Leahnaya/SDL
1
0
Fork 0
mirror of https://github.com/yawut/SDL.git synced 2026-08-21 16:24:37 -05:00
Code Issues Actions Packages Projects Releases Wiki Activity

Fixed GL_RenderReadPixels() - thanks Ryan!

Browse Source
This commit is contained in:
Sam Lantinga
2009-11-18 08:07:37 +00:00
parent a9553c1c3d
commit 9cc81118d2
1 changed files with 4 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

9
src/video/SDL_renderer_gl.c
View File

@@ -1257,6 +1257,7 @@ GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
Uint32 pixel_format, void * pixels, int pitch)
{
GL_RenderData *data = (GL_RenderData *) renderer->driverdata;
SDL_Window *window = SDL_GetWindowFromID(renderer->window);
GLint internalFormat;
GLenum format, type;
Uint8 *src, *dst, *tmp;
@@ -1276,13 +1277,10 @@ GL_RenderReadPixels(SDL_Renderer * renderer, const SDL_Rect * rect,
data->glPixelStorei(GL_PACK_ALIGNMENT, 1);
data->glPixelStorei(GL_PACK_ROW_LENGTH,
(pitch / bytes_per_pixel(pixel_format)));
data->glReadBuffer(GL_FRONT);
memset(pixels, 0xff, rect->h*pitch);
data->glReadPixels(rect->x, rect->y+rect->h-1, rect->w, rect->h,
data->glReadPixels(rect->x, (window->h-rect->y)-rect->h, rect->w, rect->h,
format, type, pixels);
#if 0
/* Flip the rows to be top-down */
length = rect->w * bytes_per_pixel(pixel_format);
src = (Uint8*)pixels + (rect->h-1)*pitch;
@@ -1293,9 +1291,10 @@ memset(pixels, 0xff, rect->h*pitch);
SDL_memcpy(tmp, dst, length);
SDL_memcpy(dst, src, length);
SDL_memcpy(src, tmp, length);
dst += pitch;
src -= pitch;
}
SDL_stack_free(tmp);
#endif
return 0;
}