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sdl: Attempt to fix flickering garbage data in OpenGL fullscreen mode with fglrx (and possibly other drivers using page flipping)

This commit is contained in:
plombo 2011-02-09 05:05:13 +00:00
parent 8c51e45f7e
commit 1837acd0dd
1 changed files with 8 additions and 2 deletions
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10
src/drivers/sdl/sdl-opengl.cpp
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@ -90,6 +90,7 @@ SetOpenGLPalette(uint8 *data)
void
BlitOpenGL(uint8 *buf)
{
p_glClear(GL_COLOR_BUFFER_BIT);
p_glBindTexture(GL_TEXTURE_2D, textures[0]);
if(HiBuffer) {
Blit8ToHigh(buf, (uint8*)HiBuffer, 256, 240, 256*4, 1, 1);
@ -277,11 +278,16 @@ InitOpenGL(int l,
p_glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_S,GL_CLAMP);
p_glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_WRAP_T,GL_CLAMP);
p_glEnable(GL_TEXTURE_2D);
p_glDisable(GL_DEPTH_TEST);
p_glClearColor(0.0f, 0.0f, 0.0f, 0.0f); // Background color to black.
p_glMatrixMode(GL_MODELVIEW);
p_glClear(GL_COLOR_BUFFER_BIT);
p_glLoadIdentity();
// In a double buffered setup with page flipping, be sure to clear both buffers.
p_glClear(GL_COLOR_BUFFER_BIT);
SDL_GL_SwapBuffers();
p_glClear(GL_COLOR_BUFFER_BIT);
SDL_GL_SwapBuffers();
return(1);
}