[5] | 1 | /* |
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| 2 | ----------------------------------------------------------------------------- |
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| 3 | This source file is part of OGRE |
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| 4 | (Object-oriented Graphics Rendering Engine) |
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| 5 | For the latest info, see http://www.ogre3d.org/ |
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| 6 | |
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| 7 | Copyright (c) 2000-2006 Torus Knot Software Ltd |
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| 8 | Also see acknowledgements in Readme.html |
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| 9 | |
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| 10 | This program is free software; you can redistribute it and/or modify it under |
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| 11 | the terms of the GNU Lesser General Public License as published by the Free Software |
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| 12 | Foundation; either version 2 of the License, or (at your option) any later |
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| 13 | version. |
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| 14 | |
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| 15 | This program is distributed in the hope that it will be useful, but WITHOUT |
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| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS |
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| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details. |
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| 18 | |
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| 19 | You should have received a copy of the GNU Lesser General Public License along with |
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| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple |
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| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to |
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| 22 | http://www.gnu.org/copyleft/lesser.txt. |
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| 23 | |
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| 24 | You may alternatively use this source under the terms of a specific version of |
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| 25 | the OGRE Unrestricted License provided you have obtained such a license from |
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| 26 | Torus Knot Software Ltd. |
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| 27 | ----------------------------------------------------------------------------- |
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| 28 | */ |
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| 29 | |
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| 30 | #include "OgreGLFBORenderTexture.h" |
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| 31 | #include "OgreGLPixelFormat.h" |
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| 32 | #include "OgreLogManager.h" |
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| 33 | #include "OgreStringConverter.h" |
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| 34 | #include "OgreRoot.h" |
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| 35 | #include "OgreGLHardwarePixelBuffer.h" |
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| 36 | #include "OgreGLFBOMultiRenderTarget.h" |
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| 37 | |
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| 38 | namespace Ogre { |
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| 39 | |
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| 40 | //----------------------------------------------------------------------------- |
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| 41 | GLFBORenderTexture::GLFBORenderTexture(GLFBOManager *manager, const String &name, |
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| 42 | const GLSurfaceDesc &target): |
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| 43 | GLRenderTexture(name, target), |
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| 44 | mFB(manager) |
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| 45 | { |
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| 46 | // Bind target to surface 0 and initialise |
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| 47 | mFB.bindSurface(0, target); |
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| 48 | // Get attributes |
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| 49 | mWidth = mFB.getWidth(); |
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| 50 | mHeight = mFB.getHeight(); |
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| 51 | } |
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| 52 | |
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| 53 | void GLFBORenderTexture::getCustomAttribute(const String& name, void* pData) |
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| 54 | { |
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| 55 | if(name=="FBO") |
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| 56 | { |
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| 57 | *static_cast<GLFrameBufferObject **>(pData) = &mFB; |
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| 58 | } |
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| 59 | } |
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| 60 | |
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| 61 | /// Size of probe texture |
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| 62 | #define PROBE_SIZE 16 |
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| 63 | |
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| 64 | /// Stencil and depth formats to be tried |
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| 65 | static const GLenum stencilFormats[] = |
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| 66 | { |
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| 67 | GL_NONE, // No stencil |
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| 68 | GL_STENCIL_INDEX1_EXT, |
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| 69 | GL_STENCIL_INDEX4_EXT, |
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| 70 | GL_STENCIL_INDEX8_EXT, |
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| 71 | GL_STENCIL_INDEX16_EXT |
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| 72 | }; |
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| 73 | static const size_t stencilBits[] = |
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| 74 | { |
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| 75 | 0, 1, 4, 8, 16 |
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| 76 | }; |
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| 77 | #define STENCILFORMAT_COUNT (sizeof(stencilFormats)/sizeof(GLenum)) |
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| 78 | |
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| 79 | static const GLenum depthFormats[] = |
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| 80 | { |
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| 81 | GL_NONE, |
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| 82 | GL_DEPTH_COMPONENT16, |
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| 83 | GL_DEPTH_COMPONENT24, // Prefer 24 bit depth |
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| 84 | GL_DEPTH_COMPONENT32, |
