Method EncodePostprocessComputePass

HRM2Avatar/src/renderer/Renderer.cpp:938–963

}

void Renderer::EncodePostprocessComputePass(MTL::ComputeCommandEncoder* encoder, uint32_t viewIdx)
{
    encoder->pushDebugGroup(NS::String::string("Postprocess Pass", NS::StringEncoding::UTF8StringEncoding));
    encoder->setComputePipelineState(m_PostprocessComputePipeline->GetPipelineState());
    /*
        constant type_Constants& Constants [[buffer(0)]],
        texture2d<float, access::read> _InTexture [[texture(0)]],
        texture2d<float, access::write> _OutTexture [[texture(1)]],
    */
    uint32_t offsetBytes = 0u;
    simd::float2 texSize = m_Drawable->GetLogicalSize();
    int pixelCount = std::floor(texSize.x * texSize.y + 0.5f);
    MTL::Texture* texture = m_Drawable->GetTexture(viewIdx);
    
    Buffer* constantsBuffer = m_Graphics->AllocatePerFrameConstantsBuffer(sizeof(PostprocessConstants), offsetBytes);
    PostprocessConstants* postprocessConstants = (PostprocessConstants*)constantsBuffer->GetDataToModify(offsetBytes);
    postprocessConstants->_Params = AsFloat4((int)texSize.x, (int)texSize.y, pixelCount);
    encoder->setBuffer(constantsBuffer->GetHandle(), offsetBytes, 0);
    encoder->setTexture(texture, 0);
    encoder->setTexture(texture, 1);

    uint32_t groupCount = (pixelCount + GROUP_SIZE - 1) / GROUP_SIZE;
    encoder->dispatchThreadgroups(MTL::Size(groupCount, 1, texture->arrayLength()), MTL::Size(GROUP_SIZE, 1, 1));
    encoder->insertDebugSignpost(NS::String::string("Postprocess", NS::StringEncoding::UTF8StringEncoding));
    encoder->popDebugGroup();
}

void Renderer::EncodePostprocessRenderPass(MTL::RenderCommandEncoder* encoder, uint32_t viewIdx)
{