64 lines
1.5 KiB
Plaintext
64 lines
1.5 KiB
Plaintext
// __multiversion__
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// This signals the loading code to prepend either #version 100 or #version 300 es as apropriate.
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// To use centroid sampling we need to have version 300 es shaders, which requires changing:
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// attribute to in
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// varying to out when in vertex shaders or in when in fragment shaders
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// defining an out vec4 FragColor and replacing uses of gl_FragColor with FragColor
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// texture2D to texture
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#if __VERSION__ >= 300
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// version 300 code
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#define varying in
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#define texture2D texture
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out vec4 FragColor;
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#define gl_FragColor FragColor
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#else
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// version 100 code
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#endif
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uniform sampler2D TEXTURE_0;
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uniform sampler2D TEXTURE_1;
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varying vec2 uv;
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varying vec4 color;
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varying vec4 worldPosition;
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varying vec4 fogColor;
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void main()
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{
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vec4 albedo = texture2D( TEXTURE_0, uv);
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#ifdef ALPHA_TEST
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if (albedo.a < 0.5)
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discard;
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#endif
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albedo.a *= color.a;
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vec2 occlusionUV = worldPosition.xz;
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vec4 occlusionTexture = texture2D( TEXTURE_1, occlusionUV);
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// clamp the uvs
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if ( occlusionUV.x >= 0.0 && occlusionUV.x <= 1.0 &&
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occlusionUV.y >= 0.0 && occlusionUV.y <= 1.0 &&
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worldPosition.y < occlusionTexture.a) {
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albedo.a = 0.0;
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}
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float mixAmount = clamp ( (worldPosition.y - occlusionTexture.a)*10.0, 0.0, 1.0);
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vec3 lighting = mix(occlusionTexture.rgb, color.rgb, mixAmount);
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vec4 finalOutput = albedo;
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finalOutput.rgb *= lighting.rgb;
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//apply fog
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gl_FragColor.rgb = mix( finalOutput.rgb, fogColor.rgb, fogColor.a );
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gl_FragColor.a = finalOutput.a;
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}
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