| // Copyright 2016 The SwiftShader Authors. All Rights Reserved. |
| // |
| // 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. |
| |
| // TransformFeedback.cpp: Implements the es2::TransformFeedback class |
| |
| #include "TransformFeedback.h" |
| |
| namespace es2 |
| { |
| |
| TransformFeedback::TransformFeedback(GLuint name) : NamedObject(name), mActive(false), mPaused(false), mVertexOffset(0) |
| { |
| } |
| |
| TransformFeedback::~TransformFeedback() |
| { |
| for(int i = 0; i < MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS; ++i) |
| { |
| mBuffer[i].set(nullptr); |
| } |
| } |
| |
| Buffer* TransformFeedback::getBuffer(GLuint index) const |
| { |
| return mBuffer[index].get(); |
| } |
| |
| GLuint TransformFeedback::getBufferName(GLuint index) const |
| { |
| return mBuffer[index].get().name(); |
| } |
| |
| int TransformFeedback::getOffset(GLuint index) const |
| { |
| return mBuffer[index].getOffset(); |
| } |
| |
| int TransformFeedback::getSize(GLuint index) const |
| { |
| return mBuffer[index].getSize(); |
| } |
| |
| void TransformFeedback::addVertexOffset(int count) |
| { |
| if(isActive() && !isPaused()) |
| { |
| mVertexOffset += count; |
| } |
| } |
| |
| int TransformFeedback::vertexOffset() const |
| { |
| return mVertexOffset; |
| } |
| |
| bool TransformFeedback::isActive() const |
| { |
| return mActive; |
| } |
| |
| bool TransformFeedback::isPaused() const |
| { |
| return mPaused; |
| } |
| |
| GLenum TransformFeedback::primitiveMode() const |
| { |
| return mPrimitiveMode; |
| } |
| |
| void TransformFeedback::begin(GLenum primitiveMode) |
| { |
| mActive = true; mPrimitiveMode = primitiveMode; |
| } |
| |
| void TransformFeedback::end() |
| { |
| mActive = false; |
| mPaused = false; |
| mVertexOffset = 0; |
| } |
| |
| void TransformFeedback::setPaused(bool paused) |
| { |
| mPaused = paused; |
| } |
| |
| void TransformFeedback::setBuffer(GLuint index, Buffer* buffer) |
| { |
| mBuffer[index].set(buffer); |
| } |
| |
| void TransformFeedback::setBuffer(GLuint index, Buffer* buffer, GLintptr offset, GLsizeiptr size) |
| { |
| mBuffer[index].set(buffer, static_cast<int>(offset), static_cast<int>(size)); |
| } |
| |
| void TransformFeedback::detachBuffer(GLuint buffer) |
| { |
| for(int i = 0; i < MAX_TRANSFORM_FEEDBACK_SEPARATE_ATTRIBS; ++i) |
| { |
| if(mBuffer[i].get().name() == buffer) |
| { |
| mBuffer[i].set(nullptr); |
| } |
| } |
| } |
| |
| } |