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radeonsi: fix array textures layer coordinate

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Like for cube map (array) gather, we need to round to nearest on <= VI.

Fixes tests in dEQP-GLES3.functional.shaders.texture_functions.texture.*

Cc: mesa-stable@lists.freedesktop.org
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
(cherry picked from commit 87f7c7bd65)
[Juan A. Suarez: apply patch over si_shader.c]
Signed-off-by: Juan A. Suarez Romero <jasuarez@igalia.com>

Conflicts:
	src/gallium/drivers/radeonsi/si_shader_tgsi_mem.c
This commit is contained in:
Nicolai Hähnle 2017-09-17 16:00:38 +02:00 • committed by Juan A. Suarez Romero
parent 96f815aeab
commit 0ec2f628d1
1 changed files with 10 additions and 1 deletions
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11
src/gallium/drivers/radeonsi/si_shader.c
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@ -4655,13 +4655,22 @@ static void tex_fetch_args(
if (target == TGSI_TEXTURE_CUBE ||
target == TGSI_TEXTURE_CUBE_ARRAY ||
target == TGSI_TEXTURE_SHADOWCUBE ||
target == TGSI_TEXTURE_SHADOWCUBE_ARRAY)
target == TGSI_TEXTURE_SHADOWCUBE_ARRAY) {
ac_prepare_cube_coords(&ctx->ac,
opcode == TGSI_OPCODE_TXD,
target == TGSI_TEXTURE_CUBE_ARRAY ||
target == TGSI_TEXTURE_SHADOWCUBE_ARRAY,
opcode == TGSI_OPCODE_LODQ,
coords, derivs);
} else if (tgsi_is_array_sampler(target) &&
opcode != TGSI_OPCODE_TXF &&
opcode != TGSI_OPCODE_TXF_LZ &&
ctx->screen->b.chip_class <= VI) {
unsigned array_coord = target == TGSI_TEXTURE_1D_ARRAY ? 1 : 2;
coords[array_coord] =
ac_build_intrinsic(&ctx->ac, "llvm.rint.f32", ctx->f32,
&coords[array_coord], 1, 0);
}
if (opcode == TGSI_OPCODE_TXD)
for (int i = 0; i < num_deriv_channels * 2; i++)