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Tech ENABLE_LEGACY_OPENGL_REMOVAL - Fixed calculation of normal matrices sent to shaders

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(cherry picked from commit prusa3d/PrusaSlicer@c468dcbed7)
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enricoturri1966 2023-10-28 00:01:28 +08:00 • committed by Noisyfox
parent 4fb5b1f904
commit 19ad0ca4d9
29 changed files with 175 additions and 152 deletions
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4
resources/shaders/110/gouraud.vs
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@ -27,7 +27,7 @@ struct SlopeDetection
uniform mat4 view_model_matrix;
uniform mat4 projection_matrix;
uniform mat3 normal_matrix;
uniform mat3 view_normal_matrix;
uniform mat4 volume_world_matrix;
uniform SlopeDetection slope;
@ -51,7 +51,7 @@ varying vec3 eye_normal;
void main()
{
// First transform the normal into camera space and normalize the result.
eye_normal = normalize(normal_matrix * v_normal);
eye_normal = normalize(view_normal_matrix * v_normal);
// Compute the cos of the angle between the normal and lights direction. The light is directional so the direction is constant for every vertex.
// Since these two are normalized the cosine is the dot product. We also need to clamp the result to the [0,1] range.