bgfx/tools/shaderc/shaderc.cpp
2017-06-11 21:01:38 -07:00

2213 lines
53 KiB
C++

/*
* Copyright 2011-2017 Branimir Karadzic. All rights reserved.
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
*/
#include "shaderc.h"
#include <bx/commandline.h>
#define MAX_TAGS 256
extern "C"
{
#include <fpp.h>
} // extern "C"
#define BGFX_CHUNK_MAGIC_CSH BX_MAKEFOURCC('C', 'S', 'H', 0x2)
#define BGFX_CHUNK_MAGIC_FSH BX_MAKEFOURCC('F', 'S', 'H', 0x4)
#define BGFX_CHUNK_MAGIC_VSH BX_MAKEFOURCC('V', 'S', 'H', 0x4)
#define BGFX_SHADERC_VERSION_MAJOR 1
#define BGFX_SHADERC_VERSION_MINOR 3
namespace bgfx
{
bool g_verbose = false;
static const char* s_ARB_shader_texture_lod[] =
{
"texture2DLod",
"texture2DArrayLod", // BK - interacts with ARB_texture_array.
"texture2DProjLod",
"texture2DGrad",
"texture2DProjGrad",
"texture3DLod",
"texture3DProjLod",
"texture3DGrad",
"texture3DProjGrad",
"textureCubeLod",
"textureCubeGrad",
"shadow2DLod",
"shadow2DProjLod",
NULL
// "texture1DLod",
// "texture1DProjLod",
// "shadow1DLod",
// "shadow1DProjLod",
};
static const char* s_EXT_shader_texture_lod[] =
{
"texture2DLod",
"texture2DProjLod",
"textureCubeLod",
"texture2DGrad",
"texture2DProjGrad",
"textureCubeGrad",
NULL
};
static const char* s_EXT_shadow_samplers[] =
{
"shadow2D",
"shadow2DProj",
"sampler2DShadow",
NULL
};
static const char* s_OES_standard_derivatives[] =
{
"dFdx",
"dFdy",
"fwidth",
NULL
};
static const char* s_OES_texture_3D[] =
{
"texture3D",
"texture3DProj",
"texture3DLod",
"texture3DProjLod",
NULL
};
static const char* s_EXT_gpu_shader4[] =
{
"gl_VertexID",
"gl_InstanceID",
NULL
};
static const char* s_ARB_gpu_shader5[] =
{
"bitfieldReverse",
"floatBitsToInt",
"floatBitsToUint",
"intBitsToFloat",
"uintBitsToFloat",
NULL
};
static const char* s_ARB_shading_language_packing[] =
{
"packHalf2x16",
"unpackHalf2x16",
NULL
};
static const char* s_130[] =
{
"uint",
"uint2",
"uint3",
"uint4",
"isampler3D",
"usampler3D",
NULL
};
static const char* s_textureArray[] =
{
"texture2DArray",
"texture2DArrayLod",
"shadow2DArray",
NULL
};
static const char* s_ARB_texture_multisample[] =
{
"sampler2DMS",
"isampler2DMS",
"usampler2DMS",
NULL
};
static const char* s_texelFetch[] =
{
"texelFetch",
"texelFetchOffset",
NULL
};
const char* s_uniformTypeName[] =
{
"int", "int",
NULL, NULL,
"vec4", "float4",
"mat3", "float3x3",
"mat4", "float4x4",
};
BX_STATIC_ASSERT(BX_COUNTOF(s_uniformTypeName) == UniformType::Count*2);
const char* interpolationDx11(const char* _glsl)
{
if (0 == bx::strCmp(_glsl, "smooth") )
{
return "linear";
}
else if (0 == bx::strCmp(_glsl, "flat") )
{
return "nointerpolation";
}
return _glsl; // centroid, noperspective
}
const char* getUniformTypeName(UniformType::Enum _enum)
{
uint32_t idx = _enum & ~(BGFX_UNIFORM_FRAGMENTBIT|BGFX_UNIFORM_SAMPLERBIT);
if (idx < UniformType::Count)
{
return s_uniformTypeName[idx];
}
return "Unknown uniform type?!";
}
UniformType::Enum nameToUniformTypeEnum(const char* _name)
{
for (uint32_t ii = 0; ii < UniformType::Count*2; ++ii)
{
if (NULL != s_uniformTypeName[ii]
&& 0 == bx::strCmp(_name, s_uniformTypeName[ii]) )
{
return UniformType::Enum(ii/2);
}
}
return UniformType::Count;
}
int32_t writef(bx::WriterI* _writer, const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
char temp[2048];
char* out = temp;
int32_t max = sizeof(temp);
int32_t len = bx::vsnprintf(out, max, _format, argList);
if (len > max)
{
out = (char*)alloca(len);
len = bx::vsnprintf(out, len, _format, argList);
}
len = bx::write(_writer, out, len);
va_end(argList);
return len;
}
class Bin2cWriter : public bx::FileWriter
{
public:
Bin2cWriter(const char* _name)
: m_name(_name)
{
}
virtual ~Bin2cWriter()
{
}
virtual void close() BX_OVERRIDE
{
generate();
return bx::FileWriter::close();
}
virtual int32_t write(const void* _data, int32_t _size, bx::Error*) BX_OVERRIDE
{
const char* data = (const char*)_data;
m_buffer.insert(m_buffer.end(), data, data+_size);
return _size;
}
private:
void generate()
{
#define HEX_DUMP_WIDTH 16
#define HEX_DUMP_SPACE_WIDTH 96
#define HEX_DUMP_FORMAT "%-" BX_STRINGIZE(HEX_DUMP_SPACE_WIDTH) "." BX_STRINGIZE(HEX_DUMP_SPACE_WIDTH) "s"
const uint8_t* data = &m_buffer[0];
uint32_t size = (uint32_t)m_buffer.size();
outf("static const uint8_t %s[%d] =\n{\n", m_name.c_str(), size);
if (NULL != data)
{
char hex[HEX_DUMP_SPACE_WIDTH+1];
char ascii[HEX_DUMP_WIDTH+1];
uint32_t hexPos = 0;
uint32_t asciiPos = 0;
for (uint32_t ii = 0; ii < size; ++ii)
{
bx::snprintf(&hex[hexPos], sizeof(hex)-hexPos, "0x%02x, ", data[asciiPos]);
hexPos += 6;
