Mesa (master): i965: Set up the correct texture border color state struct for Ironlake.

[Eric Anholt]

Module: Mesa
Branch: master
Commit: 30f25a10190632a971e2b214c443e54afa463ead
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=30f25a10190632a971e2b214c443e54afa463ead

Author: Eric Anholt <eric at anholt.net>
Date:   Tue Jun 15 17:58:14 2010 -0700

i965: Set up the correct texture border color state struct for Ironlake.

This doesn't actually fix border color on Ironlake, but it appears to
be a requirement, and gen6 needs it too.

---

 src/mesa/drivers/dri/i965/brw_structs.h          |    9 +++++
 src/mesa/drivers/dri/i965/brw_wm_sampler_state.c |   41 +++++++++++++++++++---
 2 files changed, 45 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/dri/i965/brw_structs.h b/src/mesa/drivers/dri/i965/brw_structs.h
index 8f97bd1..0e1f3c9 100644
--- a/src/mesa/drivers/dri/i965/brw_structs.h
+++ b/src/mesa/drivers/dri/i965/brw_structs.h
@@ -1064,6 +1064,15 @@ struct brw_sampler_default_color {
    GLfloat color[4];
 };
 
+struct gen5_sampler_default_color {
+   uint8_t ub[4];
+   float f[4];
+   uint16_t hf[4];
+   uint16_t us[4];
+   int16_t s[4];
+   uint8_t b[4];
+};
+
 struct brw_sampler_state
 {
    
diff --git a/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c b/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
index fea96d3..e7c97a1 100644
--- a/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
+++ b/src/mesa/drivers/dri/i965/brw_wm_sampler_state.c
@@ -69,12 +69,43 @@ static GLuint translate_wrap_mode( GLenum wrap )
 static drm_intel_bo *upload_default_color( struct brw_context *brw,
 				     const GLfloat *color )
 {
-   struct brw_sampler_default_color sdc;
+   struct intel_context *intel = &brw->intel;
 
-   COPY_4V(sdc.color, color); 
-   
-   return brw_cache_data(&brw->cache, BRW_SAMPLER_DEFAULT_COLOR,
-			 &sdc, sizeof(sdc));
+   if (intel->gen >= 5) {
+      struct gen5_sampler_default_color sdc;
+
+      memset(&sdc, 0, sizeof(sdc));
+
+      UNCLAMPED_FLOAT_TO_UBYTE(sdc.ub[0], color[0]);
+      UNCLAMPED_FLOAT_TO_UBYTE(sdc.ub[1], color[1]);
+      UNCLAMPED_FLOAT_TO_UBYTE(sdc.ub[2], color[2]);
+      UNCLAMPED_FLOAT_TO_UBYTE(sdc.ub[3], color[3]);
+
+      UNCLAMPED_FLOAT_TO_USHORT(sdc.us[0], color[0]);
+      UNCLAMPED_FLOAT_TO_USHORT(sdc.us[1], color[1]);
+      UNCLAMPED_FLOAT_TO_USHORT(sdc.us[2], color[2]);
+      UNCLAMPED_FLOAT_TO_USHORT(sdc.us[3], color[3]);
+
+      UNCLAMPED_FLOAT_TO_SHORT(sdc.s[0], color[0]);
+      UNCLAMPED_FLOAT_TO_SHORT(sdc.s[1], color[1]);
+      UNCLAMPED_FLOAT_TO_SHORT(sdc.s[2], color[2]);
+      UNCLAMPED_FLOAT_TO_SHORT(sdc.s[3], color[3]);
+
+      /* XXX: Fill in half floats */
+      /* XXX: Fill in signed bytes */
+
+      COPY_4V(sdc.f, color);
+
+      return brw_cache_data(&brw->cache, BRW_SAMPLER_DEFAULT_COLOR,
+			    &sdc, sizeof(sdc));
+   } else {
+      struct brw_sampler_default_color sdc;
+
+      COPY_4V(sdc.color, color);
+
+      return brw_cache_data(&brw->cache, BRW_SAMPLER_DEFAULT_COLOR,
+			    &sdc, sizeof(sdc));
+   }
 }