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vkd3d-shader/msl: Generate the shader entry point prologue.

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This commit is contained in:
Feifan He 2024-09-30 11:52:49 +08:00 committed by Henri Verbeet
parent cd070f9995
commit 7c42da465a
Notes: Henri Verbeet 2024-10-07 17:52:05 +02:00 
Approved-by: Giovanni Mascellani (@giomasce)
Approved-by: Henri Verbeet (@hverbeet)
Merge-Request: https://gitlab.winehq.org/wine/vkd3d/-/merge_requests/1132
1 changed files with 31 additions and 1 deletions
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32
libs/vkd3d-shader/msl.c
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@ -464,6 +464,36 @@ static void msl_generate_output_struct_declarations(struct msl_generator *gen)
vkd3d_string_buffer_printf(buffer, "};\n\n");
}
static void msl_generate_entrypoint_prologue(struct msl_generator *gen)
{
const struct shader_signature *signature = &gen->program->input_signature;
struct vkd3d_string_buffer *buffer = gen->buffer;
const struct signature_element *e;
unsigned int i;
for (i = 0; i < signature->element_count; ++i)
{
e = &signature->elements[i];
if (e->target_location == SIGNATURE_TARGET_LOCATION_UNUSED)
continue;
vkd3d_string_buffer_printf(buffer, " %s_in[%u]", gen->prefix, e->register_index);
if (e->sysval_semantic == VKD3D_SHADER_SV_NONE)
{
msl_print_register_datatype(buffer, gen, vkd3d_data_type_from_component_type(e->component_type));
vkd3d_string_buffer_printf(buffer, " = input.shader_in_%u", i);
}
else
{
vkd3d_string_buffer_printf(buffer, " = <unhandled sysval %#x>", e->sysval_semantic);
msl_compiler_error(gen, VKD3D_SHADER_ERROR_MSL_INTERNAL,
"Internal compiler error: Unhandled system value %#x input.", e->sysval_semantic);
}
vkd3d_string_buffer_printf(buffer, ";\n");
}
}
static void msl_generate_entrypoint_epilogue(struct msl_generator *gen)
{
const struct shader_signature *signature = &gen->program->output_signature;
@ -525,7 +555,7 @@ static void msl_generate_entrypoint(struct msl_generator *gen)
vkd3d_string_buffer_printf(gen->buffer, " vkd3d_vec4 %s_out[%u];\n", gen->prefix, 32);
vkd3d_string_buffer_printf(gen->buffer, " vkd3d_%s_out output;\n", gen->prefix);
/* TODO: prologue */
msl_generate_entrypoint_prologue(gen);
vkd3d_string_buffer_printf(gen->buffer, " %s_main(%s_in, %s_out);\n", gen->prefix, gen->prefix, gen->prefix);