ascii[asciiPos] = isprint(data[asciiPos]) && data[asciiPos] != '\\' ? data[asciiPos] : '.';
asciiPos++;
if (HEX_DUMP_WIDTH == asciiPos)
{
ascii[asciiPos] = '\0';
outf("\t" HEX_DUMP_FORMAT "// %s\n", hex, ascii);
data += asciiPos;
hexPos = 0;
asciiPos = 0;
}
}
if (0 != asciiPos)
{
ascii[asciiPos] = '\0';
outf("\t" HEX_DUMP_FORMAT "// %s\n", hex, ascii);
}
}
outf("};\n");
#undef HEX_DUMP_WIDTH
#undef HEX_DUMP_SPACE_WIDTH
#undef HEX_DUMP_FORMAT
}
int32_t outf(const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
char temp[2048];
char* out = temp;
int32_t max = sizeof(temp);
int32_t len = bx::vsnprintf(out, max, _format, argList);
if (len > max)
{
out = (char*)alloca(len);
len = bx::vsnprintf(out, len, _format, argList);
}
bx::Error err;
int32_t size = bx::FileWriter::write(out, len, &err);
va_end(argList);
return size;
}
std::string m_filePath;
std::string m_name;
typedef std::vector<uint8_t> Buffer;
Buffer m_buffer;
};
struct Varying
{
std::string m_precision;
std::string m_interpolation;
std::string m_name;
std::string m_type;
std::string m_init;
std::string m_semantics;
};
typedef std::unordered_map<std::string, Varying> VaryingMap;
class File
{
public:
File(const char* _filePath)
: m_data(NULL)
{
bx::FileReader reader;
if (bx::open(&reader, _filePath) )
{
m_size = (uint32_t)bx::getSize(&reader);
m_data = new char[m_size+1];
m_size = (uint32_t)bx::read(&reader, m_data, m_size);
bx::close(&reader);
if (m_data[0] == '\xef'
&& m_data[1] == '\xbb'
&& m_data[2] == '\xbf')
{
bx::memMove(m_data, &m_data[3], m_size-3);
m_size -= 3;
}
m_data[m_size] = '\0';
}
}
~File()
{
delete [] m_data;
}
const char* getData() const
{
return m_data;
}
uint32_t getSize() const
{
return m_size;
}
private:
char* m_data;
uint32_t m_size;
};
char* strInsert(char* _str, const char* _insert)
{
uint32_t len = bx::strLen(_insert);
bx::memMove(&_str[len], _str, bx::strLen(_str) );
bx::memCopy(_str, _insert, len);
return _str + len;
}
void strReplace(char* _str, const char* _find, const char* _replace)
{
const int32_t len = bx::strLen(_find);
char* replace = (char*)alloca(len+1);
bx::strCopy(replace, len+1, _replace);
for (int32_t ii = bx::strLen(replace); ii < len; ++ii)
{
replace[ii] = ' ';
}
replace[len] = '\0';
BX_CHECK(len >= bx::strLen(_replace), "");
for (const char* ptr = bx::strFind(_str, _find); NULL != ptr; ptr = bx::strFind(ptr + len, _find) )
{
bx::memCopy(const_cast<char*>(ptr), replace, len);
}
}
void strNormalizeEol(char* _str)
{
strReplace(_str, "\r\n", "\n");
strReplace(_str, "\r", "\n");
}
void printCode(const char* _code, int32_t _line, int32_t _start, int32_t _end, int32_t _column)
{
fprintf(stderr, "Code:\n---\n");
bx::Error err;
LineReader reader(_code);
for (int32_t line = 1; err.isOk() && line < _end; ++line)
{
char str[4096];
int32_t len = bx::read(&reader, str, BX_COUNTOF(str), &err);
if (err.isOk()
&& line >= _start)
{
std::string strLine(str, len);
if (_line == line)
{
fprintf(stderr, "\n");
fprintf(stderr, ">>> %3d: %s", line, strLine.c_str() );
if (-1 != _column)
{
fprintf(stderr, ">>> %3d: %*s\n", _column, _column, "^");
}
fprintf(stderr, "\n");
}
else
{
fprintf(stderr, " %3d: %s", line, strLine.c_str() );
}
}
}
fprintf(stderr, "---\n");
}
void writeFile(const char* _filePath, const void* _data, int32_t _size)
{
bx::FileWriter out;
if (bx::open(&out, _filePath) )
{
bx::write(&out, _data, _size);
bx::close(&out);
}
}
struct Preprocessor
{
Preprocessor(const char* _filePath, bool _essl)
: m_tagptr(m_tags)
, m_scratchPos(0)
, m_fgetsPos(0)
{
m_tagptr->tag = FPPTAG_USERDATA;
m_tagptr->data = this;
m_tagptr++;
m_tagptr->tag = FPPTAG_DEPENDS;
m_tagptr->data = (void*)fppDepends;
m_tagptr++;
m_tagptr->tag = FPPTAG_INPUT;
m_tagptr->data = (void*)fppInput;
m_tagptr++;
m_tagptr->tag = FPPTAG_OUTPUT;
m_tagptr->data = (void*)fppOutput;
m_tagptr++;
m_tagptr->tag = FPPTAG_ERROR;
m_tagptr->data = (void*)fppError;
m_tagptr++;
m_tagptr->tag = FPPTAG_IGNOREVERSION;
m_tagptr->data = (void*)0;
m_tagptr++;
m_tagptr->tag = FPPTAG_LINE;
m_tagptr->data = (void*)0;
m_tagptr++;
m_tagptr->tag = FPPTAG_INPUT_NAME;
m_tagptr->data = scratch(_filePath);
m_tagptr++;
if (!_essl)
{
m_default = "#define lowp\n#define mediump\n#define highp\n";
}
}
void setDefine(const char* _define)
{
m_tagptr->tag = FPPTAG_DEFINE;
m_tagptr->data = scratch(_define);
m_tagptr++;
}
void setDefaultDefine(const char* _name)
{
char temp[1024];
bx::snprintf(temp, BX_COUNTOF(temp)
, "#ifndef %s\n"
"# define %s 0\n"
"#endif // %s\n"
"\n"
, _name
, _name
, _name
);
m_default += temp;
}
void writef(const char* _format, ...)
