[Mesa-dev] [PATCH 4/4] radeonsi: Enable whole quad for pixel shaders.

[Tom Stellard]

On Thu, Sep 06, 2012 at 01:00:03PM +0200, Michel Dänzer wrote:
> From: Michel Dänzer <michel.daenzer at amd.com>
> 
> Fixes wrong mipmap level being sampled at some triangle edges.
> 
> Signed-off-by: Michel Dänzer <michel.daenzer at amd.com>
Reviewed-by: Tom Stellard <thomas.stellard at amd.com>
> ---
>  src/gallium/drivers/radeonsi/radeonsi_shader.c |   12 ++++++++++--
>  1 file changed, 10 insertions(+), 2 deletions(-)
> 
> diff --git a/src/gallium/drivers/radeonsi/radeonsi_shader.c b/src/gallium/drivers/radeonsi/radeonsi_shader.c
> index 8c92149..1c330b5 100644
> --- a/src/gallium/drivers/radeonsi/radeonsi_shader.c
> +++ b/src/gallium/drivers/radeonsi/radeonsi_shader.c
> @@ -75,7 +75,7 @@ struct si_shader_context
>  	struct tgsi_token * tokens;
>  	struct si_pipe_shader *shader;
>  	unsigned type; /* TGSI_PROCESSOR_* specifies the type of shader. */
> -/*	unsigned num_inputs; */
> +	unsigned ninput_emitted;
>  /*	struct list_head inputs; */
>  /*	unsigned * input_mappings *//* From TGSI to SI hw */
>  /*	struct tgsi_shader_info info;*/
> @@ -319,6 +319,14 @@ static void declare_input_fs(
>  		return;
>  	}
>  
> +	if (!si_shader_ctx->ninput_emitted++) {
> +		/* Enable whole quad mode */
> +		lp_build_intrinsic(gallivm->builder,
> +				   "llvm.SI.wqm",
> +				   LLVMVoidTypeInContext(gallivm->context),
> +				   NULL, 0);
> +	}
> +
>  	/* XXX: Could there be more than TGSI_NUM_CHANNELS (4) ? */
>  	for (chan = 0; chan < TGSI_NUM_CHANNELS; chan++) {
>  		LLVMValueRef args[3];
> @@ -689,7 +697,7 @@ int si_pipe_shader_create(
>  
>  	dump = debug_get_bool_option("RADEON_DUMP_SHADERS", FALSE);
>  
> -	memset(&si_shader_ctx.radeon_bld, 0, sizeof(si_shader_ctx.radeon_bld));
> +	memset(&si_shader_ctx, 0, sizeof(si_shader_ctx));
>  	radeon_llvm_context_init(&si_shader_ctx.radeon_bld);
>  	bld_base = &si_shader_ctx.radeon_bld.soa.bld_base;
>  
> -- 
> 1.7.10.4
> 
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