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106 lines
3.8 KiB
106 lines
3.8 KiB
/* |
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* Copyright 1993-2015 NVIDIA Corporation. All rights reserved. |
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* |
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* Please refer to the NVIDIA end user license agreement (EULA) associated |
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* with this source code for terms and conditions that govern your use of |
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* this software. Any use, reproduction, disclosure, or distribution of |
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* this software and related documentation outside the terms of the EULA |
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* is strictly prohibited. |
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* |
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*/ |
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/* |
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Copyright (c) 2005, |
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Aaron Lefohn (lefohn@cs.ucdavis.edu) |
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Adam Moerschell (atmoerschell@ucdavis.edu) |
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All rights reserved. |
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This software is licensed under the BSD open-source license. See |
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http://www.opensource.org/licenses/bsd-license.php for more detail. |
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************************************************************* |
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Redistribution and use in source and binary forms, with or |
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without modification, are permitted provided that the following |
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conditions are met: |
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Redistributions of source code must retain the above copyright notice, |
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this list of conditions and the following disclaimer. |
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Redistributions in binary form must reproduce the above copyright notice, |
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this list of conditions and the following disclaimer in the documentation |
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and/or other materials provided with the distribution. |
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Neither the name of the University of California, Davis nor the names of |
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the contributors may be used to endorse or promote products derived |
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from this software without specific prior written permission. |
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
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"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
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LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
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FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL |
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THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
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INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE |
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GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
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INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
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WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF |
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THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY |
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OF SUCH DAMAGE. |
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*/ |
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#ifndef UCDAVIS_RENDER_BUFFER_H |
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#define UCDAVIS_RENDER_BUFFER_H |
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#include "framebufferObject.h" |
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/*! |
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Renderbuffer Class. This class encapsulates the Renderbuffer OpenGL |
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object described in the FramebufferObject (FBO) OpenGL spec. |
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See the official spec at: |
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http://oss.sgi.com/projects/ogl-sample/registry/EXT/framebuffer_object.txt |
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for complete details. |
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A "Renderbuffer" is a chunk of GPU memory used by FramebufferObjects to |
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represent "traditional" framebuffer memory (depth, stencil, and color buffers). |
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By "traditional," we mean that the memory cannot be bound as a texture. |
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With respect to GPU shaders, Renderbuffer memory is "write-only." Framebuffer |
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operations such as alpha blending, depth test, alpha test, stencil test, etc. |
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read from this memory in post-fragment-shader (ROP) operations. |
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The most common use of Renderbuffers is to create depth and stencil buffers. |
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Note that as of 7/1/05, NVIDIA drivers to do not support stencil Renderbuffers. |
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Usage Notes: |
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1) "internalFormat" can be any of the following: |
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Valid OpenGL internal formats beginning with: |
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RGB, RGBA, DEPTH_COMPONENT |
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or a stencil buffer format (not currently supported |
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in NVIDIA drivers as of 7/1/05). |
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STENCIL_INDEX1_EXT |
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STENCIL_INDEX4_EXT |
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STENCIL_INDEX8_EXT |
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STENCIL_INDEX16_EXT |
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*/ |
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class Renderbuffer |
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{ |
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public: |
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/// Ctors/Dtors |
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Renderbuffer(); |
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Renderbuffer(GLenum internalFormat, int width, int height); |
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~Renderbuffer(); |
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void Bind(); |
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void Unbind(); |
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void Set(GLenum internalFormat, int width, int height); |
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GLuint GetId() const; |
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static GLint GetMaxSize(); |
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private: |
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GLuint m_bufId; |
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static GLuint _CreateBufferId(); |
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}; |
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#endif
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