39 lines
970 B
Plaintext
39 lines
970 B
Plaintext
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#version 330 core
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layout(location = 0) in vec3 vertexPosition;
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layout(location = 1) in vec3 instanceSize;
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layout(location = 2) in vec3 instancePosition;
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layout(location = 3) in float instanceRotation;
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layout(location = 4) in vec4 instanceStart;
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layout(location = 5) in vec4 instanceStop;
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layout(location = 6) in vec4 instanceIndex;
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uniform mat4 MVP;
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out vec3 pos; // to fragment shader
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#define M_PI 3.1415926535897932384626433832795
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out vec4 start;
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out vec4 stop;
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out vec4 clusterIndex;
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void main() {
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vec3 new_pos = vertexPosition*instanceSize;
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float cost = cos(instanceRotation*M_PI/180.0);
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float sint = sin(instanceRotation*M_PI/180.0);
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float x = new_pos.x * cost - new_pos.y * sint;
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float y = new_pos.x * sint + new_pos.y * cost;
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new_pos.x = x;
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new_pos.y = y;
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new_pos = new_pos + instancePosition;
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gl_Position = MVP * vec4(new_pos, 1.0);
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pos = vertexPosition;
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start = instanceStart*2-1;
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stop = instanceStop*2-1;
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clusterIndex = instanceIndex;
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}
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