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| 85 | GL_DEPTH24_STENCIL8_EXT // packed depth / stencil |
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| 86 | }; |
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| 87 | static const size_t depthBits[] = |
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| 88 | { |
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| 89 | 0,16,24,32,24 |
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| 90 | }; |
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| 91 | #define DEPTHFORMAT_COUNT (sizeof(depthFormats)/sizeof(GLenum)) |
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| 92 | |
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| 93 | GLFBOManager::GLFBOManager(bool atimode): |
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| 94 | mATIMode(atimode) |
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| 95 | { |
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| 96 | detectFBOFormats(); |
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| 97 | |
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| 98 | glGenFramebuffersEXT(1, &mTempFBO); |
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| 99 | } |
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| 100 | |
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| 101 | GLFBOManager::~GLFBOManager() |
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| 102 | { |
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| 103 | if(!mRenderBufferMap.empty()) |
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| 104 | { |
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| 105 | LogManager::getSingleton().logMessage("GL: Warning! GLFBOManager destructor called, but not all renderbuffers were released."); |
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| 106 | } |
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| 107 | |
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| 108 | glDeleteFramebuffersEXT(1, &mTempFBO); |
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| 109 | } |
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| 110 | |
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| 111 | /** Try a certain FBO format, and return the status. Also sets mDepthRB and mStencilRB. |
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| 112 | @returns true if this combo is supported |
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| 113 | false if this combo is not supported |
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| 114 | */ |
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| 115 | GLuint GLFBOManager::_tryFormat(GLenum depthFormat, GLenum stencilFormat) |
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| 116 | { |
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| 117 | GLuint status, depthRB = 0, stencilRB = 0; |
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| 118 | bool failed = false; // flag on GL errors |
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| 119 | |
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| 120 | if(depthFormat != GL_NONE) |
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| 121 | { |
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| 122 | /// Generate depth renderbuffer |
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| 123 | glGenRenderbuffersEXT(1, &depthRB); |
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| 124 | /// Bind it to FBO |
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| 125 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, depthRB); |
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| 126 | |
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| 127 | /// Allocate storage for depth buffer |
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| 128 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, depthFormat, |
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| 129 | PROBE_SIZE, PROBE_SIZE); |
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| 130 | |
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| 131 | /// Attach depth |
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| 132 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
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| 133 | GL_RENDERBUFFER_EXT, depthRB); |
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| 134 | } |
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| 135 | |
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| 136 | if(stencilFormat != GL_NONE) |
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| 137 | { |
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| 138 | /// Generate stencil renderbuffer |
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| 139 | glGenRenderbuffersEXT(1, &stencilRB); |
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| 140 | /// Bind it to FBO |
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| 141 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, stencilRB); |
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| 142 | glGetError(); // NV hack |
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| 143 | /// Allocate storage for stencil buffer |
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| 144 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, stencilFormat, |
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| 145 | PROBE_SIZE, PROBE_SIZE); |
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| 146 | if(glGetError() != GL_NO_ERROR) // NV hack |
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| 147 | failed = true; |
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| 148 | /// Attach stencil |
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| 149 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, |
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| 150 | GL_RENDERBUFFER_EXT, stencilRB); |
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| 151 | if(glGetError() != GL_NO_ERROR) // NV hack |
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| 152 | failed = true; |
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| 153 | } |
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| 154 | |
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| 155 | status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); |
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| 156 | /// If status is negative, clean up |
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| 157 | // Detach and destroy |
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| 158 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0); |
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| 159 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0); |
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| 160 | if (depthRB) |
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| 161 | glDeleteRenderbuffersEXT(1, &depthRB); |
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| 162 | if (stencilRB) |
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| 163 | glDeleteRenderbuffersEXT(1, &stencilRB); |
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| 164 | |
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| 165 | return status == GL_FRAMEBUFFER_COMPLETE_EXT && !failed; |
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| 166 | } |
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| 167 | |
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| 168 | /** Try a certain packed depth/stencil format, and return the status. |