{
va_list argList;
va_start(argList, _format);
bx::stringPrintfVargs(m_default, _format, argList);
va_end(argList);
}
void addInclude(const char* _includeDir)
{
char* start = scratch(_includeDir);
for (char* split = const_cast<char*>(bx::strFind(start, ';') )
; NULL != split
; split = const_cast<char*>(bx::strFind(start, ';') )
)
{
*split = '\0';
m_tagptr->tag = FPPTAG_INCLUDE_DIR;
m_tagptr->data = start;
m_tagptr++;
start = split + 1;
}
m_tagptr->tag = FPPTAG_INCLUDE_DIR;
m_tagptr->data = start;
m_tagptr++;
}
void addDependency(const char* _fileName)
{
m_depends += " \\\n ";
m_depends += _fileName;
}
bool run(const char* _input)
{
m_fgetsPos = 0;
m_preprocessed.clear();
m_input = m_default;
m_input += "\n\n";
int32_t len = bx::strLen(_input)+1;
char* temp = new char[len];
bx::eolLF(temp, len, _input);
m_input += temp;
delete [] temp;
fppTag* tagptr = m_tagptr;
tagptr->tag = FPPTAG_END;
tagptr->data = 0;
tagptr++;
int result = fppPreProcess(m_tags);
return 0 == result;
}
char* fgets(char* _buffer, int _size)
{
int ii = 0;
for (char ch = m_input[m_fgetsPos]; m_fgetsPos < m_input.size() && ii < _size-1; ch = m_input[++m_fgetsPos])
{
_buffer[ii++] = ch;
if (ch == '\n' || ii == _size)
{
_buffer[ii] = '\0';
m_fgetsPos++;
return _buffer;
}
}
return NULL;
}
static void fppDepends(char* _fileName, void* _userData)
{
Preprocessor* thisClass = (Preprocessor*)_userData;
thisClass->addDependency(_fileName);
}
static char* fppInput(char* _buffer, int _size, void* _userData)
{
Preprocessor* thisClass = (Preprocessor*)_userData;
return thisClass->fgets(_buffer, _size);
}
static void fppOutput(int _ch, void* _userData)
{
Preprocessor* thisClass = (Preprocessor*)_userData;
thisClass->m_preprocessed += char(_ch);
}
static void fppError(void* /*_userData*/, char* _format, va_list _vargs)
{
vfprintf(stderr, _format, _vargs);
}
char* scratch(const char* _str)
{
char* result = &m_scratch[m_scratchPos];
bx::strCopy(result, uint32_t(sizeof(m_scratch)-m_scratchPos), _str);
m_scratchPos += (uint32_t)bx::strLen(_str)+1;
return result;
}
fppTag m_tags[MAX_TAGS];
fppTag* m_tagptr;
std::string m_depends;
std::string m_default;
std::string m_input;
std::string m_preprocessed;
char m_scratch[16<<10];
uint32_t m_scratchPos;
uint32_t m_fgetsPos;
};
typedef std::vector<std::string> InOut;
uint32_t parseInOut(InOut& _inout, const char* _str, const char* _eol)
{
uint32_t hash = 0;
_str = bx::strws(_str);
if (_str < _eol)
{
const char* delim;
do
{
delim = strpbrk(_str, " ,");
if (NULL != delim)
{
delim = delim > _eol ? _eol : delim;
std::string token;
token.assign(_str, delim-_str);
_inout.push_back(token);
_str = bx::strws(delim + 1);
}
}
while (delim < _eol && _str < _eol && NULL != delim);
std::sort(_inout.begin(), _inout.end() );
bx::HashMurmur2A murmur;
murmur.begin();
for (InOut::const_iterator it = _inout.begin(), itEnd = _inout.end(); it != itEnd; ++it)
{
murmur.add(it->c_str(), (uint32_t)it->size() );
}
hash = murmur.end();
}
return hash;
}
void addFragData(Preprocessor& _preprocessor, char* _data, uint32_t _idx, bool _comma)
{
char find[32];
bx::snprintf(find, sizeof(find), "gl_FragData[%d]", _idx);
char replace[32];
bx::snprintf(replace, sizeof(replace), "gl_FragData_%d_", _idx);
strReplace(_data, find, replace);
_preprocessor.writef(
" \\\n\t%sout vec4 gl_FragData_%d_ : SV_TARGET%d"
, _comma ? ", " : " "
, _idx
, _idx
);
}
void voidFragData(char* _data, uint32_t _idx)
{
char find[32];
bx::snprintf(find, sizeof(find), "gl_FragData[%d]", _idx);
strReplace(_data, find, "bgfx_VoidFrag");
}
// c - compute
// d - domain
// f - fragment
// g - geometry
// h - hull
// v - vertex
//
// OpenGL #version Features Direct3D Features Shader Model
// 2.1 120 vf 9.0 vf 2.0
// 3.0 130
// 3.1 140
// 3.2 150 vgf
// 3.3 330 10.0 vgf 4.0
// 4.0 400 vhdgf
// 4.1 410
// 4.2 420 11.0 vhdgf+c 5.0
// 4.3 430 vhdgf+c
// 4.4 440
void help(const char* _error = NULL)
{
if (NULL != _error)
{
fprintf(stderr, "Error:\n%s\n\n", _error);
}
fprintf(stderr
, "shaderc, bgfx shader compiler tool, version %d.%d.%d.\n"
"Copyright 2011-2017 Branimir Karadzic. All rights reserved.\n"
"License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause\n\n"
, BGFX_SHADERC_VERSION_MAJOR
, BGFX_SHADERC_VERSION_MINOR
, BGFX_API_VERSION
);
fprintf(stderr
, "Usage: shaderc -f <in> -o <out> --type <v/f> --platform <platform>\n"
"\n"
"Options:\n"
" -h, --help Help.\n"
" -v, --version Version information only.\n"
" -f <file path> Input file path.\n"
" -i <include path> Include path (for multiple paths use use -i multiple times).\n"
" -o <file path> Output file path.\n"
" --bin2c <file path> Generate C header file.\n"
" --depends Generate makefile style depends file.\n"
" --platform <platform> Target platform.\n"
" android\n"
" asm.js\n"
" ios\n"
" linux\n"
" nacl\n"
" osx\n"
" windows\n"
" --preprocess Preprocess only.\n"
" --define <defines> Add defines to preprocessor (semicolon separated).\n"
" --raw Do not process shader. No preprocessor, and no glsl-optimizer (GLSL only).\n"
" --type <type> Shader type (vertex, fragment)\n"
" --varyingdef <file path> Path to varying.def.sc file.\n"
" --verbose Verbose.\n"
"\n"
"Options (DX9 and DX11 only):\n"
"\n"
" --debug Debug information.\n"
" --disasm Disassemble compiled shader.\n"
" -p, --profile <profile> Shader model (f.e. ps_3_0).\n"
" -O <level> Optimization level (0, 1, 2, 3).\n"
" --Werror Treat warnings as errors.\n"
"\n"
"For additional information, see https://github.com/bkaradzic/bgfx\n"
);
}
int compileShader(int _argc, const char* _argv[])
{
bx::CommandLine cmdLine(_argc, _argv);
if (cmdLine.hasArg('v', "version") )
{
fprintf(stderr
, "shaderc, bgfx shader compiler tool, version %d.%d.%d.\n"
