From 2c30fd84dfa052949a117c78d932b58c1f88b446 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Thu, 9 Apr 2009 18:30:12 -0700
Subject: intel: Add support for argb1555, argb4444 FBOs and fix rgb565 fbo
 readpixels.

Also enable them all regardless of screen bpp, as 32 bpp what I've been
testing against, and haven't been able to detect any screen bpp-specific
troubles with them.
---
 src/mesa/drivers/dri/i915/i830_vtbl.c | 30 ++++++++++++++++++++++++------
 1 file changed, 24 insertions(+), 6 deletions(-)

(limited to 'src/mesa/drivers/dri/i915/i830_vtbl.c')

diff --git a/src/mesa/drivers/dri/i915/i830_vtbl.c b/src/mesa/drivers/dri/i915/i830_vtbl.c
index 1a94921078..3bf02de61f 100644
--- a/src/mesa/drivers/dri/i915/i830_vtbl.c
+++ b/src/mesa/drivers/dri/i915/i830_vtbl.c
@@ -26,12 +26,14 @@
  **************************************************************************/
 
 #include "glapi/glapi.h"
+#include "main/texformat.h"
 
 #include "i830_context.h"
 #include "i830_reg.h"
 #include "intel_batchbuffer.h"
 #include "intel_regions.h"
 #include "intel_tris.h"
+#include "intel_fbo.h"
 #include "tnl/t_context.h"
 #include "tnl/t_vertex.h"
 
@@ -614,6 +616,8 @@ i830_state_draw_region(struct intel_context *intel,
 {
    struct i830_context *i830 = i830_context(&intel->ctx);
    GLcontext *ctx = &intel->ctx;
+   struct gl_renderbuffer *rb = ctx->DrawBuffer->_ColorDrawBuffers[0];
+   struct intel_renderbuffer *irb = intel_renderbuffer(rb);
    GLuint value;
 
    ASSERT(state == &i830->state || state == &i830->meta);
@@ -651,13 +655,27 @@ i830_state_draw_region(struct intel_context *intel,
     */
    value = (DSTORG_HORT_BIAS(0x8) |     /* .5 */
             DSTORG_VERT_BIAS(0x8) | DEPTH_IS_Z);    /* .5 */
-            
-   if (color_region && color_region->cpp == 4) {
-      value |= DV_PF_8888;
-   }
-   else {
-      value |= DV_PF_565;
+
+   if (irb != NULL) {
+      switch (irb->texformat->MesaFormat) {
+      case MESA_FORMAT_ARGB8888:
+	 value |= DV_PF_8888;
+	 break;
+      case MESA_FORMAT_RGB565:
+	 value |= DV_PF_565;
+	 break;
+      case MESA_FORMAT_ARGB1555:
+	 value |= DV_PF_1555;
+	 break;
+      case MESA_FORMAT_ARGB4444:
+	 value |= DV_PF_4444;
+	 break;
+      default:
+	 _mesa_problem(ctx, "Bad renderbuffer format: %d\n",
+		       irb->texformat->MesaFormat);
+      }
    }
+
    if (depth_region && depth_region->cpp == 4) {
       value |= DEPTH_FRMT_24_FIXED_8_OTHER;
    }
-- 
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