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wgl: Take pixelformat color channels into account for choosing a PFD

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Otherwise there's no way to target PIPE_FORMAT_B4G4R4A4_UNORM instead
of the B5G6R5 or B5G5R5A1 if those are supported. This gets the behavior
closer to the Windows PFD selection.

Reviewed-by: Jose Fonseca <jfonseca@vmware.com>
Reviewed-by: Neha Bhende <bhenden@vmware.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/25979>
This commit is contained in:
Jesse Natalie
2023-10-31 14:00:55 -07:00
committed by Marge Bot
parent 2444a3cd46
commit 87c5589605
1 changed files with 21 additions and 1 deletions
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22
src/gallium/frontends/wgl/stw_pixelformat.c
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@@ -531,7 +531,6 @@ stw_pixelformat_choose(HDC hdc, CONST PIXELFORMATDESCRIPTOR *ppfd)
* - Giving no more bits than requested is given lowest priority.
*/
/* FIXME: Take in account individual channel bits */
if (ppfd->cColorBits && !pfi->pfd.cColorBits)
delta += 10000;
else if (ppfd->cColorBits > pfi->pfd.cColorBits)
@@ -560,6 +559,27 @@ stw_pixelformat_choose(HDC hdc, CONST PIXELFORMATDESCRIPTOR *ppfd)
else if (ppfd->cAlphaBits < pfi->pfd.cAlphaBits)
delta++;
if (ppfd->cRedBits && !pfi->pfd.cRedBits)
delta += 10000;
else if (ppfd->cRedBits > pfi->pfd.cRedBits)
delta += 100;
else if (ppfd->cRedBits < pfi->pfd.cRedBits)
delta++;
if (ppfd->cGreenBits && !pfi->pfd.cGreenBits)
delta += 10000;
else if (ppfd->cGreenBits > pfi->pfd.cGreenBits)
delta += 100;
else if (ppfd->cGreenBits < pfi->pfd.cGreenBits)
delta++;
if (ppfd->cBlueBits && !pfi->pfd.cBlueBits)
delta += 10000;
else if (ppfd->cBlueBits > pfi->pfd.cBlueBits)
delta += 100;
else if (ppfd->cBlueBits < pfi->pfd.cBlueBits)
delta++;
if (delta < bestdelta) {
bestindex = index;
bestdelta = delta;