src/render/SDL_sysrender.h
author Sam Lantinga <slouken@libsdl.org>
Sat, 21 Jan 2012 22:22:30 -0500
changeset 6246 c70ec935a4bb
parent 6232 37e8d0736366
child 6247 b6212690f78d
permissions -rwxr-xr-x
Reorganized the render target code, moving the viewport handling to the general code and adding software implementation.
     1 /*
     2   Simple DirectMedia Layer
     3   Copyright (C) 1997-2012 Sam Lantinga <slouken@libsdl.org>
     4 
     5   This software is provided 'as-is', without any express or implied
     6   warranty.  In no event will the authors be held liable for any damages
     7   arising from the use of this software.
     8 
     9   Permission is granted to anyone to use this software for any purpose,
    10   including commercial applications, and to alter it and redistribute it
    11   freely, subject to the following restrictions:
    12 
    13   1. The origin of this software must not be misrepresented; you must not
    14      claim that you wrote the original software. If you use this software
    15      in a product, an acknowledgment in the product documentation would be
    16      appreciated but is not required.
    17   2. Altered source versions must be plainly marked as such, and must not be
    18      misrepresented as being the original software.
    19   3. This notice may not be removed or altered from any source distribution.
    20 */
    21 #include "SDL_config.h"
    22 
    23 #ifndef _SDL_sysrender_h
    24 #define _SDL_sysrender_h
    25 
    26 #include "SDL_render.h"
    27 #include "SDL_events.h"
    28 #include "SDL_yuv_sw_c.h"
    29 
    30 /* The SDL 2D rendering system */
    31 
    32 typedef struct SDL_RenderDriver SDL_RenderDriver;
    33 
    34 /* Define the SDL texture structure */
    35 struct SDL_Texture
    36 {
    37     const void *magic;
    38     Uint32 format;              /**< The pixel format of the texture */
    39     int access;                 /**< SDL_TextureAccess */
    40     int w;                      /**< The width of the texture */
    41     int h;                      /**< The height of the texture */
    42     int modMode;                /**< The texture modulation mode */
    43     SDL_BlendMode blendMode;    /**< The texture blend mode */
    44     Uint8 r, g, b, a;           /**< Texture modulation values */
    45 
    46     SDL_Renderer *renderer;
    47 
    48     /* Support for formats not supported directly by the renderer */
    49     SDL_Texture *native;
    50     SDL_SW_YUVTexture *yuv;
    51     void *pixels;
    52     int pitch;
    53     SDL_Rect locked_rect;
    54 
    55     void *driverdata;           /**< Driver specific texture representation */
    56 
    57     SDL_Texture *prev;
    58     SDL_Texture *next;
    59 };
    60 
    61 /* Define the SDL renderer structure */
    62 struct SDL_Renderer
    63 {
    64     const void *magic;
    65 
    66     void (*WindowEvent) (SDL_Renderer * renderer, const SDL_WindowEvent *event);
    67     int (*CreateTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
    68     int (*SetTextureColorMod) (SDL_Renderer * renderer,
    69                                SDL_Texture * texture);
    70     int (*SetTextureAlphaMod) (SDL_Renderer * renderer,
    71                                SDL_Texture * texture);
    72     int (*SetTextureBlendMode) (SDL_Renderer * renderer,
    73                                 SDL_Texture * texture);
    74     int (*UpdateTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
    75                           const SDL_Rect * rect, const void *pixels,
    76                           int pitch);
    77     int (*LockTexture) (SDL_Renderer * renderer, SDL_Texture * texture,
    78                         const SDL_Rect * rect, void **pixels, int *pitch);
    79     void (*UnlockTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
    80     int (*SetTargetTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
    81     int (*UpdateViewport) (SDL_Renderer * renderer);
    82     int (*RenderClear) (SDL_Renderer * renderer);
    83     int (*RenderDrawPoints) (SDL_Renderer * renderer, const SDL_Point * points,
    84                              int count);
    85     int (*RenderDrawLines) (SDL_Renderer * renderer, const SDL_Point * points,
    86                             int count);
    87     int (*RenderFillRects) (SDL_Renderer * renderer, const SDL_Rect * rects,
    88                             int count);
    89     int (*RenderCopy) (SDL_Renderer * renderer, SDL_Texture * texture,
    90                        const SDL_Rect * srcrect, const SDL_Rect * dstrect);
    91     int (*RenderReadPixels) (SDL_Renderer * renderer, const SDL_Rect * rect,
    92                              Uint32 format, void * pixels, int pitch);
    93     void (*RenderPresent) (SDL_Renderer * renderer);
    94     void (*DestroyTexture) (SDL_Renderer * renderer, SDL_Texture * texture);
    95 
    96     void (*DestroyRenderer) (SDL_Renderer * renderer);
    97 
    98     /* The current renderer info */
    99     SDL_RendererInfo info;
   100 
   101     /* The window associated with the renderer */
   102     SDL_Window *window;
   103     SDL_bool minimized;
   104 
   105     /* The drawable area within the window */
   106     SDL_Rect viewport;
   107     SDL_Rect viewport_backup;
   108 
   109     /* The list of textures */
   110     SDL_Texture *textures;
   111     SDL_Texture *target;
   112 
   113     Uint8 r, g, b, a;                   /**< Color for drawing operations values */
   114     SDL_BlendMode blendMode;            /**< The drawing blend mode */
   115 
   116     void *driverdata;
   117 };
   118 
   119 /* Define the SDL render driver structure */
   120 struct SDL_RenderDriver
   121 {
   122     SDL_Renderer *(*CreateRenderer) (SDL_Window * window, Uint32 flags);
   123 
   124     /* Info about the renderer capabilities */
   125     SDL_RendererInfo info;
   126 };
   127 
   128 #if !SDL_RENDER_DISABLED
   129 
   130 #if SDL_VIDEO_RENDER_D3D
   131 extern SDL_RenderDriver D3D_RenderDriver;
   132 #endif
   133 #if SDL_VIDEO_RENDER_OGL
   134 extern SDL_RenderDriver GL_RenderDriver;
   135 #endif
   136 #if SDL_VIDEO_RENDER_OGL_ES2
   137 extern SDL_RenderDriver GLES2_RenderDriver;
   138 #endif
   139 #if SDL_VIDEO_RENDER_OGL_ES
   140 extern SDL_RenderDriver GLES_RenderDriver;
   141 #endif
   142 #if SDL_VIDEO_RENDER_DIRECTFB
   143 extern SDL_RenderDriver DirectFB_RenderDriver;
   144 #endif
   145 #if SDL_VIDEO_RENDER_NDS
   146 extern SDL_RenderDriver NDS_RenderDriver;
   147 #endif
   148 extern SDL_RenderDriver SW_RenderDriver;
   149 
   150 #endif /* !SDL_RENDER_DISABLED */
   151 
   152 #endif /* _SDL_sysrender_h */
   153 
   154 /* vi: set ts=4 sw=4 expandtab: */