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pan/midgard: Account for z/w flip in texelFetch

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Required for proper txf of 2D arrays.

Fixes dEQP-GLES3.functional.shaders.texture_functions.texelfetch.*2darray*

Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Reviewed-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
This commit is contained in:
Alyssa Rosenzweig
2020-01-06 21:31:46 -05:00
committed by Tomeu Vizoso
parent 4152d45d38
commit bc4c853b49
1 changed files with 9 additions and 0 deletions
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src/panfrost/midgard/midgard_compile.c
+9
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@@ -1784,6 +1784,11 @@ emit_texop_native(compiler_context *ctx, nir_tex_instr *instr,
unsigned coord_mask = mask_of(instr->coord_components);
bool flip_zw = (instr->sampler_dim == GLSL_SAMPLER_DIM_2D) && (coord_mask & (1 << COMPONENT_Z));
if (flip_zw)
coord_mask ^= ((1 << COMPONENT_Z) | (1 << COMPONENT_W));
if (instr->sampler_dim == GLSL_SAMPLER_DIM_CUBE) {
/* texelFetch is undefined on samplerCube */
assert(midgard_texop != TEXTURE_OP_TEXEL_FETCH);
@@ -1806,6 +1811,10 @@ emit_texop_native(compiler_context *ctx, nir_tex_instr *instr,
/* mov coord_temp, coords */
midgard_instruction mov = v_mov(index, coords);
mov.mask = coord_mask;
if (flip_zw)
mov.swizzle[1][COMPONENT_W] = COMPONENT_Z;
emit_mir_instruction(ctx, mov);
} else {
coords = index;