source/spirv_target_env.cpp

// Copyright (c) 2015-2016 The Khronos Group Inc.
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//
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// MODIFICATIONS TO THIS FILE MAY MEAN IT NO LONGER ACCURATELY REFLECTS
// KHRONOS STANDARDS. THE UNMODIFIED, NORMATIVE VERSIONS OF KHRONOS
// SPECIFICATIONS AND HEADER INFORMATION ARE LOCATED AT
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#include <cassert>
#include <cstring>

#include "spirv-tools/libspirv.h"
#include "spirv_constant.h"

const char* spvTargetEnvDescription(spv_target_env env) {
  switch (env) {
    case SPV_ENV_UNIVERSAL_1_0:
      return "SPIR-V 1.0";
    case SPV_ENV_VULKAN_1_0:
      return "SPIR-V 1.0 (under Vulkan 1.0 semantics)";
    case SPV_ENV_UNIVERSAL_1_1:
      return "SPIR-V 1.1";
    default:
      break;
  }
  assert(0 && "Unhandled SPIR-V target environment");
  return "";
}

uint32_t spvVersionForTargetEnv(spv_target_env env) {
  switch (env) {
    case SPV_ENV_UNIVERSAL_1_0:
    case SPV_ENV_VULKAN_1_0:
      return SPV_SPIRV_VERSION_WORD(1, 0);
    case SPV_ENV_UNIVERSAL_1_1:
      return SPV_SPIRV_VERSION_WORD(1, 1);
    default:
      break;
  }
  assert(0 && "Unhandled SPIR-V target environment");
  return SPV_SPIRV_VERSION_WORD(0, 0);
}

bool spvParseTargetEnv(const char* s, spv_target_env* env) {
  if (!strncmp(s, "vulkan1.0", strlen("vulkan1.0"))) {
    if (env) *env = SPV_ENV_VULKAN_1_0;
    return true;
  } else if (!strncmp(s, "spv1.0", strlen("spv1.0"))) {
    if (env) *env = SPV_ENV_UNIVERSAL_1_0;
    return true;
  } else if (!strncmp(s, "spv1.1", strlen("spv1.1"))) {
    if (env) *env = SPV_ENV_UNIVERSAL_1_1;
    return true;
  } else {
    if (env) *env = SPV_ENV_UNIVERSAL_1_0;
    return false;
  }
}