108 lines
No EOL
3.3 KiB
C++
108 lines
No EOL
3.3 KiB
C++
//
|
|
//---------------------------------------------------------------------------
|
|
//
|
|
// Copyright(C) 2016 Magnus Norddahl
|
|
// All rights reserved.
|
|
//
|
|
// This program is free software: you can redistribute it and/or modify
|
|
// it under the terms of the GNU Lesser General Public License as published by
|
|
// the Free Software Foundation, either version 3 of the License, or
|
|
// (at your option) any later version.
|
|
//
|
|
// This program is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
// GNU Lesser General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Lesser General Public License
|
|
// along with this program. If not, see http://www.gnu.org/licenses/
|
|
//
|
|
//--------------------------------------------------------------------------
|
|
//
|
|
/*
|
|
** gl_tonemapshader.cpp
|
|
** Converts a HDR texture to 0-1 range by applying a tonemap operator
|
|
**
|
|
*/
|
|
|
|
#include "gl_load/gl_system.h"
|
|
#include "v_video.h"
|
|
#include "hwrenderer/utility/hw_cvars.h"
|
|
#include "gl/shaders/gl_tonemapshader.h"
|
|
|
|
void FTonemapShader::Bind()
|
|
{
|
|
auto &shader = mShader[gl_tonemap];
|
|
if (!shader)
|
|
{
|
|
shader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
|
|
shader.Compile(FShaderProgram::Fragment, "shaders/glsl/tonemap.fp", GetDefines(gl_tonemap), 330);
|
|
shader.Link("shaders/glsl/tonemap");
|
|
SceneTexture.Init(shader, "InputTexture");
|
|
ExposureTexture.Init(shader, "ExposureTexture");
|
|
PaletteLUT.Init(shader, "PaletteLUT");
|
|
}
|
|
shader.Bind();
|
|
}
|
|
|
|
bool FTonemapShader::IsPaletteMode()
|
|
{
|
|
return gl_tonemap == Palette;
|
|
}
|
|
|
|
const char *FTonemapShader::GetDefines(int mode)
|
|
{
|
|
switch (mode)
|
|
{
|
|
default:
|
|
case Linear: return "#define LINEAR\n";
|
|
case Reinhard: return "#define REINHARD\n";
|
|
case HejlDawson: return "#define HEJLDAWSON\n";
|
|
case Uncharted2: return "#define UNCHARTED2\n";
|
|
case Palette: return "#define PALETTE\n";
|
|
}
|
|
}
|
|
|
|
void FExposureExtractShader::Bind()
|
|
{
|
|
if (!mShader)
|
|
{
|
|
FString prolog = Uniforms.CreateDeclaration("Uniforms", UniformBlock::Desc());
|
|
|
|
mShader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
|
|
mShader.Compile(FShaderProgram::Fragment, "shaders/glsl/exposureextract.fp", prolog, 330);
|
|
mShader.Link("shaders/glsl/exposureextract");
|
|
mShader.SetUniformBufferLocation(Uniforms.BindingPoint(), "Uniforms");
|
|
SceneTexture.Init(mShader, "SceneTexture");
|
|
Uniforms.Init();
|
|
}
|
|
mShader.Bind();
|
|
}
|
|
|
|
void FExposureAverageShader::Bind()
|
|
{
|
|
if (!mShader)
|
|
{
|
|
mShader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 400);
|
|
mShader.Compile(FShaderProgram::Fragment, "shaders/glsl/exposureaverage.fp", "", 400);
|
|
mShader.Link("shaders/glsl/exposureaverage");
|
|
ExposureTexture.Init(mShader, "ExposureTexture");
|
|
}
|
|
mShader.Bind();
|
|
}
|
|
|
|
void FExposureCombineShader::Bind()
|
|
{
|
|
if (!mShader)
|
|
{
|
|
FString prolog = Uniforms.CreateDeclaration("Uniforms", UniformBlock::Desc());
|
|
|
|
mShader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330);
|
|
mShader.Compile(FShaderProgram::Fragment, "shaders/glsl/exposurecombine.fp", prolog, 330);
|
|
mShader.Link("shaders/glsl/exposurecombine");
|
|
mShader.SetUniformBufferLocation(Uniforms.BindingPoint(), "Uniforms");
|
|
ExposureTexture.Init(mShader, "ExposureTexture");
|
|
Uniforms.Init();
|
|
}
|
|
mShader.Bind();
|
|
} |