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authorEric Anholt <eric@anholt.net>2014-12-15 11:25:23 -0800
committerEric Anholt <eric@anholt.net>2014-12-15 14:28:23 -0800
commit214a169b3268bed63785d3e5953b24022f1beccb (patch)
treecf86e4ff0512a7ffe693a82244e8345966973510 /src
parent1fa1ee56a042a4a50bebf91cea476b7fea491649 (diff)
vc4: Refactor vertex attribute conversions a bit.
There was just way too much indentation.
Diffstat (limited to 'src')
-rw-r--r--src/gallium/drivers/vc4/vc4_program.c65
1 files changed, 40 insertions, 25 deletions
diff --git a/src/gallium/drivers/vc4/vc4_program.c b/src/gallium/drivers/vc4/vc4_program.c
index 0bec265a798..fd9cd5e3471 100644
--- a/src/gallium/drivers/vc4/vc4_program.c
+++ b/src/gallium/drivers/vc4/vc4_program.c
@@ -986,6 +986,43 @@ tgsi_to_qir_uarl(struct vc4_compile *c,
return qir_SHL(c, src[0 * 4 + i], qir_uniform_ui(c, 4));
}
+static struct qreg
+get_channel_from_vpm(struct vc4_compile *c,
+ struct qreg *vpm_reads,
+ uint8_t swiz,
+ const struct util_format_description *desc)
+{
+ const struct util_format_channel_description *chan =
+ &desc->channel[swiz];
+ struct qreg temp;
+
+ if (swiz > UTIL_FORMAT_SWIZZLE_W)
+ return get_swizzled_channel(c, vpm_reads, swiz);
+ else if (chan->size == 32 &&
+ chan->type == UTIL_FORMAT_TYPE_FLOAT) {
+ return get_swizzled_channel(c, vpm_reads, swiz);
+ } else if (chan->size == 8 &&
+ (chan->type == UTIL_FORMAT_TYPE_UNSIGNED ||
+ chan->type == UTIL_FORMAT_TYPE_SIGNED) &&
+ chan->normalized) {
+ struct qreg vpm = vpm_reads[0];
+ if (chan->type == UTIL_FORMAT_TYPE_SIGNED)
+ vpm = qir_XOR(c, vpm, qir_uniform_ui(c, 0x80808080));
+ temp = qir_UNPACK_8_F(c, vpm, swiz);
+
+ if (chan->type == UTIL_FORMAT_TYPE_SIGNED) {
+ return qir_FSUB(c, qir_FMUL(c,
+ temp,
+ qir_uniform_f(c, 2.0)),
+ qir_uniform_f(c, 1.0));
+ } else {
+ return temp;
+ }
+ } else {
+ return c->undef;
+ }
+}
+
static void
emit_vertex_input(struct vc4_compile *c, int attr)
{
@@ -1010,22 +1047,10 @@ emit_vertex_input(struct vc4_compile *c, int attr)
for (int i = 0; i < 4; i++) {
uint8_t swiz = desc->swizzle[i];
- struct qreg result;
+ struct qreg result = get_channel_from_vpm(c, vpm_reads,
+ swiz, desc);
- if (swiz > UTIL_FORMAT_SWIZZLE_W)
- result = get_swizzled_channel(c, vpm_reads, swiz);
- else if (desc->channel[swiz].size == 32 &&
- desc->channel[swiz].type == UTIL_FORMAT_TYPE_FLOAT) {
- result = get_swizzled_channel(c, vpm_reads, swiz);
- } else if (desc->channel[swiz].size == 8 &&
- (desc->channel[swiz].type == UTIL_FORMAT_TYPE_UNSIGNED ||
- desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED) &&
- desc->channel[swiz].normalized) {
- struct qreg vpm = vpm_reads[0];
- if (desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED)
- vpm = qir_XOR(c, vpm, qir_uniform_ui(c, 0x80808080));
- result = qir_UNPACK_8_F(c, vpm, swiz);
- } else {
+ if (result.file == QFILE_NULL) {
if (!format_warned) {
fprintf(stderr,
"vtx element %d unsupported type: %s\n",
@@ -1034,16 +1059,6 @@ emit_vertex_input(struct vc4_compile *c, int attr)
}
result = qir_uniform_f(c, 0.0);
}
-
- if (desc->channel[swiz].normalized &&
- desc->channel[swiz].type == UTIL_FORMAT_TYPE_SIGNED) {
- result = qir_FSUB(c,
- qir_FMUL(c,
- result,
- qir_uniform_f(c, 2.0)),
- qir_uniform_f(c, 1.0));
- }
-
c->inputs[attr * 4 + i] = result;
}
}