uint8 *screen_pixels = (Uint8 *) screen->pixels +
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273 rect->y * screen->pitch +
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274 rect->x * screen->format->BytesPerPixel;
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275 int screen_pitch = screen->pitch;
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276
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277 return SDL_ConvertPixels(rect->w, rect->h,
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278 format, pixels, pitch,
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279 screen_format, screen_pixels, screen_pitch);
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280 }
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281
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282 static void
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283 SDL_DUMMY_RenderPresent(SDL_Renderer * renderer)
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284 {
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285 static int frame_number;
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286 SDL_DUMMY_RenderData *data =
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287 (SDL_DUMMY_RenderData *) renderer->driverdata;
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288
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289 /* Send the data to the display */
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290 if (SDL_getenv("SDL_VIDEO_DUMMY_SAVE_FRAMES")) {
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291 char file[128];
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292 SDL_snprintf(file, sizeof(file), "SDL_window%d-%8.8d.bmp",
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293 renderer->window->id, ++frame_number);
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294 SDL_SaveBMP(data->screen, file);
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295 }
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296 }
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297
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298 static void
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299 SDL_DUMMY_DestroyRenderer(SDL_Renderer * renderer)
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300 {
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301 SDL_DUMMY_RenderData *data =
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302 (SDL_DUMMY_RenderData *) renderer->driverdata;
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303 int i;
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304
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305 if (data) {
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306 if (data->screen) {
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.
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307 SDL_FreeSurface(data->screen);
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308 }
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309 SDL_free(data);
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310 }
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311 SDL_free(renderer);
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312 }
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313
c121d94672cb SDL 1.2 is moving to a branch, and SDL 1.3 is becoming the head.
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314 /* vi: set ts=4 sw=4 expandtab: */