180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/* 380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Copyright 2011 Google Inc. 480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Use of this source code is governed by a BSD-style license that can be 680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * found in the LICENSE file. 780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#ifndef GrGLConfig_DEFINED 1280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#define GrGLConfig_DEFINED 1380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#include "GrTypes.h" 1580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 1680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/** 1780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Optional GL config file. 1880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 1980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#ifdef GR_GL_CUSTOM_SETUP_HEADER 2080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #include GR_GL_CUSTOM_SETUP_HEADER 2180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 2280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 2380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_FUNCTION_TYPE) 2480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_FUNCTION_TYPE 2580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 2680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 2780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/** 2880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * The following are optional defines that can be enabled at the compiler 2980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * command line, in a IDE project, in a GrUserConfig.h file, or in a GL custom 3080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * file (if one is in use). If a GR_GL_CUSTOM_SETUP_HEADER is used they can 3180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * also be placed there. 3280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 3380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_LOG_CALLS: if 1 Gr can print every GL call using GrPrintf. Defaults to 3480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 0. Logging can be enabled and disabled at runtime using a debugger via to 3580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * global gLogCallsGL. The initial value of gLogCallsGL is controlled by 3680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_LOG_CALLS_START. 3780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 3880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_LOG_CALLS_START: controls the initial value of gLogCallsGL when 3980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_LOG_CALLS is 1. Defaults to 0. 4080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 4180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_CHECK_ERROR: if enabled Gr can do a glGetError() after every GL call. 4280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Defaults to 1 if GR_DEBUG is set, otherwise 0. When GR_GL_CHECK_ERROR is 1 4380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * this can be toggled in a debugger using the gCheckErrorGL global. The initial 4480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * value of gCheckErrorGL is controlled by by GR_GL_CHECK_ERROR_START. 4580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 4680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_CHECK_ERROR_START: controls the initial value of gCheckErrorGL 4780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * when GR_GL_CHECK_ERROR is 1. Defaults to 1. 4880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 4980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_NO_CONSTANT_ATTRIBUTES: if this evaluates to true then the GL backend 5080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * will use uniforms instead of attributes in all cases when there is not 5180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * per-vertex data. This is important when the underlying GL implementation 5280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * doesn't actually support immediate style attribute values (e.g. when 5380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * the GL stream is converted to DX as in ANGLE on Chrome). Defaults to 0. 5480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 5580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_USE_BUFFER_DATA_NULL_HINT: When specifing new data for a vertex/index 5680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * buffer that replaces old data Ganesh can give a hint to the driver that the 5780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * previous data will not be used in future draws like this: 5880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * glBufferData(GL_..._BUFFER, size, NULL, usage); //<--hint, NULL means 5980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * glBufferSubData(GL_..._BUFFER, 0, lessThanSize, data) // old data can't be 6080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * // used again. 6180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * However, this can be an unoptimization on some platforms, esp. Chrome. 6280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Chrome's cmd buffer will create a new allocation and memset the whole thing 6380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * to zero (for security reasons). Defaults to 1 (enabled). 6480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 6580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_PER_GL_FUNC_CALLBACK: When set to 1 the GrGLInterface object provides 6680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * a function pointer that is called just before every gl function. The ptr must 6780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * be valid (i.e. there is no NULL check). However, by default the callback will 6880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * be set to a function that does nothing. The signature of the function is: 6980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * void function(const GrGLInterface*) 7080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * It is not extern "C". 7180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * The GrGLInterface field fCallback specifies the function ptr and there is an 7280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * additional field fCallbackData of type intptr_t for client data. 7380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 7480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_RGBA_8888_PIXEL_OPS_SLOW: Set this to 1 if it is known that performing 7580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * glReadPixels / glTex(Sub)Image with format=GL_RGBA, type=GL_UNISIGNED_BYTE is 7680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * significantly slower than format=GL_BGRA, type=GL_UNISIGNED_BYTE. 7780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 7880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL: Set this to 1 if calling 7980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * glReadPixels to read the entire framebuffer is faster than calling it with 8080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * the same sized rectangle but with a framebuffer bound that is larger than 8180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * the rectangle read. 8280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 8380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_CHECK_ALLOC_WITH_GET_ERROR: If set to 1 this will then glTexImage, 8480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * glBufferData, glRenderbufferStorage, etc will be checked for errors. This 8580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * amounts to ensuring the error is GL_NO_ERROR, calling the allocating 8680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * function, and then checking that the error is still GL_NO_ERROR. When the 8780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * value is 0 we will assume no error was generated without checking. 8880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 8980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT: We will normally check the FBO status 9080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * every time we bind a texture or renderbuffer to an FBO. However, in some 9180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * environments CheckFrameBufferStatus is very expensive. If this is set we will 9280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * check the first time we use a color format or a combination of color / 9380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * stencil formats as attachments. If the FBO is complete we will assume 9480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * subsequent attachments with the same formats are complete as well. 9580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 9680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GR_GL_USE_NV_PATH_RENDERING: Enable experimental support for 9780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * GL_NV_path_rendering. There are known issues with clipping, non-AA paths, and 9880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * perspective. 