81 lines
3.2 KiB
C++
81 lines
3.2 KiB
C++
#include <renderer/dx/blender.hpp>
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#include <renderer/dx/shared_context.hpp>
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namespace lt {
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dxBlender::dxBlender(Ref<dxSharedContext> sharedContext)
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: m_context(sharedContext), m_factor_map { // constants
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{ BlendFactor::ZERO, D3D11_BLEND_ZERO },
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{ BlendFactor::ONE, D3D11_BLEND_ONE },
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// source
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{ BlendFactor::SRC_COLOR, D3D11_BLEND_SRC_COLOR },
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{ BlendFactor::INVERSE_SRC_COLOR, D3D11_BLEND_INV_SRC_COLOR },
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{ BlendFactor::SRC_ALPHA, D3D11_BLEND_SRC_ALPHA },
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{ BlendFactor::INVERSE_SRC_ALPHA, D3D11_BLEND_INV_SRC_ALPHA },
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// destination
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{ BlendFactor::DST_COLOR, D3D11_BLEND_DEST_COLOR },
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{ BlendFactor::INVERSE_DST_COLOR, D3D11_BLEND_INV_DEST_COLOR },
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{ BlendFactor::DST_ALPHA, D3D11_BLEND_DEST_ALPHA },
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{ BlendFactor::INVERSE_DST_ALPHA, D3D11_BLEND_INV_DEST_ALPHA },
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// source1
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{ BlendFactor::SRC1_COLOR, D3D11_BLEND_SRC1_COLOR },
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{ BlendFactor::INVERSE_SRC1_COLOR, D3D11_BLEND_INV_SRC1_COLOR },
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{ BlendFactor::SRC1_ALPHA, D3D11_BLEND_SRC1_ALPHA },
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{ BlendFactor::INVERSE_SRC1_ALPHA, D3D11_BLEND_INV_SRC1_ALPHA }
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}
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, m_blend_state(nullptr)
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, m_desc {}
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{
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// factor map
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// blender desc
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m_desc = {};
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m_desc.RenderTarget[0].BlendEnable = true;
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m_desc.RenderTarget[0].SrcBlend = D3D11_BLEND_ZERO;
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m_desc.RenderTarget[0].DestBlend = D3D11_BLEND_ZERO;
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m_desc.RenderTarget[0].BlendOp = D3D11_BLEND_OP_ADD;
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m_desc.RenderTarget[0].SrcBlendAlpha = D3D11_BLEND_ZERO;
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m_desc.RenderTarget[0].DestBlendAlpha = D3D11_BLEND_ONE;
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m_desc.RenderTarget[0].BlendOpAlpha = D3D11_BLEND_OP_ADD;
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m_desc.RenderTarget[0].RenderTargetWriteMask = D3D11_COLOR_WRITE_ENABLE_ALL;
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// create blend state
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auto hr = HRESULT {};
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dxc(m_context->get_device()->CreateBlendState(&m_desc, &m_blend_state));
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}
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void dxBlender::enable(BlendFactor srcFactor, BlendFactor dstFactor)
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{
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// update desc
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m_desc.RenderTarget[0].BlendEnable = true;
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m_desc.RenderTarget[0].SrcBlend = m_factor_map.at(srcFactor);
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m_desc.RenderTarget[0].DestBlend = m_factor_map.at(dstFactor);
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// re-create blind state
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auto hr = HRESULT {};
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dxc(m_context->get_device()->CreateBlendState(&m_desc, &m_blend_state));
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// bind blend state
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m_context->get_device_context()->OMSetBlendState(m_blend_state.Get(), nullptr, 0x0000000f);
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}
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void dxBlender::disable()
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{
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// update desc
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m_desc.RenderTarget[0].BlendEnable = false;
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// re-create blind state
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auto hr = HRESULT {};
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dxc(m_context->get_device()->CreateBlendState(&m_desc, &m_blend_state));
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// bind blend state
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m_context->get_device_context()->OMSetBlendState(m_blend_state.Get(), nullptr, 0xffffffff);
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}
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} // namespace lt
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