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gallivm: Rudimentary native integer support.

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Just enough for draw module to work ok.

This improves "piglit attribs GL3", though something fishy is still
happening with certain unsigned integer values.

Reviewed-by: Brian Paul <brianp@vmware.com>
This commit is contained in:
José Fonseca 2012-12-04 19:06:54 +00:00
parent 6e27e2e90e
commit e7bbd9c243
2 changed files with 20 additions and 5 deletions
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4
src/gallium/auxiliary/gallivm/lp_bld_format_aos.c
View file

@ -234,7 +234,6 @@ lp_build_unpack_arith_rgba_aos(struct gallivm_state *gallivm,
shifted = LLVMBuildLShr(builder, packed, LLVMConstVector(shifts, 4), "");
masked = LLVMBuildAnd(builder, shifted, LLVMConstVector(masks, 4), "");
if (!needs_uitofp) {
/* UIToFP can't be expressed in SSE2 */
casted = LLVMBuildSIToFP(builder, masked, LLVMVectorType(LLVMFloatTypeInContext(gallivm->context), 4), "");
@ -438,7 +437,8 @@ lp_build_fetch_rgba_aos(struct gallivm_state *gallivm,
format_desc->is_bitmask &&
!format_desc->is_mixed &&
(format_desc->channel[0].type == UTIL_FORMAT_TYPE_UNSIGNED ||
format_desc->channel[1].type == UTIL_FORMAT_TYPE_UNSIGNED)) {
format_desc->channel[1].type == UTIL_FORMAT_TYPE_UNSIGNED) &&
!format_desc->channel[0].pure_integer) {
LLVMValueRef tmps[LP_MAX_VECTOR_LENGTH/4];
LLVMValueRef res;

21
src/gallium/auxiliary/gallivm/lp_bld_format_aos_array.c
View file

@ -113,6 +113,8 @@ lp_build_fetch_rgba_aos_array(struct gallivm_state *gallivm,
LLVMTypeRef src_vec_type;
LLVMValueRef ptr, res = NULL;
struct lp_type src_type;
boolean pure_integer = format_desc->channel[0].pure_integer;
struct lp_type tmp_type;
lp_type_from_format_desc(&src_type, format_desc);
@ -144,10 +146,23 @@ lp_build_fetch_rgba_aos_array(struct gallivm_state *gallivm,
src_type.length = dst_type.length;
}
tmp_type = dst_type;
if (pure_integer) {
assert(dst_type.floating);
tmp_type.floating = 0;
}
/* Convert to correct format */
lp_build_conv(gallivm, src_type, dst_type, &res, 1, &res, 1);
lp_build_conv(gallivm, src_type, tmp_type, &res, 1, &res, 1);
/* Swizzle it */
lp_build_context_init(&bld, gallivm, dst_type);
return lp_build_format_swizzle_aos(format_desc, &bld, res);
lp_build_context_init(&bld, gallivm, tmp_type);
res = lp_build_format_swizzle_aos(format_desc, &bld, res);
/* Bitcast to floats (for pure integers) */
if (pure_integer) {
res = LLVMBuildBitCast(builder, res, lp_build_vec_type(gallivm, dst_type), "");
}
return res;
}