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Pass precision qualifier from varying.def.sc to shader.

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This commit is contained in:
bkaradzic 2014-02-01 21:15:14 -08:00
parent 3273b04f6f
commit 3e3de1e35a
2 changed files with 40 additions and 9 deletions
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tools/bin/darwin/shaderc
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49
tools/shaderc/shaderc.cpp
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@ -388,6 +388,7 @@ private:
struct Varying
{
std::string m_precision;
std::string m_name;
std::string m_type;
std::string m_init;
@ -507,7 +508,10 @@ bool compileGLSLShader(bx::CommandLine& _cmdLine, const std::string& _code, bx::
{
const glslopt_shader_type type = tolower(_cmdLine.findOption('\0', "type")[0]) == 'f' ? kGlslOptShaderFragment : kGlslOptShaderVertex;
glslopt_ctx* ctx = glslopt_initialize(false);
const char* profile = _cmdLine.findOption('p', "profile");
bool gles = NULL == profile;
glslopt_ctx* ctx = glslopt_initialize(gles);
glslopt_shader* shader = glslopt_optimize(ctx, type, _code.c_str(), 0);
@ -521,8 +525,7 @@ bool compileGLSLShader(bx::CommandLine& _cmdLine, const std::string& _code, bx::
const char* optimizedShader = glslopt_get_output(shader);
const char* profile = _cmdLine.findOption('p', "profile");
if (NULL == profile)
if (gles)
{
writef(_writer, "#ifdef GL_ES\n");
writef(_writer, "precision highp float;\n");
@ -1037,7 +1040,7 @@ bool compileHLSLShaderDx11(bx::CommandLine& _cmdLine, const std::string& _code,
struct Preprocessor
{
Preprocessor(const char* _filePath, const char* _includeDir = NULL)
Preprocessor(const char* _filePath, bool _gles, const char* _includeDir = NULL)
: m_tagptr(m_tags)
, m_scratchPos(0)
, m_fgetsPos(0)
@ -1079,7 +1082,10 @@ struct Preprocessor
addInclude(_includeDir);
}
m_default = "#define lowp\n#define mediump\n#define highp\n";
if (!_gles)
{
m_default = "#define lowp\n#define mediump\n#define highp\n";
}
}
void setDefine(const char* _define)
@ -1379,6 +1385,7 @@ int main(int _argc, const char* _argv[])
return EXIT_FAILURE;
}
uint32_t gles = 0;
uint32_t hlsl = 2;
const char* profile = cmdLine.findOption('p', "profile");
if (NULL != profile)
@ -1396,6 +1403,10 @@ int main(int _argc, const char* _argv[])
hlsl = 5;
}
}
else
{
gles = 2;
}
const char* bin2c = NULL;
if (cmdLine.hasArg("bin2c") )
@ -1428,7 +1439,7 @@ int main(int _argc, const char* _argv[])
bool preprocessOnly = cmdLine.hasArg("preprocess");
const char* includeDir = cmdLine.findOption('i');
Preprocessor preprocessor(filePath, includeDir);
Preprocessor preprocessor(filePath, 0 != gles, includeDir);
std::string dir;
{
@ -1544,7 +1555,16 @@ int main(int _argc, const char* _argv[])
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) );
@ -1558,6 +1578,10 @@ int main(int _argc, const char* _argv[])
&& 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);
@ -1630,7 +1654,6 @@ int main(int _argc, const char* _argv[])
"#define ivec4 vec4\n"
);
for (InOut::const_iterator it = shaderInputs.begin(), itEnd = shaderInputs.end(); it != itEnd; ++it)
{
VaryingMap::const_iterator varyingIt = varyingMap.find(*it);
@ -1641,11 +1664,19 @@ int main(int _argc, const char* _argv[])
if (0 == strncmp(name, "a_", 2)
|| 0 == strncmp(name, "i_", 2) )
{
preprocessor.writef("attribute %s %s;\n", var.m_type.c_str(), name);
preprocessor.writef("attribute %s %s %s;\n"
, var.m_precision.c_str()
, var.m_type.c_str()
, name
);
}
else
{
preprocessor.writef("varying %s %s;\n", var.m_type.c_str(), name);
preprocessor.writef("varying %s %s %s;\n"
, var.m_precision.c_str()
, var.m_type.c_str()
, name
);
}
}
}