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bgfx/tools/shaderc/shaderc.cpp
Branimir Karadžić 771909c988 Fixed issue #74.
2014-02-13 22:13:19 -08:00

2231 lines
51 KiB
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/*
* Copyright 2011-2014 Branimir Karadzic. All rights reserved.
* License: http://www.opensource.org/licenses/BSD-2-Clause
*/
#ifndef SHADERC_DEBUG
# define SHADERC_DEBUG 0
#endif // SHADERC_DEBUG
#define _BX_TRACE(_format, ...) \
do { \
fprintf(stderr, BX_FILE_LINE_LITERAL "" _format "\n", ##__VA_ARGS__); \
} while(0)
#define _BX_WARN(_condition, _format, ...) \
do { \
if (!(_condition) ) \
{ \
BX_TRACE("WARN " _format, ##__VA_ARGS__); \
} \
} while(0)
#define _BX_CHECK(_condition, _format, ...) \
do { \
if (!(_condition) ) \
{ \
BX_TRACE("CHECK " _format, ##__VA_ARGS__); \
bx::debugBreak(); \
} \
} while(0)
#if SHADERC_DEBUG
# define BX_TRACE _BX_TRACE
# define BX_WARN _BX_WARN
# define BX_CHECK _BX_CHECK
#endif // DEBUG
#include <bx/bx.h>
#include <bx/debug.h>
#define NOMINMAX
#include <alloca.h>
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include <string.h>
#include <algorithm>
#include <string>
#include <vector>
#include <unordered_map>
#define MAX_TAGS 256
extern "C"
{
#include <fpp.h>
} // extern "C"
#define BGFX_CHUNK_MAGIC_VSH BX_MAKEFOURCC('V', 'S', 'H', 0x1)
#define BGFX_CHUNK_MAGIC_FSH BX_MAKEFOURCC('F', 'S', 'H', 0x1)
#include <bx/commandline.h>
#include <bx/endian.h>
#include <bx/uint32_t.h>
#include <bx/readerwriter.h>
#include <bx/string.h>
#include <bx/hash.h>
#include "glsl_optimizer.h"
#if BX_PLATFORM_WINDOWS
# include <sal.h>
# define __D3DX9MATH_INL__ // not used and MinGW complains about type-punning
# include <d3dx9.h>
# include <d3dcompiler.h>
#endif // BX_PLATFORM_WINDOWS
long int fsize(FILE* _file)
{
long int pos = ftell(_file);
fseek(_file, 0L, SEEK_END);
long int size = ftell(_file);
fseek(_file, pos, SEEK_SET);
return size;
}
struct Attrib
{
enum Enum
{
Position = 0,
Normal,
Tangent,
Color0,
Color1,
Indices,
Weight,
TexCoord0,
TexCoord1,
TexCoord2,
TexCoord3,
TexCoord4,
TexCoord5,
TexCoord6,
TexCoord7,
Count,
};
};
static const char* s_ARB_shader_texture_lod[] =
{
"texture2DLod",
"texture2DProjLod",
"texture3DLod",
"texture3DProjLod",
"textureCubeLod",
"shadow2DLod",
"shadow2DProjLod",
NULL
// "texture1DLod",
// "texture1DProjLod",
// "shadow1DLod",
// "shadow1DProjLod",
};
static const char* s_EXT_shadow_samplers[] =
{
"shadow2D",
"shadow2DProj",
NULL
};
static const char* s_OES_standard_derivatives[] =
{
"dFdx",
"dFdy",
"fwidth",
NULL
};
static const char* s_OES_texture_3D[] =
{
"texture3D",
"texture3DProj",
"texture3DLod",
"texture3DProjLod",
NULL
};
struct RemapInputSemantic
{
Attrib::Enum m_attr;
const char* m_name;
uint8_t m_index;
};
static const RemapInputSemantic s_remapInputSemantic[Attrib::Count+1] =
{
{ Attrib::Position, "POSITION", 0 },
{ Attrib::Normal, "NORMAL", 0 },
{ Attrib::Tangent, "TANGENT", 0 },
{ Attrib::Color0, "COLOR", 0 },
{ Attrib::Color1, "COLOR", 1 },
{ Attrib::Indices, "BLENDINDICES", 0 },
{ Attrib::Weight, "BLENDWEIGHT", 0 },
{ Attrib::TexCoord0, "TEXCOORD", 0 },
{ Attrib::TexCoord1, "TEXCOORD", 1 },
{ Attrib::TexCoord2, "TEXCOORD", 2 },
{ Attrib::TexCoord3, "TEXCOORD", 3 },
{ Attrib::TexCoord4, "TEXCOORD", 4 },
{ Attrib::TexCoord5, "TEXCOORD", 5 },
{ Attrib::TexCoord6, "TEXCOORD", 6 },
{ Attrib::TexCoord7, "TEXCOORD", 7 },
{ Attrib::Count, "", 0 },
};
const RemapInputSemantic& findInputSemantic(const char* _name, uint8_t _index)
{
for (uint32_t ii = 0; ii < Attrib::Count; ++ii)
{
const RemapInputSemantic& ris = s_remapInputSemantic[ii];
if (0 == strcmp(ris.m_name, _name)
&& ris.m_index == _index)
{
return ris;
}
}
return s_remapInputSemantic[Attrib::Count];
}
struct ConstantType
{
enum Enum
{
Uniform1i,
Uniform1f,
End,
Uniform1iv,
Uniform1fv,
Uniform2fv,
Uniform3fv,
Uniform4fv,
Uniform3x3fv,
Uniform4x4fv,
Count,
};
};
#define BGFX_UNIFORM_FRAGMENTBIT UINT8_C(0x10)
const char* s_constantTypeName[ConstantType::Count] =
{
"int",
"float",
NULL,
"int",
"float",
"float2",
"float3",
"float4",
"float3x3",
"float4x4",
};
struct Uniform
{
std::string name;
ConstantType::Enum type;
uint8_t num;
uint16_t regIndex;
uint16_t regCount;
