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stw: Choose a color buffer format that matches the visual.

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The massive ifs are ugly, but it's not worth to automate this for just a
handful of formats.

Fixes conform bcolor.c.
This commit is contained in:
José Fonseca
2009-04-06 23:09:02 +01:00
parent f4d744af24
commit b4c0e1f9e1
1 changed files with 37 additions and 5 deletions
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src/gallium/state_trackers/wgl/shared/stw_framebuffer.c
+37 -5
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@@ -69,6 +69,14 @@ window_proc(
return CallWindowProc( fb->WndProc, hWnd, uMsg, wParam, lParam );
}
static INLINE boolean
stw_is_supported_color(enum pipe_format format)
{
struct pipe_screen *screen = stw_dev->screen;
return screen->is_format_supported(screen, format, PIPE_TEXTURE_2D,
PIPE_TEXTURE_USAGE_RENDER_TARGET, 0);
}
static INLINE boolean
stw_is_supported_depth_stencil(enum pipe_format format)
{
@@ -89,13 +97,33 @@ framebuffer_create(
struct stw_framebuffer *fb;
enum pipe_format colorFormat, depthFormat, stencilFormat;
fb = CALLOC_STRUCT( stw_framebuffer );
if (fb == NULL)
return NULL;
/* Determine PIPE_FORMATs for buffers.
*/
colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
if(visual->alphaBits <= 0 && visual->redBits <= 5 && visual->blueBits <= 6 && visual->greenBits <= 5 &&
stw_is_supported_color(PIPE_FORMAT_R5G6B5_UNORM)) {
colorFormat = PIPE_FORMAT_R5G6B5_UNORM;
}
else if(visual->alphaBits <= 0 && visual->redBits <= 8 && visual->blueBits <= 8 && visual->greenBits <= 8 &&
stw_is_supported_color(PIPE_FORMAT_X8R8G8B8_UNORM)) {
colorFormat = PIPE_FORMAT_X8R8G8B8_UNORM;
}
else if(visual->alphaBits <= 1 && visual->redBits <= 5 && visual->blueBits <= 5 && visual->greenBits <= 5 &&
stw_is_supported_color(PIPE_FORMAT_A1R5G5B5_UNORM)) {
colorFormat = PIPE_FORMAT_A1R5G5B5_UNORM;
}
else if(visual->alphaBits <= 4 && visual->redBits <= 4 && visual->blueBits <= 4 && visual->greenBits <= 4 &&
stw_is_supported_color(PIPE_FORMAT_A4R4G4B4_UNORM)) {
colorFormat = PIPE_FORMAT_A4R4G4B4_UNORM;
}
else if(visual->alphaBits <= 8 && visual->redBits <= 8 && visual->blueBits <= 8 && visual->greenBits <= 8 &&
stw_is_supported_color(PIPE_FORMAT_A8R8G8B8_UNORM)) {
colorFormat = PIPE_FORMAT_A8R8G8B8_UNORM;
}
else {
assert(0);
return NULL;
}
if (visual->depthBits == 0)
depthFormat = PIPE_FORMAT_NONE;
@@ -141,6 +169,10 @@ framebuffer_create(
stencilFormat = PIPE_FORMAT_NONE;
}
fb = CALLOC_STRUCT( stw_framebuffer );
if (fb == NULL)
return NULL;
fb->stfb = st_create_framebuffer(
visual,
colorFormat,