cgfxPass::cgfxPass(
CGpass pass,
const cgfxProfile* profile
)
: fPass( pass),
fProgram( NULL),
fParameters( NULL),
fDefaultProfile("default", pass),
fNext( NULL)
{
if( pass)
{
fName = cgGetPassName( pass);
CGstateassignment stateAssignment = cgGetFirstStateAssignment( pass);
cgfxVaryingParameter** nextParameter = &fParameters;
while( stateAssignment )
{
CGstate state = cgGetStateAssignmentState( stateAssignment);
if( cgGetStateType( state) == CG_PROGRAM_TYPE &&
( stricmp( cgGetStateName( state), "vertexProgram") == 0 ||
stricmp( cgGetStateName( state), "vertexShader") == 0))
{
fProgram = cgGetProgramStateAssignmentValue( stateAssignment);
if( fProgram)
{
CGparameter parameter = cgGetFirstParameter( fProgram, CG_PROGRAM);
while( parameter)
{
cgfxVaryingParameter::addRecursive( parameter, nextParameter);
parameter = cgGetNextParameter( parameter);
}
}
}
setProfile(profile);
stateAssignment = cgGetNextStateAssignment( stateAssignment);
}
}
}
static bool AddState(JSON &json, CGstateassignment sa)
{
const CGstate state = cgGetStateAssignmentState(sa);
const char * const stateName = cgGetStateName(state);
if (false == IsValidState(stateName))
{
ErrorMessage("Invalid state for OpenGL ES 2.0 %s", stateName);
return false;
}
const CGtype type = cgGetStateType(state);
int nValues;
switch (type)
{
case CG_PROGRAM_TYPE:
return true;
case CG_FLOAT:
case CG_FLOAT1:
{
const float * const fvalues = cgGetFloatStateAssignmentValues(sa, &nValues);
json.AddValue(stateName, fvalues[0]);
}
break;
case CG_FLOAT2:
case CG_FLOAT3:
case CG_FLOAT4:
{
const float * const fvalues = cgGetFloatStateAssignmentValues(sa, &nValues);
json.AddArray(stateName, true);
json.BeginData(true);
for (int n = 0; n < nValues; ++n)
{
json.AddData(fvalues[n]);
}
json.EndData();
json.CloseArray(true);
}
break;
case CG_INT:
case CG_INT1:
{
const int * const ivalues = cgGetIntStateAssignmentValues(sa, &nValues);
json.AddValue(stateName, ivalues[0]);
}
break;
case CG_INT2:
case CG_INT3:
case CG_INT4:
{
const int * const ivalues = cgGetIntStateAssignmentValues(sa, &nValues);
json.AddArray(stateName, true);
json.BeginData(true);
for (int n = 0; n < nValues; ++n)
{
json.AddData(ivalues[n]);
}
json.EndData();
json.CloseArray(true);
}
break;
case CG_BOOL:
case CG_BOOL1:
{
const CGbool * const bvalues = cgGetBoolStateAssignmentValues(sa, &nValues);
json.AddBoolean(stateName, (bvalues[0] ? true : false));
}
break;
case CG_BOOL2:
case CG_BOOL3:
case CG_BOOL4:
{
const CGbool * const bvalues = cgGetBoolStateAssignmentValues(sa, &nValues);
json.AddArray(stateName, true);
json.BeginData(true);
for (int n = 0; n < nValues; ++n)
{
json.AddData(bvalues[n]);
}
json.EndData();
json.CloseArray(true);
}
break;
case CG_STRING:
json.AddString(stateName, cgGetStringStateAssignmentValue(sa));
break;
default:
ErrorMessage("UNEXPECTED State Assignment Type: %s 0x%x (%d)\n",
cgGetTypeString(type), type, type);
return false;
}
return true;
}
//
// Scan the technique for passes which use blending
//
bool cgfxTechnique::hasBlending(CGtechnique technique)
{
// Assume not blending
bool hasBlending = false;
// Check for : BlendEnable=true, BlendFunc=something valid on the first pass only.
//
// We ignore any depth enable and functions for now...
//
CGpass cgPass = cgGetFirstPass(technique);
bool foundBlendEnabled = false;
bool foundBlendFunc = false;
if (cgPass)
{
CGstateassignment stateAssignment = cgGetFirstStateAssignment(cgPass);
while ( stateAssignment )
{
CGstate state = cgGetStateAssignmentState( stateAssignment);
const char *stateName = cgGetStateName(state);
// Check for blend enabled.
if (!foundBlendEnabled && stricmp( stateName, "BlendEnable") == 0)
{
int numValues = 0;
const CGbool *values = cgGetBoolStateAssignmentValues(stateAssignment, &numValues);
if (values && numValues)
{
if (values[0])
{
foundBlendEnabled = true;
}
}
}
// Check for valid blend function
else if (!foundBlendFunc && ( stricmp( stateName, "BlendFunc") == 0 ||
stricmp( stateName, "BlendFuncSeparate") == 0 ))
{
int numValues = 0;
const int * values = cgGetIntStateAssignmentValues(stateAssignment, &numValues);
if (values)
{
#if defined(CGFX_DEBUG_BLEND_FUNCTIONS)
/*
#define GL_SRC_COLOR 0x0300 = 768
#define GL_ONE_MINUS_SRC_COLOR 0x0301 = 769
#define GL_SRC_ALPHA 0x0302 = 770
#define GL_ONE_MINUS_SRC_ALPHA 0x0303 = 771
#define GL_DST_ALPHA 0x0304 = 772
#define GL_ONE_MINUS_DST_ALPHA 0x0305 = 773
*/
MString blendStringTable[6] =
{
"GL_SRC_COLOR", // SrcColor
"GL_ONE_MINUS_SRC_COLOR", // OneMinusSrcColor
"GL_SRC_ALPHA", // SrcAlpha
"GL_ONE_MINUS_SRC_ALPHA", // OneMinusSrcAlpha
"GL_DST_ALPHA", // DstAlpha
"GL_ONE_MINUS_DST_ALPHA" // OneMinusDstAlpha
};
#endif
for (int i=0; i<numValues; i++)
{
if ((values[i] >= GL_SRC_COLOR) && (values[i] <= GL_ONE_MINUS_DST_ALPHA))
{
#if defined(CGFX_DEBUG_BLEND_FUNCTIONS)
printf("Found blend function = %s, %s\n",
blendStringTable[ values[0]-GL_SRC_COLOR].asChar(),
blendStringTable[ values[1]-GL_SRC_COLOR].asChar());
#endif
foundBlendFunc = true;
break;
}
}
}
}
hasBlending = foundBlendEnabled && foundBlendFunc;
if (hasBlending)
break;
stateAssignment = cgGetNextStateAssignment( stateAssignment);
}
}
return hasBlending;
}