99096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * 100096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * GR_GL_MUST_USE_VBO: Indicates that all vertices and indices must be rendered 101096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * from VBOs. Chromium's command buffer doesn't allow glVertexAttribArray with 102096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * ARARY_BUFFER 0 bound or glDrawElements with ELEMENT_ARRAY_BUFFER 0 bound. 103096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * 104096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE is for compatibility with the new version 105096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * of the OpenGLES2.0 headers from Khronos. glShaderSource now takes a const char * const *, 106096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger * instead of a const char 10780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 10880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 10980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_LOG_CALLS) 11080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_LOG_CALLS GR_DEBUG 11180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 11280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 11380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_LOG_CALLS_START) 11480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_LOG_CALLS_START 0 11580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 11680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 11780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_CHECK_ERROR) 11880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_CHECK_ERROR GR_DEBUG 11980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 12080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 12180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_CHECK_ERROR_START) 12280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_CHECK_ERROR_START 1 12380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 12480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 12580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_NO_CONSTANT_ATTRIBUTES) 12680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_NO_CONSTANT_ATTRIBUTES 0 12780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 12880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 12980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_USE_BUFFER_DATA_NULL_HINT) 13080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_USE_BUFFER_DATA_NULL_HINT 1 13180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 13280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 13380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_PER_GL_FUNC_CALLBACK) 13480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_PER_GL_FUNC_CALLBACK 0 13580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 13680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 13780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_RGBA_8888_PIXEL_OPS_SLOW) 13880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_RGBA_8888_PIXEL_OPS_SLOW 0 13980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 14080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 14180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL) 14280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_FULL_READPIXELS_FASTER_THAN_PARTIAL 0 14380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 14480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 14580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_CHECK_ALLOC_WITH_GET_ERROR) 14680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_CHECK_ALLOC_WITH_GET_ERROR 1 14780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 14880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 14980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT) 15080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_CHECK_FBO_STATUS_ONCE_PER_FORMAT 0 15180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 15280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 15380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#if !defined(GR_GL_USE_NV_PATH_RENDERING) 15480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru #define GR_GL_USE_NV_PATH_RENDERING 0 15580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 15680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 157096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger#if !defined(GR_GL_MUST_USE_VBO) 158096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger #define GR_GL_MUST_USE_VBO 0 159096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger#endif 160096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger 161096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger#if !defined(GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE) 162096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger #define GR_GL_USE_NEW_SHADER_SOURCE_SIGNATURE 0 163096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger#endif 164096defe64d408e54474fe19f418c95bf1a554fc7Derek Sollenberger 16580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru/** 16680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * There is a strange bug that occurs on Macs with NVIDIA GPUs. We don't 16780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * fully understand it. When (element) array buffers are continually 16880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * respecified using glBufferData performance can fall off of a cliff. The 16980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * driver winds up performing many DMA mapping / unmappings and chews up ~50% of 17080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * the core. However, it has been observed that occaisonally respecifiying the 17180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * buffer using glBufferData and then writing data using glBufferSubData 17280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * prevents the bad behavior. 17380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 17480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * There is a lot of uncertainty around this issue. In Chrome backgrounding 17580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * the tab somehow initiates this behavior and we don't know what the connection 17680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * is. Another observation is that Chrome's cmd buffer server will actually 17780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * create a buffer full of zeros when it sees a NULL data param (for security 17880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * reasons). If this is disabled and NULL is actually passed all the way to the 17980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * driver then the workaround doesn't help. 18080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 18180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * The issue is tracked at: 18280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * http://code.google.com/p/chromium/issues/detail?id=114865 18380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 18480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * When the workaround is enabled we will use the glBufferData / glBufferSubData 18580bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * trick every 128 array buffer uploads. 18680bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * 18780bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * Hopefully we will understand this better and have a cleaner fix or get a 18880bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru * OS/driver level fix. 18980bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru */ 19080bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#define GR_GL_MAC_BUFFER_OBJECT_PERFOMANCE_WORKAROUND \ 19180bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru (GR_MAC_BUILD && \ 19280bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru !GR_GL_USE_BUFFER_DATA_NULL_HINT) 19380bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru 19480bacfeb4bda06541e8695bd502229727bccfeaJean-Baptiste Queru#endif 195