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libs/vkd3d-shader: Make sure that OpVariables are first instructions in main function.

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The SPIR-V spec says:

  "All OpVariable instructions in a function must be in the first block
  in the function. These instructions, together with any immediately
  preceding OpLine instructions, must be the first instructions in that
  block."
This commit is contained in:
Józef Kucia 2017-10-25 09:58:14 +02:00
parent b65c42e6f9
commit e959686f12
1 changed files with 13 additions and 4 deletions
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17
libs/vkd3d-shader/spirv.c
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@ -236,6 +236,8 @@ struct vkd3d_spirv_builder
struct vkd3d_spirv_stream insertion_stream;
size_t insertion_location;
size_t main_function_location;
/* entry point interface */
uint32_t *iface;
size_t iface_capacity;
@ -678,6 +680,10 @@ static void vkd3d_spirv_begin_function_stream_insertion(struct vkd3d_spirv_build
size_t location)
{
assert(builder->insertion_location == ~(size_t)0);
if (vkd3d_spirv_stream_current_location(&builder->function_stream) == location)
return;
builder->original_function_stream = builder->function_stream;
builder->function_stream = builder->insertion_stream;
builder->insertion_location = location;
@ -687,7 +693,8 @@ static void vkd3d_spirv_end_function_stream_insertion(struct vkd3d_spirv_builder
{
struct vkd3d_spirv_stream *insertion_stream = &builder->insertion_stream;
assert(builder->insertion_location != ~(size_t)0);
if (builder->insertion_location == ~(size_t)0)
return;
builder->insertion_stream = builder->function_stream;
builder->function_stream = builder->original_function_stream;
@ -1486,6 +1493,7 @@ static void vkd3d_spirv_builder_init(struct vkd3d_spirv_builder *builder)
vkd3d_spirv_alloc_id(builder), SpvFunctionControlMaskNone, function_type_id);
vkd3d_spirv_build_op_name(builder, builder->main_function_id, "main");
vkd3d_spirv_build_op_label(builder, vkd3d_spirv_alloc_id(builder));
builder->main_function_location = vkd3d_spirv_stream_current_location(&builder->function_stream);
}
static void vkd3d_spirv_builder_free(struct vkd3d_spirv_builder *builder)
@ -2954,9 +2962,8 @@ static void vkd3d_dxbc_compiler_emit_dcl_temps(struct vkd3d_dxbc_compiler *compi
unsigned int i;
uint32_t id;
/* FIXME: Make sure that function variables are declared at the beginning
* of the first block in the function. Otherwise, we'll produce invalid
* SPIR-V code. */
vkd3d_spirv_begin_function_stream_insertion(builder, builder->main_function_location);
assert(!compiler->temp_count);
compiler->temp_count = instruction->declaration.count;
for (i = 0; i < compiler->temp_count; ++i)
@ -2969,6 +2976,8 @@ static void vkd3d_dxbc_compiler_emit_dcl_temps(struct vkd3d_dxbc_compiler *compi
vkd3d_spirv_build_op_name(builder, id, "r%u", i);
}
vkd3d_spirv_end_function_stream_insertion(builder);
}
static void vkd3d_dxbc_compiler_emit_push_constant_buffers(struct vkd3d_dxbc_compiler *compiler)