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vkd3d-shader/spirv: Emit descriptor offset loads in the function entry block.

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Ensures they are loaded only once per function independent of the
control flow graph.
This commit is contained in:
Conor McCarthy 2023-06-14 12:32:10 +10:00 committed by Alexandre Julliard
parent 68b898fcb6
commit db0d51675c
Notes: Alexandre Julliard 2024-01-17 22:42:55 +01:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Approved-by: Alexandre Julliard (@julliard)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/450
1 changed files with 8 additions and 2 deletions
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10
libs/vkd3d-shader/spirv.c
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@ -2440,6 +2440,7 @@ static bool is_in_fork_or_join_phase(const struct spirv_compiler *compiler)
}
static void spirv_compiler_emit_initial_declarations(struct spirv_compiler *compiler);
static size_t spirv_compiler_get_current_function_location(struct spirv_compiler *compiler);
static const char *spirv_compiler_get_entry_point_name(const struct spirv_compiler *compiler)
{
@ -3520,11 +3521,13 @@ static uint32_t spirv_compiler_get_descriptor_index(struct spirv_compiler *compi
index_ids[0] = compiler->descriptor_offsets_member_id;
index_ids[1] = spirv_compiler_get_constant_uint(compiler, push_constant_index);
ptr_type_id = vkd3d_spirv_get_op_type_pointer(builder, SpvStorageClassPushConstant, type_id);
vkd3d_spirv_begin_function_stream_insertion(builder,
spirv_compiler_get_current_function_location(compiler));
ptr_id = vkd3d_spirv_build_op_in_bounds_access_chain(builder, ptr_type_id,
compiler->push_constants_var_id, index_ids, 2);
offset_id = vkd3d_spirv_build_op_load(builder, type_id, ptr_id, SpvMemoryAccessMaskNone);
if (!compiler->control_flow_depth)
compiler->descriptor_offset_ids[push_constant_index] = offset_id;
vkd3d_spirv_end_function_stream_insertion(builder);
compiler->descriptor_offset_ids[push_constant_index] = offset_id;
}
index_id = vkd3d_spirv_build_op_iadd(builder, type_id, index_id, offset_id);
}
@ -6664,6 +6667,9 @@ static void spirv_compiler_emit_hull_shader_main(struct spirv_compiler *compiler
struct vkd3d_spirv_builder *builder = &compiler->spirv_builder;
uint32_t void_id;
/* If a patch constant function used descriptor indexing the offsets must be reloaded. */
memset(compiler->descriptor_offset_ids, 0, compiler->offset_info.descriptor_table_count
* sizeof(*compiler->descriptor_offset_ids));
vkd3d_spirv_builder_begin_main_function(builder);
void_id = vkd3d_spirv_get_op_type_void(builder);