};
typedef std::vector<Uniform> UniformArray;
#if BX_PLATFORM_WINDOWS
struct ConstRemapDx9
{
ConstantType::Enum id;
D3DXPARAMETER_CLASS paramClass;
D3DXPARAMETER_TYPE paramType;
uint32_t paramBytes;
};
static const ConstRemapDx9 s_constRemapDx9[7] =
{
{ ConstantType::Uniform1iv, D3DXPC_SCALAR, D3DXPT_INT, 4 },
{ ConstantType::Uniform1fv, D3DXPC_SCALAR, D3DXPT_FLOAT, 4 },
{ ConstantType::Uniform2fv, D3DXPC_VECTOR, D3DXPT_FLOAT, 8 },
{ ConstantType::Uniform3fv, D3DXPC_VECTOR, D3DXPT_FLOAT, 12 },
{ ConstantType::Uniform4fv, D3DXPC_VECTOR, D3DXPT_FLOAT, 16 },
{ ConstantType::Uniform3x3fv, D3DXPC_MATRIX_COLUMNS, D3DXPT_FLOAT, 36 },
{ ConstantType::Uniform4x4fv, D3DXPC_MATRIX_COLUMNS, D3DXPT_FLOAT, 64 },
};
ConstantType::Enum findConstantTypeDx9(const D3DXCONSTANT_DESC& constDesc)
{
uint32_t count = sizeof(s_constRemapDx9)/sizeof(ConstRemapDx9);
for (uint32_t ii = 0; ii < count; ++ii)
{
const ConstRemapDx9& remap = s_constRemapDx9[ii];
if (remap.paramClass == constDesc.Class
&& remap.paramType == constDesc.Type
&& (constDesc.Bytes%remap.paramBytes) == 0)
{
return remap.id;
}
}
return ConstantType::Count;
}
static uint32_t s_optimizationLevelDx9[4] =
{
D3DXSHADER_OPTIMIZATION_LEVEL0,
D3DXSHADER_OPTIMIZATION_LEVEL1,
D3DXSHADER_OPTIMIZATION_LEVEL2,
D3DXSHADER_OPTIMIZATION_LEVEL3,
};
struct ConstRemapDx11
{
ConstantType::Enum id;
D3D_SHADER_VARIABLE_CLASS paramClass;
D3D_SHADER_VARIABLE_TYPE paramType;
uint32_t paramBytes;
};
static const ConstRemapDx11 s_constRemapDx11[7] =
{
{ ConstantType::Uniform1iv, D3D_SVC_SCALAR, D3D_SVT_INT, 4 },
{ ConstantType::Uniform1fv, D3D_SVC_SCALAR, D3D_SVT_FLOAT, 4 },
{ ConstantType::Uniform2fv, D3D_SVC_VECTOR, D3D_SVT_FLOAT, 8 },
{ ConstantType::Uniform3fv, D3D_SVC_VECTOR, D3D_SVT_FLOAT, 12 },
{ ConstantType::Uniform4fv, D3D_SVC_VECTOR, D3D_SVT_FLOAT, 16 },
{ ConstantType::Uniform3x3fv, D3D_SVC_MATRIX_COLUMNS, D3D_SVT_FLOAT, 36 },
{ ConstantType::Uniform4x4fv, D3D_SVC_MATRIX_COLUMNS, D3D_SVT_FLOAT, 64 },
};
ConstantType::Enum findConstantTypeDx11(const D3D11_SHADER_TYPE_DESC& constDesc, uint32_t _size)
{
uint32_t count = sizeof(s_constRemapDx11)/sizeof(ConstRemapDx9);
for (uint32_t ii = 0; ii < count; ++ii)
{
const ConstRemapDx11& remap = s_constRemapDx11[ii];
if (remap.paramClass == constDesc.Class
&& remap.paramType == constDesc.Type
&& (_size%remap.paramBytes) == 0)
{
return remap.id;
}
}
return ConstantType::Count;
}
static uint32_t s_optimizationLevelDx11[4] =
{
D3DCOMPILE_OPTIMIZATION_LEVEL0,
D3DCOMPILE_OPTIMIZATION_LEVEL1,
D3DCOMPILE_OPTIMIZATION_LEVEL2,
D3DCOMPILE_OPTIMIZATION_LEVEL3,
};
#endif // BX_PLATFORM_WINDOWS
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::CrtFileWriter
{
public:
Bin2cWriter(const char* _name)
: m_name(_name)
{
}
virtual ~Bin2cWriter()
{
}
virtual int32_t close() BX_OVERRIDE
{
generate();
return bx::CrtFileWriter::close();
}
virtual int32_t write(const void* _data, int32_t _size) 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);
}
int32_t size = bx::CrtFileWriter::write(out, len);
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_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)
{
FILE* file = fopen(_filePath, "r");
if (NULL != file)
{
m_size = fsize(file);
m_data = new char[m_size+1];
m_size = (uint32_t)fread(m_data, 1, m_size, file);
m_data[m_size] = '\0';
fclose(file);
}
}
~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;
};
void strins(char* _str, const char* _insert)
{
size_t len = strlen(_insert);
memmove(&_str[len], _str, strlen(_str) );
memcpy(_str, _insert, len);
}
void strreplace(char* _str, const char* _find, const char* _replace)
{
const size_t len = strlen(_find);
char* replace = (char*)alloca(len+1);
bx::strlcpy(replace, _replace, len+1);
for (uint32_t ii = strlen(replace); ii < len; ++ii)
{
replace[ii] = ' ';
}
replace[len] = '\0';
BX_CHECK(len >= strlen(_replace), "");
for (char* ptr = strstr(_str, _find); NULL != ptr; ptr = strstr(ptr + len, _find) )
{
memcpy(ptr, replace, len);
}
}
class LineReader
{
public:
LineReader(const char* _str)
: m_str(_str)
, m_pos(0)
, m_size( (uint32_t)strlen(_str) )
{
}
std::string getLine()
{
const char* str = &m_str[m_pos];
skipLine();
const char* eol = &m_str[m_pos];
