Shading: Add More Features To The Voronoi Node.

This patch allows the Voronoi node to operate in 1D, 2D, and 4D space.
It also adds a Randomness input to control the randomness of the texture.
Additionally, it adds three new modes of operation:

- Smooth F1: A smooth version of F1 Voronoi with no discontinuities.
- Distance To Edge: Returns the distance to the edges of the cells.
- N-Sphere Radius: Returns the radius of the n-sphere inscribed in
the cells. In other words, it is half the distance between the
closest feature point and the feature point closest to it.

And it removes the following three modes of operation:

- F3.
- F4.
- Cracks.

The Distance metric is now called Euclidean, and it computes the actual
euclidean distance as opposed to the old method of computing the squared
euclidean distance.

This breaks backward compatibility in many ways, including the base case.

Reviewers: brecht, JacquesLucke

Differential Revision: https://developer.blender.org/D5743

1 files changed, 1 insertions, 10 deletions

diff --git a/source/blender/gpu/intern/gpu_material_library.h b/source/blender/gpu/intern/gpu_material_library.h
index 9c0cf3e6bea..06544d27af9 100644
--- a/source/blender/gpu/intern/gpu_material_library.h
+++ b/source/blender/gpu/intern/gpu_material_library.h
@@ -44,7 +44,6 @@ extern char datatoc_gpu_shader_material_blackbody_glsl[];
 extern char datatoc_gpu_shader_material_bright_contrast_glsl[];
 extern char datatoc_gpu_shader_material_bump_glsl[];
 extern char datatoc_gpu_shader_material_camera_glsl[];
-extern char datatoc_gpu_shader_material_cell_noise_glsl[];
 extern char datatoc_gpu_shader_material_clamp_glsl[];
 extern char datatoc_gpu_shader_material_color_ramp_glsl[];
 extern char datatoc_gpu_shader_material_color_util_glsl[];
@@ -149,13 +148,6 @@ static GPUMaterialLibrary gpu_shader_material_fractal_noise_library = {
     .dependencies = {&gpu_shader_material_noise_library, NULL},
 };
 
-static GPUMaterialLibrary gpu_shader_material_cell_noise_library = {
-    .code = datatoc_gpu_shader_material_cell_noise_glsl,
-    .dependencies = {&gpu_shader_material_math_util_library,
-                     &gpu_shader_material_hash_library,
-                     NULL},
-};
-
 static GPUMaterialLibrary gpu_shader_material_add_shader_library = {
     .code = datatoc_gpu_shader_material_add_shader_glsl,
     .dependencies = {NULL},
@@ -481,7 +473,7 @@ static GPUMaterialLibrary gpu_shader_material_texture_coordinates_library = {
 static GPUMaterialLibrary gpu_shader_material_tex_voronoi_library = {
     .code = datatoc_gpu_shader_material_tex_voronoi_glsl,
     .dependencies = {&gpu_shader_material_math_util_library,
-                     &gpu_shader_material_cell_noise_library,
+                     &gpu_shader_material_hash_library,
                      NULL},
 };
 
@@ -571,7 +563,6 @@ static GPUMaterialLibrary *gpu_material_libraries[] = {
     &gpu_shader_material_hash_library,
     &gpu_shader_material_noise_library,
     &gpu_shader_material_fractal_noise_library,
-    &gpu_shader_material_cell_noise_library,
     &gpu_shader_material_add_shader_library,
     &gpu_shader_material_ambient_occlusion_library,
     &gpu_shader_material_glossy_library,