OrdinaryMagician/vkdoom_m
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Add Palette LUT tonemap mode

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This commit is contained in:
Magnus Norddahl 2016-08-23 09:18:18 +02:00
commit 25645d901e
10 changed files with 102 additions and 7 deletions
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53
src/gl/renderer/gl_postprocess.cpp
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@ -55,6 +55,7 @@
#include "r_utility.h"
#include "a_hexenglobal.h"
#include "p_local.h"
#include "colormatcher.h"
#include "gl/gl_functions.h"
#include "gl/system/gl_interface.h"
#include "gl/system/gl_framebuffer.h"
@ -89,7 +90,7 @@ CVAR(Float, gl_exposure, 0.0f, 0)
CUSTOM_CVAR(Int, gl_tonemap, 0, CVAR_ARCHIVE|CVAR_GLOBALCONFIG)
{
if (self < 0 || self > 4)
if (self < 0 || self > 5)
self = 0;
}
@ -222,13 +223,61 @@ void FGLRenderer::TonemapScene()
mBuffers->BindCurrentTexture(0);
mTonemapShader->Bind();
mTonemapShader->SceneTexture.Set(0);
mTonemapShader->Exposure.Set(mCameraExposure);
if (mTonemapShader->IsPaletteMode())
{
mTonemapShader->PaletteLUT.Set(1);
BindTonemapPalette(1);
}
else
{
mTonemapShader->Exposure.Set(mCameraExposure);
}
RenderScreenQuad();
mBuffers->NextTexture();
FGLDebug::PopGroup();
}
void FGLRenderer::BindTonemapPalette(int texunit)
{
if (mTonemapPalette)
{
mTonemapPalette->Bind(texunit, 0, false);
}
else
{
TArray<unsigned char> lut;
lut.Resize(512 * 512 * 4);
for (int r = 0; r < 64; r++)
{
for (int g = 0; g < 64; g++)
{
for (int b = 0; b < 64; b++)
{
PalEntry color = GPalette.BaseColors[ColorMatcher.Pick((r << 2) | (r >> 1), (g << 2) | (g >> 1), (b << 2) | (b >> 1))];
int index = ((r * 64 + g) * 64 + b) * 4;
lut[index] = color.r;
lut[index + 1] = color.g;
lut[index + 2] = color.b;
lut[index + 3] = 255;
}
}
}
mTonemapPalette = new FHardwareTexture(512, 512, true);
mTonemapPalette->CreateTexture(&lut[0], 512, 512, texunit, false, 0, "mTonemapPalette");
glActiveTexture(GL_TEXTURE0 + texunit);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
glActiveTexture(GL_TEXTURE0);
}
}
//-----------------------------------------------------------------------------
//
// Apply lens distortion and place the result in the HUD/2D texture