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//
//Copyright (C) 2002-2004 3Dlabs Inc. Ltd.
//All rights reserved.
//
//Redistribution and use in source and binary forms, with or without
//modification, are permitted provided that the following conditions
//are met:
//
// Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimer.
//
// Redistributions in binary form must reproduce the above
// copyright notice, this list of conditions and the following
// disclaimer in the documentation and/or other materials provided
// with the distribution.
//
// Neither the name of 3Dlabs Inc. Ltd. nor the names of its
// contributors may be used to endorse or promote products derived
// from this software without specific prior written permission.
//
//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
//"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
//LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
//FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
//COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
//INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
//BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
//LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
//CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
//LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
//ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
//POSSIBILITY OF SUCH DAMAGE.
//
#ifndef _SHADERLANG_EXTENSION_INCLUDED_
#define _SHADERLANG_EXTENSION_INCLUDED_
#include "ShaderLang.h"
//
// This is the platform independent interface between an OGL driver
// and the shading language compiler/linker.
//
#ifdef __cplusplus
extern "C" {
#endif
typedef enum {
EReserved = 0,
EFixed,
ERecommended,
EFloating
} ShPriority;
typedef enum {
ESymbol = 0,
EFloatConst,
EFloatConstPtr,
EIntConst,
EIntConstPtr,
EBoolConst,
EBoolConstPtr
} ShDataType;
// this definition will eventually go once we move to the new linker interface in the driver
typedef enum {
EVirtualBinding,
EPhysicalBinding
} ShVirtualPhysicalBinding;
typedef struct {
int size; // out - total physical size for the binding in floats - P10
int location; // in-out - virtualLocation for all cases
int functionPriority; // out - used for giving priorities to function bindings
int proEpilogue; // out - essentially a bool defining whether its a prologue/epilogue or not, 1 means it is
int builtInName; // out - basically a bool value, 0 means not a builtInName, 1 means its a builtInName
int arraySize; // out - size of the array in units of its type - if the binding is for an array
ShPriority bindingPriority; // in-out - EFixed, ERecommended, EFloating
ShDataType bindingDataType; // in-out - whether its a symbol name or a constant value
ShBasicType hardwareDataType; // out - bool are loaded as floats on the hardware
ShBasicType userDataType; // out - mat3 -> mat3, ivec2 -> ivec2, vec2 -> vec2
ShBasicType basicUserType; // out - mat3 -> float, ivec2 ->int, vec2 -> float
int sizeOfType; // out - for vec3 -> 3, for float -> 1, for mat3 -> 3, mat3[10] -> 3
int matrix; // out - essentially a boolean, 0 means vector, 1 means matrix
union { // in-out
char* name;
float floatVal;
float* floatValPtr;
int intVal;
int* intValPtr;
};
// A pointer to ShP10PhysicalBinding or ShP20PhysicalBinding
void* targetDependentData; // in-out
} ShBindingExt;
//
// to specify the type of binding
//
typedef enum {
EAttribute,
EUniform,
EVarying,
EFunction,
EConstant,
EFunctionRelocation,
EArbVertexLocal,
EArbVertexEnv,
EArbFragmentLocal,
EArbFragmentEnv,
EState,
ENoBindingType } ShBindingType;
typedef struct {
// a pointer to ShBindingExt
ShBindingExt* pBinding;
int numOfBindings;
ShBindingType type;
} ShBindingTableExt;
typedef struct {
ShBindingTableExt *bindingTable;
int numOfBindingTables;
} ShBindingList;
SH_IMPORT_EXPORT ShHandle ShConstructBindings();
SH_IMPORT_EXPORT ShHandle ShConstructLibrary();
SH_IMPORT_EXPORT ShHandle ShAddBinding(ShHandle bindingHandle,
ShBindingExt* binding,
ShBindingType type);
SH_IMPORT_EXPORT ShHandle ShAddBindingTable(ShHandle bindingHandle,
ShBindingTableExt *bindingTable,
ShBindingType type);
SH_IMPORT_EXPORT int ShLinkExt(
const ShHandle, // linker object
const ShHandle h[], // compiler objects to link together
const int numHandles);
SH_IMPORT_EXPORT ShBindingList* ShGetBindingList(const ShHandle linkerHandle);
SH_IMPORT_EXPORT ShBindingTableExt* ShGetBindingTable(const ShHandle linkerHandle, ShBindingType type);
SH_IMPORT_EXPORT int ShGetUniformLocationExt(const ShHandle linkerHandle, const char* name);
SH_IMPORT_EXPORT int ShSetFixedAttributeBindingsExt(const ShHandle, const ShBindingTableExt*);
SH_IMPORT_EXPORT int ShGetUniformLocationExt2(const ShHandle handle, const char* name, int* location, int* offset);
SH_IMPORT_EXPORT int ShSetVirtualLocation(const ShHandle handle, ShBindingType type, int bindingIndex, int virtualLocation);
SH_IMPORT_EXPORT int ShGetVirtualLocation(const ShHandle handle, ShBindingType type, int bindingIndex, int *virtualLocation);
//
// To get the bindings object from the linker object (after the link is done so that
// bindings can be added to the list)
//
SH_IMPORT_EXPORT ShHandle ShGetBindings(const ShHandle linkerHandle);
SH_IMPORT_EXPORT int ShAddLibraryCode(ShHandle library, const char* name, const ShHandle objectCodes[], const int numHandles);
/*****************************************************************************
This code is used by the new shared linker
*****************************************************************************/
//
// Each programmable unit has a UnitExecutable. Targets may subclass
// and append to this as desired.
//
typedef struct {
int name; // name of unit to which executable is targeted
int entry; // a target specific entry point
int count; // size of executable
const void* code; // read-only code
} ShUnitExecutable;
//
// The "void*" returned from ShGetExecutable() will be an ShExecutable
//
typedef struct {
int count; // count of unit executables
ShUnitExecutable* executables;
} ShExecutable;
SH_IMPORT_EXPORT ShExecutable* ShGetExecutableExt(const ShHandle linkerHandle);
typedef struct {
int numThread;
int stackSpacePerThread;
int visBufferValidity; // essenatially a boolean
int shaderFragTerminationStatus; // essentially a boolean
} ShDeviceInfo;
#ifdef __cplusplus
}
#endif
#endif // _SHADERLANG_EXTENSION_INCLUDED_
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