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mesa/st: implement MapBufferRange callback

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Using PIPE_BUFFER_USAGE_DONTBLOCK.
This commit is contained in:
Keith Whitwell
2009-03-03 10:47:31 +00:00
parent c4d1f4607a
commit 2e29b7d0f8
1 changed files with 34 additions and 1 deletions
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src/mesa/state_tracker/st_cb_bufferobjects.c
+34 -1
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@@ -212,8 +212,40 @@ st_bufferobj_map(GLcontext *ctx, GLenum target, GLenum access,
}
/**
* Called via glMapBufferARB().
* Called via glMapBufferRange().
*/
static void *
st_bufferobj_map_range(GLcontext *ctx, GLenum target,
GLintptr offset, GLsizeiptr length, GLbitfield access,
struct gl_buffer_object *obj)
{
struct pipe_context *pipe = st_context(ctx)->pipe;
struct st_buffer_object *st_obj = st_buffer_object(obj);
GLuint flags = 0;
if (access & GL_MAP_WRITE_BIT)
flags |= PIPE_BUFFER_USAGE_CPU_WRITE;
if (access & GL_MAP_READ_BIT)
flags |= PIPE_BUFFER_USAGE_CPU_READ;
/* ... other flags ...
*/
if (access & MESA_MAP_NOWAIT_BIT)
flags |= PIPE_BUFFER_USAGE_DONTBLOCK;
obj->Pointer = pipe_buffer_map(pipe->screen, st_obj->buffer, flags);
return obj->Pointer;
}
/**
* Called via glUnmapBufferARB().
*/
static GLboolean
st_bufferobj_unmap(GLcontext *ctx, GLenum target, struct gl_buffer_object *obj)
@@ -236,5 +268,6 @@ st_init_bufferobject_functions(struct dd_function_table *functions)
functions->BufferSubData = st_bufferobj_subdata;
functions->GetBufferSubData = st_bufferobj_get_subdata;
functions->MapBuffer = st_bufferobj_map;
functions->MapBufferRange = st_bufferobj_map_range;
functions->UnmapBuffer = st_bufferobj_unmap;
}