commit 7453fd2d325ffa323724547fcfce2f50d3ad6f57
author daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Apr 29 03:35:48 2010 +0000
committer daniel@transgaming.com <daniel@transgaming.com@736b8ea6-26fd-11df-bfd4-992fa37f6226> Thu Apr 29 03:35:48 2010 +0000
tree edd0f26da8e5cdf2e0cad1779a09cff019227d07
parent 078ab82fa44fca1dc317284dbe067de754513144

Implements PolygonOffset
TRAC #11719
Signed-off-by: Nicolas Capens
Signed-off-by: Daniel Koch

Author:    Shannon Woods

git-svn-id: http://angleproject.googlecode.com/svn/trunk@208 736b8ea6-26fd-11df-bfd4-992fa37f6226

src/libGLESv2/Context.cpp

diff --git a/src/libGLESv2/Context.cpp b/src/libGLESv2/Context.cpp
index cdfa7c0..d8ca70b 100644
--- a/src/libGLESv2/Context.cpp
+++ b/src/libGLESv2/Context.cpp
@@ -1382,7 +1382,18 @@
 
     if (polygonOffsetFill)
     {
-        UNIMPLEMENTED();   // FIXME
+        gl::Depthbuffer *depthbuffer = getFramebuffer()->getDepthbuffer();
+        if (depthbuffer)
+        {
+            device->SetRenderState(D3DRS_SLOPESCALEDEPTHBIAS, *((DWORD*)&polygonOffsetFactor));
+            float depthBias = ldexp(polygonOffsetUnits, -(int)(depthbuffer->getDepthSize()));
+            device->SetRenderState(D3DRS_DEPTHBIAS, *((DWORD*)&depthBias));
+        }
+    }
+    else
+    {
+        device->SetRenderState(D3DRS_SLOPESCALEDEPTHBIAS, 0);
+        device->SetRenderState(D3DRS_DEPTHBIAS, 0);
     }
 
     if (sampleAlphaToCoverage)

src/libGLESv2/libGLESv2.cpp

diff --git a/src/libGLESv2/libGLESv2.cpp b/src/libGLESv2/libGLESv2.cpp
index a6c1e11..46946eb 100644
--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -3448,9 +3448,12 @@
 
     try
     {
-        if (factor != 0.0f || units != 0.0f)
+        gl::Context *context = gl::getContext();
+
+        if (context)
         {
-            UNIMPLEMENTED();   // FIXME
+            context->polygonOffsetFactor = factor;
+            context->polygonOffsetUnits = units;
         }
     }
     catch(std::bad_alloc&)