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added r_lightmapGreyscale

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thanks to Jakub 'kubaxvx' Matraszek for his contribution
This commit is contained in:
myT 2020-01-12 22:52:02 +01:00
parent e91f6e1c08
commit 01ce4063b5
4 changed files with 17 additions and 3 deletions
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6
changelog.txt
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@ -79,7 +79,11 @@ add: r_rtColorFormat <0|1|2> (default: 0) selects the color format for render ta
r_rtColorFormat 0 = R8G8B8A8
r_rtColorFormat 1 = R10G10B10A2
r_rtColorFormat 2 = R16G16B16A16
add: r_lightmapGreyscale <0.0 to 1.0> (default: 0) to control how monochromatic the lightmaps look
r_lightmapGreyscale 0 = full color (nothing done)
r_lightmapGreyscale 1 = completely monochrome
add: r_mapBrightness now works on q3map2's external lightmap atlas images
add: the renderer can now batch surfaces with different (but sufficiently similar) shaders

11
code/renderer/tr_bsp.cpp
View file

@ -41,13 +41,20 @@ static int lightmapsPerAtlas;
static void R_ColorShiftLightingBytesRGB( const byte* in, byte* out )
{
const int scale16 = (int)( r_mapBrightness->value * 65536.0f );
// scale based on brightness
const int scale16 = (int)( r_mapBrightness->value * 65536.0f );
int r = ( (int)in[0] * scale16 ) >> 16;
int g = ( (int)in[1] * scale16 ) >> 16;
int b = ( (int)in[2] * scale16 ) >> 16;
// desaturate by moving the channels towards the grey "midpoint"
// credit for the following snippet goes to Jakub 'kubaxvx' Matraszek
const int grey = (r + g + b) / 3; // could use the Rec. 601 or 709 coefficients instead
const int greyscale16 = (int)( r_lightmapGreyscale->value * 65536.0f );
r = ( ( r << 16 ) + greyscale16 * ( grey - r ) ) >> 16;
g = ( ( g << 16 ) + greyscale16 * ( grey - g ) ) >> 16;
b = ( ( b << 16 ) + greyscale16 * ( grey - b ) ) >> 16;
// normalize by color instead of saturating to white
if ( ( r | g | b ) > 255 ) {
int max;

2
code/renderer/tr_init.cpp
View file

@ -60,6 +60,7 @@ cvar_t *r_drawworld;
cvar_t *r_speeds;
cvar_t *r_fullbright;
cvar_t *r_lightmap;
cvar_t *r_lightmapGreyscale;
cvar_t *r_novis;
cvar_t *r_nocull;
cvar_t *r_nocurves;
@ -389,6 +390,7 @@ static const cvarTableItem_t r_cvars[] =
{ &r_subdivisions, "r_subdivisions", "1", CVAR_ARCHIVE | CVAR_LATCH, CVART_FLOAT, "1", "64", help_r_subdivisions },
{ &r_fullbright, "r_fullbright", "0", CVAR_ARCHIVE | CVAR_LATCH, CVART_BOOL, NULL, NULL, help_r_fullbright },
{ &r_lightmap, "r_lightmap", "0", CVAR_ARCHIVE | CVAR_LATCH, CVART_BOOL, NULL, NULL, help_r_lightmap },
{ &r_lightmapGreyscale, "r_lightmapGreyscale", "0", CVAR_ARCHIVE | CVAR_LATCH, CVART_FLOAT, "0", "1", "how monochrome the lightmap looks" },
{ &r_softSprites, "r_softSprites", "1", CVAR_ARCHIVE | CVAR_LATCH, CVART_BOOL, NULL, NULL, help_r_softSprites },
{ &r_gpuMipGen, "r_gpuMipGen", "1", CVAR_ARCHIVE | CVAR_LATCH, CVART_BOOL, NULL, NULL, help_r_gpuMipGen },
{ &r_alphaToCoverage, "r_alphaToCoverage", "1", CVAR_ARCHIVE | CVAR_LATCH, CVART_BOOL, NULL, NULL, help_r_alphaToCoverage },

1
code/renderer/tr_local.h
View file

@ -982,6 +982,7 @@ extern cvar_t *r_gamma;
extern cvar_t *r_greyscale;
extern cvar_t *r_noiseScale; // the strength of the dithering noise
extern cvar_t *r_lightmap; // render lightmaps only
extern cvar_t *r_lightmapGreyscale; // how monochrome the lightmap looks
extern cvar_t *r_fullbright; // avoid lightmap pass
extern cvar_t *r_softSprites; // draws certain surfaces as depth particles
extern cvar_t *r_gpuMipGen; // uses GPU-side mip-map generation