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forked from 0ad/0ad
0ad/binaries/data/mods/public/shaders/model_common.fp
Ykkrosh 97c934ad1c Apply unit shading colour in shader renderpath.
Don't adjust the shading colour of units in FoW (the shading comes from
the LOS texture instead).

This was SVN commit r9142.
2011-04-02 12:04:19 +00:00

66 lines
1.5 KiB
GLSL

!!ARBfp1.0
#ifdef USE_FP_SHADOW
OPTION ARB_fragment_program_shadow;
#endif
#ifdef LIGHTING_MODEL_old
#define CLAMP_LIGHTING
#endif
#ifdef CLAMP_LIGHTING // for compat with old scenarios that expect clamped lighting
#define MAD_MAYBE_SAT MAD_SAT
#else
#define MAD_MAYBE_SAT MAD
#endif
#ifdef USE_OBJECTCOLOR
PARAM objectColor = program.local[0];
#endif
PARAM shadingColor = program.local[1];
PARAM ambient = program.local[2];
TEMP tex;
TEMP temp;
TEMP diffuse;
TEMP color;
TEX tex, fragment.texcoord[0], texture[0], 2D;
#ifdef USE_TRANSPARENT
MOV result.color.a, tex;
#endif
// Apply player-coloring based on texture alpha
#ifdef USE_OBJECTCOLOR
LRP temp.rgb, objectColor, 1.0, tex.a;
MUL color.rgb, tex, temp;
#else
MOV color.rgb, tex;
#endif
// Compute color = texture * (ambient + diffuse*shadow)
// (diffuse is 2*fragment.color due to clamp-avoidance in the vertex program)
#ifdef USE_SHADOW
#ifdef USE_FP_SHADOW
TEX temp, fragment.texcoord[1], texture[1], SHADOW2D;
#else
TEX tex, fragment.texcoord[1], texture[1], 2D;
MOV_SAT temp.z, fragment.texcoord[1].z;
SGE temp, tex.x, temp.z;
#endif
MUL diffuse.rgb, fragment.color, 2.0;
MAD_MAYBE_SAT temp.rgb, diffuse, temp, ambient;
MUL color.rgb, color, temp;
#else
MAD_MAYBE_SAT temp.rgb, fragment.color, 2.0, ambient;
MUL color.rgb, color, temp;
#endif
// Multiply everything by the LOS texture
TEX tex.a, fragment.texcoord[2], texture[2], 2D;
MUL color.rgb, color, tex.a;
MUL result.color.rgb, color, shadingColor;
END