1 files changed, 112 insertions, 0 deletions
diff --git a/libs/hwui/RenderState.cpp b/libs/hwui/RenderState.cpp
new file mode 100644
index 0000000..97f379d
--- /dev/null
+++ b/libs/hwui/RenderState.cpp
@@ -0,0 +1,112 @@
+/*
+ * Copyright (C) 2014 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#include "RenderState.h"
+
+namespace android {
+namespace uirenderer {
+
+RenderState::RenderState()
+        : mCaches(NULL)
+        , mViewportWidth(0)
+        , mViewportHeight(0)
+        , mFramebuffer(0) {
+}
+
+RenderState::~RenderState() {
+}
+
+void RenderState::onGLContextCreated() {
+    // This is delayed because the first access of Caches makes GL calls
+    mCaches = &Caches::getInstance();
+    mCaches->init();
+}
+
+void RenderState::setViewport(GLsizei width, GLsizei height) {
+    mViewportWidth = width;
+    mViewportHeight = height;
+    glViewport(0, 0, mViewportWidth, mViewportHeight);
+}
+
+
+void RenderState::getViewport(GLsizei* outWidth, GLsizei* outHeight) {
+    *outWidth = mViewportWidth;
+    *outHeight = mViewportHeight;
+}
+
+void RenderState::bindFramebuffer(GLuint fbo) {
+    if (mFramebuffer != fbo) {
+        mFramebuffer = fbo;
+        glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
+    }
+}
+
+void RenderState::invokeFunctor(Functor* functor, DrawGlInfo::Mode mode, DrawGlInfo* info) {
+    interruptForFunctorInvoke();
+    (*functor)(mode, info);
+    resumeFromFunctorInvoke();
+}
+
+void RenderState::interruptForFunctorInvoke() {
+    if (mCaches->currentProgram) {
+        if (mCaches->currentProgram->isInUse()) {
+            mCaches->currentProgram->remove();
+            mCaches->currentProgram = NULL;
+        }
+    }
+    mCaches->resetActiveTexture();
+    mCaches->unbindMeshBuffer();
+    mCaches->unbindIndicesBuffer();
+    mCaches->resetVertexPointers();
+    mCaches->disableTexCoordsVertexArray();
+    debugOverdraw(false, false);
+}
+
+void RenderState::resumeFromFunctorInvoke() {
+    glViewport(0, 0, mViewportWidth, mViewportHeight);
+    glBindFramebuffer(GL_FRAMEBUFFER, mFramebuffer);
+    debugOverdraw(false, false);
+
+    glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
+
+    mCaches->scissorEnabled = glIsEnabled(GL_SCISSOR_TEST);
+    mCaches->enableScissor();
+    mCaches->resetScissor();
+
+    mCaches->activeTexture(0);
+    mCaches->resetBoundTextures();
+
+    mCaches->blend = true;
+    glEnable(GL_BLEND);
+    glBlendFunc(mCaches->lastSrcMode, mCaches->lastDstMode);
+    glBlendEquation(GL_FUNC_ADD);
+}
+
+void RenderState::debugOverdraw(bool enable, bool clear) {
+    if (mCaches->debugOverdraw && mFramebuffer == 0) {
+        if (clear) {
+            mCaches->disableScissor();
+            mCaches->stencil.clear();
+        }
+        if (enable) {
+            mCaches->stencil.enableDebugWrite();
+        } else {
+            mCaches->stencil.disable();
+        }
+    }
+}
+
+} /* namespace uirenderer */
+} /* namespace android */