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On 07/25/2011 01:23 PM, Henri Verbeet wrote:
> Without this we'd miss an update when doing a sequence like {COLOR0, COLOR1},
> {COLOR0}, {COLOR0, COLOR1}.
Is there a piglit test to reproduce this failure?
> NOTE: This is a candidate for the 7.10 and 7.11 branches.
>
> Signed-off-by: Henri Verbeet <[email protected]>
> ---
> src/mesa/main/buffers.c | 5 ++++-
> 1 files changed, 4 insertions(+), 1 deletions(-)
>
> diff --git a/src/mesa/main/buffers.c b/src/mesa/main/buffers.c
> index a75c9c2..88fe0b1 100644
> --- a/src/mesa/main/buffers.c
> +++ b/src/mesa/main/buffers.c
> @@ -445,7 +445,10 @@ _mesa_drawbuffers(struct gl_context *ctx, GLuint n,
> const GLenum *buffers,
> fb->ColorDrawBuffer[buf] = GL_NONE;
> buf++;
> }
> - fb->_NumColorDrawBuffers = count;
> + if (fb->_NumColorDrawBuffers != count) {
> + updated_drawbuffers(ctx);
> + fb->_NumColorDrawBuffers = count;
> + }
> }
>
> if (fb->Name == 0) {
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