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comparison src/video/SDL_renderer_gl.c @ 2839:f89700cc9272

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Progress, maybe. :)
author Sam Lantinga <slouken@libsdl.org>
date Sat, 06 Dec 2008 17:41:01 +0000
parents b128b94ed31e
children 53ca0d758b0a
comparison
equal deleted inserted replaced
2838:00356f22195a 2839:f89700cc9272
43 43
44 /* !!! FIXME: this should go in a higher level than the GL renderer. */ 44 /* !!! FIXME: this should go in a higher level than the GL renderer. */
45 static __inline__ int 45 static __inline__ int
46 bytes_per_pixel(const Uint32 format) 46 bytes_per_pixel(const Uint32 format)
47 { 47 {
48 if (!SDL_ISPIXELFORMAT_FOURCC(format)) {
49 return SDL_BYTESPERPIXEL(format);
50 }
51
52 /* FOURCC format */
48 switch (format) { 53 switch (format) {
54 case SDL_PIXELFORMAT_YV12:
55 case SDL_PIXELFORMAT_IYUV:
56 case SDL_PIXELFORMAT_YUY2:
49 case SDL_PIXELFORMAT_UYVY: 57 case SDL_PIXELFORMAT_UYVY:
50 /* !!! FIXME: other YUV formats here... */ 58 case SDL_PIXELFORMAT_YVYU:
51 return 2; 59 return 2;
52 default: 60 default:
53 return SDL_BYTESPERPIXEL(format); 61 return 1; /* shouldn't ever hit this. */
54 } 62 }
55 return -1; /* shouldn't ever hit this. */
56 } 63 }
57 64
58 65
59 static const float inv255f = 1.0f / 255.0f; 66 static const float inv255f = 1.0f / 255.0f;
60 67
721 texture_h = power_of_2(texture->h); 728 texture_h = power_of_2(texture->h);
722 data->texw = (GLfloat) (texture->w) / texture_w; 729 data->texw = (GLfloat) (texture->w) / texture_w;
723 data->texh = (GLfloat) texture->h / texture_h; 730 data->texh = (GLfloat) texture->h / texture_h;
724 } 731 }
725 732
733 /* YUV formats use RGBA but are really two bytes per pixel */
734 if (internalFormat == GL_RGBA && bytes_per_pixel(texture->format) < 4) {
735 texture_w = (texture_w * bytes_per_pixel(texture->format)) / 4;
736 }
737
726 data->format = format; 738 data->format = format;
727 data->formattype = type; 739 data->formattype = type;
728 renderdata->glBindTexture(data->type, data->texture); 740 renderdata->glBindTexture(data->type, data->texture);
729 renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER, 741 renderdata->glTexParameteri(data->type, GL_TEXTURE_MIN_FILTER,
730 GL_NEAREST); 742 GL_NEAREST);