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| 169 | @returns true if this combo is supported |
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| 170 | false if this combo is not supported |
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| 171 | */ |
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| 172 | bool GLFBOManager::_tryPackedFormat(GLenum packedFormat) |
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| 173 | { |
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| 174 | GLuint packedRB; |
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| 175 | bool failed = false; // flag on GL errors |
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| 176 | |
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| 177 | /// Generate renderbuffer |
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| 178 | glGenRenderbuffersEXT(1, &packedRB); |
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| 179 | |
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| 180 | /// Bind it to FBO |
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| 181 | glBindRenderbufferEXT(GL_RENDERBUFFER_EXT, packedRB); |
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| 182 | |
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| 183 | /// Allocate storage for buffer |
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| 184 | glRenderbufferStorageEXT(GL_RENDERBUFFER_EXT, packedFormat, PROBE_SIZE, PROBE_SIZE); |
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| 185 | glGetError(); // NV hack |
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| 186 | |
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| 187 | /// Attach depth |
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| 188 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, |
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| 189 | GL_RENDERBUFFER_EXT, packedRB); |
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| 190 | if(glGetError() != GL_NO_ERROR) // NV hack |
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| 191 | failed = true; |
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| 192 | |
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| 193 | /// Attach stencil |
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| 194 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, |
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| 195 | GL_RENDERBUFFER_EXT, packedRB); |
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| 196 | if(glGetError() != GL_NO_ERROR) // NV hack |
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| 197 | failed = true; |
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| 198 | |
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| 199 | GLuint status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); |
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| 200 | |
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| 201 | /// Detach and destroy |
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| 202 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_DEPTH_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0); |
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| 203 | glFramebufferRenderbufferEXT(GL_FRAMEBUFFER_EXT, GL_STENCIL_ATTACHMENT_EXT, GL_RENDERBUFFER_EXT, 0); |
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| 204 | glDeleteRenderbuffersEXT(1, &packedRB); |
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| 205 | |
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| 206 | return status == GL_FRAMEBUFFER_COMPLETE_EXT && !failed; |
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| 207 | } |
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| 208 | |
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| 209 | /** Detect which internal formats are allowed as RTT |
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| 210 | Also detect what combinations of stencil and depth are allowed with this internal |
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| 211 | format. |
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| 212 | */ |
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| 213 | void GLFBOManager::detectFBOFormats() |
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| 214 | { |
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| 215 | // Try all formats, and report which ones work as target |
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| 216 | GLuint fb, tid; |
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| 217 | GLint old_drawbuffer, old_readbuffer; |
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| 218 | GLenum target = GL_TEXTURE_2D; |
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| 219 | |
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| 220 | glGetIntegerv (GL_DRAW_BUFFER, &old_drawbuffer); |
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| 221 | glGetIntegerv (GL_READ_BUFFER, &old_readbuffer); |
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| 222 | |
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| 223 | for(size_t x=0; x<PF_COUNT; ++x) |
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| 224 | { |
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| 225 | mProps[x].valid = false; |
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| 226 | |
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| 227 | // Fetch GL format token |
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| 228 | GLenum fmt = GLPixelUtil::getGLInternalFormat((PixelFormat)x); |
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| 229 | if(fmt == GL_NONE && x!=0) |
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| 230 | continue; |
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| 231 | |
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| 232 | // No test for compressed formats |
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| 233 | if(PixelUtil::isCompressed((PixelFormat)x)) |
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| 234 | continue; |
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| 235 | |
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| 236 | // Buggy ATI cards *crash* on non-RGB(A) formats |
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| 237 | int depths[4]; |
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| 238 | PixelUtil::getBitDepths((PixelFormat)x, depths); |
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| 239 | if(fmt!=GL_NONE && mATIMode && (!depths[0] || !depths[1] || !depths[2])) |
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| 240 | continue; |
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| 241 | |
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| 242 | // Create and attach framebuffer |
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| 243 | glGenFramebuffersEXT(1, &fb); |
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| 244 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, fb); |
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| 245 | if (fmt!=GL_NONE) |
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| 246 | { |
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| 247 | // Create and attach texture |
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| 248 | glGenTextures(1, &tid); |
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| 249 | glBindTexture(target, tid); |
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| 250 | |
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| 251 | // Set some default parameters so it won't fail on NVidia cards |
