mirror of https://github.com/GTAmodding/re3.git
75 lines
1.7 KiB
GLSL
75 lines
1.7 KiB
GLSL
uniform sampler2D tex0;
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uniform sampler2D tex1;
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uniform float u_shininess;
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uniform vec3 u_skyTop;
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uniform vec3 u_skyBot;
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// matfx:
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// case 1 normal envmap
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// custom1 (4.0, 1.0, 1.0, coef)
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// custom2 (0.25, 3.0, 1.0, 1.0)
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// case 2 too strong
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// custom1 (4.0, 1.0, 2.0, coef)
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// custom2 (0.5, 3.0, 1.0, 1.0)
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// ???: practically no fresnel
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// custom1 (4.0, 1.25, 0.01, coef)
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// custom2 (1.0, 2.0, 1.1, 2.0)
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#define power (4.0)
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#define preMult (1.0)
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#define postMult (1.0)
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#define minRefl (0.25)
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#define maxRefl (3.0)
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#define minOpacity (1.0)
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#define maxOpacity (1.0)
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//#define preMult (1.0)
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//#define postMult (2.0)
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//#define minRefl (0.5)
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//#define maxRefl (3.0)
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//#define minOpacity (1.0)
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//#define maxOpacity (1.0)
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//#define preMult (1.25)
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//#define postMult (0.01)
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//#define minRefl (1.0)
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//#define maxRefl (2.0)
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//#define minOpacity (1.1)
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//#define maxOpacity (2.0)
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FSIN vec4 v_color;
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FSIN vec2 v_tex0;
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FSIN vec2 v_tex1;
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FSIN float v_fog;
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FSIN vec2 v_reflData;
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#define v_NdotV (v_reflData.x)
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#define v_lightingCont (v_reflData.y)
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void
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main(void)
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{
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vec4 pass1 = v_color*texture(tex0, vec2(v_tex0.x, 1.0-v_tex0.y));
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vec3 envtex = texture(tex1, v_tex1).rgb; // V flipped
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vec3 skyColour = mix(u_skyBot, u_skyTop, envtex.g);
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vec3 envOut = mix(envtex.rrr, skyColour, envtex.b);
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float fresnel = mix(u_shininess, u_shininess * 2.0, v_NdotV);
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fresnel = pow(v_NdotV * preMult, power);
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fresnel = clamp(fresnel * postMult, 0.0, 1.0);
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float reflectivity = v_lightingCont * mix(minRefl, maxRefl, fresnel)*u_shininess;
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float opacity = mix(minOpacity, maxOpacity, fresnel)*pass1.a;
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vec4 color = pass1 + vec4(reflectivity * envOut, 0.0);
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color.a = opacity;
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color.rgb = mix(u_fogColor.rgb, color.rgb, v_fog);
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DoAlphaTest(color.a);
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FRAGCOLOR(color);
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}
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