, BGFX_SHADERC_VERSION_MAJOR
, BGFX_SHADERC_VERSION_MINOR
, BGFX_API_VERSION
);
return EXIT_SUCCESS;
}
if (cmdLine.hasArg('h', "help") )
{
help();
return EXIT_FAILURE;
}
g_verbose = cmdLine.hasArg("verbose");
const char* filePath = cmdLine.findOption('f');
if (NULL == filePath)
{
help("Shader file name must be specified.");
return EXIT_FAILURE;
}
const char* outFilePath = cmdLine.findOption('o');
if (NULL == outFilePath)
{
help("Output file name must be specified.");
return EXIT_FAILURE;
}
const char* type = cmdLine.findOption('\0', "type");
if (NULL == type)
{
help("Must specify shader type.");
return EXIT_FAILURE;
}
const char* platform = cmdLine.findOption('\0', "platform");
if (NULL == platform)
{
platform = "";
}
bool raw = cmdLine.hasArg('\0', "raw");
uint32_t glsl = 0;
uint32_t essl = 0;
uint32_t hlsl = 0;
uint32_t d3d = 11;
uint32_t metal = 0;
uint32_t pssl = 0;
uint32_t spirv = 0;
const char* profile = cmdLine.findOption('p', "profile");
if (NULL != profile)
{
if (0 == bx::strCmp(&profile[1], "s_4_0_level", 11) )
{
hlsl = 2;
}
else if (0 == bx::strCmp(&profile[1], "s_3", 3) )
{
hlsl = 3;
d3d = 9;
}
else if (0 == bx::strCmp(&profile[1], "s_4", 3) )
{
hlsl = 4;
}
else if (0 == bx::strCmp(&profile[1], "s_5", 3) )
{
hlsl = 5;
}
else if (0 == bx::strCmp(profile, "metal") )
{
metal = 1;
}
else if (0 == bx::strCmp(profile, "pssl") )
{
pssl = 1;
}
else if (0 == bx::strCmp(profile, "spirv") )
{
spirv = 1;
}
else
{
glsl = atoi(profile);
}
}
else
{
essl = 2;
}
const char* bin2c = NULL;
if (cmdLine.hasArg("bin2c") )
{
bin2c = cmdLine.findOption("bin2c");
if (NULL == bin2c)
{
bin2c = bx::baseName(outFilePath);
uint32_t len = (uint32_t)bx::strLen(bin2c);
char* temp = (char*)alloca(len+1);
for (char *out = temp; *bin2c != '\0';)
{
char ch = *bin2c++;
if (isalnum(ch) )
{
*out++ = ch;
}
else
{
*out++ = '_';
}
}
temp[len] = '\0';
bin2c = temp;
}
}
bool depends = cmdLine.hasArg("depends");
bool preprocessOnly = cmdLine.hasArg("preprocess");
const char* includeDir = cmdLine.findOption('i');
BX_TRACE("depends: %d", depends);
BX_TRACE("preprocessOnly: %d", preprocessOnly);
BX_TRACE("includeDir: %s", includeDir);
Preprocessor preprocessor(filePath, 0 != essl);
for (int ii = 1; NULL != includeDir; ++ii)
{
preprocessor.addInclude(includeDir);
includeDir = cmdLine.findOption(ii, 'i');
}
std::string dir;
{
const char* base = bx::baseName(filePath);
if (base != filePath)
{
dir.assign(filePath, base-filePath);
preprocessor.addInclude(dir.c_str() );
}
}
const char* defines = cmdLine.findOption("define");
while (NULL != defines
&& '\0' != *defines)
{
defines = bx::strws(defines);
const char* eol = bx::strFind(defines, ';');
if (NULL == eol)
{
eol = defines + bx::strLen(defines);
}
std::string define(defines, eol);
preprocessor.setDefine(define.c_str() );
defines = ';' == *eol ? eol+1 : eol;
}
preprocessor.setDefaultDefine("BX_PLATFORM_ANDROID");
preprocessor.setDefaultDefine("BX_PLATFORM_EMSCRIPTEN");
preprocessor.setDefaultDefine("BX_PLATFORM_IOS");
preprocessor.setDefaultDefine("BX_PLATFORM_LINUX");
preprocessor.setDefaultDefine("BX_PLATFORM_OSX");
preprocessor.setDefaultDefine("BX_PLATFORM_PS4");
preprocessor.setDefaultDefine("BX_PLATFORM_WINDOWS");
preprocessor.setDefaultDefine("BX_PLATFORM_XBOX360");
preprocessor.setDefaultDefine("BX_PLATFORM_XBOXONE");
// preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_ESSL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_GLSL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_HLSL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_METAL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_PSSL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_SPIRV");
preprocessor.setDefaultDefine("BGFX_SHADER_TYPE_COMPUTE");
preprocessor.setDefaultDefine("BGFX_SHADER_TYPE_FRAGMENT");
preprocessor.setDefaultDefine("BGFX_SHADER_TYPE_VERTEX");
char glslDefine[128];
bx::snprintf(glslDefine, BX_COUNTOF(glslDefine)
, "BGFX_SHADER_LANGUAGE_GLSL=%d"
, essl ? 1 : glsl
);
if (0 == bx::strCmpI(platform, "android") )
{
preprocessor.setDefine("BX_PLATFORM_ANDROID=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
}
else if (0 == bx::strCmpI(platform, "asm.js") )
{
preprocessor.setDefine("BX_PLATFORM_EMSCRIPTEN=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
}
else if (0 == bx::strCmpI(platform, "ios") )
{
preprocessor.setDefine("BX_PLATFORM_IOS=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
}
else if (0 == bx::strCmpI(platform, "linux") )
{
preprocessor.setDefine("BX_PLATFORM_LINUX=1");
if (0 != spirv)
{
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_SPIRV=1");
}
else
{
preprocessor.setDefine(glslDefine);
}
}
else if (0 == bx::strCmpI(platform, "osx") )
{
preprocessor.setDefine("BX_PLATFORM_OSX=1");
preprocessor.setDefine(glslDefine);
char temp[256];
bx::snprintf(temp, sizeof(temp), "BGFX_SHADER_LANGUAGE_METAL=%d", metal);
preprocessor.setDefine(temp);
}
else if (0 == bx::strCmpI(platform, "windows") )
{
preprocessor.setDefine("BX_PLATFORM_WINDOWS=1");
char temp[256];
bx::snprintf(temp, sizeof(temp), "BGFX_SHADER_LANGUAGE_HLSL=%d", hlsl);
preprocessor.setDefine(temp);
}
else if (0 == bx::strCmpI(platform, "xbox360") )
{
preprocessor.setDefine("BX_PLATFORM_XBOX360=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_HLSL=3");
}
else if (0 == bx::strCmpI(platform, "orbis") )
{
preprocessor.setDefine("BX_PLATFORM_PS4=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_PSSL=1");
preprocessor.setDefine("lit=lit_reserved");
}
preprocessor.setDefine("M_PI=3.1415926535897932384626433832795");
char shaderType = bx::toLower(type[0]);
switch (shaderType)
{
case 'c':
preprocessor.setDefine("BGFX_SHADER_TYPE_COMPUTE=1");
break;
case 'f':
preprocessor.setDefine("BGFX_SHADER_TYPE_FRAGMENT=1");
