Mercurial > sdl-ios-xcode
diff src/video/SDL_renderer_gl.c @ 1926:307355678142
Added SDL_GL_ExtensionSupported()
Use GL_ARB_texture_rectangle in the OpenGL renderer, if supported.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 22 Jul 2006 21:58:17 +0000 |
| parents | 69217fdd2c0a |
| children | aeb8263d377a |
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--- a/src/video/SDL_renderer_gl.c Sat Jul 22 21:17:37 2006 +0000 +++ b/src/video/SDL_renderer_gl.c Sat Jul 22 21:58:17 2006 +0000 @@ -97,6 +97,7 @@ typedef struct { SDL_GLContext context; + SDL_bool GL_ARB_texture_rectangle_supported; } GL_RenderData; typedef struct @@ -226,16 +227,19 @@ glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_width); glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_height); - /* FIXME: Check for GL_ARB_texture_rectangle and GL_EXT_texture_rectangle */ + if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle") + || SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) { + data->GL_ARB_texture_rectangle_supported = SDL_TRUE; + } /* Set up parameters for rendering */ glDisable(GL_DEPTH_TEST); glDisable(GL_CULL_FACE); -#ifdef USE_GL_TEXTURE_RECTANGLE - glEnable(GL_TEXTURE_RECTANGLE_ARB); -#else - glEnable(GL_TEXTURE_2D); -#endif + if (data->GL_ARB_texture_rectangle_supported) { + glEnable(GL_TEXTURE_RECTANGLE_ARB); + } else { + glEnable(GL_TEXTURE_2D); + } glMatrixMode(GL_PROJECTION); glLoadIdentity(); glMatrixMode(GL_MODELVIEW); @@ -369,19 +373,19 @@ glGetError(); glGenTextures(1, &data->texture); -#ifdef USE_GL_TEXTURE_RECTANGLE - data->type = GL_TEXTURE_RECTANGLE_ARB; - texture_w = texture->w; - texture_h = texture->h; - data->texw = (GLfloat) texture->w; - data->texh = (GLfloat) texture->h; -#else - data->type = GL_TEXTURE_2D; - texture_w = power_of_2(texture->w); - texture_h = power_of_2(texture->h); - data->texw = (GLfloat) texture->w / texture_w; - data->texh = (GLfloat) texture->h / texture_h; -#endif + if (renderdata->GL_ARB_texture_rectangle_supported) { + data->type = GL_TEXTURE_RECTANGLE_ARB; + texture_w = texture->w; + texture_h = texture->h; + data->texw = (GLfloat) texture->w; + data->texh = (GLfloat) texture->h; + } else { + data->type = GL_TEXTURE_2D; + texture_w = power_of_2(texture->w); + texture_h = power_of_2(texture->h); + data->texw = (GLfloat) texture->w / texture_w; + data->texh = (GLfloat) texture->h / texture_h; + } data->format = format; data->formattype = type; glBindTexture(data->type, data->texture);