std::string tmp;
tmp.assign(str, eol-str);
return tmp;
}
bool isEof() const
{
return m_str[m_pos] == '\0';
}
void skipLine()
{
const char* str = &m_str[m_pos];
const char* nl = bx::strnl(str);
m_pos += (uint32_t)(nl - str);
}
const char* m_str;
uint32_t m_pos;
uint32_t m_size;
};
void printCode(const char* _code, int32_t _line = 0, int32_t _start = 0, int32_t _end = INT32_MAX)
{
fprintf(stderr, "Code:\n---\n");
LineReader lr(_code);
for (int32_t line = 1; !lr.isEof() && line < _end; ++line)
{
if (line >= _start)
{
fprintf(stderr, "%s%3d: %s", _line == line ? ">>> " : " ", line, lr.getLine().c_str() );
}
else
{
lr.skipLine();
}
}
fprintf(stderr, "---\n");
}
void writeFile(const char* _filePath, const void* _data, int32_t _size)
{
bx::CrtFileWriter out;
if (0 == out.open(_filePath) )
{
out.write(_data, _size);
out.close();
}
}
bool compileGLSLShader(bx::CommandLine& _cmdLine, uint32_t _gles, const std::string& _code, bx::WriterI* _writer)
{
const glslopt_shader_type type = tolower(_cmdLine.findOption('\0', "type")[0]) == 'f' ? kGlslOptShaderFragment : kGlslOptShaderVertex;
glslopt_target target = kGlslTargetOpenGL;
switch (_gles)
{
case 2:
target = kGlslTargetOpenGLES20;
break;
case 3:
target = kGlslTargetOpenGLES30;
break;
default:
target = kGlslTargetOpenGL;
break;
}
glslopt_ctx* ctx = glslopt_initialize(target);
glslopt_shader* shader = glslopt_optimize(ctx, type, _code.c_str(), 0);
if (!glslopt_get_status(shader) )
{
const char* log = glslopt_get_log(shader);
int32_t source = 0;
int32_t line = 0;
int32_t column = 0;
int32_t start = 0;
int32_t end = INT32_MAX;
if (3 == sscanf(log, "%u:%u(%u):", &source, &line, &column)
&& 0 != line)
{
start = bx::uint32_imax(1, line-10);
end = start + 20;
}
printCode(_code.c_str(), line, start, end);
fprintf(stderr, "Error: %s\n", log);
glslopt_cleanup(ctx);
return false;
}
const char* optimizedShader = glslopt_get_output(shader);
// Trim all directives.
while ('#' == *optimizedShader)
{
optimizedShader = bx::strnl(optimizedShader);
}
if (0 != _gles)
{
char* shader = const_cast<char*>(optimizedShader);
strreplace(shader, "gl_FragDepthEXT", "gl_FragDepth");
strreplace(shader, "texture2DLodEXT", "texture2DLod");
strreplace(shader, "texture2DProjLodEXT", "texture2DProjLod");
strreplace(shader, "textureCubeLodEXT", "textureCubeLod");
strreplace(shader, "texture2DGradEXT", "texture2DGrad");
strreplace(shader, "texture2DProjGradEXT", "texture2DProjGrad");
strreplace(shader, "textureCubeGradEXT", "textureCubeGrad");
strreplace(shader, "shadow2DEXT", "shadow2D");
strreplace(shader, "shadow2DProjEXT", "shadow2DProj");
}
bx::write(_writer, optimizedShader, (int32_t)strlen(optimizedShader) );
uint8_t nul = 0;
bx::write(_writer, nul);
glslopt_cleanup(ctx);
return true;
}
bool compileHLSLShaderDx9(bx::CommandLine& _cmdLine, const std::string& _code, bx::WriterI* _writer)
{
#if BX_PLATFORM_WINDOWS
const char* profile = _cmdLine.findOption('p', "profile");
if (NULL == profile)
{
fprintf(stderr, "Shader profile must be specified.\n");
return false;
}
bool debug = _cmdLine.hasArg('\0', "debug");
uint32_t flags = 0;
flags |= debug ? D3DXSHADER_DEBUG : 0;
flags |= _cmdLine.hasArg('\0', "avoid-flow-control") ? D3DXSHADER_AVOID_FLOW_CONTROL : 0;
flags |= _cmdLine.hasArg('\0', "no-preshader") ? D3DXSHADER_NO_PRESHADER : 0;
flags |= _cmdLine.hasArg('\0', "partial-precision") ? D3DXSHADER_PARTIALPRECISION : 0;
flags |= _cmdLine.hasArg('\0', "prefer-flow-control") ? D3DXSHADER_PREFER_FLOW_CONTROL : 0;
flags |= _cmdLine.hasArg('\0', "backwards-compatibility") ? D3DXSHADER_ENABLE_BACKWARDS_COMPATIBILITY : 0;
bool werror = _cmdLine.hasArg('\0', "Werror");
uint32_t optimization = 3;
if (_cmdLine.hasArg(optimization, 'O') )
{
optimization = bx::uint32_min(optimization, BX_COUNTOF(s_optimizationLevelDx9)-1);
flags |= s_optimizationLevelDx9[optimization];
}
else
{
flags |= D3DXSHADER_SKIPOPTIMIZATION;
}
BX_TRACE("Profile: %s", profile);
BX_TRACE("Flags: 0x%08x", flags);
LPD3DXBUFFER code;
LPD3DXBUFFER errorMsg;
LPD3DXCONSTANTTABLE constantTable;
HRESULT hr;
// Output preprocessed shader so that HLSL can be debugged via GPA
// or PIX. Compiling through memory won't embed preprocessed shader
// file path.
