Reviewed-by: Ian Romanick <ian.d.roman...@intel.com>
On 02/12/2015 11:29 PM, Iago Toral Quiroga wrote:
> We need to swizzle the rhs to match the number of components in the writemask,
> otherwise we'll hit an assertion in ir_assignment.
> ---
> src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp | 4 +++-
> 1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
> b/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
> index 878a54e..7a5f983 100644
> --- a/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
> +++ b/src/mesa/drivers/dri/i965/brw_lower_texture_gradients.cpp
> @@ -123,7 +123,9 @@ lower_texture_grad_visitor::visit_leave(ir_texture *ir)
> new(mem_ctx) ir_variable(grad_type, "size", ir_var_temporary);
> if (ir->sampler->type->sampler_dimensionality == GLSL_SAMPLER_DIM_CUBE) {
> base_ir->insert_before(size);
> - base_ir->insert_before(assign(size, expr(ir_unop_i2f, txs),
> WRITEMASK_XY));
> + base_ir->insert_before(assign(size,
> + swizzle_for_size(expr(ir_unop_i2f, txs),
> 2),
> + WRITEMASK_XY));
> base_ir->insert_before(assign(size, new(mem_ctx) ir_constant(1.0f),
> WRITEMASK_Z));
> } else {
> emit(size, expr(ir_unop_i2f,
>
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