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403 lines
18 KiB
403 lines
18 KiB
//========= Copyright Valve Corporation, All rights reserved. ============// |
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// TOGL CODE LICENSE |
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// |
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// Copyright 2011-2014 Valve Corporation |
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// All Rights Reserved. |
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// |
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// Permission is hereby granted, free of charge, to any person obtaining a copy |
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// of this software and associated documentation files (the "Software"), to deal |
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// in the Software without restriction, including without limitation the rights |
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
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// copies of the Software, and to permit persons to whom the Software is |
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// furnished to do so, subject to the following conditions: |
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// |
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// The above copyright notice and this permission notice shall be included in |
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// all copies or substantial portions of the Software. |
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// |
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE |
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, |
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN |
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// THE SOFTWARE. |
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// |
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// glentrypoints.h |
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// |
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//=============================================================================== |
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#ifndef GLENTRYPOINTS_H |
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#define GLENTRYPOINTS_H |
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#pragma once |
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#ifdef DX_TO_GL_ABSTRACTION |
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#include "tier0/platform.h" |
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#include "tier0/vprof_telemetry.h" |
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#include "interface.h" |
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#include "togl/rendermechanism.h" |
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void *VoidFnPtrLookup_GlMgr(const char *fn, bool &okay, const bool bRequired, void *fallback=NULL); |
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#if GL_USE_EXECUTE_HELPER_FOR_ALL_API_CALLS |
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class CGLExecuteHelperBase |
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{ |
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public: |
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inline void StartCall(const char *pName); |
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inline void StopCall(const char *pName); |
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#if GL_TRACK_API_TIME |
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TmU64 m_nStartTime; |
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#endif |
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}; |
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template < class FunctionType, typename Result > |
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class CGLExecuteHelper : public CGLExecuteHelperBase |
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{ |
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public: |
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inline CGLExecuteHelper(FunctionType pFn, const char *pName ) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(); StopCall(pName); } |
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template<typename A> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a); StopCall(pName); } |
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template<typename A, typename B> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b); StopCall(pName); } |
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template<typename A, typename B, typename C> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e, f); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e, f, g); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e, f, g, h); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H, typename I> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h, I i) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e, f, g, h, i); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H, typename I, typename J> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h, I i, J j) : m_pFn( pFn ) { StartCall(pName); m_Result = (*m_pFn)(a, b, c, d, e, f, g, h, i, j); StopCall(pName); } |
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inline operator Result() const { return m_Result; } |
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inline operator char*() const { return (char*)m_Result; } |
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FunctionType m_pFn; |
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Result m_Result; |
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}; |
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template < class FunctionType> |
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class CGLExecuteHelper<FunctionType, void> : public CGLExecuteHelperBase |
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{ |
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public: |
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inline CGLExecuteHelper(FunctionType pFn, const char *pName ) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(); StopCall(pName); } |
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template<typename A> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a); StopCall(pName); } |
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template<typename A, typename B> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b); StopCall(pName); } |
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template<typename A, typename B, typename C> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e, f); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e, f, g); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e, f, g, h); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H, typename I> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h, I i) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e, f, g, h, i); StopCall(pName); } |
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template<typename A, typename B, typename C, typename D, typename E, typename F, typename G, typename H, typename I, typename J> inline CGLExecuteHelper(FunctionType pFn, const char *pName, A a, B b, C c, D d, E e, F f, G g, H h, I i, J j) : m_pFn( pFn ) { StartCall(pName); (*m_pFn)(a, b, c, d, e, f, g, h, i, j); StopCall(pName); } |
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FunctionType m_pFn; |
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}; |
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#endif |
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template < class FunctionType, typename Result > |
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class CDynamicFunctionOpenGLBase |
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{ |
