Silhouette Overlap Overlay

Added Object Overlap Overlay

 - Added R32UI support to GPU_framebuffer
 - Added R32U support to draw manager
 - The overlay mode has a object data pass that will render 'needed' data to specific buffers so we can mix them together via a deferred rendering. In future will also add UV's and other data
 - Overlap is implemented as an overlay so it could be used on top of the Scene lighted Solid mode (that will be rendered by Eevee.

Reviewers: fclem, brecht

Reviewed By: fclem

Subscribers: sergey

Tags: #code_quest

Maniphest Tasks: T54726

Differential Revision: https://developer.blender.org/D3174

1 files changed, 15 insertions, 0 deletions

diff --git a/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl b/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl
new file mode 100644
index 00000000000..208c684f722
--- /dev/null
+++ b/source/blender/draw/engines/workbench/shaders/workbench_prepass_frag.glsl
@@ -0,0 +1,15 @@
+uniform int object_id = 0;
+uniform vec3 object_color = vec3(1.0, 0.0, 1.0);
+
+in vec3 normal_viewport;
+
+out uint objectId;
+out vec3 diffuseColor;
+out vec3 normalViewport;
+
+void main()
+{
+	objectId = uint(object_id);
+	diffuseColor = object_color;
+	normalViewport = normal_viewport;
+}