From 42cfcce8d44d145b8f01ca9de71813608a7f2be4 Mon Sep 17 00:00:00 2001
From: Alan Hourihane <alanh@tungstengraphics.com>
Date: Fri, 14 Jan 2005 13:10:50 +0000
Subject: Get PolygonStipple working.. (or seemingly too). It seems to do the
 right things now given the demos I've used and passes glean's paths test.

---
 src/mesa/drivers/dri/unichrome/via_context.h |  2 --
 src/mesa/drivers/dri/unichrome/via_ioctl.c   | 14 ++--------
 src/mesa/drivers/dri/unichrome/via_state.c   | 38 ++++++----------------------
 3 files changed, 10 insertions(+), 44 deletions(-)

diff --git a/src/mesa/drivers/dri/unichrome/via_context.h b/src/mesa/drivers/dri/unichrome/via_context.h
index b8a58cc8df8..a1a86c9139f 100644
--- a/src/mesa/drivers/dri/unichrome/via_context.h
+++ b/src/mesa/drivers/dri/unichrome/via_context.h
@@ -303,8 +303,6 @@ struct via_context_t {
    GLuint swap_count;
    GLuint swap_missed_count;
 
-   GLuint stipple[32];
-
    PFNGLXGETUSTPROC get_ust;
 
 };
diff --git a/src/mesa/drivers/dri/unichrome/via_ioctl.c b/src/mesa/drivers/dri/unichrome/via_ioctl.c
index 7e7b933becb..e90ec0f78e4 100644
--- a/src/mesa/drivers/dri/unichrome/via_ioctl.c
+++ b/src/mesa/drivers/dri/unichrome/via_ioctl.c
@@ -542,18 +542,8 @@ static void via_emit_cliprect(viaContextPtr vmesa,
    vb[4] = ((HC_SubA_HDBBasL << 24) | (offset & 0xFFFFFF));
    vb[5] = ((HC_SubA_HDBBasH << 24) | ((offset & 0xFF000000)) >> 24); 
 
-   /* HSPXYOS seems to be ignored on CLE266, don't emit.  This is
-    * required for hardware stipple conformance (as long as we still
-    * have drawXoff).
-    */
-   if (vmesa->viaScreen->deviceID == VIA_CLE266) {
-      vb[6] = HC_DUMMY;
-      vb[7] = ((HC_SubA_HDBFM << 24) | HC_HDBLoc_Local | format | pitch);     
-   }
-   else {
-      vb[6] = ((HC_SubA_HDBFM << 24) | HC_HDBLoc_Local | format | pitch);     
-      vb[7] = ((HC_SubA_HSPXYOS << 24) | ((32 - vmesa->drawXoff) << HC_HSPXOS_SHIFT));
-   }
+   vb[6] = ((HC_SubA_HSPXYOS << 24) | ((31 - vmesa->drawXoff) << HC_HSPXOS_SHIFT));
+   vb[7] = ((HC_SubA_HDBFM << 24) | HC_HDBLoc_Local | format | pitch);     
 }
 
 
diff --git a/src/mesa/drivers/dri/unichrome/via_state.c b/src/mesa/drivers/dri/unichrome/via_state.c
index 2227653a032..23a9a8d719a 100644
--- a/src/mesa/drivers/dri/unichrome/via_state.c
+++ b/src/mesa/drivers/dri/unichrome/via_state.c
@@ -466,7 +466,7 @@ void viaEmitState(viaContextPtr vmesa)
    }
     
    if (ctx->Polygon.StippleFlag) {
-      GLuint *stipple = &vmesa->stipple[0];
+      GLuint *stipple = &ctx->PolygonStipple[0];
         
       BEGIN_RING(38);
       OUT_RING( HC_HEADER2 );             
@@ -505,8 +505,8 @@ void viaEmitState(viaContextPtr vmesa)
       OUT_RING( stipple[0] );             
       OUT_RING( HC_HEADER2 );                     
       OUT_RING( (HC_ParaType_NotTex << 16) );
-      OUT_RING( ((HC_SubA_HSPXYOS << 24) | (0x20 - (vmesa->driDrawable->h & 0x1F))) );
-      OUT_RING( ((HC_SubA_HSPXYOS << 24) | (0x20 - (vmesa->driDrawable->h & 0x1F))) );
+      OUT_RING( ((HC_SubA_HSPXYOS << 24) | (((31 - vmesa->drawX) & 0x1f) << HC_HSPXOS_SHIFT)));
+      OUT_RING( ((HC_SubA_HSPXYOS << 24) | (((31 - vmesa->drawX) & 0x1f) << HC_HSPXOS_SHIFT)));
       ADVANCE_RING();
    }
    
@@ -776,25 +776,6 @@ flip_bytes( GLubyte *p, GLuint n )
 }
 #endif
 
-static void viaPolygonStipple( GLcontext *ctx, const GLubyte *mask )
-{
-    viaContextPtr vmesa = VIA_CONTEXT(ctx);
-    GLubyte *s = (GLubyte *)vmesa->stipple;
-    int i;
-
-    /* Fallback for the CLE266 case.  Stipple works on the CLE266, but
-     * the stipple x/y offset registers don't seem to be respected,
-     * meaning that when drawXoff != 0, the stipple is rotated left or
-     * right by a few pixels, giving incorrect results.
-     */
-    if (vmesa->viaScreen->deviceID == VIA_CLE266) {
-   	FALLBACK( vmesa, VIA_FALLBACK_STIPPLE, ctx->Polygon.StippleFlag);
-    } else {
-    	for (i=0;i<128;i++) 
-       	    s[i] = mask[i];
-    }
-}
-
 void viaInitState(GLcontext *ctx)
 {
     viaContextPtr vmesa = VIA_CONTEXT(ctx);
@@ -1424,13 +1405,11 @@ static void viaChoosePolygonState(GLcontext *ctx)
         }
     }
 
-    if (vmesa->viaScreen->deviceID != VIA_CLE266) {
-        if (ctx->Polygon.StippleFlag) {
-            vmesa->regEnable |= HC_HenSP_MASK;
-        }
-        else {
-            vmesa->regEnable &= ~HC_HenSP_MASK;
-        }
+    if (ctx->Polygon.StippleFlag) {
+        vmesa->regEnable |= HC_HenSP_MASK;
+    }
+    else {
+        vmesa->regEnable &= ~HC_HenSP_MASK;
     }
 
     if (ctx->Polygon.CullFlag) {
@@ -1634,7 +1613,6 @@ void viaInitStateFuncs(GLcontext *ctx)
     ctx->Driver.DepthRange = viaDepthRange;
     ctx->Driver.Viewport = viaViewport;
     ctx->Driver.Enable = viaEnable;
-    ctx->Driver.PolygonStipple = viaPolygonStipple;
 
     /* Pixel path fallbacks.
      */
-- 
cgit v1.2.3