//-----------------------------------------------------------------------
void CgProgram::selectProfile(void)
{
mSelectedProfile.clear();
mSelectedCgProfile = CG_PROFILE_UNKNOWN;
StringVector::iterator i, iend;
iend = mProfiles.end();
GpuProgramManager& gpuMgr = GpuProgramManager::getSingleton();
for (i = mProfiles.begin(); i != iend; ++i)
{
if (gpuMgr.isSyntaxSupported(*i))
{
mSelectedProfile = *i;
mSelectedCgProfile = cgGetProfile(mSelectedProfile.c_str());
// Check for errors
checkForCgError("CgProgram::selectProfile",
"Unable to find CG profile enum for program " + mName + ": ", mCgContext);
break;
}
}
}
bool FragmentShaderCg::SetSourceCode(const String &sSourceCode, const String &sProfile, const String &sArguments, const String &sEntry)
{
// Destroy the previous Cg fragment program, if there's one
if (m_pCgFragmentProgram) {
cgDestroyProgram(m_pCgFragmentProgram);
m_pCgFragmentProgram = nullptr;
}
// Get the profile from a user given string
m_pCgProfile = cgGetProfile(sProfile.GetLength() ? sProfile : "glslf"); // We're using a GLSL profile as default so ATI users have reasonable shader support when using Cg
// On unknown or invalid profile, choose a fallback profile
if (m_pCgProfile == CG_PROFILE_UNKNOWN || (!cgGetProfileProperty(m_pCgProfile, CG_IS_FRAGMENT_PROFILE) && m_pCgProfile != CG_PROFILE_GLSLF)) {
m_pCgProfile = cgGLGetLatestProfile(CG_GL_FRAGMENT);
if (m_pCgProfile == CG_PROFILE_UNKNOWN && cgGLIsProfileSupported(CG_PROFILE_GLSLF))
m_pCgProfile = CG_PROFILE_GLSLF;
}
// Create the Cg fragment program
if (m_pCgProfile != CG_PROFILE_UNKNOWN)
m_pCgFragmentProgram = CgContext::CreateCgProgram(m_pCgProfile, sSourceCode, sArguments, sEntry);
// Was the Cg program created successfully?
if (m_pCgFragmentProgram) {
// Backup the optional shader compiler arguments and the user defined entry point
m_sArguments = sArguments;
m_sEntry = sEntry;
// Done
return true;
} else {
m_pCgProfile = CG_PROFILE_UNKNOWN;
m_sArguments = "";
m_sEntry = "";
// Error!
return false;
}
}
static sBool sCompileCg(sCompileResult &result, sInt stype, sInt dtype, sInt flags, const sChar8 *src, sInt len, const sChar8 *name)
{
#if sCOMP_CG_ENABLE
if(result.Cg.Program)
cgDestroyProgram(result.Cg.Program);
sChar8 *src8 = new sChar8[len];
sCopyString(src8,src,len);
CGprofile prof = cgGetProfile(GetProfile(dtype));
CGprogram program = cgCreateProgram(CGC,CG_SOURCE,src8,prof,name,0);
if(GetCgError(result.Errors)) goto error;
cgCompileProgram(program);
if(GetCgError(result.Errors)) goto error;
const sChar8 *out8 = cgGetProgramString(program,CG_COMPILED_PROGRAM);
if(GetCgError(result.Errors)) goto error;
sInt size = 0;
while(out8[size]) size++;
sAddShaderBlob(result.ShaderBlobs,dtype,size,(const sU8*)out8);
result.Valid = sTRUE;
sDeleteArray(src8);
return sTRUE;
error:
result.Valid = sFALSE;
sDeleteArray(src8);
return sFALSE;
#else
sLogF(L"asc",L"sCOMP_CG_ENABLE == 0 no cg compiler available\n");
return sFALSE;
#endif // sCOMP_CG_ENABLE
}
void cgfxProfile::initialize()
{
// Determine the texture coordinate orientation.