if (debug)
{
std::string hlslfp = _cmdLine.findOption('o');
hlslfp += ".hlsl";
writeFile(hlslfp.c_str(), _code.c_str(), (int32_t)_code.size() );
hr = D3DXCompileShaderFromFileA(hlslfp.c_str()
, NULL
, NULL
, "main"
, profile
, flags
, &code
, &errorMsg
, &constantTable
);
}
else
{
hr = D3DXCompileShader(_code.c_str()
, (uint32_t)_code.size()
, NULL
, NULL
, "main"
, profile
, flags
, &code
, &errorMsg
, &constantTable
);
}
if (FAILED(hr)
|| (werror && NULL != errorMsg) )
{
const char* log = (const char*)errorMsg->GetBufferPointer();
char source[1024];
int32_t line = 0;
int32_t column = 0;
int32_t start = 0;
int32_t end = INT32_MAX;
if (3 == sscanf(log, "%[^(](%u,%u):", source, &line, &column)
&& 0 != line)
{
start = bx::uint32_imax(1, line-10);
end = start + 20;
}
printCode(_code.c_str(), line, start, end);
fprintf(stderr, "Error: 0x%08x %s\n", (uint32_t)hr, log);
errorMsg->Release();
return false;
}
D3DXCONSTANTTABLE_DESC desc;
hr = constantTable->GetDesc(&desc);
if (FAILED(hr) )
{
fprintf(stderr, "Error 0x%08x\n", (uint32_t)hr);
return false;
}
BX_TRACE("Creator: %s 0x%08x", desc.Creator, (uint32_t /*mingw warning*/)desc.Version);
BX_TRACE("Num constants: %d", desc.Constants);
BX_TRACE("# cl ty RxC S By Name");
UniformArray uniforms;
for (uint32_t ii = 0; ii < desc.Constants; ++ii)
{
D3DXHANDLE handle = constantTable->GetConstant(NULL, ii);
D3DXCONSTANT_DESC constDesc;
uint32_t count;
constantTable->GetConstantDesc(handle, &constDesc, &count);
BX_TRACE("%3d %2d %2d [%dx%d] %d %3d %s[%d] c%d (%d)"
, ii
, constDesc.Class
, constDesc.Type
, constDesc.Rows
, constDesc.Columns
, constDesc.StructMembers
, constDesc.Bytes
, constDesc.Name
, constDesc.Elements
, constDesc.RegisterIndex
, constDesc.RegisterCount
);
ConstantType::Enum type = findConstantTypeDx9(constDesc);
if (ConstantType::Count != type)
{
Uniform un;
un.name = '$' == constDesc.Name[0] ? constDesc.Name+1 : constDesc.Name;
un.type = type;
un.num = constDesc.Elements;
un.regIndex = constDesc.RegisterIndex;
un.regCount = constDesc.RegisterCount;
uniforms.push_back(un);
}
}
uint16_t count = (uint16_t)uniforms.size();
bx::write(_writer, count);
uint32_t fragmentBit = profile[0] == 'p' ? BGFX_UNIFORM_FRAGMENTBIT : 0;
for (UniformArray::const_iterator it = uniforms.begin(); it != uniforms.end(); ++it)
{
const Uniform& un = *it;
uint8_t nameSize = (uint8_t)un.name.size();
bx::write(_writer, nameSize);
bx::write(_writer, un.name.c_str(), nameSize);
uint8_t type = un.type|fragmentBit;
bx::write(_writer, type);
bx::write(_writer, un.num);
bx::write(_writer, un.regIndex);
bx::write(_writer, un.regCount);
BX_TRACE("%s, %s, %d, %d, %d"
, un.name.c_str()
, s_constantTypeName[un.type]
, un.num
, un.regIndex
, un.regCount
);
}
uint16_t shaderSize = (uint16_t)code->GetBufferSize();
bx::write(_writer, shaderSize);
bx::write(_writer, code->GetBufferPointer(), shaderSize);
uint8_t nul = 0;
bx::write(_writer, nul);
if (_cmdLine.hasArg('\0', "disasm") )
{
LPD3DXBUFFER disasm;
D3DXDisassembleShader( (const DWORD*)code->GetBufferPointer()
, false
, NULL
, &disasm
);
if (NULL != disasm)
{
std::string disasmfp = _cmdLine.findOption('o');
disasmfp += ".disasm";
writeFile(disasmfp.c_str(), disasm->GetBufferPointer(), disasm->GetBufferSize() );
disasm->Release();
}
}
if (NULL != code)
{
code->Release();
}
if (NULL != errorMsg)
{
errorMsg->Release();
}
if (NULL != constantTable)
{
constantTable->Release();
}
return true;
#else
BX_UNUSED(_cmdLine, _code, _writer);
fprintf(stderr, "HLSL compiler is not supported on this platform.\n");
return false;
#endif // BX_PLATFORM_WINDOWS
}
bool compileHLSLShaderDx11(bx::CommandLine& _cmdLine, const std::string& _code, bx::WriterI* _writer)
{
#if BX_PLATFORM_WINDOWS
const char* profile = _cmdLine.findOption('p', "profile");
if (NULL == profile)
{
fprintf(stderr, "Shader profile must be specified.\n");
return false;
}
bool debug = _cmdLine.hasArg('\0', "debug");
uint32_t flags = D3DCOMPILE_ENABLE_BACKWARDS_COMPATIBILITY;
flags |= debug ? D3DCOMPILE_DEBUG : 0;
flags |= _cmdLine.hasArg('\0', "avoid-flow-control") ? D3DCOMPILE_AVOID_FLOW_CONTROL : 0;
flags |= _cmdLine.hasArg('\0', "no-preshader") ? D3DCOMPILE_NO_PRESHADER : 0;
flags |= _cmdLine.hasArg('\0', "partial-precision") ? D3DCOMPILE_PARTIAL_PRECISION : 0;
flags |= _cmdLine.hasArg('\0', "prefer-flow-control") ? D3DCOMPILE_PREFER_FLOW_CONTROL : 0;
flags |= _cmdLine.hasArg('\0', "backwards-compatibility") ? D3DCOMPILE_ENABLE_BACKWARDS_COMPATIBILITY : 0;
bool werror = _cmdLine.hasArg('\0', "Werror");
if (werror)
{
flags |= D3DCOMPILE_WARNINGS_ARE_ERRORS;
}
uint32_t optimization = 3;
if (_cmdLine.hasArg(optimization, 'O') )
{
optimization = bx::uint32_min(optimization, BX_COUNTOF(s_optimizationLevelDx11)-1);
flags |= s_optimizationLevelDx11[optimization];
}
else
{
flags |= D3DCOMPILE_SKIP_OPTIMIZATION;
}
BX_TRACE("Profile: %s", profile);
BX_TRACE("Flags: 0x%08x", flags);
ID3DBlob* code;
ID3DBlob* errorMsg;
// Output preprocessed shader so that HLSL can be debugged via GPA
// or PIX. Compiling through memory won't embed preprocessed shader
// file path.
