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vc4: Extract the swizzle handling from vertex fetch.

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I want to reuse this elsewhere, and NONE debug output hasn't been useful
so I don't miss it being as detailed as it was before.
This commit is contained in:
Eric Anholt 2014-08-18 11:18:10 -07:00
parent c1db622215
commit 37992a4e39
1 changed files with 32 additions and 27 deletions
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59
src/gallium/drivers/vc4/vc4_program.c
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@ -210,6 +210,27 @@ update_dst(struct tgsi_to_qir *trans, struct tgsi_full_instruction *tgsi_inst,
}
};
static struct qreg
get_swizzled_channel(struct tgsi_to_qir *trans,
struct qreg *srcs, int swiz)
{
switch (swiz) {
default:
case UTIL_FORMAT_SWIZZLE_NONE:
fprintf(stderr, "warning: unknown swizzle\n");
/* FALLTHROUGH */
case UTIL_FORMAT_SWIZZLE_0:
return qir_uniform_f(trans, 0.0);
case UTIL_FORMAT_SWIZZLE_1:
return qir_uniform_f(trans, 1.0);
case UTIL_FORMAT_SWIZZLE_X:
case UTIL_FORMAT_SWIZZLE_Y:
case UTIL_FORMAT_SWIZZLE_Z:
case UTIL_FORMAT_SWIZZLE_W:
return srcs[swiz];
}
}
static struct qreg
tgsi_to_qir_alu(struct tgsi_to_qir *trans,
struct tgsi_full_instruction *tgsi_inst,
@ -557,34 +578,18 @@ emit_vertex_input(struct tgsi_to_qir *trans, int attr)
for (int i = 0; i < 4; i++) {
uint8_t swiz = desc->swizzle[i];
switch (swiz) {
case UTIL_FORMAT_SWIZZLE_NONE:
if (!format_warned) {
fprintf(stderr,
"vtx element %d NONE swizzle: %s\n",
attr, util_format_name(format));
format_warned = true;
}
/* FALLTHROUGH */
case UTIL_FORMAT_SWIZZLE_0:
trans->inputs[attr * 4 + i] = qir_uniform_f(trans, 0.0);
break;
case UTIL_FORMAT_SWIZZLE_1:
trans->inputs[attr * 4 + i] = qir_uniform_f(trans, 1.0);
break;
default:
if (!format_warned &&
(desc->channel[swiz].type != UTIL_FORMAT_TYPE_FLOAT ||
desc->channel[swiz].size != 32)) {
fprintf(stderr,
"vtx element %d unsupported type: %s\n",
attr, util_format_name(format));
format_warned = true;
}
trans->inputs[attr * 4 + i] = vpm_reads[swiz];
break;
if (swiz <= UTIL_FORMAT_SWIZZLE_W &&
!format_warned &&
(desc->channel[swiz].type != UTIL_FORMAT_TYPE_FLOAT ||
desc->channel[swiz].size != 32)) {
fprintf(stderr,
"vtx element %d unsupported type: %s\n",
attr, util_format_name(format));
format_warned = true;
}
trans->inputs[attr * 4 + i] =
get_swizzled_channel(trans, vpm_reads, swiz);
}
}