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Correct issue with tangents

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This commit is contained in:
Ray 2018-03-04 23:24:30 +01:00
parent 85850a955a
commit 276847eca9
1 changed files with 3 additions and 3 deletions
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6
examples/models/resources/shaders/pbr.vs
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@ -12,7 +12,7 @@
in vec3 vertexPosition;
in vec2 vertexTexCoord;
in vec3 vertexNormal;
in vec3 vertexTangent;
in vec4 vertexTangent;
// Input uniform values
uniform mat4 mvp;
@ -28,7 +28,7 @@ out vec3 fragBinormal;
void main()
{
// Calculate binormal from vertex normal and tangent
vec3 vertexBinormal = cross(vertexNormal, vertexTangent);
vec3 vertexBinormal = cross(vertexNormal, vec3(vertexTangent));
// Calculate fragment normal based on normal transformations
mat3 normalMatrix = transpose(inverse(mat3(mMatrix)));
@ -39,7 +39,7 @@ void main()
// Send vertex attributes to fragment shader
fragTexCoord = vertexTexCoord;
fragNormal = normalize(normalMatrix*vertexNormal);
fragTangent = normalize(normalMatrix*vertexTangent);
fragTangent = normalize(normalMatrix*vec3(vertexTangent));
fragTangent = normalize(fragTangent - dot(fragTangent, fragNormal)*fragNormal);
fragBinormal = normalize(normalMatrix*vertexBinormal);
fragBinormal = cross(fragNormal, fragTangent);