break;
case 'v':
preprocessor.setDefine("BGFX_SHADER_TYPE_VERTEX=1");
break;
default:
fprintf(stderr, "Unknown type: %s?!", type);
return EXIT_FAILURE;
}
bool compiled = false;
bx::FileReader reader;
if (!bx::open(&reader, filePath) )
{
fprintf(stderr, "Unable to open file '%s'.\n", filePath);
}
else
{
VaryingMap varyingMap;
std::string defaultVarying = dir + "varying.def.sc";
const char* varyingdef = cmdLine.findOption("varyingdef", defaultVarying.c_str() );
File attribdef(varyingdef);
const char* parse = attribdef.getData();
if (NULL != parse
&& *parse != '\0')
{
preprocessor.addDependency(varyingdef);
}
else
{
fprintf(stderr, "ERROR: Failed to parse varying def file: \"%s\" No input/output semantics will be generated in the code!\n", varyingdef);
}
while (NULL != parse
&& *parse != '\0')
{
parse = bx::strws(parse);
const char* eol = bx::strFind(parse, ';');
if (NULL == eol)
{
eol = bx::streol(parse);
}
if (NULL != eol)
{
const char* precision = NULL;
const char* interpolation = NULL;
const char* typen = parse;
if (0 == bx::strCmp(typen, "lowp", 4)
|| 0 == bx::strCmp(typen, "mediump", 7)
|| 0 == bx::strCmp(typen, "highp", 5) )
{
precision = typen;
typen = parse = bx::strws(bx::strword(parse) );
}
if (0 == bx::strCmp(typen, "flat", 4)
|| 0 == bx::strCmp(typen, "smooth", 6)
|| 0 == bx::strCmp(typen, "noperspective", 13)
|| 0 == bx::strCmp(typen, "centroid", 8) )
{
interpolation = typen;
typen = parse = bx::strws(bx::strword(parse) );
}
const char* name = parse = bx::strws(bx::strword(parse) );
const char* column = parse = bx::strws(bx::strword(parse) );
const char* semantics = parse = bx::strws( (*parse == ':' ? ++parse : parse) );
const char* assign = parse = bx::strws(bx::strword(parse) );
const char* init = parse = bx::strws( (*parse == '=' ? ++parse : parse) );
if (typen < eol
&& name < eol
&& column < eol
&& ':' == *column
&& semantics < eol)
{
Varying var;
if (NULL != precision)
{
var.m_precision.assign(precision, bx::strword(precision)-precision);
}
if (NULL != interpolation)
{
var.m_interpolation.assign(interpolation, bx::strword(interpolation)-interpolation);
}
var.m_type.assign(typen, bx::strword(typen)-typen);
var.m_name.assign(name, bx::strword(name)-name);
var.m_semantics.assign(semantics, bx::strword(semantics)-semantics);
if (d3d == 9
&& var.m_semantics == "BITANGENT")
{
var.m_semantics = "BINORMAL";
}
if (assign < eol
&& '=' == *assign
&& init < eol)
{
var.m_init.assign(init, eol-init);
}
varyingMap.insert(std::make_pair(var.m_name, var) );
}
parse = bx::strws(bx::strnl(eol) );
}
}
InOut shaderInputs;
InOut shaderOutputs;
uint32_t inputHash = 0;
uint32_t outputHash = 0;
char* data;
char* input;
{
const size_t padding = 4096;
uint32_t size = (uint32_t)bx::getSize(&reader);
data = new char[size+padding+1];
size = (uint32_t)bx::read(&reader, data, size);
if (data[0] == '\xef'
&& data[1] == '\xbb'
&& data[2] == '\xbf')
{
bx::memMove(data, &data[3], size-3);
size -= 3;
}
// Compiler generates "error X3000: syntax error: unexpected end of file"
// if input doesn't have empty line at EOF.
data[size] = '\n';
bx::memSet(&data[size+1], 0, padding);
bx::close(&reader);
if (!raw)
{
// To avoid commented code being recognized as used feature,
// first preprocess pass is used to strip all comments before
// substituting code.
preprocessor.run(data);
delete [] data;
size = (uint32_t)preprocessor.m_preprocessed.size();
data = new char[size+padding+1];
bx::memCopy(data, preprocessor.m_preprocessed.c_str(), size);
bx::memSet(&data[size], 0, padding+1);
}
strNormalizeEol(data);
input = const_cast<char*>(bx::strws(data) );
while (input[0] == '$')
{
const char* str = bx::strws(input+1);
const char* eol = bx::streol(str);
const char* nl = bx::strnl(eol);
input = const_cast<char*>(nl);
if (0 == bx::strCmp(str, "input", 5) )
{
str += 5;
const char* comment = bx::strFind(str, "//");
eol = NULL != comment && comment < eol ? comment : eol;
inputHash = parseInOut(shaderInputs, str, eol);
}
else if (0 == bx::strCmp(str, "output", 6) )
{
str += 6;
const char* comment = bx::strFind(str, "//");
eol = NULL != comment && comment < eol ? comment : eol;
outputHash = parseInOut(shaderOutputs, str, eol);
}
else if (0 == bx::strCmp(str, "raw", 3) )
{
raw = true;
str += 3;
}
input = const_cast<char*>(bx::strws(input) );
}
}
if (raw)
{
bx::FileWriter* writer = NULL;
if (NULL != bin2c)
{
writer = new Bin2cWriter(bin2c);
}
else
{
writer = new bx::FileWriter;
}
if (!bx::open(writer, outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
if ('f' == shaderType)
{
bx::write(writer, BGFX_CHUNK_MAGIC_FSH);
bx::write(writer, inputHash);
}
else if ('v' == shaderType)
{
bx::write(writer, BGFX_CHUNK_MAGIC_VSH);
bx::write(writer, outputHash);
}
else
{
bx::write(writer, BGFX_CHUNK_MAGIC_CSH);
bx::write(writer, outputHash);
}
if (0 != glsl)
{
bx::write(writer, uint16_t(0) );
uint32_t shaderSize = (uint32_t)bx::strLen(input);
bx::write(writer, shaderSize);
bx::write(writer, input, shaderSize);
bx::write(writer, uint8_t(0) );
compiled = true;
}
else if (0 != pssl)
{
compiled = compilePSSLShader(cmdLine, 0, input, writer);
}
else
{
compiled = compileHLSLShader(cmdLine, d3d, input, writer);
}
bx::close(writer);
delete writer;
}
else if ('c' == shaderType) // Compute
{
char* entry = const_cast<char*>(bx::strFind(input, "void main()") );
if (NULL == entry)
{
fprintf(stderr, "Shader entry point 'void main()' is not found.\n");
}
else
{
if (0 != glsl
|| 0 != essl
|| 0 != metal)
{
}
else
{
preprocessor.writef(
"#define lowp\n"
"#define mediump\n"
"#define highp\n"
"#define ivec2 int2\n"
"#define ivec3 int3\n"
"#define ivec4 int4\n"
"#define uvec2 uint2\n"
"#define uvec3 uint3\n"
"#define uvec4 uint4\n"
