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// Testbench for MSL constexpr samplers.
// It does not validate output, but it's useful for ad-hoc testing.
#ifdef _MSC_VER
#define _CRT_SECURE_NO_WARNINGS
#endif
#include <spirv_cross_c.h>
#include <stdlib.h>
#include <stdio.h>
#include <vector>
#define SPVC_CHECKED_CALL(x) do { \
if ((x) != SPVC_SUCCESS) { \
fprintf(stderr, "Failed at line %d.\n", __LINE__); \
exit(1); \
} \
} while(0)
#define SPVC_CHECKED_CALL_NEGATIVE(x) do { \
g_fail_on_error = SPVC_FALSE; \
if ((x) == SPVC_SUCCESS) { \
fprintf(stderr, "Failed at line %d.\n", __LINE__); \
exit(1); \
} \
g_fail_on_error = SPVC_TRUE; \
} 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_MSL, parsed_ir, SPVC_CAPTURE_MODE_TAKE_OWNERSHIP, &compiler));
spvc_msl_resource_binding binding;
spvc_msl_resource_binding_init(&binding);
binding.desc_set = 1;
binding.binding = 2;
binding.stage = SpvExecutionModelFragment;
binding.msl_texture = 0;
binding.msl_sampler = 0;
SPVC_CHECKED_CALL(spvc_compiler_msl_add_resource_binding(compiler, &binding));
binding.binding = 3;
binding.msl_texture = 1;
binding.msl_sampler = 1000; // Will be remapped anyways, sanity check.
SPVC_CHECKED_CALL(spvc_compiler_msl_add_resource_binding(compiler, &binding));
binding.desc_set = 2;
binding.binding = 2;
binding.msl_texture = 2;
SPVC_CHECKED_CALL(spvc_compiler_msl_add_resource_binding(compiler, &binding));
binding.binding = 3;
binding.msl_texture = 3;
SPVC_CHECKED_CALL(spvc_compiler_msl_add_resource_binding(compiler, &binding));
spvc_msl_constexpr_sampler samp;
spvc_msl_constexpr_sampler_init(&samp);
samp.s_address = SPVC_MSL_SAMPLER_ADDRESS_REPEAT;
samp.t_address = SPVC_MSL_SAMPLER_ADDRESS_REPEAT;
samp.r_address = SPVC_MSL_SAMPLER_ADDRESS_REPEAT;
SPVC_CHECKED_CALL(spvc_compiler_msl_remap_constexpr_sampler_by_binding(compiler, 1, 3, &samp));
samp.s_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
samp.t_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
samp.r_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
SPVC_CHECKED_CALL(spvc_compiler_msl_remap_constexpr_sampler_by_binding(compiler, 2, 4, &samp));
samp.compare_enable = SPVC_TRUE;
samp.compare_func = SPVC_MSL_SAMPLER_COMPARE_FUNC_LESS;
samp.s_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
samp.t_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
samp.r_address = SPVC_MSL_SAMPLER_ADDRESS_CLAMP_TO_EDGE;
SPVC_CHECKED_CALL(spvc_compiler_msl_remap_constexpr_sampler_by_binding(compiler, 2, 5, &samp));
const char *str;
SPVC_CHECKED_CALL(spvc_compiler_compile(compiler, &str));
// Should not be marked as used.
if (spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 2, 4))
return EXIT_FAILURE;
// Should not be marked as used.
if (spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 2, 5))
return EXIT_FAILURE;
// Should be marked, as a sanity check.
if (!spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 1, 2))
return EXIT_FAILURE;
if (!spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 1, 3))
return EXIT_FAILURE;
if (!spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 2, 2))
return EXIT_FAILURE;
if (!spvc_compiler_msl_is_resource_used(compiler, SpvExecutionModelFragment, 2, 3))
return EXIT_FAILURE;
fprintf(stderr, "Output:\n%s\n", str);
}
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