wgl: Combine alpha pixelformat info in color.

src/gallium/state_trackers/wgl/shared/stw_arbpixelformat.c

@@ -185,11 +185,11 @@ stw_query_attrib(
       break;
 
    case WGL_ALPHA_BITS_ARB:
-      *pvalue = (int) pf->alpha.alphabits;
+      *pvalue = (int) pf->color.alphabits;
       break;
 
    case WGL_ALPHA_SHIFT_ARB:
-      *pvalue = (int) pf->alpha.alphashift;
+      *pvalue = (int) pf->color.alphashift;
       break;
 
    case WGL_ACCUM_BITS_ARB:

src/gallium/state_trackers/wgl/shared/stw_context.c

@@ -115,7 +115,7 @@ stw_create_layer_context(
       pf->color.redbits,
       pf->color.greenbits,
       pf->color.bluebits,
-      pf->alpha.alphabits,
+      pf->color.alphabits,
       0,
       pf->depth.depthbits,
       pf->depth.stencilbits,

src/gallium/state_trackers/wgl/shared/stw_pixelformat.c

@@ -43,57 +43,48 @@ stw_add_standard_pixelformats(
    uint flags )
 {
    struct stw_pixelformat_info *pf = *ppf;
-   struct stw_pixelformat_color_info color24 = { 8, 0, 8, 8, 8, 16 };
-   struct stw_pixelformat_alpha_info noalpha = { 0, 0 };
-   struct stw_pixelformat_alpha_info alpha8 = { 8, 24 };
+   struct stw_pixelformat_color_info color24 = { 8, 0, 8, 8, 8, 16, 0, 0 };
+   struct stw_pixelformat_color_info color24a8 = { 8, 0, 8, 8, 8, 16, 8, 24 };
    struct stw_pixelformat_depth_info depth24s8 = { 24, 8 };
    struct stw_pixelformat_depth_info depth16 = { 16, 0 };
 
    pf->flags = STW_PF_FLAG_DOUBLEBUFFER | flags;
    pf->color = color24;
-   pf->alpha = noalpha;
    pf->depth = depth24s8;
    pf++;
 
    pf->flags = STW_PF_FLAG_DOUBLEBUFFER | flags;
-   pf->color = color24;
-   pf->alpha = alpha8;
+   pf->color = color24a8;
    pf->depth = depth24s8;
    pf++;
 
    pf->flags = STW_PF_FLAG_DOUBLEBUFFER | flags;
    pf->color = color24;
-   pf->alpha = noalpha;
    pf->depth = depth16;
    pf++;
 
    pf->flags = STW_PF_FLAG_DOUBLEBUFFER | flags;
-   pf->color = color24;
-   pf->alpha = alpha8;
+   pf->color = color24a8;
    pf->depth = depth16;
    pf++;
 
    pf->flags = flags;
    pf->color = color24;
-   pf->alpha = noalpha;
    pf->depth = depth24s8;
    pf++;
 
    pf->flags = flags;
-   pf->color = color24;
-   pf->alpha = alpha8;
+   pf->color = color24a8;
    pf->depth = depth24s8;
    pf++;
 
    pf->flags = flags;
    pf->color = color24;
-   pf->alpha = noalpha;
    pf->depth = depth16;
    pf++;
 
    pf->flags = flags;
-   pf->color = color24;
-   pf->alpha = alpha8;
+   pf->color = color24a8;
    pf->depth = depth16;
    pf++;
 
@@ -171,8 +162,8 @@ stw_pixelformat_describe(
    ppfd->cGreenShift = pf->color.greenshift;
    ppfd->cBlueBits = pf->color.bluebits;
    ppfd->cBlueShift = pf->color.blueshift;
-   ppfd->cAlphaBits = pf->alpha.alphabits;
-   ppfd->cAlphaShift = pf->alpha.alphashift;
+   ppfd->cAlphaBits = pf->color.alphabits;
+   ppfd->cAlphaShift = pf->color.alphashift;
    ppfd->cAccumBits = 0;
    ppfd->cAccumRedBits = 0;
    ppfd->cAccumGreenBits = 0;
@@ -225,7 +216,7 @@ int stw_pixelformat_choose( HDC hdc,
       if (ppfd->cStencilBits != pf->depth.stencilbits)
          delta += 2;
 
-      if (ppfd->cAlphaBits != pf->alpha.alphabits)
+      if (ppfd->cAlphaBits != pf->color.alphabits)
          delta++;
 
       if (delta < bestdelta) {

src/gallium/state_trackers/wgl/shared/stw_pixelformat.h

@@ -42,10 +42,6 @@ struct stw_pixelformat_color_info
    uint greenshift;
    uint bluebits;
    uint blueshift;
-};
-
-struct stw_pixelformat_alpha_info
-{
    uint alphabits;
    uint alphashift;
 };
@@ -60,7 +56,6 @@ struct stw_pixelformat_info
 {
    uint flags;
    struct stw_pixelformat_color_info color;
-   struct stw_pixelformat_alpha_info alpha;
    struct stw_pixelformat_depth_info depth;
 };