"#define vec2 float2\n"
"#define vec3 float3\n"
"#define vec4 float4\n"
"#define mat2 float2x2\n"
"#define mat3 float3x3\n"
"#define mat4 float4x4\n"
);
entry[4] = '_';
preprocessor.writef("#define void_main()");
preprocessor.writef(" \\\n\tvoid main(");
uint32_t arg = 0;
const bool hasLocalInvocationID = NULL != bx::strFind(input, "gl_LocalInvocationID");
const bool hasLocalInvocationIndex = NULL != bx::strFind(input, "gl_LocalInvocationIndex");
const bool hasGlobalInvocationID = NULL != bx::strFind(input, "gl_GlobalInvocationID");
const bool hasWorkGroupID = NULL != bx::strFind(input, "gl_WorkGroupID");
if (hasLocalInvocationID)
{
preprocessor.writef(
" \\\n\t%sint3 gl_LocalInvocationID : SV_GroupThreadID"
, arg++ > 0 ? ", " : " "
);
}
if (hasLocalInvocationIndex)
{
preprocessor.writef(
" \\\n\t%sint gl_LocalInvocationIndex : SV_GroupIndex"
, arg++ > 0 ? ", " : " "
);
}
if (hasGlobalInvocationID)
{
preprocessor.writef(
" \\\n\t%sint3 gl_GlobalInvocationID : SV_DispatchThreadID"
, arg++ > 0 ? ", " : " "
);
}
if (hasWorkGroupID)
{
preprocessor.writef(
" \\\n\t%sint3 gl_WorkGroupID : SV_GroupID"
, arg++ > 0 ? ", " : " "
);
}
preprocessor.writef(
" \\\n\t)\n"
);
}
if (preprocessor.run(input) )
{
BX_TRACE("Input file: %s", filePath);
BX_TRACE("Output file: %s", outFilePath);
if (preprocessOnly)
{
bx::FileWriter writer;
if (!bx::open(&writer, outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
bx::write(&writer, preprocessor.m_preprocessed.c_str(), (int32_t)preprocessor.m_preprocessed.size() );
bx::close(&writer);
return EXIT_SUCCESS;
}
{
bx::FileWriter* writer = NULL;
if (NULL != bin2c)
{
writer = new Bin2cWriter(bin2c);
}
else
{
writer = new bx::FileWriter;
}
if (!bx::open(writer, outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
bx::write(writer, BGFX_CHUNK_MAGIC_CSH);
bx::write(writer, outputHash);
if (0 != glsl
|| 0 != essl)
{
std::string code;
if (essl)
{
bx::stringPrintf(code, "#version 310 es\n");
}
else
{
bx::stringPrintf(code, "#version %d\n", glsl == 0 ? 430 : glsl);
}
code += preprocessor.m_preprocessed;
#if 1
bx::write(writer, uint16_t(0) );
uint32_t shaderSize = (uint32_t)code.size();
bx::write(writer, shaderSize);
bx::write(writer, code.c_str(), shaderSize);
bx::write(writer, uint8_t(0) );
compiled = true;
#else
compiled = compileGLSLShader(cmdLine, essl, code, writer);
#endif // 0
}
else if (0 != spirv)
{
compiled = compileSPIRVShader(cmdLine, 0, preprocessor.m_preprocessed, writer);
}
else if (0 != pssl)
{
compiled = compilePSSLShader(cmdLine, 0, preprocessor.m_preprocessed, writer);
}
else
{
compiled = compileHLSLShader(cmdLine, d3d, preprocessor.m_preprocessed, writer);
}
bx::close(writer);
delete writer;
}
if (compiled)
{
if (depends)
{
std::string ofp = outFilePath;
ofp += ".d";
bx::FileWriter writer;
if (bx::open(&writer, ofp.c_str() ) )
{
writef(&writer, "%s : %s\n", outFilePath, preprocessor.m_depends.c_str() );
bx::close(&writer);
}
}
}
}
}
}
else // Vertex/Fragment
{
char* entry = const_cast<char*>(bx::strFind(input, "void main()") );
if (NULL == entry)
{
fprintf(stderr, "Shader entry point 'void main()' is not found.\n");
}
else
{
if (0 != glsl
|| 0 != essl
|| 0 != metal)
{
if (0 == essl)
{
// bgfx shadow2D/Proj behave like EXT_shadow_samplers
// not as GLSL language 1.2 specs shadow2D/Proj.
preprocessor.writef(
"#define shadow2D(_sampler, _coord) bgfxShadow2D(_sampler, _coord).x\n"
"#define shadow2DProj(_sampler, _coord) bgfxShadow2DProj(_sampler, _coord).x\n"
);
}
for (InOut::const_iterator it = shaderInputs.begin(), itEnd = shaderInputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
const char* name = var.m_name.c_str();
if (0 == bx::strCmp(name, "a_", 2)
|| 0 == bx::strCmp(name, "i_", 2) )
{
preprocessor.writef("attribute %s %s %s %s;\n"
, var.m_precision.c_str()
, var.m_interpolation.c_str()
, var.m_type.c_str()
, name
);
}
else
{
preprocessor.writef("%s varying %s %s %s;\n"
, var.m_interpolation.c_str()
, var.m_precision.c_str()
, var.m_type.c_str()
, name
);
}
}
}
for (InOut::const_iterator it = shaderOutputs.begin(), itEnd = shaderOutputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
preprocessor.writef("%s varying %s %s;\n"
, var.m_interpolation.c_str()
, var.m_type.c_str()
, var.m_name.c_str()
);
}
}
}
else
{
preprocessor.writef(
"#define lowp\n"
"#define mediump\n"
"#define highp\n"
"#define ivec2 int2\n"
"#define ivec3 int3\n"
"#define ivec4 int4\n"
"#define uvec2 uint2\n"
"#define uvec3 uint3\n"
"#define uvec4 uint4\n"
"#define vec2 float2\n"
"#define vec3 float3\n"
"#define vec4 float4\n"
"#define mat2 float2x2\n"
"#define mat3 float3x3\n"
"#define mat4 float4x4\n"
);
if (hlsl != 0
&& hlsl < 4)
{
preprocessor.writef(
"#define centroid\n"
"#define flat\n"
"#define noperspective\n"
"#define smooth\n"
);
}
entry[4] = '_';
if ('f' == shaderType)
{
const char* insert = bx::strFind(entry, "{");
if (NULL != insert)
{
insert = strInsert(const_cast<char*>(insert+1), "\nvec4 bgfx_VoidFrag = vec4_splat(0.0);\n");
}
const bool hasFragColor = NULL != bx::strFind(input, "gl_FragColor");
const bool hasFragCoord = NULL != bx::strFind(input, "gl_FragCoord") || hlsl > 3 || hlsl == 2;
const bool hasFragDepth = NULL != bx::strFind(input, "gl_FragDepth");
const bool hasFrontFacing = NULL != bx::strFind(input, "gl_FrontFacing");
const bool hasPrimitiveId = NULL != bx::strFind(input, "gl_PrimitiveID");
bool hasFragData[8] = {};
uint32_t numFragData = 0;
for (uint32_t ii = 0; ii < BX_COUNTOF(hasFragData); ++ii)
{
char temp[32];
bx::snprintf(temp, BX_COUNTOF(temp), "gl_FragData[%d]", ii);
hasFragData[ii] = NULL != bx::strFind(input, temp);
numFragData += hasFragData[ii];
}
if (0 == numFragData)
{
// GL errors when both gl_FragColor and gl_FragData is used.
