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Fix incorrect implementation of WGL_COLOR_BITS_ARB.

This commit is contained in:
Raphael Junqueira 2005-11-24 19:21:38 +01:00 committed by Alexandre Julliard
parent cfca167ebb
commit 38c54b9d3b
1 changed files with 46 additions and 4 deletions
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50
dlls/opengl32/wgl_ext.c
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@ -340,6 +340,9 @@ static unsigned ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_G
unsigned nAttribs = 0;
unsigned cur = 0;
int pop;
int isColor = 0;
int wantColorBits = 0;
int sz_alpha = 0;
while (0 != iWGLAttr[cur]) {
TRACE("pAttr[%d] = %x\n", cur, iWGLAttr[cur]);
@ -347,8 +350,7 @@ static unsigned ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_G
switch (iWGLAttr[cur]) {
case WGL_COLOR_BITS_ARB:
pop = iWGLAttr[++cur];
PUSH2(oGLXAttr, GLX_BUFFER_SIZE, pop);
TRACE("pAttr[%d] = WGL_COLOR_BITS_ARB: %d\n", cur, pop);
wantColorBits = pop; /** see end */
break;
case WGL_BLUE_BITS_ARB:
pop = iWGLAttr[++cur];
@ -367,6 +369,7 @@ static unsigned ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_G
break;
case WGL_ALPHA_BITS_ARB:
pop = iWGLAttr[++cur];
sz_alpha = pop;
PUSH2(oGLXAttr, GLX_ALPHA_SIZE, pop);
TRACE("pAttr[%d] = GLX_ALPHA_SIZE: %d\n", cur, pop);
break;
@ -390,7 +393,7 @@ static unsigned ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_G
pop = iWGLAttr[++cur];
switch (pop) {
case WGL_TYPE_RGBA_ARB: pop = GLX_RGBA_BIT; break ;
case WGL_TYPE_COLORINDEX_ARB: pop = GLX_COLOR_INDEX_BIT; break ;
case WGL_TYPE_COLORINDEX_ARB: pop = GLX_COLOR_INDEX_BIT; isColor = 1; break ;
default:
ERR("unexpected PixelType(%x)\n", pop);
pop = 0;
@ -452,6 +455,37 @@ static unsigned ConvertAttribWGLtoGLX(const int* iWGLAttr, int* oGLXAttr, Wine_G
}
++cur;
}
/**
* Trick as WGL_COLOR_BITS_ARB != GLX_BUFFER_SIZE
* WGL_COLOR_BITS_ARB + WGL_ALPHA_BITS_ARB == GLX_BUFFER_SIZE
*
* WGL_COLOR_BITS_ARB
* The number of color bitplanes in each color buffer. For RGBA
* pixel types, it is the size of the color buffer, excluding the
* alpha bitplanes. For color-index pixels, it is the size of the
* color index buffer.
*
* GLX_BUFFER_SIZE
* This attribute defines the number of bits per color buffer.
* For GLX FBConfigs that correspond to a PseudoColor or StaticColor visual,
* this is equal to the depth value reported in the X11 visual.
* For GLX FBConfigs that correspond to TrueColor or DirectColor visual,
* this is the sum of GLX_RED_SIZE, GLX_GREEN_SIZE, GLX_BLUE_SIZE, and GLX_ALPHA_SIZE.
*
*/
if (0 < wantColorBits) {
if (!isColor) {
wantColorBits += sz_alpha;
}
if (32 < wantColorBits) {
ERR("buggy %d GLX_BUFFER_SIZE default to 32\n", wantColorBits);
wantColorBits = 32;
}
PUSH2(oGLXAttr, GLX_BUFFER_SIZE, wantColorBits);
TRACE("pAttr[%d] = WGL_COLOR_BITS_ARB: %d\n", cur, wantColorBits);
}
return nAttribs;
}
@ -534,8 +568,16 @@ GLboolean WINAPI wglGetPixelFormatAttribivARB(HDC hdc, int iPixelFormat, int iLa
continue ;
case WGL_COLOR_BITS_ARB:
curGLXAttr = GLX_BUFFER_SIZE;
/** see ConvertAttribWGLtoGLX for explain */
if (nCfgs < iPixelFormat || 0 >= iPixelFormat) goto pix_error;
curCfg = cfgs[iPixelFormat - 1];
hTest = glXGetFBConfigAttrib(display, curCfg, GLX_BUFFER_SIZE, piValues + i);
if (hTest) goto get_error;
hTest = glXGetFBConfigAttrib(display, curCfg, GLX_ALPHA_SIZE, &tmp);
if (hTest) goto get_error;
piValues[i] = piValues[i] - tmp;
break;
case WGL_BLUE_BITS_ARB:
curGLXAttr = GLX_BLUE_SIZE;
break;