From 462f18c7b25fe3e467f837647d07ab0a78aa8d2b Mon Sep 17 00:00:00 2001
From: marha <marha@users.sourceforge.net>
Date: Sun, 22 Feb 2015 21:39:56 +0100
Subject: Merged origin/release (checked in because wanted to merge new stuff)

---
 mesalib/src/mesa/main/polygon.c | 84 ++++++++++++++++++++++-------------------
 1 file changed, 46 insertions(+), 38 deletions(-)

(limited to 'mesalib/src/mesa/main/polygon.c')

diff --git a/mesalib/src/mesa/main/polygon.c b/mesalib/src/mesa/main/polygon.c
index 76d601977..a1f0aa02d 100644
--- a/mesalib/src/mesa/main/polygon.c
+++ b/mesalib/src/mesa/main/polygon.c
@@ -176,19 +176,18 @@ _mesa_PolygonMode( GLenum face, GLenum mode )
 
 
 /**
- * This routine updates the ctx->Polygon.Stipple state.
- * If we're getting the stipple data from a PBO, we map the buffer
- * in order to access the data.
- * In any case, we obey the current pixel unpacking parameters when fetching
- * the stipple data.
- *
- * In the future, this routine should be used as a fallback, called via
- * ctx->Driver.PolygonStipple().  We'll have to update all the DRI drivers
- * too.
+ * Called by glPolygonStipple.
  */
-void
-_mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern)
+void GLAPIENTRY
+_mesa_PolygonStipple(const GLubyte *pattern)
 {
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE & VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonStipple\n");
+
+   FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);
+
    pattern = _mesa_map_validate_pbo_source(ctx, 2,
                                            &ctx->Unpack, 32, 32, 1,
                                            GL_COLOR_INDEX, GL_BITMAP,
@@ -200,23 +199,6 @@ _mesa_polygon_stipple(struct gl_context *ctx, const GLubyte *pattern)
    _mesa_unpack_polygon_stipple(pattern, ctx->PolygonStipple, &ctx->Unpack);
 
    _mesa_unmap_pbo_source(ctx, &ctx->Unpack);
-}
-
-
-/**
- * Called by glPolygonStipple.
- */
-void GLAPIENTRY
-_mesa_PolygonStipple( const GLubyte *pattern )
-{
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (MESA_VERBOSE&VERBOSE_API)
-      _mesa_debug(ctx, "glPolygonStipple\n");
-
-   FLUSH_VERTICES(ctx, _NEW_POLYGONSTIPPLE);
-
-   _mesa_polygon_stipple(ctx, pattern);
 
    if (ctx->Driver.PolygonStipple)
       ctx->Driver.PolygonStipple(ctx, pattern);
@@ -253,25 +235,33 @@ _mesa_GetPolygonStipple( GLubyte *dest )
    _mesa_GetnPolygonStippleARB(INT_MAX, dest);
 }
 
-
-void GLAPIENTRY
-_mesa_PolygonOffset( GLfloat factor, GLfloat units )
+void
+_mesa_polygon_offset_clamp(struct gl_context *ctx,
+                           GLfloat factor, GLfloat units, GLfloat clamp)
 {
-   GET_CURRENT_CONTEXT(ctx);
-
-   if (MESA_VERBOSE&VERBOSE_API)
-      _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);
-
    if (ctx->Polygon.OffsetFactor == factor &&
-       ctx->Polygon.OffsetUnits == units)
+       ctx->Polygon.OffsetUnits == units &&
+       ctx->Polygon.OffsetClamp == clamp)
       return;
 
    FLUSH_VERTICES(ctx, _NEW_POLYGON);
    ctx->Polygon.OffsetFactor = factor;
    ctx->Polygon.OffsetUnits = units;
+   ctx->Polygon.OffsetClamp = clamp;
 
    if (ctx->Driver.PolygonOffset)
-      ctx->Driver.PolygonOffset( ctx, factor, units );
+      ctx->Driver.PolygonOffset( ctx, factor, units, clamp );
+}
+
+void GLAPIENTRY
+_mesa_PolygonOffset( GLfloat factor, GLfloat units )
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonOffset %f %f\n", factor, units);
+
+   _mesa_polygon_offset_clamp(ctx, factor, units, 0.0);
 }
 
 
@@ -283,6 +273,23 @@ _mesa_PolygonOffsetEXT( GLfloat factor, GLfloat bias )
    _mesa_PolygonOffset(factor, bias * ctx->DrawBuffer->_DepthMaxF );
 }
 
+void GLAPIENTRY
+_mesa_PolygonOffsetClampEXT( GLfloat factor, GLfloat units, GLfloat clamp )
+{
+   GET_CURRENT_CONTEXT(ctx);
+
+   if (!ctx->Extensions.EXT_polygon_offset_clamp) {
+      _mesa_error(ctx, GL_INVALID_OPERATION,
+                  "unsupported function (glPolygonOffsetClampEXT) called");
+      return;
+   }
+
+   if (MESA_VERBOSE&VERBOSE_API)
+      _mesa_debug(ctx, "glPolygonOffsetClampEXT %f %f %f\n", factor, units, clamp);
+
+   _mesa_polygon_offset_clamp(ctx, factor, units, clamp);
+}
+
 
 
 /**********************************************************************/
@@ -310,6 +317,7 @@ void _mesa_init_polygon( struct gl_context * ctx )
    ctx->Polygon.StippleFlag = GL_FALSE;
    ctx->Polygon.OffsetFactor = 0.0F;
    ctx->Polygon.OffsetUnits = 0.0F;
+   ctx->Polygon.OffsetClamp = 0.0F;
    ctx->Polygon.OffsetPoint = GL_FALSE;
    ctx->Polygon.OffsetLine = GL_FALSE;
    ctx->Polygon.OffsetFill = GL_FALSE;
-- 
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