Clément Foucault
6b38fa8cab
This is much faster and simpler. This is also to make it compatible with custom bone shape in the future.
49 lines
1.1 KiB
GLSL
49 lines
1.1 KiB
GLSL
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uniform mat3 NormalMatrix;
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uniform mat4 ViewMatrix;
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uniform mat4 ProjectionMatrix;
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uniform vec2 viewportSize;
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/* ---- Instanciated Attribs ---- */
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in vec3 pos;
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in vec3 nor;
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in vec3 snor;
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/* ---- Per instance Attribs ---- */
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in mat4 InstanceModelMatrix;
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in vec4 outlineColorSize;
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out vec4 pPos;
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out vec3 vPos;
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out vec2 ssPos;
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out vec2 ssNor;
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out vec4 vColSize;
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/* project to screen space */
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vec2 proj(vec4 pos)
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{
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return (0.5 * (pos.xy / pos.w) + 0.5) * viewportSize;
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}
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void main()
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{
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/* This is slow and run per vertex, but it's still faster than
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* doing it per instance on CPU and sending it on via instance attrib */
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mat3 NormalMatrix = transpose(inverse(mat3(ViewMatrix * InstanceModelMatrix)));
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vec4 viewpos = ViewMatrix * (InstanceModelMatrix * vec4(pos, 1.0));
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vPos = viewpos.xyz;
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pPos = ProjectionMatrix * viewpos;
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/* TODO FIX: there is still a problem with this vector
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* when the bone is scaled or in persp mode. But it's
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* barelly visible at the outline corners. */
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ssNor = normalize((NormalMatrix * snor).xy);
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ssPos = proj(pPos);
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vColSize = outlineColorSize;
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}
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