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Fix bug from resizing the window with glsl gamma in use.

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This commit is contained in:
Shpoike 2020-06-19 21:23:04 +01:00
parent 36b2046f57
commit 1f521aadb2
1 changed files with 15 additions and 12 deletions
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27
Quake/gl_rmain.c
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@ -188,6 +188,7 @@ GLSLGamma_GammaCorrect
*/
void GLSLGamma_GammaCorrect (void)
{
int tw=glwidth,th=glheight;
float smax, tmax;
if (!gl_glsl_gamma_able)
@ -200,17 +201,21 @@ void GLSLGamma_GammaCorrect (void)
if (!r_gamma_texture)
{
glGenTextures (1, &r_gamma_texture);
glBindTexture (GL_TEXTURE_2D, r_gamma_texture);
r_gamma_texture_width = 0;
r_gamma_texture_height = 0;
}
GL_DisableMultitexture();
glBindTexture (GL_TEXTURE_2D, r_gamma_texture);
r_gamma_texture_width = glwidth;
r_gamma_texture_height = glheight;
if (!gl_texture_NPOT)
{
r_gamma_texture_width = TexMgr_Pad(r_gamma_texture_width);
r_gamma_texture_height = TexMgr_Pad(r_gamma_texture_height);
}
if (!gl_texture_NPOT)
{
tw = TexMgr_Pad(tw);
th = TexMgr_Pad(th);
}
if (r_gamma_texture_width != tw || r_gamma_texture_height != th)
{
r_gamma_texture_width = tw;
r_gamma_texture_height = th;
glTexImage2D (GL_TEXTURE_2D, 0, GL_RGBA8, r_gamma_texture_width, r_gamma_texture_height, 0, GL_BGRA, GL_UNSIGNED_INT_8_8_8_8_REV, NULL);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri (GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
@ -227,8 +232,6 @@ void GLSLGamma_GammaCorrect (void)
}
// copy the framebuffer to the texture
GL_DisableMultitexture();
glBindTexture (GL_TEXTURE_2D, r_gamma_texture);
glCopyTexSubImage2D (GL_TEXTURE_2D, 0, 0, 0, glx, gly, glwidth, glheight);
// draw the texture back to the framebuffer with a fragment shader