// This will trigger the same error with HLSL compiler too.
preprocessor.writef("#define gl_FragColor gl_FragData_0_\n");
// If it has gl_FragData or gl_FragColor, color target at
// index 0 exists, otherwise shader is not modifying color
// targets.
hasFragData[0] |= hasFragColor || d3d < 11;
if (NULL != insert
&& d3d < 11
&& !hasFragColor)
{
insert = strInsert(const_cast<char*>(insert+1), "\ngl_FragColor = bgfx_VoidFrag;\n");
}
}
preprocessor.writef("#define void_main()");
preprocessor.writef(" \\\n\tvoid main(");
uint32_t arg = 0;
if (hasFragCoord)
{
preprocessor.writef(" \\\n\tvec4 gl_FragCoord : SV_POSITION");
++arg;
}
for (InOut::const_iterator it = shaderInputs.begin(), itEnd = shaderInputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
preprocessor.writef(" \\\n\t%s%s %s %s : %s"
, arg++ > 0 ? ", " : " "
, interpolationDx11(var.m_interpolation.c_str() )
, var.m_type.c_str()
, var.m_name.c_str()
, var.m_semantics.c_str()
);
}
}
const uint32_t maxRT = d3d > 9 ? BX_COUNTOF(hasFragData) : 4;
for (uint32_t ii = 0; ii < BX_COUNTOF(hasFragData); ++ii)
{
if (ii < maxRT)
{
if (hasFragData[ii])
{
addFragData(preprocessor, input, ii, arg++ > 0);
}
}
else
{
voidFragData(input, ii);
}
}
if (hasFragDepth)
{
preprocessor.writef(
" \\\n\t%sout float gl_FragDepth : SV_DEPTH"
, arg++ > 0 ? ", " : " "
);
}
if (hasFrontFacing
&& hlsl >= 3)
{
preprocessor.writef(
" \\\n\t%sfloat __vface : VFACE"
, arg++ > 0 ? ", " : " "
);
}
if (hasPrimitiveId)
{
if (d3d > 9)
{
preprocessor.writef(
" \\\n\t%suint gl_PrimitiveID : SV_PrimitiveID"
, arg++ > 0 ? ", " : " "
);
}
else
{
fprintf(stderr, "gl_PrimitiveID builtin is not supported by this D3D9 HLSL.\n");
return EXIT_FAILURE;
}
}
preprocessor.writef(
" \\\n\t)\n"
);
if (hasFrontFacing)
{
if (hlsl >= 3)
{
preprocessor.writef(
"#define gl_FrontFacing (__vface <= 0.0)\n"
);
}
else
{
preprocessor.writef(
"#define gl_FrontFacing false\n"
);
}
}
}
else if ('v' == shaderType)
{
const bool hasVertexId = NULL != bx::strFind(input, "gl_VertexID");
const bool hasInstanceId = NULL != bx::strFind(input, "gl_InstanceID");
const char* brace = bx::strFind(entry, "{");
if (NULL != brace)
{
const char* end = bx::strmb(brace, '{', '}');
if (NULL != end)
{
strInsert(const_cast<char*>(end), "__RETURN__;\n");
}
}
preprocessor.writef(
"struct Output\n"
"{\n"
"\tvec4 gl_Position : SV_POSITION;\n"
"#define gl_Position _varying_.gl_Position\n"
);
for (InOut::const_iterator it = shaderOutputs.begin(), itEnd = shaderOutputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
preprocessor.writef("\t%s %s : %s;\n", var.m_type.c_str(), var.m_name.c_str(), var.m_semantics.c_str() );
preprocessor.writef("#define %s _varying_.%s\n", var.m_name.c_str(), var.m_name.c_str() );
}
}
preprocessor.writef(
"};\n"
);
preprocessor.writef("#define void_main() \\\n");
preprocessor.writef("Output main(");
uint32_t arg = 0;
for (InOut::const_iterator it = shaderInputs.begin(), itEnd = shaderInputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
preprocessor.writef(
" \\\n\t%s%s %s : %s"
, arg++ > 0 ? ", " : ""
, var.m_type.c_str()
, var.m_name.c_str()
, var.m_semantics.c_str()
);
}
}
if (hasVertexId)
{
if (d3d > 9)
{
preprocessor.writef(
" \\\n\t%suint gl_VertexID : SV_VertexID"
, arg++ > 0 ? ", " : " "
);
}
else
{
fprintf(stderr, "gl_VertexID builtin is not supported by this D3D9 HLSL.\n");
return EXIT_FAILURE;
}
}
if (hasInstanceId)
{
if (d3d > 9)
{
preprocessor.writef(
" \\\n\t%suint gl_InstanceID : SV_InstanceID"
, arg++ > 0 ? ", " : " "
);
}
else
{
fprintf(stderr, "gl_InstanceID builtin is not supported by this D3D9 HLSL.\n");
return EXIT_FAILURE;
}
}
preprocessor.writef(
") \\\n"
"{ \\\n"
"\tOutput _varying_;"
);
for (InOut::const_iterator it = shaderOutputs.begin(), itEnd = shaderOutputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
if (varyingIt != varyingMap.end() )
{
const Varying& var = varyingIt->second;
preprocessor.writef(" \\\n\t%s", var.m_name.c_str() );
if (!var.m_init.empty() )
{
preprocessor.writef(" = %s", var.m_init.c_str() );
}
preprocessor.writef(";");
}
}
preprocessor.writef(
"\n#define __RETURN__ \\\n"
"\t} \\\n"
);
if (hlsl != 0
&& hlsl <= 3)
{
// preprocessor.writef(
// "\tgl_Position.xy += u_viewTexel.xy * gl_Position.w; \\\n"
// );
}
preprocessor.writef(
"\treturn _varying_"
);
}
}
if (preprocessor.run(input) )
{
BX_TRACE("Input file: %s", filePath);
BX_TRACE("Output file: %s", outFilePath);
if (preprocessOnly)
{
bx::FileWriter writer;
if (!bx::open(&writer, outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
if (0 != glsl)
{
if (NULL == profile)
{
writef(&writer
, "#ifdef GL_ES\n"
"precision highp float;\n"
"#endif // GL_ES\n\n"
);
}
}
bx::write(&writer, preprocessor.m_preprocessed.c_str(), (int32_t)preprocessor.m_preprocessed.size() );
bx::close(&writer);
return EXIT_SUCCESS;
}
{
bx::FileWriter* writer = NULL;
if (NULL != bin2c)
{
writer = new Bin2cWriter(bin2c);
}
else
{
writer = new bx::FileWriter;
}
if (!bx::open(writer, outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
if ('f' == shaderType)
{
bx::write(writer, BGFX_CHUNK_MAGIC_FSH);
bx::write(writer, inputHash);
}
else if ('v' == shaderType)
{
bx::write(writer, BGFX_CHUNK_MAGIC_VSH);
bx::write(writer, outputHash);
}
else
{
bx::write(writer, BGFX_CHUNK_MAGIC_CSH);
bx::write(writer, outputHash);
}
if (0 != glsl
|| 0 != essl
|| 0 != metal)
{
std::string code;
if (glsl < 400)
{
const bool usesTextureLod = false
