DRW: Put all view-only dependant uniform in a UBO.

This leads to less lookups to the GWNShaderInterface and less uniform upload.

We still keep a legacy path so that Builtin uniforms can still work. We might restrict this path to Builtin shader only in the future.

1 files changed, 14 insertions, 0 deletions

diff --git a/source/blender/draw/modes/shaders/common_view_lib.glsl b/source/blender/draw/modes/shaders/common_view_lib.glsl
new file mode 100644
index 00000000000..d261d263a6f
--- /dev/null
+++ b/source/blender/draw/modes/shaders/common_view_lib.glsl
@@ -0,0 +1,14 @@
+/* keep in sync with DRWManager.view_data */
+layout(std140) uniform viewBlock {
+	/* Same order as DRWViewportMatrixType */
+	mat4 ViewProjectionMatrix;
+	mat4 ViewProjectionMatrixInverse;
+	mat4 ViewMatrix;
+	mat4 ViewMatrixInverse;
+	mat4 ProjectionMatrix;
+	mat4 ProjectionMatrixInverse;
+
+	vec4 CameraTexCoFactors;
+
+	vec4 clipPlanes[2];
+};