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New tech ENABLE_SLOPE_RENDERING - 1st installment of rendering objects colored by facets slope

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enricoturri1966 2020-03-13 15:09:07 +01:00
parent 84c9136e2d
commit b36051af82
12 changed files with 277 additions and 19 deletions
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18
resources/shaders/gouraud.vs
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@ -20,13 +20,22 @@ const vec3 ZERO = vec3(0.0, 0.0, 0.0);
struct PrintBoxDetection
{
bool active;
vec3 min;
vec3 max;
bool volume_detection;
mat4 volume_world_matrix;
};
struct SlopeDetection
{
bool active;
// x = yellow z, y = red z
vec2 z_range;
mat3 volume_world_normal_matrix;
};
uniform PrintBoxDetection print_box;
uniform SlopeDetection slope;
// Clipping plane, x = min z, y = max z. Used by the FFF and SLA previews to clip with a top / bottom plane.
uniform vec2 z_range;
@ -41,6 +50,8 @@ varying vec3 delta_box_max;
varying vec3 clipping_planes_dots;
varying float world_normal_z;
void main()
{
// First transform the normal into camera space and normalize the result.
@ -61,7 +72,7 @@ void main()
intensity.x += NdotL * LIGHT_FRONT_DIFFUSE;
// compute deltas for out of print volume detection (world coordinates)
if (print_box.volume_detection)
if (print_box.active)
{
vec3 v = (print_box.volume_world_matrix * gl_Vertex).xyz;
delta_box_min = v - print_box.min;
@ -73,6 +84,9 @@ void main()
delta_box_max = ZERO;
}
// z component of normal vector in world coordinate used for slope shading
world_normal_z = slope.active ? (normalize(slope.volume_world_normal_matrix * gl_Normal)).z : 0.0;
gl_Position = ftransform();
// Point in homogenous coordinates.
vec4 world_pos = print_box.volume_world_matrix * gl_Vertex;