| // |
| // Copyright 2016 The ANGLE Project Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| // |
| // TransformFeedbackVk.h: |
| // Defines the class interface for TransformFeedbackVk, implementing TransformFeedbackImpl. |
| // |
| |
| #ifndef LIBANGLE_RENDERER_VULKAN_TRANSFORMFEEDBACKVK_H_ |
| #define LIBANGLE_RENDERER_VULKAN_TRANSFORMFEEDBACKVK_H_ |
| |
| #include "libANGLE/renderer/TransformFeedbackImpl.h" |
| |
| #include "libANGLE/renderer/glslang_wrapper_utils.h" |
| #include "libANGLE/renderer/vulkan/vk_helpers.h" |
| |
| namespace gl |
| { |
| class ProgramState; |
| } // namespace gl |
| |
| namespace rx |
| { |
| class UpdateDescriptorSetsBuilder; |
| |
| namespace vk |
| { |
| class DescriptorSetLayoutDesc; |
| } // namespace vk |
| |
| class TransformFeedbackVk : public TransformFeedbackImpl, public angle::ObserverInterface |
| { |
| public: |
| TransformFeedbackVk(const gl::TransformFeedbackState &state); |
| ~TransformFeedbackVk() override; |
| void onDestroy(const gl::Context *context) override; |
| |
| angle::Result begin(const gl::Context *context, gl::PrimitiveMode primitiveMode) override; |
| angle::Result end(const gl::Context *context) override; |
| angle::Result pause(const gl::Context *context) override; |
| angle::Result resume(const gl::Context *context) override; |
| |
| angle::Result bindIndexedBuffer(const gl::Context *context, |
| size_t index, |
| const gl::OffsetBindingPointer<gl::Buffer> &binding) override; |
| |
| void updateDescriptorSetLayout(ContextVk *contextVk, |
| const ShaderInterfaceVariableInfoMap &variableInfoMap, |
| size_t xfbBufferCount, |
| vk::DescriptorSetLayoutDesc *descSetLayoutOut) const; |
| void getBufferOffsets(ContextVk *contextVk, |
| GLint drawCallFirstVertex, |
| int32_t *offsetsOut, |
| size_t offsetsSize) const; |
| |
| bool getAndResetBufferRebindState() |
| { |
| bool retVal = mRebindTransformFeedbackBuffer; |
| mRebindTransformFeedbackBuffer = false; |
| return retVal; |
| } |
| |
| const gl::TransformFeedbackBuffersArray<vk::BufferHelper *> &getBufferHelpers() const |
| { |
| return mBufferHelpers; |
| } |
| |
| const gl::TransformFeedbackBuffersArray<VkBuffer> &getBufferHandles() const |
| { |
| return mBufferHandles; |
| } |
| |
| const gl::TransformFeedbackBuffersArray<VkDeviceSize> &getBufferOffsets() const |
| { |
| return mBufferOffsets; |
| } |
| |
| const gl::TransformFeedbackBuffersArray<VkDeviceSize> &getBufferSizes() const |
| { |
| return mBufferSizes; |
| } |
| |
| gl::TransformFeedbackBuffersArray<vk::BufferHelper> &getCounterBufferHelpers() |
| { |
| return mCounterBufferHelpers; |
| } |
| |
| const gl::TransformFeedbackBuffersArray<VkBuffer> &getCounterBufferHandles() const |
| { |
| return mCounterBufferHandles; |
| } |
| |
| void updateTransformFeedbackDescriptorDesc( |
| const vk::Context *context, |
| const gl::ProgramExecutable &executable, |
| const ShaderInterfaceVariableInfoMap &variableInfoMap, |
| const vk::BufferHelper &emptyBuffer, |
| bool activeUnpaused, |
| vk::DescriptorSetDescBuilder *builder) const; |
| |
| const gl::TransformFeedbackBuffersArray<VkDeviceSize> &getCounterBufferOffsets() const |
| { |
| return mCounterBufferOffsets; |
| } |
| |
| void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override; |
| |
| private: |
| void writeDescriptorSet(vk::Context *context, |
| UpdateDescriptorSetsBuilder *updateBuilder, |
| const ShaderInterfaceVariableInfoMap &variableInfoMap, |
| size_t xfbBufferCount, |
| VkDescriptorBufferInfo *bufferInfo, |
| VkDescriptorSet descSet) const; |
| |
| void initializeXFBVariables(ContextVk *contextVk, uint32_t xfbBufferCount); |
| |
| void releaseCounterBuffers(RendererVk *renderer); |
| |
| // This member variable is set when glBindTransformFeedbackBuffers/glBeginTransformFeedback |
| // is called and unset in dirty bit handler for transform feedback state change. If this |
| // value is true, vertex shader will record transform feedback varyings from the beginning |
| // of the buffer. |
| bool mRebindTransformFeedbackBuffer; |
| |
| gl::TransformFeedbackBuffersArray<vk::BufferHelper *> mBufferHelpers; |
| gl::TransformFeedbackBuffersArray<VkBuffer> mBufferHandles; |
| gl::TransformFeedbackBuffersArray<VkDeviceSize> mBufferOffsets; |
| gl::TransformFeedbackBuffersArray<VkDeviceSize> mBufferSizes; |
| |
| // Counter buffer used for pause and resume. |
| gl::TransformFeedbackBuffersArray<vk::BufferHelper> mCounterBufferHelpers; |
| gl::TransformFeedbackBuffersArray<VkBuffer> mCounterBufferHandles; |
| gl::TransformFeedbackBuffersArray<VkDeviceSize> mCounterBufferOffsets; |
| |
| // Buffer binding points |
| std::vector<angle::ObserverBinding> mBufferObserverBindings; |
| }; |
| |
| } // namespace rx |
| |
| #endif // LIBANGLE_RENDERER_VULKAN_TRANSFORMFEEDBACKVK_H_ |