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meta: Use GL_STREAM_READ for pbo created with GL_PIXEL_PACK_BUFFER

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create_texture_for_pbo() is used by both _mesa_meta_pbo_GetTexSubImage()
and _mesa_meta_pbo_TexSubImage() functions with different PBO targets.
Use GL_STREAM_READ with GL_PIXEL_PACK_BUFFER and GL_STREAM_DRAW with
GL_PIXEL_UNPACK_BUFFER.

Signed-off-by: Anuj Phogat <anuj.phogat@gmail.com>
Reviewed-by: Neil Roberts <neil@linux.intel.com>
This commit is contained in:
Anuj Phogat 2015-02-03 16:50:57 -08:00
parent 8d6ae49a8b
commit 618c4c4b6a
1 changed files with 7 additions and 1 deletions
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8
src/mesa/drivers/common/meta_tex_subimage.c
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@ -79,6 +79,7 @@ create_texture_for_pbo(struct gl_context *ctx, bool create_pbo,
buffer_obj = packing->BufferObj;
} else {
assert(create_pbo);
bool is_pixel_pack = pbo_target == GL_PIXEL_PACK_BUFFER;
_mesa_GenBuffers(1, tmp_pbo);
@ -88,7 +89,12 @@ create_texture_for_pbo(struct gl_context *ctx, bool create_pbo,
*/
_mesa_BindBuffer(pbo_target, *tmp_pbo);
_mesa_BufferData(pbo_target, row_stride * height, pixels, GL_STREAM_DRAW);
if (is_pixel_pack)
_mesa_BufferData(pbo_target, row_stride * height, pixels,
GL_STREAM_READ);
else
_mesa_BufferData(pbo_target, row_stride * height, pixels,
GL_STREAM_DRAW);
buffer_obj = ctx->Unpack.BufferObj;
pixels = NULL;