mirror of
https://github.com/ZDoom/raze-gles.git
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148 lines
4 KiB
C++
148 lines
4 KiB
C++
/*
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** Vulkan backend
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** Copyright (c) 2016-2020 Magnus Norddahl
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**
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** This software is provided 'as-is', without any express or implied
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** warranty. In no event will the authors be held liable for any damages
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** arising from the use of this software.
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**
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** Permission is granted to anyone to use this software for any purpose,
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** including commercial applications, and to alter it and redistribute it
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** freely, subject to the following restrictions:
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**
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** 1. The origin of this software must not be misrepresented; you must not
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** claim that you wrote the original software. If you use this software
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** in a product, an acknowledgment in the product documentation would be
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** appreciated but is not required.
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** 2. Altered source versions must be plainly marked as such, and must not be
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** misrepresented as being the original software.
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** 3. This notice may not be removed or altered from any source distribution.
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**
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*/
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#include "vk_renderstate.h"
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#include "vulkan/system/vk_framebuffer.h"
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#include "vulkan/system/vk_builders.h"
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#include "vulkan/renderer/vk_streambuffer.h"
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VkStreamBuffer::VkStreamBuffer(size_t structSize, size_t count)
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{
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mBlockSize = static_cast<uint32_t>((structSize + screen->uniformblockalignment - 1) / screen->uniformblockalignment * screen->uniformblockalignment);
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UniformBuffer = (VKDataBuffer*)GetVulkanFrameBuffer()->CreateDataBuffer(-1, false, false);
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UniformBuffer->SetData(mBlockSize * count, nullptr, false);
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}
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VkStreamBuffer::~VkStreamBuffer()
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{
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delete UniformBuffer;
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}
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uint32_t VkStreamBuffer::NextStreamDataBlock()
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{
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mStreamDataOffset += mBlockSize;
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if (mStreamDataOffset + (size_t)mBlockSize >= UniformBuffer->Size())
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{
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mStreamDataOffset = 0;
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return 0xffffffff;
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}
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return mStreamDataOffset;
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}
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/////////////////////////////////////////////////////////////////////////////
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VkStreamBufferWriter::VkStreamBufferWriter()
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{
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mBuffer = GetVulkanFrameBuffer()->StreamBuffer;
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}
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bool VkStreamBufferWriter::Write(const StreamData& data)
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{
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mDataIndex++;
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if (mDataIndex == MAX_STREAM_DATA)
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{
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mDataIndex = 0;
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mStreamDataOffset = mBuffer->NextStreamDataBlock();
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if (mStreamDataOffset == 0xffffffff)
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return false;
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}
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uint8_t* ptr = (uint8_t*)mBuffer->UniformBuffer->Memory();
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memcpy(ptr + mStreamDataOffset + sizeof(StreamData) * mDataIndex, &data, sizeof(StreamData));
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return true;
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}
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void VkStreamBufferWriter::Reset()
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{
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mDataIndex = MAX_STREAM_DATA - 1;
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mStreamDataOffset = 0;
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mBuffer->Reset();
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}
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/////////////////////////////////////////////////////////////////////////////
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VkMatrixBufferWriter::VkMatrixBufferWriter()
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{
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mBuffer = GetVulkanFrameBuffer()->MatrixBuffer;
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mIdentityMatrix.loadIdentity();
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}
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template<typename T>
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static void BufferedSet(bool& modified, T& dst, const T& src)
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{
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if (dst == src)
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return;
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dst = src;
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modified = true;
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}
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static void BufferedSet(bool& modified, VSMatrix& dst, const VSMatrix& src)
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{
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if (memcmp(dst.get(), src.get(), sizeof(FLOATTYPE) * 16) == 0)
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return;
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dst = src;
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modified = true;
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}
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bool VkMatrixBufferWriter::Write(const VSMatrix& modelMatrix, bool modelMatrixEnabled, const VSMatrix& textureMatrix, bool textureMatrixEnabled)
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{
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bool modified = (mOffset == 0); // always modified first call
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if (modelMatrixEnabled)
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{
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BufferedSet(modified, mMatrices.ModelMatrix, modelMatrix);
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if (modified)
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mMatrices.NormalModelMatrix.computeNormalMatrix(modelMatrix);
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}
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else
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{
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BufferedSet(modified, mMatrices.ModelMatrix, mIdentityMatrix);
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BufferedSet(modified, mMatrices.NormalModelMatrix, mIdentityMatrix);
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}
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if (textureMatrixEnabled)
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{
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BufferedSet(modified, mMatrices.TextureMatrix, textureMatrix);
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}
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else
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{
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BufferedSet(modified, mMatrices.TextureMatrix, mIdentityMatrix);
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}
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if (modified)
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{
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mOffset = mBuffer->NextStreamDataBlock();
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if (mOffset == 0xffffffff)
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return false;
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uint8_t* ptr = (uint8_t*)mBuffer->UniformBuffer->Memory();
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memcpy(ptr + mOffset, &mMatrices, sizeof(MatricesUBO));
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}
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return true;
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}
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void VkMatrixBufferWriter::Reset()
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{
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mOffset = 0;
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mBuffer->Reset();
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}
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