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annotate src/render/SDL_sysrender.h @ 5217:b0797947dd1c

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You don't need to copy the pixels into the streaming texture's pixel data. This behavior is defined specifically to optimize the UpdateTexture path.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 06 Feb 2011 20:56:21 -0800
parents 115fff0641ee
children 2178ffe17222
rev   line source
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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.
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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 #ifndef _SDL_sysrender_h
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25 #define _SDL_sysrender_h
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26
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27 #include "SDL_render.h"
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28 #include "SDL_events.h"
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29 #include "SDL_yuv_sw_c.h"
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30
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31 /* The SDL 2D rendering system */
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32
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33 typedef struct SDL_RenderDriver SDL_RenderDriver;
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34
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35 /* Define the SDL texture structure */
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36 struct SDL_Texture
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37 {
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38 const void *magic;
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39 Uint32 format; /**< The pixel format of the texture */
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40 int access; /**< SDL_TextureAccess */
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41 int w; /**< The width of the texture */
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42 int h; /**< The height of the texture */
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43 int modMode; /**< The texture modulation mode */
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44 SDL_BlendMode blendMode; /**< The texture blend mode */
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45 Uint8 r, g, b, a; /**< Texture modulation values */
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46
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47 SDL_Renderer *renderer;
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48
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49 /* Support for formats not supported directly by the renderer */
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50 SDL_Texture *native;
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51 SDL_SW_YUVTexture *yuv;
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52 void *pixels;
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53 int pitch;
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54 SDL_Rect locked_rect;
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55
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56 void *driverdata; /**< Driver specific texture representation */
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57
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58 SDL_Texture *prev;
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59 SDL_Texture *next;
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60 };
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61
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62 /* Define the SDL renderer structure */
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63 struct SDL_Renderer
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64 {
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65 const void *magic;
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66
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67 void (*WindowEvent) (SDL_Renderer * renderer, const SDL_WindowEvent *event);
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68 int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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69 int (*SetTextureColorMod) (SDL_Renderer * renderer,
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70 SDL_Texture * texture);
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71 int (*SetTextureAlphaMod) (SDL_Renderer * renderer,
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72 SDL_Texture * texture);
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73 int (*SetTextureBlendMode) (SDL_Renderer * renderer,
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74 SDL_Texture * texture);
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75 int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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76 const SDL_Rect * rect, const void *pixels,
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77 int pitch);
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78 int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
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79 const SDL_Rect * rect, void **pixels, int *pitch);
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80 void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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81 int (*RenderClear) (SDL_Renderer * renderer);
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82 int (*RenderDrawPoints) (SDL_Renderer * renderer, const SDL_Point * points,
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83 int count);
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84 int (*RenderDrawLines) (SDL_Renderer * renderer, const SDL_Point * points,
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85 int count);
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86 int (*RenderFillRects) (SDL_Renderer * renderer, const SDL_Rect ** rects,
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87 int count);
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88 int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
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89 const SDL_Rect * srcrect, const SDL_Rect * dstrect);
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90 int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
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91 Uint32 format, void * pixels, int pitch);
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92 void (*RenderPresent) (SDL_Renderer * renderer);
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93 void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
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94
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95 void (*DestroyRenderer) (SDL_Renderer * renderer);
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96
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97 /* The current renderer info */
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98 SDL_RendererInfo info;
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99
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100 /* The window associated with the renderer */
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101 SDL_Window *window;
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102
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103 /* The list of textures */
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104 SDL_Texture *textures;
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105
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106 Uint8 r, g, b, a; /**< Color for drawing operations values */
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107 SDL_BlendMode blendMode; /**< The drawing blend mode */
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108
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109 void *driverdata;
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110 };
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111
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112 /* Define the SDL render driver structure */
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113 struct SDL_RenderDriver
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114 {
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115 SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
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116
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117 /* Info about the renderer capabilities */
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118 SDL_RendererInfo info;
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119 };
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120
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121 #if SDL_VIDEO_RENDER_D3D
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122 extern SDL_RenderDriver D3D_RenderDriver;
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123 #endif
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124 #if SDL_VIDEO_RENDER_OGL
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125 extern SDL_RenderDriver GL_RenderDriver;
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126 #endif
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127 #if SDL_VIDEO_RENDER_OGL_ES2
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128 extern SDL_RenderDriver GLES2_RenderDriver;
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129 #endif
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130 #if SDL_VIDEO_RENDER_OGL_ES
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131 extern SDL_RenderDriver GLES_RenderDriver;
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132 #endif
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133 #if SDL_VIDEO_RENDER_DIRECTFB
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134 extern SDL_RenderDriver DirectFB_RenderDriver;
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135 #endif
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136 extern SDL_RenderDriver SW_RenderDriver;
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137
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138 #endif /* _SDL_sysrender_h */
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139
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140 /* vi: set ts=4 sw=4 expandtab: */