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comparison src/video/SDL_renderer_gl.c @ 1926:307355678142

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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
comparison
equal deleted inserted replaced
1925:411bfb37082b 1926:307355678142
95 }; 95 };
96 96
97 typedef struct 97 typedef struct
98 { 98 {
99 SDL_GLContext context; 99 SDL_GLContext context;
100 SDL_bool GL_ARB_texture_rectangle_supported;
100 } GL_RenderData; 101 } GL_RenderData;
101 102
102 typedef struct 103 typedef struct
103 { 104 {
104 GLuint texture; 105 GLuint texture;
224 } 225 }
225 226
226 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_width); 227 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_width);
227 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_height); 228 glGetIntegerv(GL_MAX_TEXTURE_SIZE, &renderer->info.max_texture_height);
228 229
229 /* FIXME: Check for GL_ARB_texture_rectangle and GL_EXT_texture_rectangle */ 230 if (SDL_GL_ExtensionSupported("GL_ARB_texture_rectangle")
231 || SDL_GL_ExtensionSupported("GL_EXT_texture_rectangle")) {
232 data->GL_ARB_texture_rectangle_supported = SDL_TRUE;
233 }
230 234
231 /* Set up parameters for rendering */ 235 /* Set up parameters for rendering */
232 glDisable(GL_DEPTH_TEST); 236 glDisable(GL_DEPTH_TEST);
233 glDisable(GL_CULL_FACE); 237 glDisable(GL_CULL_FACE);
234 #ifdef USE_GL_TEXTURE_RECTANGLE 238 if (data->GL_ARB_texture_rectangle_supported) {
235 glEnable(GL_TEXTURE_RECTANGLE_ARB); 239 glEnable(GL_TEXTURE_RECTANGLE_ARB);
236 #else 240 } else {
237 glEnable(GL_TEXTURE_2D); 241 glEnable(GL_TEXTURE_2D);
238 #endif 242 }
239 glMatrixMode(GL_PROJECTION); 243 glMatrixMode(GL_PROJECTION);
240 glLoadIdentity(); 244 glLoadIdentity();
241 glMatrixMode(GL_MODELVIEW); 245 glMatrixMode(GL_MODELVIEW);
242 glLoadIdentity(); 246 glLoadIdentity();
243 glViewport(0, 0, window->w, window->h); 247 glViewport(0, 0, window->w, window->h);
367 371
368 texture->driverdata = data; 372 texture->driverdata = data;
369 373
370 glGetError(); 374 glGetError();
371 glGenTextures(1, &data->texture); 375 glGenTextures(1, &data->texture);
372 #ifdef USE_GL_TEXTURE_RECTANGLE 376 if (renderdata->GL_ARB_texture_rectangle_supported) {
373 data->type = GL_TEXTURE_RECTANGLE_ARB; 377 data->type = GL_TEXTURE_RECTANGLE_ARB;
374 texture_w = texture->w; 378 texture_w = texture->w;
375 texture_h = texture->h; 379 texture_h = texture->h;
376 data->texw = (GLfloat) texture->w; 380 data->texw = (GLfloat) texture->w;
377 data->texh = (GLfloat) texture->h; 381 data->texh = (GLfloat) texture->h;
378 #else 382 } else {
379 data->type = GL_TEXTURE_2D; 383 data->type = GL_TEXTURE_2D;
380 texture_w = power_of_2(texture->w); 384 texture_w = power_of_2(texture->w);
381 texture_h = power_of_2(texture->h); 385 texture_h = power_of_2(texture->h);
382 data->texw = (GLfloat) texture->w / texture_w; 386 data->texw = (GLfloat) texture->w / texture_w;
383 data->texh = (GLfloat) texture->h / texture_h; 387 data->texh = (GLfloat) texture->h / texture_h;
384 #endif 388 }
385 data->format = format; 389 data->format = format;
386 data->formattype = type; 390 data->formattype = type;
387 glBindTexture(data->type, data->texture); 391 glBindTexture(data->type, data->texture);
388 glTexImage2D(data->type, 0, internalFormat, texture_w, texture_h, 0, 392 glTexImage2D(data->type, 0, internalFormat, texture_w, texture_h, 0,
389 format, type, NULL); 393 format, type, NULL);