mirror of
https://github.com/ZDoom/gzdoom-gles.git
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5849c83028
Added gl_renderbuffers CVAR that disables render buffers Added patch shader support to FShaderProgram Added OpenGL 2 fallback support to render buffers
78 lines
3.2 KiB
C++
78 lines
3.2 KiB
C++
/*
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** gl_tonemapshader.cpp
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** Converts a HDR texture to 0-1 range by applying a tonemap operator
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**
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**---------------------------------------------------------------------------
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** Copyright 2016 Magnus Norddahl
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** All rights reserved.
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**
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** Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions
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** are met:
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**
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** 1. Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** 2. Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in the
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** documentation and/or other materials provided with the distribution.
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** 3. The name of the author may not be used to endorse or promote products
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** derived from this software without specific prior written permission.
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** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be
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** covered by the terms of the GNU Lesser General Public License as published
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** by the Free Software Foundation; either version 2.1 of the License, or (at
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** your option) any later version.
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** 5. Full disclosure of the entire project's source code, except for third
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** party libraries is mandatory. (NOTE: This clause is non-negotiable!)
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**
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** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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**---------------------------------------------------------------------------
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**
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*/
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#include "gl/system/gl_system.h"
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#include "files.h"
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#include "m_swap.h"
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#include "v_video.h"
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#include "gl/gl_functions.h"
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#include "vectors.h"
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#include "gl/system/gl_interface.h"
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#include "gl/system/gl_framebuffer.h"
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#include "gl/system/gl_cvars.h"
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#include "gl/shaders/gl_tonemapshader.h"
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void FTonemapShader::Bind()
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{
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auto &shader = mShader[gl_tonemap];
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if (!shader)
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{
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shader.Compile(FShaderProgram::Vertex, "shaders/glsl/tonemap.vp", "", 330);
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shader.Compile(FShaderProgram::Fragment, "shaders/glsl/tonemap.fp", GetDefines(gl_tonemap), 330);
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shader.SetFragDataLocation(0, "FragColor");
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shader.Link("shaders/glsl/tonemap");
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shader.SetAttribLocation(0, "PositionInProjection");
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SceneTexture.Init(shader, "InputTexture");
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Exposure.Init(shader, "ExposureAdjustment");
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}
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shader.Bind();
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}
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const char *FTonemapShader::GetDefines(int mode)
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{
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switch (mode)
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{
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default:
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case Linear: return "#define LINEAR\n";
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case Reinhard: return "#define REINHARD\n";
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case HejlDawson: return "#define HEJLDAWSON\n";
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case Uncharted2: return "#define UNCHARTED2\n";
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}
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}
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