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| 252 | glTexParameteri(target, GL_TEXTURE_MAX_LEVEL, 0); |
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| 253 | glTexParameteri(target, GL_TEXTURE_MIN_FILTER, GL_NEAREST); |
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| 254 | glTexParameteri(target, GL_TEXTURE_MAG_FILTER, GL_NEAREST); |
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| 255 | glTexParameteri(target, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE); |
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| 256 | glTexParameteri(target, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE); |
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| 257 | |
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| 258 | glTexImage2D(target, 0, fmt, PROBE_SIZE, PROBE_SIZE, 0, GL_RGBA, GL_UNSIGNED_BYTE, 0); |
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| 259 | glFramebufferTexture2DEXT(GL_FRAMEBUFFER_EXT, GL_COLOR_ATTACHMENT0_EXT, |
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| 260 | target, tid, 0); |
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| 261 | } |
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| 262 | else |
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| 263 | { |
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| 264 | // Draw to nowhere -- stencil/depth only |
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| 265 | glDrawBuffer(GL_NONE); |
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| 266 | glReadBuffer(GL_NONE); |
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| 267 | } |
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| 268 | // Check status |
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| 269 | GLuint status = glCheckFramebufferStatusEXT(GL_FRAMEBUFFER_EXT); |
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| 270 | |
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| 271 | // Ignore status in case of fmt==GL_NONE, because no implementation will accept |
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| 272 | // a buffer without *any* attachment. Buffers with only stencil and depth attachment |
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| 273 | // might still be supported, so we must continue probing. |
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| 274 | if(fmt == GL_NONE || status == GL_FRAMEBUFFER_COMPLETE_EXT) |
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| 275 | { |
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| 276 | mProps[x].valid = true; |
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| 277 | StringUtil::StrStreamType str; |
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| 278 | str << "FBO " << PixelUtil::getFormatName((PixelFormat)x) |
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| 279 | << " depth/stencil support: "; |
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| 280 | |
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| 281 | // For each depth/stencil formats |
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| 282 | for (size_t depth = 0; depth < DEPTHFORMAT_COUNT; ++depth) |
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| 283 | { |
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| 284 | if (depthFormats[depth] != GL_DEPTH24_STENCIL8_EXT) |
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| 285 | { |
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| 286 | // General depth/stencil combination |
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| 287 | |
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| 288 | for (size_t stencil = 0; stencil < STENCILFORMAT_COUNT; ++stencil) |
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| 289 | { |
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| 290 | //StringUtil::StrStreamType l; |
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| 291 | //l << "Trying " << PixelUtil::getFormatName((PixelFormat)x) |
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| 292 | // << " D" << depthBits[depth] |
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| 293 | // << "S" << stencilBits[stencil]; |
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| 294 | //LogManager::getSingleton().logMessage(l.str()); |
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| 295 | |
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| 296 | if (_tryFormat(depthFormats[depth], stencilFormats[stencil])) |
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| 297 | { |
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| 298 | /// Add mode to allowed modes |
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| 299 | str << "D" << depthBits[depth] << "S" << stencilBits[stencil] << " "; |
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| 300 | FormatProperties::Mode mode; |
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| 301 | mode.depth = depth; |
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| 302 | mode.stencil = stencil; |
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| 303 | mProps[x].modes.push_back(mode); |
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| 304 | } |
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| 305 | } |
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| 306 | } |
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| 307 | else |
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| 308 | { |
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| 309 | // Packed depth/stencil format |
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| 310 | |
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| 311 | #if OGRE_PLATFORM == OGRE_PLATFORM_LINUX |
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| 312 | // Only query packed depth/stencil formats for 32-bit |
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| 313 | // non-floating point formats (ie not R32!) |
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| 314 | // Linux nVidia driver segfaults if you query others |
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| 315 | if (PixelUtil::getNumElemBits((PixelFormat)x) != 32 || |
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| 316 | PixelUtil::isFloatingPoint((PixelFormat)x)) |
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| 317 | { |
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| 318 | continue; |
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| 319 | } |
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| 320 | #endif |
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| 321 | |
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| 322 | if (_tryPackedFormat(depthFormats[depth])) |
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| 323 | { |
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| 324 | /// Add mode to allowed modes |
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| 325 | str << "Packed-D" << depthBits[depth] << "S" << 8 << " "; |
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| 326 | FormatProperties::Mode mode; |
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| 327 | mode.depth = depth; |
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| 328 | mode.stencil = 0; // unuse |
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| 329 | mProps[x].modes.push_back(mode); |
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| 330 | } |
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| 331 | } |
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| 332 | } |
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| 333 | |
