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comparison src/render/opengl/SDL_render_gl.c @ 5229:2178ffe17222

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Added function SDL_RenderSetClipRect()
author Sam Lantinga <slouken@libsdl.org>
date Mon, 07 Feb 2011 20:06:26 -0800
parents daa5463466c5
children 710d00cb3a6a
comparison
equal deleted inserted replaced
5228:ab0d7cecc0f6 5229:2178ffe17222
50 const SDL_Rect * rect, const void *pixels, 50 const SDL_Rect * rect, const void *pixels,
51 int pitch); 51 int pitch);
52 static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture, 52 static int GL_LockTexture(SDL_Renderer * renderer, SDL_Texture * texture,
53 const SDL_Rect * rect, void **pixels, int *pitch); 53 const SDL_Rect * rect, void **pixels, int *pitch);
54 static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture); 54 static void GL_UnlockTexture(SDL_Renderer * renderer, SDL_Texture * texture);
55 static void GL_SetClipRect(SDL_Renderer * renderer, const SDL_Rect * rect);
55 static int GL_RenderClear(SDL_Renderer * renderer); 56 static int GL_RenderClear(SDL_Renderer * renderer);
56 static int GL_RenderDrawPoints(SDL_Renderer * renderer, 57 static int GL_RenderDrawPoints(SDL_Renderer * renderer,
57 const SDL_Point * points, int count); 58 const SDL_Point * points, int count);
58 static int GL_RenderDrawLines(SDL_Renderer * renderer, 59 static int GL_RenderDrawLines(SDL_Renderer * renderer,
59 const SDL_Point * points, int count); 60 const SDL_Point * points, int count);
197 renderer->WindowEvent = GL_WindowEvent; 198 renderer->WindowEvent = GL_WindowEvent;
198 renderer->CreateTexture = GL_CreateTexture; 199 renderer->CreateTexture = GL_CreateTexture;
199 renderer->UpdateTexture = GL_UpdateTexture; 200 renderer->UpdateTexture = GL_UpdateTexture;
200 renderer->LockTexture = GL_LockTexture; 201 renderer->LockTexture = GL_LockTexture;
201 renderer->UnlockTexture = GL_UnlockTexture; 202 renderer->UnlockTexture = GL_UnlockTexture;
203 renderer->SetClipRect = GL_SetClipRect;
202 renderer->RenderClear = GL_RenderClear; 204 renderer->RenderClear = GL_RenderClear;
203 renderer->RenderDrawPoints = GL_RenderDrawPoints; 205 renderer->RenderDrawPoints = GL_RenderDrawPoints;
204 renderer->RenderDrawLines = GL_RenderDrawLines; 206 renderer->RenderDrawLines = GL_RenderDrawLines;
205 renderer->RenderFillRects = GL_RenderFillRects; 207 renderer->RenderFillRects = GL_RenderFillRects;
206 renderer->RenderCopy = GL_RenderCopy; 208 renderer->RenderCopy = GL_RenderCopy;
509 data->format, data->formattype, data->pixels); 511 data->format, data->formattype, data->pixels);
510 renderdata->glDisable(data->type); 512 renderdata->glDisable(data->type);
511 } 513 }
512 514
513 static void 515 static void
516 GL_SetClipRect(SDL_Renderer * renderer, const SDL_Rect * rect)
517 {
518 GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
519
520 GL_ActivateRenderer(renderer);
521
522 if (rect) {
523 int w, h;
524
525 SDL_GetWindowSize(renderer->window, &w, &h);
526 data->glScissor(rect->x, (h-(rect->y+rect->h)), rect->w, rect->h);
527 data->glEnable(GL_SCISSOR_TEST);
528 } else {
529 data->glDisable(GL_SCISSOR_TEST);
530 }
531 }
532
533 static void
514 GL_SetBlendMode(GL_RenderData * data, int blendMode) 534 GL_SetBlendMode(GL_RenderData * data, int blendMode)
515 { 535 {
516 if (blendMode != data->blendMode) { 536 if (blendMode != data->blendMode) {
517 switch (blendMode) { 537 switch (blendMode) {
518 case SDL_BLENDMODE_NONE: 538 case SDL_BLENDMODE_NONE: