GPGPUQuadRenderer.cpp

#include "GPGPUQuadRenderer.h"
 
#include "Rendering/IBuffers.h"
#include "Rendering/IGraphicsDevice.h"
#include "Rendering/IRenderTargets.h"
#include "Rendering/ITextures.h"
 
void Cogs::GPGPUQuadRenderer::initialize(IGraphicsDevice* device)
{
  // Geometry
  float vertexData[] = {
    -1, -1, 0, 0,
    1, -1, 1, 0,
    1, 1, 1, 1,
 
    -1, -1, 0, 0,
    1, 1, 1, 1,
    -1, 1, 0, 1,
  };
 
  VertexElement elements[] = {
    { 0, DataFormat::X32Y32_FLOAT, ElementSemantic::Position, 0, InputType::VertexData, 0 },
    { 2 * sizeof(float), DataFormat::X32Y32_FLOAT, ElementSemantic::TextureCoordinate, 0, InputType::VertexData, 0 }
  };
  format = device->getBuffers()->createVertexFormat(elements, 2);
  quadVertexBuffer = device->getBuffers()->loadVertexBuffer(vertexData, 6, format);
 
  DepthStencilState depthStencilState = {false, false, DepthStencilState::Less };
  solidDepthStencilState = device->getRenderTargets()->loadDepthStencilState(depthStencilState);
 
  solidBlendState = device->getRenderTargets()->loadBlendState(BlendState::DefaultState());
 
  RasterizerState solid = { false, RasterizerState::CullMode::Back, true, true, 0.0f, 0.0f, 0.0f, false, false };
  solidRasterizerState = device->getRenderTargets()->loadRasterizerState(solid);
 
  pointSampleState = device->getTextures()->loadSamplerState({ SamplerState::Wrap,
                                                             SamplerState::Wrap,
                                                             SamplerState::Wrap,
                                                             SamplerState::MinMagMipPoint,
                                                             SamplerState::Never,
                                                             0,
                                                             { 0, 0, 0, 1 } });
 
}
 
void Cogs::GPGPUQuadRenderer::bind(IContext* context)
{
  const uint32_t strides[] = { 4 * sizeof(float) };
  context->setVertexBuffers(&quadVertexBuffer, 1, strides, nullptr);
  context->setBlendState(solidBlendState);
  context->setDepthStencilState(solidDepthStencilState);
  context->setRasterizerState(solidRasterizerState);
}