kc3-lang/angle/src/libANGLE/renderer/vulkan/BufferVk.cpp

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• Hash : b8353b01
  Author :
  Date : 2017-01-25T12:57:21
  

  Vulkan: Simple buffer creation.
  
  This is necessary to initialize vertex arrays.
  
  BUG=angleproject:1579
  
  Change-Id: Ic5a232d5cdfaa75b41241901de842e62ff3b173f
  Reviewed-on: https://chromium-review.googlesource.com/406645
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  

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• src/libANGLE/renderer/vulkan/BufferVk.cpp

• //
  // 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.
  //
  // BufferVk.cpp:
  //    Implements the class methods for BufferVk.
  //
  
  #include "libANGLE/renderer/vulkan/BufferVk.h"
  
  #include "common/debug.h"
  #include "libANGLE/renderer/vulkan/ContextVk.h"
  #include "libANGLE/renderer/vulkan/RendererVk.h"
  
  namespace rx
  {
  
  BufferVk::BufferVk(const gl::BufferState &state) : BufferImpl(state), mRequiredSize(0)
  {
  }
  
  BufferVk::~BufferVk()
  {
  }
  
  gl::Error BufferVk::setData(ContextImpl *context,
                              GLenum target,
                              const void *data,
                              size_t size,
                              GLenum usage)
  {
      ContextVk *contextVk = GetAs<ContextVk>(context);
      auto device          = contextVk->getDevice();
  
      // TODO(jmadill): Proper usage bit implementation. Likely will involve multiple backing buffers
      // like in D3D11.
      VkBufferCreateInfo createInfo;
      createInfo.sType                 = VK_STRUCTURE_TYPE_BUFFER_CREATE_INFO;
      createInfo.pNext                 = nullptr;
      createInfo.flags                 = 0;
      createInfo.size                  = size;
      createInfo.usage                 = VK_BUFFER_USAGE_VERTEX_BUFFER_BIT;
      createInfo.sharingMode           = VK_SHARING_MODE_EXCLUSIVE;
      createInfo.queueFamilyIndexCount = 0;
      createInfo.pQueueFamilyIndices   = nullptr;
  
      vk::Buffer newBuffer(device);
      ANGLE_TRY(newBuffer.init(createInfo));
  
      // Find a compatible memory pool index. If the index doesn't change, we could cache it.
      // Not finding a valid memory pool means an out-of-spec driver, or internal error.
      // TODO(jmadill): More efficient memory allocation.
      VkMemoryRequirements memoryRequirements;
      vkGetBufferMemoryRequirements(device, newBuffer.getHandle(), &memoryRequirements);
  
      // The requirements size is not always equal to the specified API size.
      ASSERT(memoryRequirements.size >= size);
      mRequiredSize = static_cast<size_t>(memoryRequirements.size);
  
      VkPhysicalDeviceMemoryProperties memoryProperties;
      vkGetPhysicalDeviceMemoryProperties(contextVk->getRenderer()->getPhysicalDevice(),
                                          &memoryProperties);
  
      auto memoryTypeIndex =
          FindMemoryType(memoryProperties, memoryRequirements,
                         VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
      ANGLE_VK_CHECK(memoryTypeIndex.valid(), VK_ERROR_INCOMPATIBLE_DRIVER);
  
      VkMemoryAllocateInfo allocInfo;
      allocInfo.sType           = VK_STRUCTURE_TYPE_MEMORY_ALLOCATE_INFO;
      allocInfo.pNext           = nullptr;
      allocInfo.memoryTypeIndex = memoryTypeIndex.value();
      allocInfo.allocationSize  = memoryRequirements.size;
  
      ANGLE_TRY(newBuffer.getMemory().allocate(allocInfo));
      ANGLE_TRY(newBuffer.bindMemory());
  
      mBuffer = std::move(newBuffer);
  
      if (data)
      {
          ANGLE_TRY(setDataImpl(static_cast<const uint8_t *>(data), size, 0));
      }
  
      return gl::NoError();
  }
  
  gl::Error BufferVk::setSubData(ContextImpl *context,
                                 GLenum target,
                                 const void *data,
                                 size_t size,
                                 size_t offset)
  {
      ASSERT(mBuffer.getHandle() != VK_NULL_HANDLE);
      ASSERT(mBuffer.getMemory().getHandle() != VK_NULL_HANDLE);
  
      ANGLE_TRY(setDataImpl(static_cast<const uint8_t *>(data), size, offset));
  
      return gl::NoError();
  }
  
  gl::Error BufferVk::copySubData(BufferImpl *source,
                                  GLintptr sourceOffset,
                                  GLintptr destOffset,
                                  GLsizeiptr size)
  {
      UNIMPLEMENTED();
      return gl::Error(GL_INVALID_OPERATION);
  }
  
  gl::Error BufferVk::map(GLenum access, GLvoid **mapPtr)
  {
      ASSERT(mBuffer.getHandle() != VK_NULL_HANDLE);
      ASSERT(mBuffer.getMemory().getHandle() != VK_NULL_HANDLE);
  
      ANGLE_TRY(
          mBuffer.getMemory().map(0, mState.getSize(), 0, reinterpret_cast<uint8_t **>(mapPtr)));
  
      return gl::NoError();
  }
  
  gl::Error BufferVk::mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr)
  {
      ASSERT(mBuffer.getHandle() != VK_NULL_HANDLE);
      ASSERT(mBuffer.getMemory().getHandle() != VK_NULL_HANDLE);
  
      ANGLE_TRY(mBuffer.getMemory().map(offset, length, 0, reinterpret_cast<uint8_t **>(mapPtr)));
  
      return gl::NoError();
  }
  
  gl::Error BufferVk::unmap(GLboolean *result)
  {
      ASSERT(mBuffer.getHandle() != VK_NULL_HANDLE);
      ASSERT(mBuffer.getMemory().getHandle() != VK_NULL_HANDLE);
  
      mBuffer.getMemory().unmap();
  
      return gl::NoError();
  }
  
  gl::Error BufferVk::getIndexRange(GLenum type,
                                    size_t offset,
                                    size_t count,
                                    bool primitiveRestartEnabled,
                                    gl::IndexRange *outRange)
  {
      UNIMPLEMENTED();
      return gl::Error(GL_INVALID_OPERATION);
  }
  
  vk::Error BufferVk::setDataImpl(const uint8_t *data, size_t size, size_t offset)
  {
      uint8_t *mapPointer = nullptr;
      ANGLE_TRY(mBuffer.getMemory().map(offset, size, 0, &mapPointer));
      ASSERT(mapPointer);
  
      memcpy(mapPointer, data, size);
  
      mBuffer.getMemory().unmap();
  
      return vk::NoError();
  }
  
  }  // namespace rx
  

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