std::string hlslfp;
if (debug)
{
hlslfp = _cmdLine.findOption('o');
hlslfp += ".hlsl";
writeFile(hlslfp.c_str(), _code.c_str(), (int32_t)_code.size() );
}
HRESULT hr = D3DCompile(_code.c_str()
, _code.size()
, hlslfp.c_str()
, NULL
, NULL
, "main"
, profile
, flags
, 0
, &code
, &errorMsg
);
if (FAILED(hr)
|| (werror && NULL != errorMsg) )
{
const char* log = (char*)errorMsg->GetBufferPointer();
int32_t line = 0;
int32_t column = 0;
int32_t start = 0;
int32_t end = INT32_MAX;
if (2 == sscanf(log, "(%u,%u):", &line, &column)
&& 0 != line)
{
start = bx::uint32_imax(1, line-10);
end = start + 20;
}
printCode(_code.c_str(), line, start, end);
fprintf(stderr, "Error: 0x%08x %s\n", (uint32_t)hr, log);
errorMsg->Release();
return false;
}
UniformArray uniforms;
ID3D11ShaderReflection* reflect = NULL;
hr = D3DReflect(code->GetBufferPointer()
, code->GetBufferSize()
, IID_ID3D11ShaderReflection
, (void**)&reflect
);
if (FAILED(hr) )
{
fprintf(stderr, "Error: 0x%08x\n", (uint32_t)hr);
return false;
}
D3D11_SHADER_DESC desc;
hr = reflect->GetDesc(&desc);
if (FAILED(hr) )
{
fprintf(stderr, BX_FILE_LINE_LITERAL "Error: 0x%08x\n", (uint32_t)hr);
return false;
}
BX_TRACE("Creator: %s 0x%08x", desc.Creator, desc.Version);
BX_TRACE("Num constant buffers: %d", desc.ConstantBuffers);
BX_TRACE("Input:");
uint8_t attrMask[Attrib::Count];
memset(attrMask, 0, sizeof(attrMask) );
for (uint32_t ii = 0; ii < desc.InputParameters; ++ii)
{
D3D11_SIGNATURE_PARAMETER_DESC spd;
reflect->GetInputParameterDesc(ii, &spd);
BX_TRACE("\t%2d: %s%d, vt %d, ct %d, mask %x, reg %d"
, ii
, spd.SemanticName
, spd.SemanticIndex
, spd.SystemValueType
, spd.ComponentType
, spd.Mask
, spd.Register
);
const RemapInputSemantic& ris = findInputSemantic(spd.SemanticName, spd.SemanticIndex);
if (ris.m_attr != Attrib::Count)
{
attrMask[ris.m_attr] = 0xff;
}
}
bx::write(_writer, attrMask, sizeof(attrMask) );
BX_TRACE("Output:");
for (uint32_t ii = 0; ii < desc.OutputParameters; ++ii)
{
D3D11_SIGNATURE_PARAMETER_DESC spd;
reflect->GetOutputParameterDesc(ii, &spd);
BX_TRACE("\t%2d: %s%d, %d, %d", ii, spd.SemanticName, spd.SemanticIndex, spd.SystemValueType, spd.ComponentType);
}
uint16_t size = 0;
for (uint32_t ii = 0; ii < bx::uint32_min(1, desc.ConstantBuffers); ++ii)
{
ID3D11ShaderReflectionConstantBuffer* cbuffer = reflect->GetConstantBufferByIndex(ii);
D3D11_SHADER_BUFFER_DESC bufferDesc;
hr = cbuffer->GetDesc(&bufferDesc);
size = (uint16_t)bufferDesc.Size;
if (SUCCEEDED(hr) )
{
BX_TRACE("%s, %d, vars %d, size %d"
, bufferDesc.Name
, bufferDesc.Type
, bufferDesc.Variables
, bufferDesc.Size
);
for (uint32_t jj = 0; jj < bufferDesc.Variables; ++jj)
{
ID3D11ShaderReflectionVariable* var = cbuffer->GetVariableByIndex(jj);
ID3D11ShaderReflectionType* type = var->GetType();
D3D11_SHADER_VARIABLE_DESC varDesc;
hr = var->GetDesc(&varDesc);
if (SUCCEEDED(hr) )
{
D3D11_SHADER_TYPE_DESC constDesc;
hr = type->GetDesc(&constDesc);
if (SUCCEEDED(hr) )
{
ConstantType::Enum type = findConstantTypeDx11(constDesc, varDesc.Size);
if (ConstantType::Count != type
&& 0 != (varDesc.uFlags & D3D_SVF_USED) )
{
Uniform un;
un.name = varDesc.Name;
un.type = type;
un.num = constDesc.Elements;
un.regIndex = varDesc.StartOffset;
un.regCount = BX_ALIGN_16(varDesc.Size)/16;
uniforms.push_back(un);
BX_TRACE("\t%s, %d, size %d, flags 0x%08x, %d"
, varDesc.Name
, varDesc.StartOffset
, varDesc.Size
, varDesc.uFlags
, type
);
}
}
}
}
}
}
BX_TRACE("Bound:");
for (uint32_t ii = 0; ii < desc.BoundResources; ++ii)
{
D3D11_SHADER_INPUT_BIND_DESC bindDesc;
hr = reflect->GetResourceBindingDesc(ii, &bindDesc);
if (SUCCEEDED(hr) )
{
// if (bindDesc.Type == D3D_SIT_SAMPLER)
{
BX_TRACE("\t%s, %d, %d, %d"
, bindDesc.Name
, bindDesc.Type
, bindDesc.BindPoint
, bindDesc.BindCount
);
}
}
}
uint16_t count = (uint16_t)uniforms.size();
bx::write(_writer, count);
bx::write(_writer, size);
uint32_t fragmentBit = profile[0] == 'p' ? BGFX_UNIFORM_FRAGMENTBIT : 0;
for (UniformArray::const_iterator it = uniforms.begin(); it != uniforms.end(); ++it)
{
const Uniform& un = *it;
uint8_t nameSize = (uint8_t)un.name.size();
bx::write(_writer, nameSize);
bx::write(_writer, un.name.c_str(), nameSize);
uint8_t type = un.type|fragmentBit;
bx::write(_writer, type);
bx::write(_writer, un.num);
bx::write(_writer, un.regIndex);
bx::write(_writer, un.regCount);
BX_TRACE("%s, %s, %d, %d, %d"
, un.name.c_str()
, s_constantTypeName[un.type]
, un.num
, un.regIndex
, un.regCount
);
}
uint16_t shaderSize = (uint16_t)code->GetBufferSize();
bx::write(_writer, shaderSize);
bx::write(_writer, code->GetBufferPointer(), shaderSize);
uint8_t nul = 0;
bx::write(_writer, nul);
if (_cmdLine.hasArg('\0', "disasm") )