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| 334 | LogManager::getSingleton().logMessage(str.str()); |
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| 335 | |
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| 336 | } |
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| 337 | // Delete texture and framebuffer |
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| 338 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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| 339 | glDeleteFramebuffersEXT(1, &fb); |
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| 340 | if (fmt!=GL_NONE) |
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| 341 | glDeleteTextures(1, &tid); |
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| 342 | } |
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| 343 | |
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| 344 | // It seems a bug in nVidia driver: glBindFramebufferEXT should restore |
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| 345 | // draw and read buffers, but in some unclear circumstances it won't. |
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| 346 | glDrawBuffer(old_drawbuffer); |
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| 347 | glReadBuffer(old_readbuffer); |
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| 348 | |
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| 349 | std::string fmtstring; |
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| 350 | for(size_t x=0; x<PF_COUNT; ++x) |
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| 351 | { |
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| 352 | if(mProps[x].valid) |
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| 353 | fmtstring += PixelUtil::getFormatName((PixelFormat)x)+" "; |
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| 354 | } |
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| 355 | LogManager::getSingleton().logMessage("[GL] : Valid FBO targets " + fmtstring); |
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| 356 | } |
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| 357 | void GLFBOManager::getBestDepthStencil(GLenum internalFormat, GLenum *depthFormat, GLenum *stencilFormat) |
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| 358 | { |
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| 359 | const FormatProperties &props = mProps[internalFormat]; |
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| 360 | /// Decide what stencil and depth formats to use |
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| 361 | /// [best supported for internal format] |
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| 362 | size_t bestmode=0; |
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| 363 | int bestscore=-1; |
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| 364 | for(size_t mode=0; mode<props.modes.size(); mode++) |
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| 365 | { |
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| 366 | #if 0 |
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| 367 | /// Always prefer D24S8 |
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| 368 | if(stencilBits[props.modes[mode].stencil]==8 && |
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| 369 | depthBits[props.modes[mode].depth]==24) |
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| 370 | { |
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| 371 | bestmode = mode; |
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| 372 | break; |
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| 373 | } |
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| 374 | #endif |
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| 375 | int desirability = 0; |
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| 376 | /// Find most desirable mode |
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| 377 | /// desirability == 0 if no depth, no stencil |
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| 378 | /// desirability == 1000...2000 if no depth, stencil |
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| 379 | /// desirability == 2000...3000 if depth, no stencil |
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| 380 | /// desirability == 3000+ if depth and stencil |
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| 381 | /// beyond this, the total numer of bits (stencil+depth) is maximised |
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| 382 | if(props.modes[mode].stencil) |
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| 383 | desirability += 1000; |
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| 384 | if(props.modes[mode].depth) |
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| 385 | desirability += 2000; |
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| 386 | if(depthBits[props.modes[mode].depth]==24) // Prefer 24 bit for now |
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| 387 | desirability += 500; |
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| 388 | if(depthFormats[props.modes[mode].depth]==GL_DEPTH24_STENCIL8_EXT) // Prefer 24/8 packed |
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| 389 | desirability += 5000; |
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| 390 | desirability += stencilBits[props.modes[mode].stencil] + depthBits[props.modes[mode].depth]; |
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| 391 | |
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| 392 | if(desirability>bestscore) |
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| 393 | { |
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| 394 | bestscore = desirability; |
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| 395 | bestmode = mode; |
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| 396 | } |
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| 397 | } |
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| 398 | *depthFormat = depthFormats[props.modes[bestmode].depth]; |
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| 399 | *stencilFormat = stencilFormats[props.modes[bestmode].stencil]; |
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| 400 | } |
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| 401 | |
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| 402 | GLFBORenderTexture *GLFBOManager::createRenderTexture(const String &name, const GLSurfaceDesc &target) |
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| 403 | { |
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| 404 | GLFBORenderTexture *retval = new GLFBORenderTexture(this, name, target); |
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| 405 | return retval; |
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| 406 | } |
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| 407 | MultiRenderTarget *GLFBOManager::createMultiRenderTarget(const String & name) |
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| 408 | { |
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| 409 | return new GLFBOMultiRenderTarget(this, name); |
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| 410 | } |
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| 411 | |
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| 412 | GLFrameBufferObject *GLFBOManager::createFrameBufferObject() |
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| 413 | { |
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| 414 | return new GLFrameBufferObject(this); |
