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084ac76f55
Since the identity matrix is mixed in with the other bones, interesting things will happen if the bone weights don't add up to 1 and are not all zero.
69 lines
1.9 KiB
GLSL
69 lines
1.9 KiB
GLSL
#version 450
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#extension GL_GOOGLE_include_directive : enable
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#extension GL_EXT_multiview : enable
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layout (constant_id = 0) const bool IQMDepthOnly = false;
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layout (constant_id = 1) const bool IQMShadow = false;
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layout (set = 0, binding = 0) uniform
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#include "matrices.h"
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;
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layout (set = 1, binding = 0) buffer ShadowView {
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mat4x4 shadowView[];
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};
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layout (set = 3, binding = 0) buffer Bones {
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// NOTE these are transposed, so v * m
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mat3x4 bones[];
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};
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layout (push_constant) uniform PushConstants {
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mat4 Model;
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float blend;
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uint MatrixBase;
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};
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layout (location = 0) in vec3 vposition;
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layout (location = 1) in uvec4 vbones;
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layout (location = 2) in vec4 vweights;
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layout (location = 3) in vec2 vtexcoord;
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layout (location = 4) in vec3 vnormal;
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layout (location = 5) in vec4 vtangent;
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layout (location = 6) in vec4 vcolor;
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layout (location = 0) out vec2 texcoord;
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layout (location = 1) out vec4 position;
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layout (location = 2) out vec3 normal;
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layout (location = 3) out vec3 tangent;
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layout (location = 4) out vec3 bitangent;
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layout (location = 5) out vec4 color;
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void
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main (void)
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{
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mat3x4 m = bones[vbones.x] * vweights.x;
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m += bones[vbones.y] * vweights.y;
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m += bones[vbones.z] * vweights.z;
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m += bones[vbones.w] * vweights.w;
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m += mat3x4(1,0,0,0,0,1,0,0,0,0,1,0) * (1 - dot(vweights, vec4(1,1,1,1)));
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vec4 pos = Model * vec4 (vec4(vposition, 1) * m, 1);
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if (IQMShadow) {
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gl_Position = shadowView[MatrixBase + gl_ViewIndex] * pos;
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} else {
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gl_Position = Projection3d * (View[gl_ViewIndex] * pos);
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}
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if (!IQMDepthOnly) {
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position = pos;
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mat3 adjTrans = mat3 (cross(m[1].xyz, m[2].xyz),
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cross(m[2].xyz, m[0].xyz),
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cross(m[0].xyz, m[1].xyz));
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normal = normalize (mat3 (Model) * vnormal * adjTrans);
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tangent = mat3 (Model) * vtangent.xyz * adjTrans;
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tangent = normalize (tangent - dot (tangent, normal) * normal);
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bitangent = cross (normal, tangent) * vtangent.w;
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texcoord = vtexcoord;
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color = vcolor;
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}
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}
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