commit d18c744a37441311c9b65254a35db456835adad3
author Alex Sakhartchouk <alexst@google.com> Mon Jul 12 15:50:32 2010 -0700
committer Alex Sakhartchouk <alexst@google.com> Mon Jul 12 15:50:32 2010 -0700
tree f9ce6492b3f97435c4bc28ed89f244d8e9f12837
parent 479e2924807e1fff79de2e0bee2a67939d8659ee

Work on synchronizing a3d created files and java layer.
Adding culling to ProgramRaster

Change-Id: I58ccc82d37edc9539289d5eba44ea0e720874af5

rsProgramRaster.cpp

diff --git a/rsProgramRaster.cpp b/rsProgramRaster.cpp
index 7663840..5b69370 100644
--- a/rsProgramRaster.cpp
+++ b/rsProgramRaster.cpp
@@ -42,6 +42,7 @@
     mLineSmooth = lineSmooth;
     mPointSprite = pointSprite;
     mLineWidth = 1.0f;
+    mCull = RS_CULL_BACK;
 }
 
 ProgramRaster::~ProgramRaster()
@@ -51,14 +52,22 @@
 void ProgramRaster::setLineWidth(float s)
 {
     mLineWidth = s;
+    mDirty = true;
+}
+
+void ProgramRaster::setCullMode(RsCullMode mode)
+{
+    mCull = mode;
+    mDirty = true;
 }
 
 void ProgramRaster::setupGL(const Context *rsc, ProgramRasterState *state)
 {
-    if (state->mLast.get() == this) {
+    if (state->mLast.get() == this && !mDirty) {
         return;
     }
     state->mLast.set(this);
+    mDirty = false;
 
     if (mPointSmooth) {
         glEnable(GL_POINT_SMOOTH);
@@ -82,14 +91,43 @@
         }
 #endif //ANDROID_RS_BUILD_FOR_HOST
     }
+
+    switch(mCull) {
+        case RS_CULL_BACK:
+            glEnable(GL_CULL_FACE);
+            glCullFace(GL_BACK);
+            break;
+        case RS_CULL_FRONT:
+            glEnable(GL_CULL_FACE);
+            glCullFace(GL_FRONT);
+            break;
+        case RS_CULL_NONE:
+            glDisable(GL_CULL_FACE);
+            break;
+    }
 }
 
 void ProgramRaster::setupGL2(const Context *rsc, ProgramRasterState *state)
 {
-    if (state->mLast.get() == this) {
+    if (state->mLast.get() == this && !mDirty) {
         return;
     }
     state->mLast.set(this);
+    mDirty = false;
+
+    switch(mCull) {
+        case RS_CULL_BACK:
+            glEnable(GL_CULL_FACE);
+            glCullFace(GL_BACK);
+            break;
+        case RS_CULL_FRONT:
+            glEnable(GL_CULL_FACE);
+            glCullFace(GL_FRONT);
+            break;
+        case RS_CULL_NONE:
+            glDisable(GL_CULL_FACE);
+            break;
+    }
 }
 
 void ProgramRaster::serialize(OStream *stream) const
@@ -126,7 +164,7 @@
 namespace android {
 namespace renderscript {
 
-RsProgramRaster rsi_ProgramRasterCreate(Context * rsc, RsElement in, RsElement out,
+RsProgramRaster rsi_ProgramRasterCreate(Context * rsc,
                                       bool pointSmooth,
                                       bool lineSmooth,
                                       bool pointSprite)
@@ -145,6 +183,12 @@
     pr->setLineWidth(s);
 }
 
+void rsi_ProgramRasterSetCullMode(Context * rsc, RsProgramRaster vpr, RsCullMode mode)
+{
+    ProgramRaster *pr = static_cast<ProgramRaster *>(vpr);
+    pr->setCullMode(mode);
+}
+
 
 }
 }