SPIRV-Cross/tests-other/hlsl_resource_bindings.cpp

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// Testbench for HLSL resource binding APIs.
// It does not validate output at the moment, but it's useful for ad-hoc testing.
#include <spirv_cross_c.h>
#include <vector>
#include <stdio.h>
#include <stdlib.h>
#define SPVC_CHECKED_CALL(x) do { \
if ((x) != SPVC_SUCCESS) { \
fprintf(stderr, "Failed at line %d.\n", __LINE__); \
exit(1); \
} \
} while(0)
static std::vector<SpvId> read_file(const char *path)
{
long len;
FILE *file = fopen(path, "rb");
if (!file)
return {};
fseek(file, 0, SEEK_END);
len = ftell(file);
rewind(file);
std::vector<SpvId> buffer(len / sizeof(SpvId));
if (fread(buffer.data(), 1, len, file) != (size_t)len)
{
fclose(file);
return {};
}
fclose(file);
return buffer;
}
int main(int argc, char **argv)
{
if (argc != 2)
return EXIT_FAILURE;
auto buffer = read_file(argv[1]);
if (buffer.empty())
return EXIT_FAILURE;
spvc_context ctx;
spvc_parsed_ir parsed_ir;
spvc_compiler compiler;
SPVC_CHECKED_CALL(spvc_context_create(&ctx));
SPVC_CHECKED_CALL(spvc_context_parse_spirv(ctx, buffer.data(), buffer.size(), &parsed_ir));
SPVC_CHECKED_CALL(spvc_context_create_compiler(ctx, SPVC_BACKEND_HLSL, parsed_ir, SPVC_CAPTURE_MODE_TAKE_OWNERSHIP, &compiler));
spvc_compiler_options opts;
SPVC_CHECKED_CALL(spvc_compiler_create_compiler_options(compiler, &opts));
SPVC_CHECKED_CALL(spvc_compiler_options_set_uint(opts, SPVC_COMPILER_OPTION_HLSL_SHADER_MODEL, 51));
SPVC_CHECKED_CALL(spvc_compiler_install_compiler_options(compiler, opts));
spvc_hlsl_resource_binding binding;
spvc_hlsl_resource_binding_init(&binding);
binding.stage = SpvExecutionModelFragment;
binding.desc_set = 1;
binding.binding = 4;
binding.srv.register_space = 2;
binding.srv.register_binding = 3;
binding.sampler.register_space = 4;
binding.sampler.register_binding = 5;
SPVC_CHECKED_CALL(spvc_compiler_hlsl_add_resource_binding(compiler, &binding));
binding.desc_set = SPVC_HLSL_PUSH_CONSTANT_DESC_SET;
binding.binding = SPVC_HLSL_PUSH_CONSTANT_BINDING;
binding.cbv.register_space = 0;
binding.cbv.register_binding = 4;
SPVC_CHECKED_CALL(spvc_compiler_hlsl_add_resource_binding(compiler, &binding));
const char *str;
SPVC_CHECKED_CALL(spvc_compiler_compile(compiler, &str));
fprintf(stderr, "Output:\n%s\n", str);
if (!spvc_compiler_hlsl_is_resource_used(compiler, SpvExecutionModelFragment, 1, 4))
return EXIT_FAILURE;
if (!spvc_compiler_hlsl_is_resource_used(compiler, SpvExecutionModelFragment, SPVC_HLSL_PUSH_CONSTANT_DESC_SET, SPVC_HLSL_PUSH_CONSTANT_BINDING))
return EXIT_FAILURE;
}