Weight painting with draw manager

This implements weight rendering with the draw manager, with all drawing
options (Shading, wire, face masking, vertex masking).

This is part of T51208

Reviewers: campbellbarton

Subscribers: dfelinto

Differential Revision: https://developer.blender.org/D2654

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/gpu/shaders/gpu_shader_simple_lighting_smooth_color_alpha_frag.glsl b/source/blender/gpu/shaders/gpu_shader_simple_lighting_smooth_color_alpha_frag.glsl
new file mode 100644
index 00000000000..6b13f408c84
--- /dev/null
+++ b/source/blender/gpu/shaders/gpu_shader_simple_lighting_smooth_color_alpha_frag.glsl
@@ -0,0 +1,14 @@
+
+uniform vec3 light;
+uniform float alpha;
+uniform float global;
+
+in vec3 normal;
+in vec4 finalColor;
+out vec4 fragColor;
+
+void main()
+{
+	fragColor = finalColor * (global + (1.0 - global) * max(0.0, dot(normalize(normal), light)));
+	fragColor.a = alpha;
+}