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https://github.com/luanti-org/luanti.git
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cef016d393
Fragment color for nodes is now calculated from: * Texture color, highlighted by artificial light if present (light color conveyed via vertex color). * Texture color highlighted by natural light (conveyed via vertex color) filtered by shadow. * Reflected day/moonlight filtered by shadow (color and intensity), assuming some portion of the light is directly reflected from the materials.
43 lines
1.0 KiB
GLSL
43 lines
1.0 KiB
GLSL
uniform sampler2D ColorMapSampler;
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varying vec4 tPos;
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#ifdef COLORED_SHADOWS
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varying vec3 varColor;
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// c_precision of 128 fits within 7 base-10 digits
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const float c_precision = 128.0;
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const float c_precisionp1 = c_precision + 1.0;
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float packColor(vec3 color)
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{
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return floor(color.b * c_precision + 0.5)
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+ floor(color.g * c_precision + 0.5) * c_precisionp1
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+ floor(color.r * c_precision + 0.5) * c_precisionp1 * c_precisionp1;
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}
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const vec3 black = vec3(0.0);
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#endif
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void main()
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{
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vec4 col = texture2D(ColorMapSampler, gl_TexCoord[0].st);
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#ifndef COLORED_SHADOWS
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if (col.a < 0.5)
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discard;
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#endif
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float depth = 0.5 + tPos.z * 0.5;
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// ToDo: Liso: Apply movement on waving plants
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// depth in [0, 1] for texture
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//col.rgb = col.a == 1.0 ? vec3(1.0) : col.rgb;
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#ifdef COLORED_SHADOWS
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col.rgb *= varColor.rgb;
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// premultiply color alpha (see-through side)
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float packedColor = packColor(col.rgb * (1.0 - col.a));
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gl_FragColor = vec4(depth, packedColor, 0.0,1.0);
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#else
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gl_FragColor = vec4(depth, 0.0, 0.0, 1.0);
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#endif
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}
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