add depth prepass

1 files changed, 5 insertions, 1 deletions

diff --git a/model.cpp b/model.cpp
index e8be727..c3d01ac 100644
--- a/model.cpp
+++ b/model.cpp
@@ -165,6 +165,7 @@ void Model::render(
 		cbuffers[i].view_projection = view_projection;
 		cbuffers[i].model = transform * meshes[i].world;
 	}
+	bool depth_only = !pass.colour_count;
 	dev->unmap_buffer(mvp);
 	for (i = 0; i < c; i++) {
 		Mesh& mesh = meshes[i];
@@ -187,7 +188,10 @@ void Model::render(
 		draw.first_vertex = mesh.offset;
 		draw.vertex_offset = mesh.vbo_offset;
 		pb.begin();
-		pb.depth(true, true, Depth_Mode::less);
+		if (depth_only)
+			pb.depth(true, true, Depth_Mode::less);
+		else
+			pb.depth(true, false, Depth_Mode::equal);
 		pb.shader(mesh.shader);
 		pb.cbuffer(
 			mesh.mvp_binding,