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| 415 | } |
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| 416 | |
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| 417 | void GLFBOManager::destroyFrameBufferObject(GLFrameBufferObject * x) |
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| 418 | { |
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| 419 | delete x; |
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| 420 | } |
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| 421 | void GLFBOManager::bind(RenderTarget *target) |
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| 422 | { |
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| 423 | /// Check if the render target is in the rendertarget->FBO map |
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| 424 | GLFrameBufferObject *fbo = 0; |
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| 425 | target->getCustomAttribute("FBO", &fbo); |
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| 426 | if(fbo) |
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| 427 | fbo->bind(); |
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| 428 | else |
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| 429 | // Old style context (window/pbuffer) or copying render texture |
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| 430 | glBindFramebufferEXT(GL_FRAMEBUFFER_EXT, 0); |
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| 431 | } |
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| 432 | |
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| 433 | GLSurfaceDesc GLFBOManager::requestRenderBuffer(GLenum format, size_t width, size_t height) |
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| 434 | { |
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| 435 | GLSurfaceDesc retval; |
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| 436 | retval.buffer = 0; // Return 0 buffer if GL_NONE is requested |
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| 437 | if(format != GL_NONE) |
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| 438 | { |
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| 439 | RBFormat key(format, width, height); |
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| 440 | RenderBufferMap::iterator it = mRenderBufferMap.find(key); |
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| 441 | if(it != mRenderBufferMap.end()) |
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| 442 | { |
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| 443 | retval.buffer = it->second.buffer; |
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| 444 | retval.zoffset = 0; |
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| 445 | // Increase refcount |
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| 446 | ++it->second.refcount; |
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| 447 | } |
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| 448 | else |
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| 449 | { |
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| 450 | // New one |
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| 451 | GLRenderBuffer *rb = new GLRenderBuffer(format, width, height); |
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| 452 | mRenderBufferMap[key] = RBRef(rb); |
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| 453 | retval.buffer = rb; |
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| 454 | retval.zoffset = 0; |
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| 455 | } |
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| 456 | } |
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| 457 | //std::cerr << "Requested renderbuffer with format " << std::hex << format << std::dec << " of " << width << "x" << height << " :" << retval.buffer << std::endl; |
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| 458 | return retval; |
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| 459 | } |
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| 460 | //----------------------------------------------------------------------- |
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| 461 | void GLFBOManager::requestRenderBuffer(const GLSurfaceDesc &surface) |
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| 462 | { |
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| 463 | if(surface.buffer == 0) |
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| 464 | return; |
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| 465 | RBFormat key(surface.buffer->getGLFormat(), surface.buffer->getWidth(), surface.buffer->getHeight()); |
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| 466 | RenderBufferMap::iterator it = mRenderBufferMap.find(key); |
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| 467 | assert(it != mRenderBufferMap.end()); |
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| 468 | if (it != mRenderBufferMap.end()) // Just in case |
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| 469 | { |
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| 470 | assert(it->second.buffer == surface.buffer); |
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| 471 | // Increase refcount |
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| 472 | ++it->second.refcount; |
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| 473 | } |
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| 474 | } |
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| 475 | //----------------------------------------------------------------------- |
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| 476 | void GLFBOManager::releaseRenderBuffer(const GLSurfaceDesc &surface) |
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| 477 | { |
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| 478 | if(surface.buffer == 0) |
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| 479 | return; |
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| 480 | RBFormat key(surface.buffer->getGLFormat(), surface.buffer->getWidth(), surface.buffer->getHeight()); |
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| 481 | RenderBufferMap::iterator it = mRenderBufferMap.find(key); |
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| 482 | if(it != mRenderBufferMap.end()) |
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| 483 | { |
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| 484 | // Decrease refcount |
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| 485 | --it->second.refcount; |
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| 486 | if(it->second.refcount==0) |
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| 487 | { |
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| 488 | // If refcount reaches zero, delete buffer and remove from map |
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| 489 | delete it->second.buffer; |
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| 490 | mRenderBufferMap.erase(it); |
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| 491 | //std::cerr << "Destroyed renderbuffer of format " << std::hex << key.format << std::dec |
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| 492 | // << " of " << key.width << "x" << key.height << std::endl; |
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| 493 | } |
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| 494 | } |
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| 495 | } |
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| 496 | } |
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