st/glx: Return a better format in choose_depth_stencil_format.
Return a better format instead of an exact format in choose_depth_stencil_format. Also, prefer formats with stencil bits.
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@ -274,7 +274,8 @@ choose_pixel_format(XMesaVisual v)
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}
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/**
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* Choose a depth/stencil format for the given depth and stencil sizes.
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* Choose a depth/stencil format that is "better" than the given depth and
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* stencil sizes.
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*/
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static enum pipe_format
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choose_depth_stencil_format(int depth, int stencil)
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@ -289,21 +290,16 @@ choose_depth_stencil_format(int depth, int stencil)
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assert(screen);
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count = 0;
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switch (depth) {
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case 16:
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if (!stencil)
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formats[count++] = PIPE_FORMAT_Z16_UNORM;
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break;
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case 24:
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if (depth <= 24 && stencil <= 8) {
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formats[count++] = PIPE_FORMAT_S8Z24_UNORM;
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formats[count++] = PIPE_FORMAT_Z24S8_UNORM;
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break;
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case 32:
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if (!stencil)
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}
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if (!stencil) {
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if (depth <= 16)
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formats[count++] = PIPE_FORMAT_Z16_UNORM;
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if (depth <= 32)
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formats[count++] = PIPE_FORMAT_Z32_UNORM;
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break;
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default:
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break;
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}
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fmt = PIPE_FORMAT_NONE;
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