Jared Miller
c8a07d0783
The ant rendering ShaderMaterial was missing glslVersion: THREE.GLSL3 while every other material in the project had it. The vert shader used varying (GLSL1) and the frag used in (GLSL3), causing vIsCarryingFood to receive garbage values — making all ants appear to carry food from the first frame regardless of actual state. Also reverts the debug +20 cell spawn height offset.
36 lines
No EOL
897 B
GLSL
36 lines
No EOL
897 B
GLSL
precision highp float;
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precision highp int;
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#define PI 3.1415926535897932384626433832795
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out vec2 vUv;
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out float vIsCarryingFood;
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uniform sampler2D tData;
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vec2 rotate(vec2 v, float a) {
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float s = sin(a);
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float c = cos(a);
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mat2 m = mat2(c, -s, s, c);
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return m * v;
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}
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void main() {
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vUv = uv;
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float dataTextureSize = vec2(textureSize(tData, 0)).x;
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float id = float(gl_InstanceID);
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float sampleY = floor(id / dataTextureSize);
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float sampleX = id - sampleY * dataTextureSize;
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vec2 antDataUV = (vec2(sampleX, sampleY) + 0.5) / dataTextureSize;
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vec4 dataSample = texture(tData, antDataUV);
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vec2 offset = dataSample.xy;
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vec2 rotatedPosition = rotate(position.xy, -dataSample.z + PI * 0.5);
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vIsCarryingFood = float(int(dataSample.w) & 1);
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gl_Position = projectionMatrix * modelViewMatrix * vec4(vec2(rotatedPosition + offset), 0, 1);
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} |