{
ID3DBlob* disasm;
D3DDisassemble(code->GetBufferPointer()
, code->GetBufferSize()
, 0
, NULL
, &disasm
);
if (NULL != disasm)
{
std::string disasmfp = _cmdLine.findOption('o');
disasmfp += ".disasm";
writeFile(disasmfp.c_str(), disasm->GetBufferPointer(), (uint32_t)disasm->GetBufferSize() );
disasm->Release();
}
}
if (NULL != reflect)
{
reflect->Release();
}
if (NULL != errorMsg)
{
errorMsg->Release();
}
code->Release();
return true;
#else
BX_UNUSED(_cmdLine, _code, _writer);
fprintf(stderr, "HLSL compiler is not supported on this platform.\n");
return false;
#endif // BX_PLATFORM_WINDOWS
}
struct Preprocessor
{
Preprocessor(const char* _filePath, bool _gles, const char* _includeDir = NULL)
: 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 (NULL != _includeDir)
{
addInclude(_includeDir);
}
if (!_gles)
{
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 = strchr(start, ';'); NULL != split; split = strchr(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";
size_t len = 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 += _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];
strcpy(result, _str);
m_scratchPos += (uint32_t)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;
};
const char* baseName(const char* _filePath)
{
const char* bs = strrchr(_filePath, '\\');
const char* fs = strrchr(_filePath, '/');
const char* column = strrchr(_filePath, ':');
const char* basename = std::max(std::max(bs, fs), column);
if (NULL != basename)
{
return basename+1;
}
return _filePath;
}
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
);
}
// 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
void help(const char* _error = NULL)
{
if (NULL != _error)
{
fprintf(stderr, "Error:\n%s\n\n", _error);
}
fprintf(stderr
, "shaderc, bgfx shader compiler tool\n"
"Copyright 2011-2014 Branimir Karadzic. All rights reserved.\n"
"License: http://www.opensource.org/licenses/BSD-2-Clause\n\n"
);
fprintf(stderr
, "Usage: shaderc -f <in> -o <out> --type <v/f> --platform <platform>\n"
"\n"
"Options:\n"
" -f <file path> Input file path.\n"
" -i <include path> Include path (for multiple paths use semicolon).\n"
" -o <file path> Output file path.\n"
" --bin2c <file path> Generate C header file.\n"
" --depends <file path> Generate makefile style depends file.\n"
" --platform <platform> Target platform.\n"
" android\n"
" ios\n"
" linux\n"
" nacl\n"
" osx\n"
" windows\n"
" --type <type> Shader type (vertex, fragment)\n"
" --varyingdef <file path> Path to varying.def.sc file.\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 main(int _argc, const char* _argv[])
{
bx::CommandLine cmdLine(_argc, _argv);
if (cmdLine.hasArg('h', "help") )
{
help();
return EXIT_FAILURE;
}
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)
{
help("Must specify platform.");
return EXIT_FAILURE;
}
uint32_t gles = 0;
uint32_t hlsl = 2;
const char* profile = cmdLine.findOption('p', "profile");
if (NULL != profile)
{
if (0 == strncmp(&profile[1], "s_3", 3) )
{
hlsl = 3;
}
else if (0 == strncmp(&profile[1], "s_4", 3) )
{
hlsl = 4;
}
else if (0 == strncmp(&profile[1], "s_5", 3) )
{
hlsl = 5;
}
}
else
{
gles = 2;
}
const char* bin2c = NULL;
if (cmdLine.hasArg("bin2c") )
{
bin2c = cmdLine.findOption("bin2c");
if (NULL == bin2c)
{
bin2c = baseName(outFilePath);
uint32_t len = (uint32_t)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');
Preprocessor preprocessor(filePath, 0 != gles, includeDir);
std::string dir;
{
const char* base = baseName(filePath);
if (base != filePath)
{
dir.assign(filePath, base-filePath);
preprocessor.addInclude(dir.c_str() );
}
}
preprocessor.setDefaultDefine("BX_PLATFORM_ANDROID");
preprocessor.setDefaultDefine("BX_PLATFORM_IOS");
preprocessor.setDefaultDefine("BX_PLATFORM_LINUX");
preprocessor.setDefaultDefine("BX_PLATFORM_NACL");
preprocessor.setDefaultDefine("BX_PLATFORM_OSX");
preprocessor.setDefaultDefine("BX_PLATFORM_WINDOWS");
preprocessor.setDefaultDefine("BX_PLATFORM_XBOX360");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_GLSL");
preprocessor.setDefaultDefine("BGFX_SHADER_LANGUAGE_HLSL");
preprocessor.setDefaultDefine("BGFX_SHADER_TYPE_FRAGMENT");
preprocessor.setDefaultDefine("BGFX_SHADER_TYPE_VERTEX");
bool glsl = false;
if (0 == bx::stricmp(platform, "android") )
{
preprocessor.setDefine("BX_PLATFORM_ANDROID=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
glsl = true;
}
else if (0 == bx::stricmp(platform, "ios") )
{
preprocessor.setDefine("BX_PLATFORM_IOS=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
glsl = true;
}
else if (0 == bx::stricmp(platform, "linux") )
{
preprocessor.setDefine("BX_PLATFORM_LINUX=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
