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https://git.code.sf.net/p/quake/quakeforge
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39 lines
900 B
GLSL
39 lines
900 B
GLSL
#version 450
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layout (set = 0, binding = 0) uniform Matrices {
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mat4 Projection3d;
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mat4 View;
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mat4 Sky;
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mat4 Projection2d;
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};
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layout (triangles) in;
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layout (triangle_strip, max_vertices = 3) out;
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layout (location = 0) in vec4 v_tl_st[];
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layout (location = 1) in vec3 v_direction[];
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layout (location = 0) out vec4 tl_st;
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layout (location = 1) out vec3 direction;
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layout (location = 2) out vec3 normal;
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layout (location = 3) out vec4 position;
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void
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main()
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{
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vec3 a = gl_in[0].gl_Position.xyz;
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vec3 b = gl_in[1].gl_Position.xyz;
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vec3 c = gl_in[2].gl_Position.xyz;
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vec3 n = normalize (cross (c - a, b - a));
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for (int vert = 0; vert < 3; vert++) {
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vec4 p = gl_in[vert].gl_Position;
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gl_Position = Projection3d * (View * (p));
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tl_st = v_tl_st[vert];
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direction = v_direction[vert];
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normal = n;
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position = p;
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EmitVertex ();
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}
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EndPrimitive ();
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}
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