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vkd3d-shader/spirv: Omit the "endloop" branch to the loop start if the loop block was previously ended.

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Avoiding generation of invalid SPIR-V.

Signed-off-by: Conor McCarthy <cmccarthy@codeweavers.com>
Signed-off-by: Henri Verbeet <hverbeet@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Philip Rebohle 2021-11-08 14:50:17 +01:00 committed by Alexandre Julliard
parent 581d71310f
commit 4e398459b1
2 changed files with 6 additions and 1 deletions
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4
libs/vkd3d-shader/spirv.c
View File

@ -7661,6 +7661,7 @@ static int vkd3d_dxbc_compiler_emit_control_flow_instruction(struct vkd3d_dxbc_c
cf_info->u.loop.continue_block_id = continue_block_id;
cf_info->u.loop.merge_block_id = merge_block_id;
cf_info->current_block = VKD3D_BLOCK_LOOP;
cf_info->inside_block = true;
vkd3d_spirv_build_op_name(builder, loop_header_block_id, "loop%u_header", compiler->loop_id);
vkd3d_spirv_build_op_name(builder, loop_body_block_id, "loop%u_body", compiler->loop_id);
@ -7673,6 +7674,9 @@ static int vkd3d_dxbc_compiler_emit_control_flow_instruction(struct vkd3d_dxbc_c
assert(compiler->control_flow_depth);
assert(cf_info->current_block == VKD3D_BLOCK_LOOP);
/* The loop block may have already been ended by an unconditional
* break instruction right before the end of the loop. */
if (cf_info->inside_block)
vkd3d_spirv_build_op_branch(builder, cf_info->u.loop.continue_block_id);
vkd3d_spirv_build_op_label(builder, cf_info->u.loop.continue_block_id);

1
libs/vkd3d-shader/vkd3d_shader_main.c
View File

@ -814,6 +814,7 @@ static int vkd3d_shader_scan_instruction(struct vkd3d_shader_scan_context *conte
case VKD3DSIH_LOOP:
cf_info = vkd3d_shader_scan_push_cf_info(context);
cf_info->type = VKD3D_SHADER_BLOCK_LOOP;
cf_info->inside_block = true;
break;
case VKD3DSIH_ENDLOOP:
if (!(cf_info = vkd3d_shader_scan_get_current_cf_info(context)) || cf_info->type != VKD3D_SHADER_BLOCK_LOOP)