Add glVertexArray useBuffer

Wraps glVertexArrayVertexBuffer automatically getting the buffer name
from the argument and deriving the stride from the container's
value_type.

2 files changed, 13 insertions, 0 deletions

diff --git a/gfx/gl/glVertexArray.h b/gfx/gl/glVertexArray.h
index 3594cbf..3790863 100644
--- a/gfx/gl/glVertexArray.h
+++ b/gfx/gl/glVertexArray.h
@@ -115,6 +115,17 @@ namespace Impl {
 		{
 			return VertexArrayConfigurator {name};
 		}
+
+		template<typename GlAllocated>
+		void
+		useBuffer(GLuint binding, const GlAllocated & buffer) const
+			requires requires {
+				{ buffer.bufferName() } -> std::same_as<GLuint>;
+			}
+		{
+			using T = typename GlAllocated::value_type;
+			glVertexArrayVertexBuffer(name, binding, buffer.bufferName(), 0, sizeof(T));
+		}
 	};
 }
 
diff --git a/gfx/gl/instanceVertices.h b/gfx/gl/instanceVertices.h
index f24eaa3..2643e68 100644
--- a/gfx/gl/instanceVertices.h
+++ b/gfx/gl/instanceVertices.h
@@ -126,6 +126,8 @@ public:
 		return base::get_allocator().getNameFor(static_cast<const base &>(*this));
 	}
 
+	using base::value_type;
+
 	using base::at;
 	using base::begin;
 	using base::cbegin;