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i965: Support MESA_FORMAT_SIGNED_RGBA_16.

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The hardware supports this format with no known quirks, so we may as
well enable it.

Alpha blending is not supported until Sandybridge, but as far as I can
tell, OpenGL doesn't require alpha blending on SNORM formats.  Plus, we
already expose R8G8B8A8_SNORM which has a similar restriction.

Fixes 6 piglit texwrap-2D-*SNORM* cases,
gl-3.1/required-sized-texture-formats, and 10 oglconform snorm-textures
subcases

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Eric Anholt <eric@anholt.net>
This commit is contained in:
Kenneth Graunke
2012-06-09 02:33:22 -07:00
committed by Eric Anholt
parent e7a4a2b18b
commit f56dfc3213
1 changed files with 1 additions and 1 deletions
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src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+1 -1
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@@ -430,7 +430,7 @@ brw_format_for_mesa_format(gl_format mesa_format)
[MESA_FORMAT_SIGNED_R16] = BRW_SURFACEFORMAT_R16_SNORM,
[MESA_FORMAT_SIGNED_GR1616] = BRW_SURFACEFORMAT_R16G16_SNORM,
[MESA_FORMAT_SIGNED_RGB_16] = 0,
[MESA_FORMAT_SIGNED_RGBA_16] = 0,
[MESA_FORMAT_SIGNED_RGBA_16] = BRW_SURFACEFORMAT_R16G16B16A16_SNORM,
[MESA_FORMAT_RGBA_16] = BRW_SURFACEFORMAT_R16G16B16A16_UNORM,
[MESA_FORMAT_RED_RGTC1] = BRW_SURFACEFORMAT_BC4_UNORM,