Serious-Engine/Sources/Shaders/ReftectionAndSpecular.cpp
2016-03-11 18:20:51 -06:00

93 lines
2.8 KiB
C++

/* Copyright (c) 2002-2012 Croteam Ltd.
This program is free software; you can redistribute it and/or modify
it under the terms of version 2 of the GNU General Public License as published by
the Free Software Foundation
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 General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. */
#include "StdH.h"
#include <Engine/Ska/Render.h>
#include <Shaders/Common.h>
#define TEXTURE_COUNT 3
#define UVMAPS_COUNT 1
#define COLOR_COUNT 3
#define FLOAT_COUNT 0
#define FLAGS_COUNT 2
#define BASE_TEXTURE 0
#define BASE_UVMAP 0
#define BASE_COLOR 0
#define BASE_FLOAT 0
#define REFLECTION_TEXTURE 1
#define REFLECTION_COLOR 1
#define SPECULAR_TEXTURE 2
#define SPECULAR_COLOR 2
SHADER_MAIN(ReflectionAndSpecular)
{
shaSetTexture(BASE_TEXTURE);
shaSetTextureWrapping( GFX_REPEAT, GFX_REPEAT);
shaSetUVMap(BASE_UVMAP);
shaSetColor(BASE_COLOR);
shaEnableDepthTest();
shaDepthFunc(GFX_LESS_EQUAL);
shaCullFace(GFX_BACK);
shaCalculateLight();
COLOR colModelColor = MulColors(shaGetModelColor(),shaGetCurrentColor());
BOOL bFullBright = shaGetFlags()&BASE_FULL_BRIGHT;
BOOL bOpaque = (colModelColor&0xFF)==0xFF;
// if fully opaque
if(bOpaque) {
shaDisableAlphaTest();
shaDisableBlend();
shaEnableDepthWrite();
// if translucent
} else {
shaEnableBlend();
shaBlendFunc(GFX_SRC_ALPHA, GFX_INV_SRC_ALPHA);
shaDisableDepthWrite();
shaModifyColorForFog();
}
if(shaOverBrightningEnabled()) shaSetTextureModulation(2);
shaRender();
if(shaOverBrightningEnabled()) shaSetTextureModulation(1);
DoReflectionLayer(REFLECTION_TEXTURE,REFLECTION_COLOR,bFullBright);
DoSpecularLayer(SPECULAR_TEXTURE,SPECULAR_COLOR);
if(bOpaque) {
shaDoFogPass();
}
}
SHADER_DESC(ReflectionAndSpecular,ShaderDesc &shDesc)
{
shDesc.sd_astrTextureNames.New(TEXTURE_COUNT);
shDesc.sd_astrTexCoordNames.New(UVMAPS_COUNT);
shDesc.sd_astrColorNames.New(COLOR_COUNT);
shDesc.sd_astrFloatNames.New(FLOAT_COUNT);
shDesc.sd_astrFlagNames.New(FLAGS_COUNT);
shDesc.sd_astrTextureNames[0] = "Base texture";
shDesc.sd_astrTextureNames[1] = "Reflection texture";
shDesc.sd_astrTextureNames[2] = "Specular texture";
shDesc.sd_astrTexCoordNames[0] = "Base uvmap";
shDesc.sd_astrColorNames[0] = "Base color";
shDesc.sd_astrColorNames[1] = "Reflection color";
shDesc.sd_astrColorNames[2] = "Specular color";
shDesc.sd_astrFlagNames[0] = "Double sided";
shDesc.sd_astrFlagNames[1] = "Full bright";
shDesc.sd_strShaderInfo = "Basic shader";
}