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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/140/variable_layer_height.vs
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@ -16,7 +16,7 @@ const vec3 LIGHT_FRONT_DIR = vec3(0.6985074, 0.1397015, 0.6985074);
uniform mat4 view_model_matrix;
uniform mat4 projection_matrix;
uniform mat3 normal_matrix;
uniform mat3 view_normal_matrix;
uniform mat4 volume_world_matrix;
uniform float object_max_z;
@ -38,7 +38,7 @@ void main()
// =====================================================
// First transform the normal into camera space and normalize the result.
vec3 normal = (object_max_z > 0.0) ? vec3(0.0, 0.0, 1.0) : normalize(normal_matrix * v_normal);
vec3 normal = (object_max_z > 0.0) ? vec3(0.0, 0.0, 1.0) : 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.