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pan/bi: Allow vertex txl with lod=0 as compact

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Signed-off-by: Alyssa Rosenzweig <alyssa.rosenzweig@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5232>
This commit is contained in:
Alyssa Rosenzweig
2020-05-27 11:41:42 -04:00
parent fd0324a1ce
commit 731dfc6066
1 changed files with 29 additions and 1 deletions
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30
src/panfrost/bifrost/bifrost_compile.c
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@@ -900,6 +900,34 @@ emit_tex_full(bi_context *ctx, nir_tex_instr *instr)
unreachable("stub");
}
/* Normal textures ops are tex for frag shaders and txl for vertex shaders with
* lod a constant 0. Anything else needs a full texture op. */
static bool
bi_is_normal_tex(gl_shader_stage stage, nir_tex_instr *instr)
{
if (stage == MESA_SHADER_FRAGMENT)
return instr->op == nir_texop_tex;
if (instr->op != nir_texop_txl)
return false;
for (unsigned i = 0; i < instr->num_srcs; ++i) {
if (instr->src[i].src_type != nir_tex_src_lod)
continue;
nir_src src = instr->src[i].src;
if (!nir_src_is_const(src))
continue;
if (nir_src_as_uint(src) != 0)
continue;
}
return true;
}
static void
emit_tex(bi_context *ctx, nir_tex_instr *instr)
{
@@ -907,7 +935,7 @@ emit_tex(bi_context *ctx, nir_tex_instr *instr)
unsigned sz = nir_dest_bit_size(instr->dest);
instr->dest_type = base | sz;
bool is_normal = instr->op == nir_texop_tex;
bool is_normal = bi_is_normal_tex(ctx->stage, instr);
bool is_2d = instr->sampler_dim == GLSL_SAMPLER_DIM_2D ||
instr->sampler_dim == GLSL_SAMPLER_DIM_EXTERNAL;
bool is_f = base == nir_type_float && (sz == 16 || sz == 32);