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st/vega: Fix image sampler views for alpha-only formats.

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For alpha-only VG formats, R = G = B = 1.0.
This commit is contained in:
Chia-I Wu
2010-11-23 22:39:31 +08:00
parent 56f02cedfa
commit d873f1f5b6
1 changed files with 7 additions and 0 deletions
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src/gallium/state_trackers/vega/image.c
+7
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@@ -272,6 +272,13 @@ struct vg_image * image_create(VGImageFormat format,
debug_assert(newtex);
u_sampler_view_default_template(&view_templ, newtex, newtex->format);
/* R, G, and B are treated as 1.0 for alpha-only formats in OpenVG */
if (newtex->format == PIPE_FORMAT_A8_UNORM) {
view_templ.swizzle_r = PIPE_SWIZZLE_ONE;
view_templ.swizzle_g = PIPE_SWIZZLE_ONE;
view_templ.swizzle_b = PIPE_SWIZZLE_ONE;
}
view = pipe->create_sampler_view(pipe, newtex, &view_templ);
/* want the texture to go away if the view is freed */
pipe_resource_reference(&newtex, NULL);