* Added options for disabling the fast path (render stage) and vertex DMA

* Fixed disabling of the render stage
* Added debug output for per-primitive fallbacks
* Bumped driver date

src/mesa/drivers/dri/savage/savage_xmesa.c

@@ -57,6 +57,19 @@
 
 #include "xmlpool.h"
 
+/* Driver-specific options
+ */
+#define SAVAGE_ENABLE_VDMA(def) \
+DRI_CONF_OPT_BEGIN(enable_vdma,bool,def) \
+	DRI_CONF_DESC(en,"Use DMA for vertex transfers") \
+	DRI_CONF_DESC(de,"Benutze DMA für Vertextransfers") \
+DRI_CONF_OPT_END
+#define SAVAGE_ENABLE_FASTPATH(def) \
+DRI_CONF_OPT_BEGIN(enable_fastpath,bool,def) \
+	DRI_CONF_DESC(en,"Use fast path for unclipped primitives") \
+	DRI_CONF_DESC(de,"Schneller Codepfad für ungeschnittene Polygone") \
+DRI_CONF_OPT_END
+
 /* Configuration
  */
 PUBLIC const char __driConfigOptions[] =
@@ -68,12 +81,14 @@ DRI_CONF_BEGIN
     DRI_CONF_SECTION_END
     DRI_CONF_SECTION_PERFORMANCE
         DRI_CONF_MAX_TEXTURE_UNITS(2,1,2)
+        SAVAGE_ENABLE_VDMA(true)
+        SAVAGE_ENABLE_FASTPATH(true)
     DRI_CONF_SECTION_END
     DRI_CONF_SECTION_DEBUG
         DRI_CONF_NO_RAST(false)
     DRI_CONF_SECTION_END
 DRI_CONF_END;
-static const GLuint __driNConfigOptions = 5;
+static const GLuint __driNConfigOptions = 7;
 
 #ifdef USE_NEW_INTERFACE
 static PFNGLXCREATECONTEXTMODES create_context_modes = NULL;
@@ -470,13 +485,15 @@ savageCreateContext( const __GLcontextModes *mesaVis,
    /* DRM versions before 2.1.3 would only render triangle lists. ELTS
     * support was added in 2.2.0. */
    if (sPriv->drmMinor < 2) {
-      _savage_render_stage.active = GL_FALSE;
+      imesa->enable_fastpath = GL_FALSE;
       fprintf (stderr,
 	       "*** Disabling fast path because your DRM version is buggy "
 	       "or doesn't\n*** support ELTS. You need at least Savage DRM "
 	       "version 2.2.\n");
-   }
-
+   } else
+      imesa->enable_fastpath = driQueryOptionb(&imesa->optionCache,
+					       "enable_fastpath");
+   imesa->enable_vdma = driQueryOptionb(&imesa->optionCache, "enable_vdma");
 
    /* Configure swrast to match hardware characteristics:
     */
@@ -520,6 +537,7 @@ savageDestroyContext(__DRIcontextPrivate *driContextPriv)
       savageFlushVertices(imesa);
       savageReleaseIndexedVerts(imesa);
       savageFlushCmdBuf(imesa, GL_TRUE); /* release DMA buffer */
+      WAIT_IDLE_EMPTY;
 
       /* update for multi-tex*/ 
       {

src/mesa/drivers/dri/savage/savagecontext.h

@@ -304,6 +304,8 @@ struct savage_context_t {
     GLint texture_depth;
     GLboolean no_rast;
     GLboolean float_depth;
+    GLboolean enable_fastpath;
+    GLboolean enable_vdma;
 };
 
 #define SAVAGE_CONTEXT(ctx) ((savageContextPtr)(ctx->DriverCtx))

src/mesa/drivers/dri/savage/savagedd.c

@@ -41,7 +41,7 @@
 #include "utils.h"
 
 
-#define DRIVER_DATE "20050110"
+#define DRIVER_DATE "20050120"
 
 /***************************************
  * Mesa's Driver Functions

src/mesa/drivers/dri/savage/savagerender.c

@@ -215,6 +215,7 @@ static void savage_check_render( GLcontext *ctx,
 				 struct tnl_pipeline_stage *stage )
 {
    stage->inputs = TNL_CONTEXT(ctx)->render_inputs;
+   stage->active = SAVAGE_CONTEXT(ctx)->enable_fastpath;
 }
 
 static void dtr( struct tnl_pipeline_stage *stage )

src/mesa/drivers/dri/savage/savagetris.c

@@ -738,6 +738,10 @@ static void savageChooseRenderState(GLcontext *ctx)
 	 if (flags & LINE_FALLBACK)  imesa->draw_line = savage_fallback_line;
 	 if (flags & TRI_FALLBACK)   imesa->draw_tri = savage_fallback_tri;
 	 index |= SAVAGE_FALLBACK_BIT;
+	 if (SAVAGE_DEBUG & DEBUG_FALLBACKS) {
+	    fprintf (stderr, "Per-primitive fallback, TriangleCaps=0x%x\n",
+		     ctx->_TriangleCaps);
+	 }
       }
    }
 
@@ -1032,17 +1036,19 @@ static __inline__ GLuint savageChooseVertexFormat_s4( GLcontext *ctx )
    if (setupIndex == imesa->SetupIndex && imesa->vertex_size != 0)
       return setupIndex;
 
-   mask = SAVAGE_SKIP_W;
-   size = 10 - (skip & 1) - (skip >> 1 & 1) -
-      (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
-      (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
+   if (imesa->enable_vdma) {
+      mask = SAVAGE_SKIP_W;
+      size = 10 - (skip & 1) - (skip >> 1 & 1) -
+	 (skip >> 2 & 1) - (skip >> 3 & 1) - (skip >> 4 & 1) -
+	 (skip >> 5 & 1) - (skip >> 6 & 1) - (skip >> 7 & 1);
 
-   while (size < 8) {
-      if (skip & mask) {
-	 skip &= ~mask;
-	 size++;
+      while (size < 8) {
+	 if (skip & mask) {
+	    skip &= ~mask;
+	    size++;
+	 }
+	 mask <<= 1;
       }
-      mask <<= 1;
    }
 
    imesa->vertex_attr_count = 0;
@@ -1167,7 +1173,7 @@ static void savageRenderStart( GLcontext *ctx )
 	  * discard the DMA buffer, if we were using one. */
 	 savageFlushVertices(imesa);
 	 savageFlushCmdBuf(imesa, GL_TRUE);
-	 if (hwVertexSize == 8) {
+	 if (hwVertexSize == 8 && imesa->enable_vdma) {
 	    if (SAVAGE_DEBUG & DEBUG_DMA)
 	       fprintf (stderr, "Using DMA, skip=0x%02x\n", imesa->skip);
 	    /* we can use vertex dma */