allow binding only a portion of a cbuffer

1 files changed, 10 insertions, 1 deletions

diff --git a/pipeline.cpp b/pipeline.cpp
index 8867a8d..8750db0 100644
--- a/pipeline.cpp
+++ b/pipeline.cpp
@@ -185,7 +185,12 @@ void Pipeline_Builder::texture(
 	td->texture = t;
 }
 
-void Pipeline_Builder::cbuffer(int binding, Buffer_Id id) {
+void Pipeline_Builder::cbuffer(
+	int binding,
+	Buffer_Id id,
+	int offset,
+	int size
+) {
 	Descriptor* d;
 	Constant_Buffer_Descriptor* cd;
 	assert(pip->descriptor_count < pipeline_max_descriptors);
@@ -194,6 +199,8 @@ void Pipeline_Builder::cbuffer(int binding, Buffer_Id id) {
 	d->slot = binding;
 	d->type = Descriptor::Type::constant_buffer;
 	cd->buffer = id;
+	cd->offset = offset;
+	cd->size = size;
 }
 
 void Pipeline_Builder::vertex_format(Vertex_Format_Id vf) {
@@ -237,6 +244,8 @@ Pipeline& Pipeline_Builder::build() {
 				case Descriptor::Type::constant_buffer: {
 					auto cd = (Constant_Buffer_Descriptor*)d->payload;
 					h(pip->descriptor_resource_hash, cd->buffer);
+					h(pip->descriptor_resource_hash, cd->size);
+					h(pip->descriptor_resource_hash, cd->offset);
 				} break;
 			}
 		}