Implements PolygonOffset

TRAC #11719 Signed-off-by: Nicolas Capens Signed-off-by: Daniel Koch Author: Shannon Woods git-svn-id: https://angleproject.googlecode.com/svn/trunk@208 736b8ea6-26fd-11df-bfd4-992fa37f6226

Implements PolygonOffset
aede6301 · daniel@transgaming.com · c3a0e946 · aede6301 · aede6301
Commit aede6301 authored Apr 29, 2010 by daniel@transgaming.com
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Context.cpp src/libGLESv2/Context.cpp +12 -1

libGLESv2.cpp src/libGLESv2/libGLESv2.cpp +5 -2

No files found.
--- a/src/libGLESv2/Context.cpp
+++ b/src/libGLESv2/Context.cpp
@@ -1382,7 +1382,18 @@ void Context::applyState(GLenum drawMode)

    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)

--- a/src/libGLESv2/libGLESv2.cpp
+++ b/src/libGLESv2/libGLESv2.cpp
@@ -3448,9 +3448,12 @@ void __stdcall glPolygonOffset(GLfloat factor, GLfloat units)

    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&)