glsl = true;
}
else if (0 == bx::stricmp(platform, "nacl") )
{
preprocessor.setDefine("BX_PLATFORM_NACL=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
glsl = true;
}
else if (0 == bx::stricmp(platform, "osx") )
{
preprocessor.setDefine("BX_PLATFORM_OSX=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_GLSL=1");
glsl = true;
}
else if (0 == bx::stricmp(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::stricmp(platform, "xbox360") )
{
preprocessor.setDefine("BX_PLATFORM_XBOX360=1");
preprocessor.setDefine("BGFX_SHADER_LANGUAGE_HLSL=3");
}
else
{
fprintf(stderr, "Unknown platform %s?!", platform);
return EXIT_FAILURE;
}
preprocessor.setDefine("M_PI=3.1415926535897932384626433832795");
bool fragment = false;
switch (tolower(type[0]) )
{
case 'f':
preprocessor.setDefine("BGFX_SHADER_TYPE_FRAGMENT=1");
fragment = true;
break;
case 'v':
preprocessor.setDefine("BGFX_SHADER_TYPE_VERTEX=1");
break;
default:
fprintf(stderr, "Unknown type: %s?!", type);
return EXIT_FAILURE;
}
FILE* file = fopen(filePath, "r");
if (NULL != file)
{
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);
}
while (NULL != parse
&& *parse != '\0')
{
parse = bx::strws(parse);
const char* eol = strchr(parse, ';');
if (NULL != eol)
{
const char* precision = NULL;
const char* type = parse;
if (0 == strncmp(type, "lowp", 4)
|| 0 == strncmp(type, "mediump", 7)
|| 0 == strncmp(type, "highp", 5) )
{
precision = type;
type = 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(bx::strnws(parse) );
const char* assign = parse = bx::strws(bx::strword(parse) );
const char* init = parse = bx::strws(bx::strnws(parse) );
if (type < eol
&& name < eol
&& column < eol
&& ':' == *column
&& semantics < eol)
{
Varying var;
if (NULL != precision)
{
var.m_precision.assign(precision, bx::strword(precision)-precision);
}
var.m_type.assign(type, bx::strword(type)-type);
var.m_name.assign(name, bx::strword(name)-name);
var.m_semantics.assign(semantics, bx::strword(semantics)-semantics);
if (assign < eol
&& '=' == *assign
&& init < eol)
{
var.m_init.assign(init, eol-init);
}
varyingMap.insert(std::make_pair(var.m_name, var) );
}
parse = bx::strnl(eol);
}
}
char* data;
{
const size_t padding = 16;
uint32_t size = (uint32_t)fsize(file);
data = new char[size+padding+1];
size = (uint32_t)fread(data, 1, size, file);
// Compiler generates "error X3000: syntax error: unexpected end of file"
// if input doesn't have empty line at EOF.
data[size] = '\n';
memset(&data[size+1], 0, padding);
fclose(file);
// 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 = preprocessor.m_preprocessed.size();
data = new char[size+padding+1];
memcpy(data, preprocessor.m_preprocessed.c_str(), size);
memset(&data[size], 0, padding+1);
}
char* entry = strstr(data, "void main()");
if (NULL == entry)
{
fprintf(stderr, "Shader entry point 'void main()' is not found.\n");
}
else
{
InOut shaderInputs;
InOut shaderOutputs;
uint32_t inputHash = 0;
uint32_t outputHash = 0;
const char* input = data;
while (input[0] == '$')
{
const char* str = input+1;
const char* eol = bx::streol(str);
const char* nl = bx::strnl(eol);
input = nl;
if (0 == strncmp(str, "input", 5) )
{
str += 5;
const char* comment = strstr(str, "//");
eol = NULL != comment && comment < eol ? comment : eol;
inputHash = parseInOut(shaderInputs, str, eol);
}
else if (0 == strncmp(str, "output", 6) )
{
str += 6;
const char* comment = strstr(str, "//");
eol = NULL != comment && comment < eol ? comment : eol;
outputHash = parseInOut(shaderOutputs, str, eol);
}
}
if (glsl)
{
preprocessor.writef(
"#define ivec2 vec2\n"
"#define ivec3 vec3\n"
"#define ivec4 vec4\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 == strncmp(name, "a_", 2)
|| 0 == strncmp(name, "i_", 2) )
{
preprocessor.writef("attribute %s %s %s;\n"
, var.m_precision.c_str()
, var.m_type.c_str()
, name
);
}
else
{
preprocessor.writef("varying %s %s %s;\n"
, 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("varying %s %s;\n", 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 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] = '_';
if (fragment)
{
const bool hasFragCoord = NULL != strstr(data, "gl_FragCoord") || hlsl > 3;
const bool hasFragDepth = NULL != strstr(data, "gl_FragDepth");
const bool hasFrontFacing = NULL != strstr(data, "gl_FrontFacing");
const bool hasFragData0 = NULL != strstr(data, "gl_FragData[0]");
const bool hasFragData1 = NULL != strstr(data, "gl_FragData[1]");
const bool hasFragData2 = NULL != strstr(data, "gl_FragData[2]");
const bool hasFragData3 = NULL != strstr(data, "gl_FragData[3]");
if (!hasFragData0
&& !hasFragData1
&& !hasFragData2
&& !hasFragData3)
{
