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comparison src/video/SDL_renderer_gl.c @ 2230:9b7d29d2432b

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Optimized OpenGL renderer for Mac OS X. The SDL 1.2 API version of testsprite went from 120 FPS to 320 FPS. :)
author Sam Lantinga <slouken@libsdl.org>
date Sun, 12 Aug 2007 07:02:28 +0000
parents 926294b2bb4e
children fb01ee9716bc
comparison
equal deleted inserted replaced
2229:22342048bcb8 2230:9b7d29d2432b
29 #include "SDL_pixels_c.h" 29 #include "SDL_pixels_c.h"
30 #include "SDL_rect_c.h" 30 #include "SDL_rect_c.h"
31 #include "SDL_yuv_sw_c.h" 31 #include "SDL_yuv_sw_c.h"
32 32
33 /* OpenGL renderer implementation */ 33 /* OpenGL renderer implementation */
34
35 /* Details on optimizing the texture path on Mac OS X:
36 http://developer.apple.com/documentation/GraphicsImaging/Conceptual/OpenGL-MacProgGuide/opengl_texturedata/chapter_10_section_2.html
37 */
34 38
35 static const float inv255f = 1.0f / 255.0f; 39 static const float inv255f = 1.0f / 255.0f;
36 40
37 static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags); 41 static SDL_Renderer *GL_CreateRenderer(SDL_Window * window, Uint32 flags);
38 static int GL_ActivateRenderer(SDL_Renderer * renderer); 42 static int GL_ActivateRenderer(SDL_Renderer * renderer);
459 internalFormat = GL_RGB8; 463 internalFormat = GL_RGB8;
460 format = GL_RGBA; 464 format = GL_RGBA;
461 type = GL_UNSIGNED_BYTE; 465 type = GL_UNSIGNED_BYTE;
462 break; 466 break;
463 case SDL_PIXELFORMAT_ARGB8888: 467 case SDL_PIXELFORMAT_ARGB8888:
468 #ifdef __MACOSX__
469 internalFormat = GL_RGBA;
470 format = GL_BGRA;
471 type = GL_UNSIGNED_INT_8_8_8_8_REV;
472 #else
464 internalFormat = GL_RGBA8; 473 internalFormat = GL_RGBA8;
465 format = GL_BGRA; 474 format = GL_BGRA;
466 type = GL_UNSIGNED_BYTE; 475 type = GL_UNSIGNED_BYTE;
476 #endif
467 break; 477 break;
468 case SDL_PIXELFORMAT_ABGR8888: 478 case SDL_PIXELFORMAT_ABGR8888:
469 internalFormat = GL_RGBA8; 479 internalFormat = GL_RGBA8;
470 format = GL_RGBA; 480 format = GL_RGBA;
471 type = GL_UNSIGNED_BYTE; 481 type = GL_UNSIGNED_BYTE;
524 data->texh = (GLfloat) texture->h / texture_h; 534 data->texh = (GLfloat) texture->h / texture_h;
525 } 535 }
526 data->format = format; 536 data->format = format;
527 data->formattype = type; 537 data->formattype = type;
528 renderdata->glBindTexture(data->type, data->texture); 538 renderdata->glBindTexture(data->type, data->texture);
529 renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w, 539 renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
530 texture_h, 0, format, type, NULL); 540 GL_NEAREST);
541 renderdata->glTexParameteri(data->type, GL_TEXTURE_MAG_FILTER,
542 GL_NEAREST);
543 renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_S,
544 GL_CLAMP_TO_EDGE);
545 renderdata->glTexParameteri(data->type, GL_TEXTURE_WRAP_T,
546 GL_CLAMP_TO_EDGE);
547 #ifdef __MACOSX__
548 #ifndef GL_TEXTURE_STORAGE_HINT_APPLE
549 #define GL_TEXTURE_STORAGE_HINT_APPLE 0x85BC
550 #endif
551 #ifndef STORAGE_CACHED_APPLE
552 #define STORAGE_CACHED_APPLE 0x85BE
553 #endif
554 #ifndef STORAGE_SHARED_APPLE
555 #define STORAGE_SHARED_APPLE 0x85BF
556 #endif
557 if (texture->access == SDL_TEXTUREACCESS_STREAMING) {
558 renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
559 GL_STORAGE_SHARED_APPLE);
560 } else {
561 renderdata->glTexParameteri(data->type, GL_TEXTURE_STORAGE_HINT_APPLE,
562 GL_STORAGE_CACHED_APPLE);
563 }
564 if (data->pixels && internalFormat == GL_RGBA && format == GL_BGRA
565 && type == GL_UNSIGNED_INT_8_8_8_8_REV && data->pixels) {
566 renderdata->glPixelStorei(GL_UNPACK_CLIENT_STORAGE_APPLE, GL_TRUE);
567 renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
568 texture_h, 0, format, type, data->pixels);
569 } else
570 #endif
571 {
572 renderdata->glTexImage2D(data->type, 0, internalFormat, texture_w,
573 texture_h, 0, format, type, NULL);
574 }
531 result = renderdata->glGetError(); 575 result = renderdata->glGetError();
532 if (result != GL_NO_ERROR) { 576 if (result != GL_NO_ERROR) {
533 GL_SetError("glTexImage2D()", result); 577 GL_SetError("glTexImage2D()", result);
534 return -1; 578 return -1;
535 } 579 }