From 0c19008f099861923d936cad00b51b520f38737d Mon Sep 17 00:00:00 2001
From: Daniel Borca <dborca@users.sourceforge.net>
Date: Mon, 8 Mar 2004 07:52:18 +0000
Subject: [PATCH] Voodoo Rush fixes

---
 src/mesa/drivers/glide/fxapi.c    |  1 +
 src/mesa/drivers/glide/fxdd.c     | 14 ++++++++++++--
 src/mesa/drivers/glide/fxglidew.c |  7 ++++---
 3 files changed, 17 insertions(+), 5 deletions(-)

diff --git a/src/mesa/drivers/glide/fxapi.c b/src/mesa/drivers/glide/fxapi.c
index 930534fcd89..20cf7240de5 100644
--- a/src/mesa/drivers/glide/fxapi.c
+++ b/src/mesa/drivers/glide/fxapi.c
@@ -397,6 +397,7 @@ fxMesaCreateContext(GLuint win,
  sliaa = 0;
  switch (voodoo->type) {
         case GR_SSTTYPE_VOODOO:
+        case GR_SSTTYPE_SST96:
         case GR_SSTTYPE_Banshee:
              fxMesa->bgrOrder = GL_TRUE;
              fxMesa->snapVertices = GL_TRUE;
diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index d2fb55d5702..55e2e87d0d0 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -1331,8 +1331,18 @@ fxDDInitFxMesaContext(fxMesaContext fxMesa)
       return 0;
    }
 
-   if (fxMesa->haveZBuffer)
-      grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
+   /* [dBorca] Hack alert:
+    * Unlike the rest of the Voodoo family, the Rush
+    * doesn't support ZBUFFER with WBUFFER-like depth functions!
+    * I guess we could use WBUFFER, which is better, but we can't
+    * because the depth span functions would need to translate
+    * depth values to 4.12 floating point...
+    */
+   if (fxMesa->haveZBuffer) {
+      grDepthBufferMode((fxMesa->type == GR_SSTTYPE_SST96)
+                        ? GR_DEPTHBUFFER_WBUFFER
+                        : GR_DEPTHBUFFER_ZBUFFER);
+   }
 
    if (!fxMesa->bgrOrder) {
       grLfbWriteColorFormat(GR_COLORFORMAT_ABGR);
diff --git a/src/mesa/drivers/glide/fxglidew.c b/src/mesa/drivers/glide/fxglidew.c
index e386b0d8250..6af9895f1ba 100644
--- a/src/mesa/drivers/glide/fxglidew.c
+++ b/src/mesa/drivers/glide/fxglidew.c
@@ -194,7 +194,9 @@ FX_grSstQueryHardware(GrHwConfiguration * config)
       grSstSelect(i);
 
       extension = grGetString(GR_HARDWARE);
-      if (strstr(extension, "Voodoo2")) {
+      if (strstr(extension, "Rush")) {
+         config->SSTs[i].type = GR_SSTTYPE_SST96;
+      } else if (strstr(extension, "Voodoo2")) {
          config->SSTs[i].type = GR_SSTTYPE_Voodoo2;
       } else if (strstr(extension, "Voodoo Banshee")) {
          config->SSTs[i].type = GR_SSTTYPE_Banshee;
@@ -204,8 +206,7 @@ FX_grSstQueryHardware(GrHwConfiguration * config)
          config->SSTs[i].type = GR_SSTTYPE_Voodoo4;
       } else if (strstr(extension, "Voodoo5")) {
          config->SSTs[i].type = GR_SSTTYPE_Voodoo5;
-      } else { /* Voodoo1,rush */
-         /* ZZZ TO DO: Need to distinguish whether we have V1 or Rush. */
+      } else {
          config->SSTs[i].type = GR_SSTTYPE_VOODOO;
       }
 
-- 
2.30.2