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comparison src/video/SDL_renderer_gl.c @ 1970:db3ba6c0d0df

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Allow the render context to do necessary work when the video mode changes.
author Sam Lantinga <slouken@libsdl.org>
date Sun, 06 Aug 2006 04:39:13 +0000
parents a788656ca29a
children 70deaf574153
comparison
equal deleted inserted replaced
1969:5d3724f64f2b 1970:db3ba6c0d0df
32 32
33 /* OpenGL renderer implementation */ 33 /* OpenGL renderer implementation */
34 34
35 static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags); 35 static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
36 static int GL_ActivateRenderer(SDL_Renderer * renderer); 36 static int GL_ActivateRenderer(SDL_Renderer * renderer);
37 static int GL_DisplayModeChanged(SDL_Renderer * renderer);
37 static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture); 38 static int GL_CreateTexture(SDL_Renderer * renderer, SDL_Texture * texture);
38 static int GL_SetTexturePalette(SDL_Renderer * renderer, 39 static int GL_SetTexturePalette(SDL_Renderer * renderer,
39 SDL_Texture * texture, 40 SDL_Texture * texture,
40 const SDL_Color * colors, int firstcolor, 41 const SDL_Color * colors, int firstcolor,
41 int ncolors); 42 int ncolors);
95 }; 96 };
96 97
97 typedef struct 98 typedef struct
98 { 99 {
99 SDL_GLContext context; 100 SDL_GLContext context;
101 SDL_bool updateSize;
100 SDL_bool GL_ARB_texture_rectangle_supported; 102 SDL_bool GL_ARB_texture_rectangle_supported;
101 int blendMode; 103 int blendMode;
102 int scaleMode; 104 int scaleMode;
103 105
104 /* OpenGL functions */ 106 /* OpenGL functions */
217 SDL_OutOfMemory(); 219 SDL_OutOfMemory();
218 return NULL; 220 return NULL;
219 } 221 }
220 222
221 renderer->ActivateRenderer = GL_ActivateRenderer; 223 renderer->ActivateRenderer = GL_ActivateRenderer;
224 renderer->DisplayModeChanged = GL_DisplayModeChanged;
222 renderer->CreateTexture = GL_CreateTexture; 225 renderer->CreateTexture = GL_CreateTexture;
223 renderer->SetTexturePalette = GL_SetTexturePalette; 226 renderer->SetTexturePalette = GL_SetTexturePalette;
224 renderer->GetTexturePalette = GL_GetTexturePalette; 227 renderer->GetTexturePalette = GL_GetTexturePalette;
225 renderer->UpdateTexture = GL_UpdateTexture; 228 renderer->UpdateTexture = GL_UpdateTexture;
226 renderer->LockTexture = GL_LockTexture; 229 renderer->LockTexture = GL_LockTexture;
280 if (data->GL_ARB_texture_rectangle_supported) { 283 if (data->GL_ARB_texture_rectangle_supported) {
281 data->glEnable(GL_TEXTURE_RECTANGLE_ARB); 284 data->glEnable(GL_TEXTURE_RECTANGLE_ARB);
282 } else { 285 } else {
283 data->glEnable(GL_TEXTURE_2D); 286 data->glEnable(GL_TEXTURE_2D);
284 } 287 }
285 data->glMatrixMode(GL_PROJECTION); 288 data->updateSize = SDL_TRUE;
286 data->glLoadIdentity();
287 data->glMatrixMode(GL_MODELVIEW);
288 data->glLoadIdentity();
289 data->glViewport(0, 0, window->w, window->h);
290 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0, 0.0,
291 1.0);
292 289
293 return renderer; 290 return renderer;
294 } 291 }
295 292
296 static int 293 static int
297 GL_ActivateRenderer(SDL_Renderer * renderer) 294 GL_ActivateRenderer(SDL_Renderer * renderer)
298 { 295 {
299 GL_RenderData *data = (GL_RenderData *) renderer->driverdata; 296 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
300 SDL_Window *window = SDL_GetWindowFromID(renderer->window); 297 SDL_Window *window = SDL_GetWindowFromID(renderer->window);
301 298
302 return SDL_GL_MakeCurrent(window->id, data->context); 299 if (SDL_GL_MakeCurrent(window->id, data->context) < 0) {
300 return -1;
301 }
302 if (data->updateSize) {
303 data->glMatrixMode(GL_PROJECTION);
304 data->glLoadIdentity();
305 data->glMatrixMode(GL_MODELVIEW);
306 data->glLoadIdentity();
307 data->glViewport(0, 0, window->w, window->h);
308 data->glOrtho(0.0, (GLdouble) window->w, (GLdouble) window->h, 0.0,
309 0.0, 1.0);
310 data->updateSize = SDL_FALSE;
311 }
312 return 0;
313 }
314
315 static int
316 GL_DisplayModeChanged(SDL_Renderer * renderer)
317 {
318 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
319
320 data->updateSize = SDL_TRUE;
321 return 0;
303 } 322 }
304 323
305 static __inline__ int 324 static __inline__ int
306 power_of_2(int input) 325 power_of_2(int input)
307 { 326 {