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https://bitbucket.org/CPMADevs/cnq3
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130 lines
3.7 KiB
C++
130 lines
3.7 KiB
C++
/*
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===========================================================================
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Copyright (C) 2023-2024 Gian 'myT' Schellenbaum
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This file is part of Challenge Quake 3 (CNQ3).
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Challenge Quake 3 is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Challenge Quake 3 is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Challenge Quake 3. If not, see <https://www.gnu.org/licenses/>.
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===========================================================================
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*/
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// Cinematic Rendering Pipeline - tone mapping
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#include "crp_local.h"
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#include "compshaders/crp/fullscreen.h"
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#include "compshaders/crp/tone_map.h"
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#include "compshaders/crp/tone_map_inverse.h"
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#pragma pack(push, 4)
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struct ToneMapRC
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{
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uint32_t textureIndex;
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uint32_t samplerIndex;
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float invGamma;
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float brightness;
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float greyscale;
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};
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struct InverseToneMapRC
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{
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uint32_t textureIndex;
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uint32_t samplerIndex;
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float gamma;
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float invBrightness;
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};
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#pragma pack(pop)
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void ToneMap::Init()
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{
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{
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GraphicsPipelineDesc desc("Tone Map");
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desc.shortLifeTime = true;
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desc.vertexShader = ShaderByteCode(g_fullscreen_vs);
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desc.pixelShader = ShaderByteCode(g_tone_map_ps);
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desc.depthStencil.DisableDepth();
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desc.rasterizer.cullMode = CT_TWO_SIDED;
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desc.AddRenderTarget(0, crp.renderTargetFormat);
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pipeline = CreateGraphicsPipeline(desc);
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}
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{
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GraphicsPipelineDesc desc("Inverse Tone Map");
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desc.shortLifeTime = true;
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desc.vertexShader = ShaderByteCode(g_fullscreen_vs);
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desc.pixelShader = ShaderByteCode(g_tone_map_inverse_ps);
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desc.depthStencil.DisableDepth();
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desc.rasterizer.cullMode = CT_TWO_SIDED;
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desc.AddRenderTarget(0, crp.renderTargetFormat);
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pipeline = CreateGraphicsPipeline(desc);
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}
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}
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void ToneMap::DrawToneMap()
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{
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srp.renderMode = RenderMode::None;
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SCOPED_RENDER_PASS("Tone Map", 1.0f, 1.0f, 1.0f);
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CmdSetViewportAndScissor(0, 0, glConfig.vidWidth, glConfig.vidHeight);
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crp.SwapRenderTargets();
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CmdBeginBarrier();
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CmdTextureBarrier(crp.GetReadRenderTarget(), ResourceStates::PixelShaderAccessBit);
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CmdTextureBarrier(crp.GetWriteRenderTarget(), ResourceStates::RenderTargetBit);
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CmdEndBarrier();
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ToneMapRC rc = {};
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rc.textureIndex = GetTextureIndexSRV(crp.GetReadRenderTarget());
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rc.samplerIndex = GetSamplerIndex(TW_CLAMP_TO_EDGE, TextureFilter::Linear);
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rc.invGamma = 1.0f / r_gamma->value;
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rc.brightness = r_brightness->value;
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rc.greyscale = r_greyscale->value;
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CmdBindRenderTargets(1, &crp.renderTarget, NULL);
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CmdBindPipeline(pipeline);
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CmdSetGraphicsRootConstants(0, sizeof(rc), &rc);
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CmdDraw(3, 0);
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}
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void ToneMap::DrawInverseToneMap()
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{
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srp.renderMode = RenderMode::None;
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SCOPED_RENDER_PASS("Inverse Tone Map", 1.0f, 1.0f, 1.0f);
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CmdSetViewportAndScissor(0, 0, glConfig.vidWidth, glConfig.vidHeight);
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crp.SwapRenderTargets();
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CmdBeginBarrier();
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CmdTextureBarrier(crp.GetReadRenderTarget(), ResourceStates::PixelShaderAccessBit);
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CmdTextureBarrier(crp.GetWriteRenderTarget(), ResourceStates::RenderTargetBit);
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CmdEndBarrier();
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InverseToneMapRC rc = {};
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rc.textureIndex = GetTextureIndexSRV(crp.GetReadRenderTarget());
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rc.samplerIndex = GetSamplerIndex(TW_CLAMP_TO_EDGE, TextureFilter::Linear);
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rc.gamma = r_gamma->value;
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rc.invBrightness = 1.0f / r_brightness->value;
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CmdBindRenderTargets(1, &crp.renderTarget, NULL);
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CmdBindPipeline(inversePipeline);
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CmdSetGraphicsRootConstants(0, sizeof(rc), &rc);
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CmdDraw(3, 0);
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}
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