{
MStatus status;
MString str =
MCommonSystemUtils::getEnv("MAYA_TEXCOORD_ORIENTATION", &status);
if (status)
{
if (str == "OPENGL" || str == "")
sTexCoordOrientation = TEXCOORD_OPENGL;
else if (str == "DIRECTX")
sTexCoordOrientation = TEXCOORD_DIRECTX;
else {
MString es = "cgfxShader : The value ";
es += str;
es += " of the MAYA_TEXCOORD_ORIENTATION environment variable is unsupported. ";
es += "Supported values are OPENGL and DIRECTX";
MGlobal::displayWarning( es );
}
}
}
// Determine the list of available Cg profiles.
{
const int nbKnownProfiles = sizeof(CgGLProfileList)/sizeof(const char*[4]);
cgfxProfile** currentEntry = &sProfileList;
for (int i=0; i<nbKnownProfiles; ++i) {
const char* shortName = CgGLProfileList[i][0];
const char* vtxProfileName = CgGLProfileList[i][1];
const char* geomProfileName = CgGLProfileList[i][2];
const char* fragProfileName = CgGLProfileList[i][3];
CGprofile vtxProfile = cgGetProfile(vtxProfileName);
CGprofile geomProfile = cgGetProfile(geomProfileName);
CGprofile fragProfile = cgGetProfile(fragProfileName);
// The geometry profile support is optional.
if (
cgGLIsProfileSupported(vtxProfile) &&
(geomProfileName[0] == '\0' || cgGLIsProfileSupported(geomProfile)) &&
cgGLIsProfileSupported(fragProfile)
) {
*currentEntry = new cgfxProfile(
shortName, vtxProfile, geomProfile, fragProfile);
currentEntry = &(*currentEntry)->fNext;
}
}
}
// Set the shader profile strings to the latest supported one.
if (sProfileList == NULL) {
sBestProfile = NULL;
}
else if (sProfileList->fNext == NULL) {
// Only one profile is available we must chose it.
sBestProfile = sProfileList;
}
else {
if (sProfileList->fName == "glsl") {
// The GLSL profile does not handle properly the semantic
// annotations on top-level uniform variable
// declarations. We therefore try to avoid it by default.
sBestProfile = sProfileList->fNext;
}
else {
sBestProfile = sProfileList;
}
}
}
bool ProfileLimits::FromString (const char* str)
{
csStringArray components;
components.SplitString (str, ".");
if (components.GetSize() == 0) return false;
size_t i = 0;
profile = cgGetProfile (components[i++]);
if (profile == CG_PROFILE_UNKNOWN) return false;
if (i >= components.GetSize()) return false;
vendor = CS::PluginCommon::ShaderProgramPluginGL::VendorFromString (
components[i++]);
FixupVendor();
if (vendor == CS::PluginCommon::ShaderProgramPluginGL::Invalid)
return false;
uint usedLimits = 0;
uint usedExts = 0;
#define PROFILE_BEGIN(PROFILE) \
case CG_PROFILE_ ## PROFILE: \
{
#define PROFILE_END(PROFILE) \
} \
break;
#define LIMIT(Limit, glLimit, cgDefault, cgMax) \
usedLimits |= 1 << lim ## Limit;
#define USESEXT(X, defaultPresent) \
usedExts |= ext ## X;
switch (profile)
{
PROFILES
default:
break;
}
#undef PROFILE_BEGIN
#undef PROFILE_END
#undef LIMIT
#undef USESEXT
if (usedExts != 0)
{
if (i >= components.GetSize()) return false;
uint v;
char dummy;
if (sscanf (components[i++], "%u%c", &v, &dummy) != 1) return false;
extensions = v;
}
#define EMIT(Limit) \
if (usedLimits & (1 << lim ## Limit)) \
{ \
if (i >= components.GetSize()) return false; \
int v; \
char dummy; \
if (sscanf (components[i++], "%d%c", &v, &dummy) != 1) return false; \
Limit = v; \
}
EMIT (MaxInstructions);
EMIT (NumInstructionSlots);
EMIT (NumMathInstructionSlots);
EMIT (NumTexInstructionSlots);
EMIT (NumTemps);
EMIT (MaxLocalParams);
EMIT (MaxTexIndirections);
EMIT (MaxAddressRegs);
#undef EMIT
return i == components.GetSize();
};