316 lines
8.0 KiB
C++
316 lines
8.0 KiB
C++
/*
|
|
* Copyright 2011-2018 Branimir Karadzic. All rights reserved.
|
|
* License: https://github.com/bkaradzic/bgfx#license-bsd-2-clause
|
|
*/
|
|
|
|
#include "shaderc.h"
|
|
#include "glsl_optimizer.h"
|
|
|
|
namespace bgfx { namespace glsl
|
|
{
|
|
static bool compile(const Options& _options, uint32_t _version, const std::string& _code, bx::WriterI* _writer)
|
|
{
|
|
char ch = _options.shaderType;
|
|
const glslopt_shader_type type = ch == 'f'
|
|
? kGlslOptShaderFragment
|
|
: (ch == 'c' ? kGlslOptShaderCompute : kGlslOptShaderVertex);
|
|
|
|
glslopt_target target = kGlslTargetOpenGL;
|
|
switch (_version)
|
|
{
|
|
case BX_MAKEFOURCC('M', 'T', 'L', 0):
|
|
target = kGlslTargetMetal;
|
|
break;
|
|
|
|
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;
|
|
|
|
bool found = false
|
|
|| 3 == sscanf(log, "%u:%u(%u):", &source, &line, &column)
|
|
|| 2 == sscanf(log, "(%u,%u):", &line, &column)
|
|
;
|
|
|
|
if (found
|
|
&& 0 != line)
|
|
{
|
|
start = bx::uint32_imax(1, line-10);
|
|
end = start + 20;
|
|
}
|
|
|
|
printCode(_code.c_str(), line, start, end, column);
|
|
fprintf(stderr, "Error: %s\n", log);
|
|
glslopt_shader_delete(shader);
|
|
glslopt_cleanup(ctx);
|
|
return false;
|
|
}
|
|
|
|
const char* optimizedShader = glslopt_get_output(shader);
|
|
|
|
// Trim all directives.
|
|
while ('#' == *optimizedShader)
|
|
{
|
|
optimizedShader = bx::strnl(optimizedShader);
|
|
}
|
|
|
|
{
|
|
char* code = const_cast<char*>(optimizedShader);
|
|
strReplace(code, "gl_FragDepthEXT", "gl_FragDepth");
|
|
|
|
strReplace(code, "texture2DLodARB", "texture2DLod");
|
|
strReplace(code, "texture2DLodEXT", "texture2DLod");
|
|
strReplace(code, "texture2DGradARB", "texture2DGrad");
|
|
strReplace(code, "texture2DGradEXT", "texture2DGrad");
|
|
|
|
strReplace(code, "textureCubeLodARB", "textureCubeLod");
|
|
strReplace(code, "textureCubeLodEXT", "textureCubeLod");
|
|
strReplace(code, "textureCubeGradARB", "textureCubeGrad");
|
|
strReplace(code, "textureCubeGradEXT", "textureCubeGrad");
|
|
|
|
strReplace(code, "texture2DProjLodARB", "texture2DProjLod");
|
|
strReplace(code, "texture2DProjLodEXT", "texture2DProjLod");
|
|
strReplace(code, "texture2DProjGradARB", "texture2DProjGrad");
|
|
strReplace(code, "texture2DProjGradEXT", "texture2DProjGrad");
|
|
|
|
strReplace(code, "shadow2DARB", "shadow2D");
|
|
strReplace(code, "shadow2DEXT", "shadow2D");
|
|
strReplace(code, "shadow2DProjARB", "shadow2DProj");
|
|
strReplace(code, "shadow2DProjEXT", "shadow2DProj");
|
|
}
|
|
|
|
UniformArray uniforms;
|
|
|
|
if (target != kGlslTargetMetal)
|
|
{
|
|
const char* parse = optimizedShader;
|
|
|
|
while (NULL != parse
|
|
&& *parse != '\0')
|
|
{
|
|
parse = bx::strws(parse);
|
|
const char* eol = bx::strFind(parse, ';');
|
|
if (NULL != eol)
|
|
{
|
|
const char* qualifier = parse;
|
|
parse = bx::strws(bx::strSkipWord(parse) );
|
|
|
|
if (0 == bx::strCmp(qualifier, "attribute", 9)
|
|
|| 0 == bx::strCmp(qualifier, "varying", 7)
|
|
|| 0 == bx::strCmp(qualifier, "in", 2)
|
|
|| 0 == bx::strCmp(qualifier, "out", 3)
|
|
)
|
|
{
|
|
// skip attributes and varyings.
|
|
parse = eol + 1;
|
|
continue;
|
|
}
|
|
|
|
if (0 == bx::strCmp(parse, "tmpvar", 6) )
|
|
{
|
|
// skip temporaries
|
|
parse = eol + 1;
|
|
continue;
|
|
}
|
|
|
|
if (0 != bx::strCmp(qualifier, "uniform", 7) )
|
|
{
|
|
// end if there is no uniform keyword.
