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-rw-r--r--src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c57
1 files changed, 34 insertions, 23 deletions
diff --git a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
index 05f63526ee5..e0c39561939 100644
--- a/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
+++ b/src/gallium/auxiliary/gallivm/lp_bld_tgsi_soa.c
@@ -460,6 +460,38 @@ build_gather(struct lp_build_tgsi_soa_context *bld,
/**
+ * Read the current value of the ADDR register, convert the floats to
+ * ints, multiply by four and return the vector of offsets.
+ * The offsets will be used to index into the constant buffer or
+ * temporary register file.
+ */
+static LLVMValueRef
+get_indirect_offsets(struct lp_build_tgsi_soa_context *bld,
+ const struct tgsi_src_register *indirect_reg)
+{
+ /* always use X component of address register */
+ const int x = indirect_reg->SwizzleX;
+ LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type);
+ uint swizzle = tgsi_util_get_src_register_swizzle(indirect_reg, x);
+ LLVMValueRef vec4 = lp_build_const_int_vec(bld->int_bld.type, 4);
+ LLVMValueRef addr_vec;
+
+ addr_vec = LLVMBuildLoad(bld->base.builder,
+ bld->addr[indirect_reg->Index][swizzle],
+ "load addr reg");
+
+ /* for indexing we want integers */
+ addr_vec = LLVMBuildFPToSI(bld->base.builder, addr_vec,
+ int_vec_type, "");
+
+ /* addr_vec = addr_vec * 4 */
+ addr_vec = lp_build_mul(&bld->base, addr_vec, vec4);
+
+ return addr_vec;
+}
+
+
+/**
* Register fetch.
*/
static LLVMValueRef
@@ -481,29 +513,7 @@ emit_fetch(
}
if (reg->Register.Indirect) {
- /*
- * Compute addr_vec: a vector of offsets into the register file
- * from which we need to gather elements. Recall that the ADDR
- * register's elements can all be different.
- */
-
- LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type);
- unsigned swizzle = tgsi_util_get_src_register_swizzle( &reg->Indirect, chan_index );
-
- LLVMValueRef vec4 = lp_build_const_int_vec(bld->int_bld.type, 4);
-
- assert(bld->has_indirect_addressing);
-
- addr_vec = LLVMBuildLoad(bld->base.builder,
- bld->addr[reg->Indirect.Index][swizzle],
- "load addr");
-
- /* for indexing we want integers */
- addr_vec = LLVMBuildFPToSI(bld->base.builder, addr_vec,
- int_vec_type, "");
-
- /* addr_vec = addr_vec * 4 */
- addr_vec = lp_build_mul(&bld->base, addr_vec, vec4);
+ addr_vec = get_indirect_offsets(bld, &reg->Indirect);
}
switch (reg->Register.File) {
@@ -741,6 +751,7 @@ emit_store(
}
if (reg->Register.Indirect) {
+ /* XXX use get_indirect_offsets() here eventually */
LLVMTypeRef int_vec_type = lp_build_int_vec_type(bld->base.type);
unsigned swizzle = tgsi_util_get_src_register_swizzle( &reg->Indirect, chan_index );
addr = LLVMBuildLoad(bld->base.builder,