mirror of
https://github.com/ptitSeb/Serious-Engine
synced 2024-11-22 18:30:27 +01:00
137 lines
3.7 KiB
C++
137 lines
3.7 KiB
C++
/* Copyright (c) 2002-2012 Croteam Ltd. All rights reserved. */
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#include "StdH.h"
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#define TEXTURE_COUNT 2
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#define UVMAPS_COUNT 2
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#define COLOR_COUNT 2
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#define FLOAT_COUNT 2
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#define FLAGS_COUNT 2
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#define LAYER0_TEXTURE 0
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#define LAYER0_UVMAP 0
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#define LAYER0_COLOR 0
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#define LAYER0_TILING 0
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#define LAYER1_TEXTURE 1
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#define LAYER1_UVMAP 1
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#define LAYER1_COLOR 1
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#define LAYER1_TILING 1
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#define BASE_DOUBLE_SIDED (1UL<<0) // Double sided
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#define BASE_FULL_BRIGHT (1UL<<1) // Full bright
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SHADER_MAIN(MultiLayer)
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{
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// this will be reused for all layers
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FLOAT fLayerTiling = 1.0f;
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// do 0th layer pass - base layer
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shaSetTexture(LAYER0_TEXTURE);
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shaSetTextureWrapping( GFX_REPEAT, GFX_REPEAT);
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shaSetUVMap(LAYER0_UVMAP);
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shaSetColor(LAYER0_COLOR);
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shaEnableDepthTest();
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shaDepthFunc(GFX_LESS_EQUAL);
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COLOR &colModelColor = shaGetModelColor();
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BOOL bDoubleSided = shaGetFlags()&BASE_DOUBLE_SIDED;
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BOOL bOpaque = (colModelColor&0xFF)==0xFF;
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if(bDoubleSided) {
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shaCullFace(GFX_NONE);
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} else {
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shaCullFace(GFX_BACK);
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}
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shaCalculateLight();
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// if fully opaque
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if(bOpaque) {
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// shaEnableAlphaTest(TRUE);
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shaDisableBlend();
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shaEnableDepthWrite();
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// if translucent
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} else {
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// shaEnableAlphaTest(FALSE);
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shaEnableBlend();
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shaBlendFunc(GFX_SRC_ALPHA, GFX_INV_SRC_ALPHA);
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shaDisableDepthWrite();
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shaModifyColorForFog();
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}
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if(shaOverBrightningEnabled()) shaSetTextureModulation(2);
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fLayerTiling = shaGetFloat(LAYER0_TILING);
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if (fLayerTiling!=1.0f) {
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GFXTexCoord *ptxcOld = shaGetUVMap(LAYER0_UVMAP);
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GFXTexCoord *ptxcNew = shaGetNewTexCoordArray();
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INDEX ctTexCoords = shaGetVertexCount();
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if(ctTexCoords>0 && ptxcOld!=NULL) {
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for(INDEX itxc=0;itxc<ctTexCoords;itxc++)
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{
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ptxcNew[itxc].u = ptxcOld[itxc].u * fLayerTiling;
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ptxcNew[itxc].v = ptxcOld[itxc].v * fLayerTiling;
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}
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shaSetTexCoords(ptxcNew);
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}
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}
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shaRender();
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if(bOpaque) {
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shaDoFogPass();
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}
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// do 1st layer pass
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fLayerTiling = shaGetFloat(LAYER1_TILING);
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shaBlendFunc( GFX_SRC_ALPHA, GFX_INV_SRC_ALPHA);
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shaSetTexture(LAYER1_TEXTURE);
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shaSetUVMap(LAYER1_UVMAP);
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shaSetColor(LAYER1_COLOR);
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shaCalculateLight();
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shaEnableBlend();
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if (fLayerTiling!=1.0f) {
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GFXTexCoord *ptxcOld = shaGetUVMap(LAYER1_UVMAP);
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GFXTexCoord *ptxcNew = shaGetNewTexCoordArray();
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INDEX ctTexCoords = shaGetVertexCount();
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if(ctTexCoords>0 && ptxcOld!=NULL) {
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for(INDEX itxc=0; itxc<ctTexCoords; itxc++)
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{
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ptxcNew[itxc].u = ptxcOld[itxc].u * fLayerTiling;
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ptxcNew[itxc].v = ptxcOld[itxc].v * fLayerTiling;
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}
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shaSetTexCoords(ptxcNew);
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}
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}
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shaRender();
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shaDisableBlend();
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if(shaOverBrightningEnabled()) shaSetTextureModulation(1);
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}
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SHADER_DESC(MultiLayer, ShaderDesc &shDesc)
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{
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shDesc.sd_astrTextureNames .New(TEXTURE_COUNT);
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shDesc.sd_astrTexCoordNames.New(UVMAPS_COUNT);
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shDesc.sd_astrColorNames .New(COLOR_COUNT);
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shDesc.sd_astrFloatNames .New(FLOAT_COUNT);
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shDesc.sd_astrFlagNames .New(FLAGS_COUNT);
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// layer 0 - base
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shDesc.sd_astrTextureNames [0] = "Layer0* texture";
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shDesc.sd_astrTexCoordNames[0] = "Layer0* UVMap";
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shDesc.sd_astrColorNames [0] = "Layer0* color";
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shDesc.sd_astrFloatNames [0] = "Layer0* tiling factor";
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// layer 1
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shDesc.sd_astrTextureNames [1] = "Layer1 texture";
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shDesc.sd_astrTexCoordNames[1] = "Layer1 UVMap";
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shDesc.sd_astrColorNames [1] = "Layer1 color";
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shDesc.sd_astrFloatNames [1] = "Layer1 tiling factor";
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shDesc.sd_astrFlagNames[0] = "Double sided";
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shDesc.sd_astrFlagNames[1] = "Full bright";
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shDesc.sd_strShaderInfo = "Multi Layer shader";
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} |