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v3d: Force sampling from base level for tg4.

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This is what the GLSL ES 310 spec tells us to do, but apparently the
"gather mode" flag doesn't imply it in the HW.  Fixes
dEQP-GLES31.functional.texture.gather.basic.2d.rgba8.filter_mode.min_nearest_mipmap_linear_mag_linear
This commit is contained in:
Eric Anholt 2018-12-26 23:15:30 -08:00
parent f9bdce9966
commit 47caefc7b4
1 changed files with 3 additions and 3 deletions
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6
src/broadcom/compiler/v3d40_tex.c
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@ -78,6 +78,8 @@ v3d40_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr)
.gather_component = instr->component,
.coefficient_mode = instr->op == nir_texop_txd,
.disable_autolod = instr->op == nir_texop_tg4
};
int non_array_components = instr->coord_components - instr->is_array;
@ -119,10 +121,8 @@ v3d40_vir_emit_tex(struct v3d_compile *c, nir_tex_instr *instr)
ntq_get_src(c, instr->src[i].src, 0),
&tmu_writes);
if (instr->op != nir_texop_txf &&
instr->op != nir_texop_tg4) {
if (instr->op != nir_texop_txf)
p2_unpacked.disable_autolod = true;
}
break;
case nir_tex_src_comparator: