From 3821d15e06a62231b4a946d097d1455d7b0c5834 Mon Sep 17 00:00:00 2001
From: Eric Anholt <eric@anholt.net>
Date: Mon, 19 Nov 2007 14:37:14 -0800
Subject: [965] Add INTEL_DEBUG=fall debugging output.

---
 src/mesa/drivers/dri/i965/brw_fallback.c | 22 +++++++++++++++++-----
 1 file changed, 17 insertions(+), 5 deletions(-)

(limited to 'src/mesa/drivers')

diff --git a/src/mesa/drivers/dri/i965/brw_fallback.c b/src/mesa/drivers/dri/i965/brw_fallback.c
index 8c73cbbca9..3925dcf37b 100644
--- a/src/mesa/drivers/dri/i965/brw_fallback.c
+++ b/src/mesa/drivers/dri/i965/brw_fallback.c
@@ -39,6 +39,8 @@
 #include "macros.h"
 #include "mtypes.h"
 
+#define FILE_DEBUG_FLAG DEBUG_FALLBACKS
+
 static GLboolean do_check_fallback(struct brw_context *brw)
 {
    GLcontext *ctx = &brw->intel.ctx;
@@ -49,22 +51,29 @@ static GLboolean do_check_fallback(struct brw_context *brw)
    if (brw->metaops.active)
       return GL_FALSE;
 
-   if (brw->intel.no_rast)
+   if (brw->intel.no_rast) {
+      DBG("FALLBACK: rasterization disabled\n");
       return GL_TRUE;
-   
+   }
+
    /* _NEW_BUFFERS
     */
    if (ctx->DrawBuffer->_ColorDrawBufferMask[0] != BUFFER_BIT_FRONT_LEFT &&
-       ctx->DrawBuffer->_ColorDrawBufferMask[0] != BUFFER_BIT_BACK_LEFT)
+       ctx->DrawBuffer->_ColorDrawBufferMask[0] != BUFFER_BIT_BACK_LEFT) {
+      DBG("FALLBACK: draw buffer %d: 0x%08x\n",
+	  ctx->DrawBuffer->_ColorDrawBufferMask[0]);
       return GL_TRUE;
+   }
 
    /* _NEW_RENDERMODE
     *
     * XXX: need to save/restore RenderMode in metaops state, or
     * somehow move to a new attribs pointer:
     */
-   if (ctx->RenderMode != GL_RENDER)
+   if (ctx->RenderMode != GL_RENDER) {
+      DBG("FALLBACK: render mode\n");
       return GL_TRUE;
+   }
 
    /* _NEW_TEXTURE:
     */
@@ -73,8 +82,10 @@ static GLboolean do_check_fallback(struct brw_context *brw)
       if (texUnit->_ReallyEnabled) {
 	 struct intel_texture_object *intelObj = intel_texture_object(texUnit->_Current);
 	 struct gl_texture_image *texImage = intelObj->base.Image[0][intelObj->firstLevel];
-	 if (texImage->Border)
+	 if (texImage->Border) {
+	    DBG("FALLBACK: texture border\n");
 	    return GL_TRUE;
+	 }
       }
    }
    
@@ -82,6 +93,7 @@ static GLboolean do_check_fallback(struct brw_context *brw)
     */
    if (brw->attribs.Stencil->Enabled && 
        !brw->intel.hw_stencil) {
+      DBG("FALLBACK: stencil\n");
       return GL_TRUE;
    }
 
-- 
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