/* ** gl_bloomshader.cpp ** Shaders used for screen space ambient occlusion ** **--------------------------------------------------------------------------- ** Copyright 2016 Magnus Norddahl ** All rights reserved. ** ** Redistribution and use in source and binary forms, with or without ** modification, are permitted provided that the following conditions ** are met: ** ** 1. Redistributions of source code must retain the above copyright ** notice, this list of conditions and the following disclaimer. ** 2. Redistributions in binary form must reproduce the above copyright ** notice, this list of conditions and the following disclaimer in the ** documentation and/or other materials provided with the distribution. ** 3. The name of the author may not be used to endorse or promote products ** derived from this software without specific prior written permission. ** 4. When not used as part of GZDoom or a GZDoom derivative, this code will be ** covered by the terms of the GNU Lesser General Public License as published ** by the Free Software Foundation; either version 2.1 of the License, or (at ** your option) any later version. ** 5. Full disclosure of the entire project's source code, except for third ** party libraries is mandatory. (NOTE: This clause is non-negotiable!) ** ** THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR ** IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES ** OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. ** IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, ** INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT ** NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, ** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY ** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT ** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF ** THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. **--------------------------------------------------------------------------- ** */ #include "gl/system/gl_system.h" #include "files.h" #include "m_swap.h" #include "v_video.h" #include "gl/gl_functions.h" #include "vectors.h" #include "gl/system/gl_interface.h" #include "gl/system/gl_framebuffer.h" #include "gl/system/gl_cvars.h" #include "gl/shaders/gl_ambientshader.h" void FLinearDepthShader::Bind() { if (!mShader) { mShader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330); mShader.Compile(FShaderProgram::Fragment, "shaders/glsl/lineardepth.fp", "", 330); mShader.SetFragDataLocation(0, "FragColor"); mShader.Link("shaders/glsl/lineardepth"); mShader.SetAttribLocation(0, "PositionInProjection"); DepthTexture.Init(mShader, "DepthTexture"); LinearizeDepthA.Init(mShader, "LinearizeDepthA"); LinearizeDepthB.Init(mShader, "LinearizeDepthB"); InverseDepthRangeA.Init(mShader, "InverseDepthRangeA"); InverseDepthRangeB.Init(mShader, "InverseDepthRangeB"); } mShader.Bind(); } void FSSAOShader::Bind() { if (!mShader) { const char *defines = R"( #define USE_RANDOM_TEXTURE #define RANDOM_TEXTURE_WIDTH 4.0 #define NUM_DIRECTIONS 8.0 #define NUM_STEPS 4.0 )"; mShader.Compile(FShaderProgram::Vertex, "shaders/glsl/screenquad.vp", "", 330); mShader.Compile(FShaderProgram::Fragment, "shaders/glsl/ssao.fp", defines, 330); mShader.SetFragDataLocation(0, "FragColor"); mShader.Link("shaders/glsl/ssao"); mShader.SetAttribLocation(0, "PositionInProjection"); DepthTexture.Init(mShader, "DepthTexture"); RandomTexture.Init(mShader, "RandomTexture"); UVToViewA.Init(mShader, "UVToViewA"); UVToViewB.Init(mShader, "UVToViewB"); InvFullResolution.Init(mShader, "InvFullResolution"); NDotVBias.Init(mShader, "NDotVBias"); NegInvR2.Init(mShader, "NegInvR2"); RadiusToScreen.Init(mShader, "RadiusToScreen"); AOMultiplier.Init(mShader, "AOMultiplier"); AOStrength.Init(mShader, "AOStrength"); } mShader.Bind(); }