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-rw-r--r--src/mesa/vbo/vbo_exec_draw.c28
1 files changed, 19 insertions, 9 deletions
diff --git a/src/mesa/vbo/vbo_exec_draw.c b/src/mesa/vbo/vbo_exec_draw.c
index c939b7b6335..5442a409ad4 100644
--- a/src/mesa/vbo/vbo_exec_draw.c
+++ b/src/mesa/vbo/vbo_exec_draw.c
@@ -282,9 +282,14 @@ void
vbo_exec_vtx_map( struct vbo_exec_context *exec )
{
GLcontext *ctx = exec->ctx;
- GLenum target = GL_ARRAY_BUFFER_ARB;
- GLenum access = GL_READ_WRITE_ARB;
- GLenum usage = GL_STREAM_DRAW_ARB;
+ const GLenum target = GL_ARRAY_BUFFER_ARB;
+ const GLenum access = GL_READ_WRITE_ARB; /* for MapBuffer */
+ const GLenum accessRange = GL_MAP_WRITE_BIT | /* for MapBufferRange */
+ GL_MAP_INVALIDATE_RANGE_BIT |
+ GL_MAP_UNSYNCHRONIZED_BIT |
+ GL_MAP_FLUSH_EXPLICIT_BIT |
+ MESA_MAP_NOWAIT_BIT;
+ const GLenum usage = GL_STREAM_DRAW_ARB;
if (exec->vtx.bufferobj->Name == 0)
return;
@@ -303,10 +308,7 @@ vbo_exec_vtx_map( struct vbo_exec_context *exec )
exec->vtx.buffer_used,
(VBO_VERT_BUFFER_SIZE -
exec->vtx.buffer_used),
- (GL_MAP_WRITE_BIT |
- GL_MAP_INVALIDATE_RANGE_BIT |
- GL_MAP_UNSYNCHRONIZED_BIT |
- MESA_MAP_NOWAIT_BIT),
+ accessRange,
exec->vtx.bufferobj);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}
@@ -318,8 +320,16 @@ vbo_exec_vtx_map( struct vbo_exec_context *exec )
VBO_VERT_BUFFER_SIZE,
NULL, usage, exec->vtx.bufferobj);
- exec->vtx.buffer_map = (GLfloat *)
- ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
+
+ if (ctx->Driver.MapBufferRange)
+ exec->vtx.buffer_map =
+ (GLfloat *)ctx->Driver.MapBufferRange(ctx, target,
+ 0, VBO_VERT_BUFFER_SIZE,
+ accessRange,
+ exec->vtx.bufferobj);
+ else
+ exec->vtx.buffer_map =
+ (GLfloat *)ctx->Driver.MapBuffer(ctx, target, access, exec->vtx.bufferobj);
exec->vtx.buffer_ptr = exec->vtx.buffer_map;
}