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public: |
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// Construct with a NULL function pointer. You must manually call |
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// Lookup() before you can call a dynamic function through this interface. |
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CDynamicFunctionOpenGLBase() : m_pFn(NULL) {} |
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// Construct and do a lookup right away. You will need to make sure that |
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// the lookup actually succeeded, as the gl library might have failed to load |
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// or (fn) might not exist in it. |
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CDynamicFunctionOpenGLBase(const char *fn, FunctionType fallback=NULL) : m_pFn(NULL) |
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{ |
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Lookup(fn, fallback); |
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} |
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// Construct and do a lookup right away. See comments in Lookup() about what (okay) does. |
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CDynamicFunctionOpenGLBase(const char *fn, bool &okay, FunctionType fallback=NULL) : m_pFn(NULL) |
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{ |
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Lookup(fn, okay, fallback); |
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} |
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// Load library if necessary, look up symbol. Returns true and sets |
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// m_pFn on successful lookup, returns false otherwise. If the |
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// function pointer is already looked up, this return true immediately. |
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// Use Reset() first if you want to look up the symbol again. |
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// This function will return false immediately unless (okay) is true. |
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// This allows you to chain lookups like this: |
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// bool okay = true; |
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// x.Lookup(lib, "x", okay); |
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// y.Lookup(lib, "y", okay); |
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// z.Lookup(lib, "z", okay); |
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// if (okay) { printf("All functions were loaded successfully!\n"); } |
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// If you supply a fallback, it'll be used if the lookup fails (and if |
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// non-NULL, means this will always return (okay)). |
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bool Lookup(const char *fn, bool &okay, FunctionType fallback=NULL) |
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{ |
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if (!okay) |
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return false; |
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else if (this->m_pFn == NULL) |
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{ |
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this->m_pFn = (FunctionType) VoidFnPtrLookup_GlMgr(fn, okay, false, (void *) fallback); |
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this->SetFuncName( fn ); |
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} |
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okay = m_pFn != NULL; |
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return okay; |
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} |
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// Load library if necessary, look up symbol. Returns true and sets |
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// m_pFn on successful lookup, returns false otherwise. If the |
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// function pointer is already looked up, this return true immediately. |
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// Use Reset() first if you want to look up the symbol again. |
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// This function will return false immediately unless (okay) is true. |
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// If you supply a fallback, it'll be used if the lookup fails (and if |
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// non-NULL, means this will always return true). |
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bool Lookup(const char *fn, FunctionType fallback=NULL) |
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{ |
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bool okay = true; |
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return Lookup(fn, okay, fallback); |
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} |
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// Invalidates the current lookup. Makes the function pointer NULL. You |
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// will need to call Lookup() before you can call a dynamic function |
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// through this interface again. |
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void Reset() { m_pFn = NULL; } |
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// Force this to be a specific function pointer. |
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void Force(FunctionType ptr) { m_pFn = ptr; } |
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// Retrieve the actual function pointer. |
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FunctionType Pointer() const { return m_pFn; } |
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#if GL_USE_EXECUTE_HELPER_FOR_ALL_API_CALLS |
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#if GL_TELEMETRY_ZONES || GL_DUMP_ALL_API_CALLS |
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#define GL_FUNC_NAME m_szName |
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#else |
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#define GL_FUNC_NAME "" |
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#endif |
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inline CGLExecuteHelper<FunctionType, Result> operator() () const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME ); } |
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template<typename T> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a); } |
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template<typename T, typename U> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b); } |
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template<typename T, typename U, typename V> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c ) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c); } |
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template<typename T, typename U, typename V, typename W> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d); } |
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template<typename T, typename U, typename V, typename W, typename X> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e); } |
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template<typename T, typename U, typename V, typename W, typename X, typename Y> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e, Y f) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e, f); } |
