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