// 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");
}
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", arg++ > 0 ? ", " : " ", var.m_type.c_str(), var.m_name.c_str(), var.m_semantics.c_str() );
}
}
addFragData(preprocessor, data, 0, arg++ > 0);
if (hasFragData1)
{
addFragData(preprocessor, data, 1, arg++ > 0);
}
if (hasFragData2)
{
addFragData(preprocessor, data, 2, arg++ > 0);
}
if (hasFragData3)
{
addFragData(preprocessor, data, 3, arg++ > 0);
}
if (hasFragDepth)
{
preprocessor.writef(
" \\\n\t%sout float gl_FragDepth : SV_DEPTH"
, arg++ > 0 ? ", " : " "
);
}
if (hasFrontFacing)
{
preprocessor.writef(
" \\\n\t%sfloat __vface : VFACE"
, arg++ > 0 ? ", " : " "
);
}
preprocessor.writef(
" \\\n\t)\n"
);
if (hasFrontFacing)
{
preprocessor.writef(
"#define gl_FrontFacing (__vface <= 0.0)\n"
);
}
}
else
{
const char* brace = strstr(entry, "{");
if (NULL != brace)
{
const char* end = bx::strmb(brace, '{', '}');
if (NULL != end)
{
strins(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(");
bool first = true;
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("%s%s %s : %s\\\n", first ? "" : "\t, ", var.m_type.c_str(), var.m_name.c_str(), var.m_semantics.c_str() );
first = false;
}
}
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 = %s;", var.m_name.c_str(), var.m_init.c_str() );
}
}
preprocessor.writef(
"\n#define __RETURN__ \\\n"
"\t} \\\n"
"\treturn _varying_"
);
}
}
if (preprocessor.run(input) )
{
BX_TRACE("Input file: %s", filePath);
BX_TRACE("Output file: %s", outFilePath);
if (preprocessOnly)
{
bx::CrtFileWriter writer;
if (0 != writer.open(outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
if (glsl)
{
const char* profile = cmdLine.findOption('p', "profile");
if (NULL == profile)
{
writef(&writer
, "#ifdef GL_ES\n"
"precision highp float;\n"
"#endif // GL_ES\n\n"
);
}
}
writer.write(preprocessor.m_preprocessed.c_str(), (int32_t)preprocessor.m_preprocessed.size() );
writer.close();
return EXIT_SUCCESS;
}
bool compiled = false;
{
bx::CrtFileWriter* writer = NULL;
if (NULL != bin2c)
{
writer = new Bin2cWriter(bin2c);
}
else
{
writer = new bx::CrtFileWriter;
}
if (0 != writer->open(outFilePath) )
{
fprintf(stderr, "Unable to open output file '%s'.", outFilePath);
return EXIT_FAILURE;
}
if (fragment)
{
bx::write(writer, BGFX_CHUNK_MAGIC_FSH);
bx::write(writer, inputHash);
}
else
{
bx::write(writer, BGFX_CHUNK_MAGIC_VSH);
bx::write(writer, outputHash);
}
if (glsl)
{
std::string code;
bool hasTextureLod = NULL != bx::findIdentifierMatch(data, s_ARB_shader_texture_lod /*EXT_shader_texture_lod*/);
if (0 == gles)
{
bx::stringPrintf(code, "#version %s\n", profile);
int32_t version = atoi(profile);
if (hasTextureLod
&& 130 > version)
{
bx::stringPrintf(code
, "#extension GL_ARB_shader_texture_lod : enable\n"
);
}
}
else
{
// Pretend that all extensions are available.
// This will be stripped later.
if (hasTextureLod)
{
bx::stringPrintf(code
, "#extension GL_EXT_shader_texture_lod : enable\n"
"#define texture2DLod texture2DLodEXT\n"
"#define texture2DProjLod texture2DProjLodEXT\n"
"#define textureCubeLod textureCubeLodEXT\n"
// "#define texture2DGrad texture2DGradEXT\n"
// "#define texture2DProjGrad texture2DProjGradEXT\n"
// "#define textureCubeGrad textureCubeGradEXT\n"
);
}
if (NULL != bx::findIdentifierMatch(data, s_OES_standard_derivatives) )
{
bx::stringPrintf(code, "#extension GL_OES_standard_derivatives : enable\n");
}
if (NULL != bx::findIdentifierMatch(data, s_OES_texture_3D) )
{
bx::stringPrintf(code, "#extension GL_OES_texture_3D : enable\n");
}
if (NULL != bx::findIdentifierMatch(data, s_EXT_shadow_samplers) )
{
bx::stringPrintf(code
, "#extension GL_EXT_shadow_samplers : enable\n"
"#define shadow2D shadow2DEXT\n"
"#define shadow2DProj shadow2DProjEXT\n"
);
}
if (NULL != bx::findIdentifierMatch(data, "gl_FragDepth") )
{
bx::stringPrintf(code
, "#extension GL_EXT_frag_depth : enable\n"
"#define gl_FragDepth gl_FragDepthEXT\n"
);
}
}
code += preprocessor.m_preprocessed;
compiled = compileGLSLShader(cmdLine, gles, code, writer);
}
else
{
if (hlsl > 3)
{
compiled = compileHLSLShaderDx11(cmdLine, preprocessor.m_preprocessed, writer);
}
else
{
compiled = compileHLSLShaderDx9(cmdLine, preprocessor.m_preprocessed, writer);
}
}
writer->close();
delete writer;
}
if (compiled)
{
if (depends)
{
std::string ofp = outFilePath;
ofp += ".d";
bx::CrtFileWriter writer;
if (0 == writer.open(ofp.c_str() ) )
{
writef(&writer, "%s : %s\n", outFilePath, preprocessor.m_depends.c_str() );
writer.close();
}
}
return EXIT_SUCCESS;
}
}
}
delete [] data;
}
remove(outFilePath);
fprintf(stderr, "Failed to build shader.\n");
return EXIT_FAILURE;
}
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