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template<typename T, typename U, typename V, typename W, typename X, typename Y, typename Z> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e, Y f, Z g) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e, f, g); } |
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template<typename T, typename U, typename V, typename W, typename X, typename Y, typename Z, typename A> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e, Y f, Z g, A h) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e, f, g, h); } |
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template<typename T, typename U, typename V, typename W, typename X, typename Y, typename Z, typename A, typename B> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e, Y f, Z g, A h, B i) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e, f, g, h, i); } |
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template<typename T, typename U, typename V, typename W, typename X, typename Y, typename Z, typename A, typename B, typename C> |
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inline CGLExecuteHelper<FunctionType, Result> operator() (T a, U b, V c, W d, X e, Y f, Z g, A h, B i, C j) const { return CGLExecuteHelper<FunctionType, Result>(m_pFn, GL_FUNC_NAME, a, b, c, d, e, f, g, h, i, j); } |
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#else |
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operator FunctionType() const { return m_pFn; } |
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#endif |
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// Can be used to verify that we have an actual function looked up and |
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// ready to call: if (!MyDynFunc) { printf("Function not found!\n"); } |
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operator bool () const { return m_pFn != NULL; } |
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bool operator !() const { return m_pFn == NULL; } |
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protected: |
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FunctionType m_pFn; |
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#if GL_TELEMETRY_ZONES || GL_DUMP_ALL_API_CALLS |
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char m_szName[32]; |
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inline void SetFuncName(const char *pFn) { V_strncpy( m_szName, pFn, sizeof( m_szName ) ); } |
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#else |
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inline void SetFuncName(const char *pFn) { (void)pFn; } |
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#endif |
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}; |
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// This works a lot like CDynamicFunctionMustInit, but we use SDL_GL_GetProcAddress(). |
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template < const bool bRequired, class FunctionType, typename Result > |
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class CDynamicFunctionOpenGL : public CDynamicFunctionOpenGLBase< FunctionType, Result > |
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{ |
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private: // forbid default constructor. |
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CDynamicFunctionOpenGL() {} |
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public: |
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CDynamicFunctionOpenGL(const char *fn, FunctionType fallback=NULL) |
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{ |
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bool okay = true; |
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Lookup(fn, okay, fallback); |
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this->SetFuncName( fn ); |
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} |
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CDynamicFunctionOpenGL(const char *fn, bool &okay, FunctionType fallback=NULL) |
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{ |
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Lookup(fn, okay, fallback); |
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this->SetFuncName( fn ); |
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} |
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// Please note this is not virtual. |
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// !!! FIXME: we might want to fall back and try "EXT" or "ARB" versions in some case. |
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bool Lookup(const char *fn, bool &okay, FunctionType fallback=NULL) |
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{ |
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if (this->m_pFn == NULL) |
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{ |
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this->m_pFn = (FunctionType) VoidFnPtrLookup_GlMgr(fn, okay, bRequired, (void *) fallback); |
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this->SetFuncName( fn ); |
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} |
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return okay; |
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} |
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}; |
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enum GLDriverStrings_t |
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{ |
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cGLVendorString, |
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cGLRendererString, |
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cGLVersionString, |
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cGLExtensionsString, |
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cGLTotalDriverStrings |
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}; |
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enum GLDriverProvider_t |
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{ |
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cGLDriverProviderUnknown, |
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cGLDriverProviderNVIDIA, |
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cGLDriverProviderAMD, |
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cGLDriverProviderIntel, |
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cGLDriverProviderIntelOpenSource, |
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cGLDriverProviderApple, |
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cGLTotalDriverProviders |
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}; |
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// This provides all the entry points for a given OpenGL context. |
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// ENTRY POINTS ARE ONLY VALID FOR THE CONTEXT THAT WAS CURRENT WHEN |
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// YOU LOOKED THEM UP. 99% of the time, this is not a problem, but |
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// that 1% is really hard to track down. Always access the GL |
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// through this class! |
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class COpenGLEntryPoints |
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{ |
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COpenGLEntryPoints( const COpenGLEntryPoints & ); |
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COpenGLEntryPoints &operator= ( const COpenGLEntryPoints & ); |
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public: |
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// The GL context you are looking up entry points for must be current when you construct this object! |
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COpenGLEntryPoints(); |
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~COpenGLEntryPoints(); |
