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vc4: Add support for 32-bit signed norm/scaled vertex attrs.

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32-bit unsigned would require some adjustments to handle values >=
0x80000000.
This commit is contained in:
Eric Anholt
2014-12-15 12:37:42 -08:00
parent 48a2154520
commit 1b486b52ac
2 changed files with 18 additions and 0 deletions
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src/gallium/drivers/vc4/vc4_program.c
+10
View File
@@ -1001,6 +1001,16 @@ get_channel_from_vpm(struct vc4_compile *c,
else if (chan->size == 32 &&
chan->type == UTIL_FORMAT_TYPE_FLOAT) {
return get_swizzled_channel(c, vpm_reads, swiz);
} else if (chan->size == 32 &&
chan->type == UTIL_FORMAT_TYPE_SIGNED) {
if (chan->normalized) {
return qir_FMUL(c,
qir_ITOF(c, vpm_reads[swiz]),
qir_uniform_f(c,
1.0 / 0x7fffffff));
} else {
return qir_ITOF(c, vpm_reads[swiz]);
}
} else if (chan->size == 8 &&
(chan->type == UTIL_FORMAT_TYPE_UNSIGNED ||
chan->type == UTIL_FORMAT_TYPE_SIGNED)) {
src/gallium/drivers/vc4/vc4_screen.c
+8
View File
@@ -346,6 +346,14 @@ vc4_screen_is_format_supported(struct pipe_screen *pscreen,
case PIPE_FORMAT_R32G32B32_FLOAT:
case PIPE_FORMAT_R32G32_FLOAT:
case PIPE_FORMAT_R32_FLOAT:
case PIPE_FORMAT_R32G32B32A32_SNORM:
case PIPE_FORMAT_R32G32B32_SNORM:
case PIPE_FORMAT_R32G32_SNORM:
case PIPE_FORMAT_R32_SNORM:
case PIPE_FORMAT_R32G32B32A32_SSCALED:
case PIPE_FORMAT_R32G32B32_SSCALED:
case PIPE_FORMAT_R32G32_SSCALED:
case PIPE_FORMAT_R32_SSCALED:
case PIPE_FORMAT_R16G16B16A16_UNORM:
case PIPE_FORMAT_R16G16B16_UNORM:
case PIPE_FORMAT_R16G16_UNORM: