[Mesa-dev] [PATCH 1/6] gallivm: (trivial) handle non-aligned fetch for lp_build_fetch_rgba_soa
sroland at vmware.com
sroland at vmware.com
Mon Dec 12 00:11:57 UTC 2016
From: Roland Scheidegger <sroland at vmware.com>
soa fetch so far always assumed that data was aligned. However, we want to
use this for vertex fetch, and data might not be aligned there, so handle
it in this path too (basically just pass through alignment through to other
functions). (It looks like it wouldn't work for for cached s3tc but this is
no different than with AoS fetch.)
---
src/gallium/auxiliary/gallivm/lp_bld_format.h | 1 +
src/gallium/auxiliary/gallivm/lp_bld_format_soa.c | 15 +++++++++------
src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c | 4 ++--
3 files changed, 12 insertions(+), 8 deletions(-)
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format.h b/src/gallium/auxiliary/gallivm/lp_bld_format.h
index 5c866f4..6540caa 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_format.h
+++ b/src/gallium/auxiliary/gallivm/lp_bld_format.h
@@ -143,6 +143,7 @@ void
lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
const struct util_format_description *format_desc,
struct lp_type type,
+ boolean aligned,
LLVMValueRef base_ptr,
LLVMValueRef offsets,
LLVMValueRef i,
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
index 7444c51..389bfa0 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_format_soa.c
@@ -349,6 +349,7 @@ lp_build_rgba8_to_fi32_soa(struct gallivm_state *gallivm,
*
* \param type the desired return type for 'rgba'. The vector length
* is the number of texels to fetch
+ * \param aligned if the offset is guaranteed to be aligned to element width
*
* \param base_ptr points to the base of the texture mip tree.
* \param offset offset to start of the texture image block. For non-
@@ -365,6 +366,7 @@ void
lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
const struct util_format_description *format_desc,
struct lp_type type,
+ boolean aligned,
LLVMValueRef base_ptr,
LLVMValueRef offset,
LLVMValueRef i,
@@ -402,7 +404,7 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
type.length,
format_desc->block.bits,
type.width,
- TRUE,
+ aligned,
base_ptr, offset, FALSE);
/*
@@ -428,7 +430,7 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
packed = lp_build_gather(gallivm, type.length,
format_desc->block.bits,
- type.width, TRUE,
+ type.width, aligned,
base_ptr, offset, FALSE);
if (format_desc->format == PIPE_FORMAT_R11G11B10_FLOAT) {
lp_build_r11g11b10_to_float(gallivm, packed, rgba_out);
@@ -456,14 +458,14 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
LLVMValueRef s_offset = lp_build_const_int_vec(gallivm, type, 4);
offset = LLVMBuildAdd(builder, offset, s_offset, "");
packed = lp_build_gather(gallivm, type.length, 32, type.width,
- TRUE, base_ptr, offset, FALSE);
+ aligned, base_ptr, offset, FALSE);
packed = LLVMBuildAnd(builder, packed,
lp_build_const_int_vec(gallivm, type, mask), "");
}
else {
assert (format_desc->format == PIPE_FORMAT_Z32_FLOAT_S8X24_UINT);
packed = lp_build_gather(gallivm, type.length, 32, type.width,
- TRUE, base_ptr, offset, TRUE);
+ aligned, base_ptr, offset, TRUE);
packed = LLVMBuildBitCast(builder, packed,
lp_build_vec_type(gallivm, type), "");
}
@@ -489,7 +491,7 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
tmp_type.norm = TRUE;
tmp = lp_build_fetch_rgba_aos(gallivm, format_desc, tmp_type,
- TRUE, base_ptr, offset, i, j, cache);
+ aligned, base_ptr, offset, i, j, cache);
lp_build_rgba8_to_fi32_soa(gallivm,
type,
@@ -509,6 +511,7 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
const struct util_format_description *flinear_desc;
LLVMValueRef packed;
flinear_desc = util_format_description(util_format_linear(format_desc->format));
+ /* This probably only works with aligned data */
packed = lp_build_fetch_cached_texels(gallivm,
flinear_desc,
type.length,
@@ -572,7 +575,7 @@ lp_build_fetch_rgba_soa(struct gallivm_state *gallivm,
/* Get a single float[4]={R,G,B,A} pixel */
tmp = lp_build_fetch_rgba_aos(gallivm, format_desc, tmp_type,
- TRUE, base_ptr, offset_elem,
+ aligned, base_ptr, offset_elem,
i_elem, j_elem, cache);
/*
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
index 939cd43..161a03f 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_sample_soa.c
@@ -159,7 +159,7 @@ lp_build_sample_texel_soa(struct lp_build_sample_context *bld,
lp_build_fetch_rgba_soa(bld->gallivm,
bld->format_desc,
- bld->texel_type,
+ bld->texel_type, TRUE,
data_ptr, offset,
i, j,
bld->cache,
@@ -2406,7 +2406,7 @@ lp_build_fetch_texel(struct lp_build_sample_context *bld,
lp_build_fetch_rgba_soa(bld->gallivm,
bld->format_desc,
- bld->texel_type,
+ bld->texel_type, TRUE,
bld->base_ptr, offset,
i, j,
bld->cache,
--
2.7.4
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