[Mesa-dev] [Mesa-stable] [PATCH 2/2] meta: Write color values in to 'out' variables for all the draw buffers

[Chris Forbes]

On Tue, May 20, 2014 at 8:20 AM, Anuj Phogat <anuj.phogat at gmail.com> wrote:
> @@ -247,7 +247,8 @@ _mesa_meta_setup_blit_shader(struct gl_context *ctx,
>     struct blit_shader *shader = choose_blit_shader(target, table);
>     const char *vs_input, *vs_output, *fs_input, *fs_output;
>     const char *vs_preprocess = "", *fs_preprocess = "";
> -   const char *fs_output_decl = "";
> +   const char *fs_output_decl = "", *for_loop = "";
> +   const int draw_buf_count = ctx->DrawBuffer->_NumColorDrawBuffers;

You can't depend on the number of bound draw buffers here. These
shaders get generated on first use, and cached for the life of the
context.