Added uniform and transform feedback state and setting on context.

TRAC #22753

Signed-off-by: Jamie Madill
Signed-off-by: Nicolas Capens
Author: Geoff Lang

git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2111 736b8ea6-26fd-11df-bfd4-992fa37f6226
diff --git a/src/libGLESv2/Context.cpp b/src/libGLESv2/Context.cpp
index 3067ead..9adacf7 100644
--- a/src/libGLESv2/Context.cpp
+++ b/src/libGLESv2/Context.cpp
@@ -240,6 +240,16 @@
     mTexture2DZero.set(NULL);
     mTextureCubeMapZero.set(NULL);
 
+    for (int i = 0; i < IMPLEMENTATION_MAX_COMBINED_SHADER_UNIFORM_BUFFERS; i++)
+    {
+        mState.uniformBuffers[i].set(NULL);
+    }
+
+    for (int i = 0; i < IMPLEMENTATION_MAX_TRANSFORM_FEEDBACK_BUFFERS; i++)
+    {
+        mState.transformFeedbackBuffers[i].set(NULL);
+    }
+
     mResourceManager->release();
 }
 
@@ -915,6 +925,20 @@
     mState.renderbuffer.set(getRenderbuffer(renderbuffer));
 }
 
+void Context::bindUniformBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size)
+{
+    mResourceManager->checkBufferAllocation(buffer);
+
+    mState.uniformBuffers[index].set(getBuffer(buffer), offset, size);
+}
+
+void Context::bindTransformFeedbackBuffer(GLuint buffer, GLuint index, GLintptr offset, GLsizeiptr size)
+{
+    mResourceManager->checkBufferAllocation(buffer);
+
+    mState.transformFeedbackBuffers[index].set(getBuffer(buffer), offset, size);
+}
+
 void Context::useProgram(GLuint program)
 {
     GLuint priorProgram = mState.currentProgram;
@@ -2172,11 +2196,22 @@
     return mRenderer->getMaxCombinedTextureImageUnits();
 }
 
+unsigned int Context::getMaximumCombinedUniformBufferBindings() const
+{
+    return mRenderer->getMaxVertexShaderUniformBuffers() +
+           mRenderer->getMaxFragmentShaderUniformBuffers();
+}
+
 int Context::getMaxSupportedSamples() const
 {
     return mRenderer->getMaxSupportedSamples();
 }
 
+unsigned int Context::getMaxTransformFeedbackBufferBindings() const
+{
+    return mRenderer->getMaxTransformFeedbackBuffers();
+}
+
 unsigned int Context::getMaximumRenderTargets() const
 {
     return mRenderer->getMaxRenderTargets();