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void ClearEntryPoints(); |
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uint64 m_nTotalGLCycles, m_nTotalGLCalls; |
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int m_nOpenGLVersionMajor; // if GL_VERSION is 2.1.0, this will be set to 2. |
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int m_nOpenGLVersionMinor; // if GL_VERSION is 2.1.0, this will be set to 1. |
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int m_nOpenGLVersionPatch; // if GL_VERSION is 2.1.0, this will be set to 0. |
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bool m_bHave_OpenGL; |
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char *m_pGLDriverStrings[cGLTotalDriverStrings]; |
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GLDriverProvider_t m_nDriverProvider; |
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#ifdef OSX |
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#define GL_EXT(x,glmajor,glminor) bool m_bHave_##x; |
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#define GL_FUNC(ext,req,ret,fn,arg,call) CDynamicFunctionOpenGL< req, ret (*) arg, ret > fn; |
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#define GL_FUNC_VOID(ext,req,fn,arg,call) CDynamicFunctionOpenGL< req, void (*) arg, void > fn; |
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#else |
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#define GL_EXT(x,glmajor,glminor) bool m_bHave_##x; |
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#define GL_FUNC(ext,req,ret,fn,arg,call) CDynamicFunctionOpenGL< req, ret (APIENTRY *) arg, ret > fn; |
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#define GL_FUNC_VOID(ext,req,fn,arg,call) CDynamicFunctionOpenGL< req, void (APIENTRY *) arg, void > fn; |
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#endif |
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#include "togl/glfuncs.inl" |
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#undef GL_FUNC_VOID |
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#undef GL_FUNC |
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#undef GL_EXT |
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bool HasSwapTearExtension() const |
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{ |
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#ifdef _WIN32 |
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return m_bHave_WGL_EXT_swap_control_tear; |
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#else |
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return m_bHave_GLX_EXT_swap_control_tear; |
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#endif |
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} |
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}; |
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// This will be set to the current OpenGL context's entry points. |
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extern COpenGLEntryPoints *gGL; |
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typedef void * (*GL_GetProcAddressCallbackFunc_t)(const char *, bool &, const bool, void *); |
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#ifdef TOGL_DLL_EXPORT |
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DLL_EXPORT COpenGLEntryPoints *ToGLConnectLibraries( CreateInterfaceFn factory ); |
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DLL_EXPORT void ToGLDisconnectLibraries(); |
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DLL_EXPORT COpenGLEntryPoints *GetOpenGLEntryPoints(GL_GetProcAddressCallbackFunc_t callback); |
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DLL_EXPORT void ClearOpenGLEntryPoints(); |
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#else |
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DLL_IMPORT COpenGLEntryPoints *ToGLConnectLibraries( CreateInterfaceFn factory ); |
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DLL_IMPORT void ToGLDisconnectLibraries(); |
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DLL_IMPORT COpenGLEntryPoints *GetOpenGLEntryPoints(GL_GetProcAddressCallbackFunc_t callback); |
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DLL_IMPORT void ClearOpenGLEntryPoints(); |
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#endif |
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#if GL_USE_EXECUTE_HELPER_FOR_ALL_API_CALLS |
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inline void CGLExecuteHelperBase::StartCall(const char *pName) |
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{ |
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(void)pName; |
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#if GL_TELEMETRY_ZONES |
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tmEnter( TELEMETRY_LEVEL3, TMZF_NONE, pName ); |
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#endif |
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#if GL_TRACK_API_TIME |
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m_nStartTime = tmFastTime(); |
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#endif |
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#if GL_DUMP_ALL_API_CALLS |
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static bool s_bDumpCalls; |
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if ( s_bDumpCalls ) |
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{ |
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char buf[128]; |
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buf[0] = 'G'; |
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buf[1] = 'L'; |
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buf[2] = ':'; |
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size_t l = strlen( pName ); |
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memcpy( buf + 3, pName, l ); |
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buf[3 + l] = '\n'; |
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buf[4 + l] = '\0'; |
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Plat_DebugString( buf ); |
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} |
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#endif |
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} |
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inline void CGLExecuteHelperBase::StopCall(const char *pName) |
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{ |
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#if GL_TRACK_API_TIME |
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uint64 nTotalCycles = tmFastTime() - m_nStartTime; |
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#endif |
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#if GL_TELEMETRY_ZONES |
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tmLeave( TELEMETRY_LEVEL3 ); |
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#endif |
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#if GL_TRACK_API_TIME |
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//double flMilliseconds = g_Telemetry.flRDTSCToMilliSeconds * nTotalCycles; |
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if (gGL) |
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{ |
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gGL->m_nTotalGLCycles += nTotalCycles; |
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gGL->m_nTotalGLCalls++; |
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} |
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#endif |
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} |
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#endif |
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#endif // DX_TO_GL_ABSTRACTION |
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#endif // GLENTRYPOINTS_H
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