|| !!bx::findIdentifierMatch(input, s_ARB_shader_texture_lod)
|| !!bx::findIdentifierMatch(input, s_EXT_shader_texture_lod)
;
const bool usesInstanceID = !!bx::strFind(input, "gl_InstanceID");
const bool usesGpuShader4 = !!bx::findIdentifierMatch(input, s_EXT_gpu_shader4);
const bool usesGpuShader5 = !!bx::findIdentifierMatch(input, s_ARB_gpu_shader5);
const bool usesTexelFetch = !!bx::findIdentifierMatch(input, s_texelFetch);
const bool usesTextureMS = !!bx::findIdentifierMatch(input, s_ARB_texture_multisample);
const bool usesTextureArray = !!bx::findIdentifierMatch(input, s_textureArray);
const bool usesPacking = !!bx::findIdentifierMatch(input, s_ARB_shading_language_packing);
if (0 == essl)
{
const bool need130 = 120 == glsl && (false
|| bx::findIdentifierMatch(input, s_130)
|| usesTexelFetch
);
if (0 != metal)
{
bx::stringPrintf(code, "#version 120\n");
}
else
{
bx::stringPrintf(code, "#version %s\n", need130 ? "130" : profile);
glsl = 130;
}
if (usesInstanceID)
{
bx::stringPrintf(code
, "#extension GL_ARB_draw_instanced : enable\n"
);
}
if (usesGpuShader4)
{
bx::stringPrintf(code
, "#extension GL_EXT_gpu_shader4 : enable\n"
);
}
if (usesGpuShader5)
{
bx::stringPrintf(code
, "#extension GL_ARB_gpu_shader5 : enable\n"
);
}
if (usesPacking)
{
bx::stringPrintf(code
, "#extension GL_ARB_shading_language_packing : enable\n"
);
}
bool ARB_shader_texture_lod = false;
bool EXT_shader_texture_lod = false;
if (usesTextureLod)
{
if ('f' == shaderType)
{
ARB_shader_texture_lod = true;
bx::stringPrintf(code
, "#extension GL_ARB_shader_texture_lod : enable\n"
);
}
else
{
EXT_shader_texture_lod = true;
bx::stringPrintf(code
, "#extension GL_EXT_shader_texture_lod : enable\n"
);
}
}
if (usesTextureMS)
{
bx::stringPrintf(code
, "#extension GL_ARB_texture_multisample : enable\n"
);
}
if (usesTextureArray)
{
bx::stringPrintf(code
, "#extension GL_EXT_texture_array : enable\n"
);
}
if (130 > glsl)
{
bx::stringPrintf(code,
"#define ivec2 vec2\n"
"#define ivec3 vec3\n"
"#define ivec4 vec4\n"
);
}
if (ARB_shader_texture_lod)
{
bx::stringPrintf(code,
"#define texture2DProjLod texture2DProjLodARB\n"
"#define texture2DGrad texture2DGradARB\n"
"#define texture2DProjGrad texture2DProjGradARB\n"
"#define textureCubeGrad textureCubeGradARB\n"
);
}
else if (EXT_shader_texture_lod)
{
bx::stringPrintf(code,
"#define texture2DProjLod texture2DProjLodEXT\n"
"#define texture2DGrad texture2DGradEXT\n"
"#define texture2DProjGrad texture2DProjGradEXT\n"
"#define textureCubeGrad textureCubeGradEXT\n"
);
}
bx::stringPrintf(code
, "#define bgfxShadow2D shadow2D\n"
"#define bgfxShadow2DProj shadow2DProj\n"
);
}
else
{
// Pretend that all extensions are available.
// This will be stripped later.
if (usesTextureLod)
{
bx::stringPrintf(code
, "#extension GL_EXT_shader_texture_lod : enable\n"
"#define texture2DLod texture2DLodEXT\n"
"#define texture2DGrad texture2DGradEXT\n"
"#define texture2DProjLod texture2DProjLodEXT\n"
"#define texture2DProjGrad texture2DProjGradEXT\n"
"#define textureCubeLod textureCubeLodEXT\n"
"#define textureCubeGrad textureCubeGradEXT\n"
);
}
if (NULL != bx::findIdentifierMatch(input, s_OES_standard_derivatives) )
{
bx::stringPrintf(code, "#extension GL_OES_standard_derivatives : enable\n");
}
if (NULL != bx::findIdentifierMatch(input, s_OES_texture_3D) )
{
bx::stringPrintf(code, "#extension GL_OES_texture_3D : enable\n");
}
if (NULL != bx::findIdentifierMatch(input, s_EXT_shadow_samplers) )
{
bx::stringPrintf(code
, "#extension GL_EXT_shadow_samplers : enable\n"
"#define shadow2D shadow2DEXT\n"
"#define shadow2DProj shadow2DProjEXT\n"
);
}
if (usesGpuShader5)
{
bx::stringPrintf(code
, "#extension GL_ARB_gpu_shader5 : enable\n"
);
}
if (usesPacking)
{
bx::stringPrintf(code
, "#extension GL_ARB_shading_language_packing : enable\n"
);
}
if (NULL != bx::findIdentifierMatch(input, "gl_FragDepth") )
{
bx::stringPrintf(code
, "#extension GL_EXT_frag_depth : enable\n"
"#define gl_FragDepth gl_FragDepthEXT\n"
);
}
if (usesTextureArray)
{
bx::stringPrintf(code
, "#extension GL_EXT_texture_array : enable\n"
);
}
bx::stringPrintf(code,
"#define ivec2 vec2\n"
"#define ivec3 vec3\n"
"#define ivec4 vec4\n"
);
}
}
else
{
bx::stringPrintf(code, "#version %d\n", glsl);
}
code += preprocessor.m_preprocessed;
if (glsl > 400)
{
bx::write(writer, uint16_t(0) );
uint32_t shaderSize = (uint32_t)code.size();
bx::write(writer, shaderSize);
bx::write(writer, code.c_str(), shaderSize);
bx::write(writer, uint8_t(0) );
compiled = true;
}
else
{
compiled = compileGLSLShader(cmdLine
, metal ? BX_MAKEFOURCC('M', 'T', 'L', 0) : essl
, code
, writer
);
}
}
else if (0 != spirv)
{
compiled = compileSPIRVShader(cmdLine
, 0
, preprocessor.m_preprocessed
, writer
);
}
else if (0 != pssl)
{
compiled = compilePSSLShader(cmdLine
, 0
, preprocessor.m_preprocessed
, writer
);
}
else
{
compiled = compileHLSLShader(cmdLine
, d3d
, preprocessor.m_preprocessed
, writer
);
}
bx::close(writer);
delete writer;
}
if (compiled)
{
if (depends)
{
std::string ofp = outFilePath;
ofp += ".d";
bx::FileWriter writer;
if (bx::open(&writer, ofp.c_str() ) )
{
writef(&writer, "%s : %s\n", outFilePath, preprocessor.m_depends.c_str() );
bx::close(&writer);
}
}
}
}
}
}
delete [] data;
}
if (compiled)
{
return EXIT_SUCCESS;
}
remove(outFilePath);
fprintf(stderr, "Failed to build shader.\n");
return EXIT_FAILURE;
}
} // namespace bgfx
int main(int _argc, const char* _argv[])
{
return bgfx::compileShader(_argc, _argv);
}