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i965: Add BRW_SURFACEFORMAT_R32G32_FLOAT_LD, required for IVB gather4 w/a

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gather4 GREEN channel against a surface with format R32G32_FLOAT doesn't work
correctly on IVB. w/a from bspec:

   - use R32G32_FLOAT_LD = 0x97 instead, for gather4 only.
   - select BLUE channel to read GREEN

Signed-off-by: Chris Forbes <chrisf@ijw.co.nz>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>
This commit is contained in:
Chris Forbes
2013-08-11 11:46:18 +12:00
parent cfa3c8a0d3
commit 855b2a8f4a
2 changed files with 2 additions and 0 deletions
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src/mesa/drivers/dri/i965/brw_defines.h
+1
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@@ -309,6 +309,7 @@
#define BRW_SURFACEFORMAT_R16G16B16A16_USCALED 0x094
#define BRW_SURFACEFORMAT_R32G32_SSCALED 0x095
#define BRW_SURFACEFORMAT_R32G32_USCALED 0x096
#define BRW_SURFACEFORMAT_R32G32_FLOAT_LD 0x097
#define BRW_SURFACEFORMAT_R32G32_SFIXED 0x0A0
#define BRW_SURFACEFORMAT_R64_PASSTHRU 0x0A1
#define BRW_SURFACEFORMAT_B8G8R8A8_UNORM 0x0C0
src/mesa/drivers/dri/i965/brw_surface_formats.c
+1
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@@ -110,6 +110,7 @@ const struct surface_format_info surface_formats[] = {
SF( Y, x, x, x, Y, x, Y, x, x, BRW_SURFACEFORMAT_R16G16B16A16_UINT)
SF( Y, Y, x, x, Y, Y, Y, x, x, BRW_SURFACEFORMAT_R16G16B16A16_FLOAT)
SF( Y, 50, x, x, Y, Y, Y, Y, x, BRW_SURFACEFORMAT_R32G32_FLOAT)
SF( Y, 70, x, x, Y, Y, Y, Y, x, BRW_SURFACEFORMAT_R32G32_FLOAT_LD)
SF( Y, x, x, x, Y, x, Y, Y, x, BRW_SURFACEFORMAT_R32G32_SINT)
SF( Y, x, x, x, Y, x, Y, Y, x, BRW_SURFACEFORMAT_R32G32_UINT)
SF( Y, 50, Y, x, x, x, x, x, x, BRW_SURFACEFORMAT_R32_FLOAT_X8X24_TYPELESS)