I am confused by the warning:
“GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.”
Presently I am using a persistently mapped buffer for staging index/vertex data to be uploaded to a large intended to be GPU side vertex and index buffer. I am using the same staging buffer for index and vertex data.
As far as I understand it if I fill these staging buffers that are allocated in ‘fast’ CPU->GPU memory and then issue glCopyBufferSubData() to my final video memory allocated buffers for drawing this shouldn’t be happening?
Full debug spew is below. Where buffers 3 & 4 are intended to be the destination GPU index/vertex buffers used for rendering. (Also I understand the pixel path warning is because I am not using PBO’s yet).
Buffer detailed info: Buffer object 1 (bound to GL_DRAW_INDIRECT_BUFFER, usage hint is GL_DYNAMIC_DRAW) will use SYSTEM HEAP memory as the source for buffer object operations.
Buffer detailed info: Buffer object 1 (bound to GL_DRAW_INDIRECT_BUFFER, usage hint is GL_DYNAMIC_DRAW) has been mapped WRITE_ONLY in SYSTEM HEAP memory (fast).
Buffer detailed info: Buffer object 2 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) will use SYSTEM HEAP memory as the source for buffer object operations.
Buffer detailed info: Buffer object 2 (bound to GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) has been mapped WRITE_ONLY in SYSTEM HEAP memory (fast).
Buffer detailed info: Buffer object 5 (bound to GL_COPY_READ_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use SYSTEM HEAP memory as the source for buffer object operations.
Buffer detailed info: Buffer object 5 (bound to GL_COPY_READ_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) has been mapped WRITE_ONLY in SYSTEM HEAP memory (fast).
Buffer detailed info: Buffer object 5 (bound to GL_COPY_READ_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use SYSTEM HEAP memory as the source for buffer object operations.
Buffer detailed info: Buffer object 4 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, and GL_COPY_WRITE_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.
Buffer detailed info: Buffer object 4 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, and GL_COPY_WRITE_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.
Buffer detailed info: Buffer object 5 (bound to GL_COPY_READ_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use SYSTEM HEAP memory as the source for buffer object operations.
Buffer detailed info: Buffer object 3 (bound to GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (0), GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (1), GL_ARRAY_BUFFER_ARB, and GL_COPY_WRITE_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.
Buffer detailed info: Buffer object 3 (bound to GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (0), GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (1), GL_ARRAY_BUFFER_ARB, and GL_COPY_WRITE_BUFFER_BINDING_EXT, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.
Pixel-path performance warning: Pixel transfer is synchronized with 3D rendering.
Buffer performance warning: Buffer object 3 (bound to GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (0), GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (1), and GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.
Buffer detailed info: Buffer object 3 (bound to GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (0), GL_VERTEX_ATTRIB_ARRAY_BUFFER_BINDING_ARB (1), and GL_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.
Buffer performance warning: Buffer object 4 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) is being copied/moved from VIDEO memory to HOST memory.
Buffer detailed info: Buffer object 4 (bound to GL_ELEMENT_ARRAY_BUFFER_ARB, usage hint is GL_DYNAMIC_DRAW) will use VIDEO memory as the source for buffer object operations.