|
|
parse = NULL;
|
|
continue;
|
|
}
|
|
|
|
const char* precision = 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::strSkipWord(parse) );
|
|
}
|
|
|
|
BX_UNUSED(precision);
|
|
|
|
char uniformType[256];
|
|
parse = bx::strSkipWord(parse);
|
|
|
|
if (0 == bx::strCmp(typen, "sampler", 7) )
|
|
{
|
|
bx::strCopy(uniformType, BX_COUNTOF(uniformType), "int");
|
|
}
|
|
else
|
|
{
|
|
bx::strCopy(uniformType, int32_t(parse-typen+1), typen);
|
|
}
|
|
|
|
const char* name = parse = bx::strws(parse);
|
|
|
|
char uniformName[256];
|
|
uint8_t num = 1;
|
|
const char* array = bx::strFind(bx::StringView(name, int32_t(eol-parse) ), "[");
|
|
if (NULL != array)
|
|
{
|
|
bx::strCopy(uniformName, int32_t(array-name+1), name);
|
|
|
|
char arraySize[32];
|
|
const char* end = bx::strFind(bx::StringView(array, int32_t(eol-array) ), "]");
|
|
bx::strCopy(arraySize, int32_t(end-array), array+1);
|
|
num = uint8_t(atoi(arraySize) );
|
|
}
|
|
else
|
|
{
|
|
bx::strCopy(uniformName, int32_t(eol-name+1), name);
|
|
}
|
|
|
|
Uniform un;
|
|
un.type = nameToUniformTypeEnum(uniformType);
|
|
|
|
if (UniformType::Count != un.type)
|
|
{
|
|
BX_TRACE("name: %s (type %d, num %d)", uniformName, un.type, num);
|
|
|
|
un.name = uniformName;
|
|
un.num = num;
|
|
un.regIndex = 0;
|
|
un.regCount = num;
|
|
uniforms.push_back(un);
|
|
}
|
|
|
|
parse = eol + 1;
|
|
}
|
|
}
|
|
}
|
|
else
|
|
{
|
|
const char* parse = bx::strFind(optimizedShader, "struct xlatMtlShaderUniform {");
|
|
const char* end = parse;
|
|
if (NULL != parse)
|
|
{
|
|
parse += bx::strLen("struct xlatMtlShaderUniform {");
|
|
end = bx::strFind(parse, "};");
|
|
}
|
|
|
|
while ( parse < end
|
|
&& *parse != '\0')
|
|
{
|
|
parse = bx::strws(parse);
|
|
const char* eol = bx::strFind(parse, ';');
|
|
if (NULL != eol)
|
|
{
|
|
const char* typen = parse;
|
|
|
|
char uniformType[256];
|
|
parse = bx::strSkipWord(parse);
|
|
bx::strCopy(uniformType, int32_t(parse-typen+1), typen);
|
|
const char* name = parse = bx::strws(parse);
|
|
|
|
char uniformName[256];
|
|
uint8_t num = 1;
|
|
const char* array = bx::strFind(bx::StringView(name, int32_t(eol-parse) ), "[");
|
|
if (NULL != array)
|
|
{
|
|
bx::strCopy(uniformName, int32_t(array-name+1), name);
|
|
|
|
char arraySize[32];
|
|
const char* arrayEnd = bx::strFind(bx::StringView(array, int32_t(eol-array) ), "]");
|
|
bx::strCopy(arraySize, int32_t(arrayEnd-array), array+1);
|
|
num = uint8_t(atoi(arraySize) );
|
|
}
|
|
else
|
|
{
|
|
bx::strCopy(uniformName, int32_t(eol-name+1), name);
|
|
}
|
|
|
|
Uniform un;
|
|
un.type = nameToUniformTypeEnum(uniformType);
|
|
|
|
if (UniformType::Count != un.type)
|
|
{
|
|
BX_TRACE("name: %s (type %d, num %d)", uniformName, un.type, num);
|
|
|
|
un.name = uniformName;
|
|
un.num = num;
|
|
un.regIndex = 0;
|
|
un.regCount = num;
|
|
uniforms.push_back(un);
|
|
}
|
|
|
|
parse = eol + 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
uint16_t count = (uint16_t)uniforms.size();
|
|
bx::write(_writer, count);
|
|
|
|
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 uniformType = uint8_t(un.type);
|
|
bx::write(_writer, uniformType);
|
|
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()
|
|
, getUniformTypeName(un.type)
|
|
, un.num
|
|
, un.regIndex
|
|
, un.regCount
|
|
);
|
|
}
|
|
|
|
uint32_t shaderSize = (uint32_t)bx::strLen(optimizedShader);
|
|
bx::write(_writer, shaderSize);
|
|
bx::write(_writer, optimizedShader, shaderSize);
|
|
uint8_t nul = 0;
|
|
bx::write(_writer, nul);
|
|
|
|
if (_options.disasm )
|
|
{
|
|
std::string disasmfp = _options.outputFilePath + ".disasm";
|
|
writeFile(disasmfp.c_str(), optimizedShader, shaderSize);
|
|
}
|
|
|
|
glslopt_shader_delete(shader);
|
|
glslopt_cleanup(ctx);
|
|
|
|
return true;
|
|
}
|
|
|
|
} // namespace glsl
|
|
|
|
bool compileGLSLShader(const Options& _options, uint32_t _version, const std::string& _code, bx::WriterI* _writer)
|
|
{
|
|
return glsl::compile(_options, _version, _code, _writer);
|
|
}
|
|
|
|
} // namespace bgfx
|