i965: Add support for MESA_FORMAT_RGB_FLOAT32 surfaces.

This is for GL_ARB_texture_buffer_object_rgb32 support, but it also
causes the format to get used for float32 rgb textures as well on
Ironlake and later.  Since that came with some surprises, separate
the change from the enable commit.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

diff --git a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
index 233cd9be050a59015ffc6eaef5db44f4157bf8bf..5e99592f4a521c112582784fea44bbc24968ee13 100644 (file)
--- a/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_surface_state.c
@@ -365,7 +365,7 @@ brw_format_for_mesa_format(gl_format mesa_format)
 
       [MESA_FORMAT_RGBA_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32A32_FLOAT,
       [MESA_FORMAT_RGBA_FLOAT16] = BRW_SURFACEFORMAT_R16G16B16A16_FLOAT,
-      [MESA_FORMAT_RGB_FLOAT32] = 0,
+      [MESA_FORMAT_RGB_FLOAT32] = BRW_SURFACEFORMAT_R32G32B32_FLOAT,
       [MESA_FORMAT_RGB_FLOAT16] = 0,
       [MESA_FORMAT_ALPHA_FLOAT32] = BRW_SURFACEFORMAT_A32_FLOAT,
       [MESA_FORMAT_ALPHA_FLOAT16] = BRW_SURFACEFORMAT_A16_FLOAT,