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22598ceb4f
sample the texture four, not sixteen, times if we turn on linear filtering and sample between the texels).
59 lines
2 KiB
C++
59 lines
2 KiB
C++
//
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// TextureCache.h
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// interface
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//
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// Created by Andrzej Kapolka on 8/6/13.
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// Copyright (c) 2013 High Fidelity, Inc. All rights reserved.
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//
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#ifndef __interface__TextureCache__
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#define __interface__TextureCache__
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#include <QObject>
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#include "InterfaceConfig.h"
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class QOpenGLFramebufferObject;
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/// Stored cached textures, including render-to-texture targets.
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class TextureCache : public QObject {
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public:
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TextureCache();
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~TextureCache();
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/// Returns the ID of the permutation/normal texture used for Perlin noise shader programs. This texture
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/// has two lines: the first, a set of random numbers in [0, 255] to be used as permutation offsets, and
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/// the second, a set of random unit vectors to be used as noise gradients.
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GLuint getPermutationNormalTextureID();
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/// Returns a pointer to the primary framebuffer object. This render target includes a depth component, and is
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/// used for scene rendering.
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QOpenGLFramebufferObject* getPrimaryFramebufferObject();
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/// Returns the ID of the primary framebuffer object's depth texture. This contains the Z buffer used in rendering.
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GLuint getPrimaryDepthTextureID();
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/// Returns a pointer to the secondary framebuffer object, used as an additional render target when performing full
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/// screen effects.
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QOpenGLFramebufferObject* getSecondaryFramebufferObject();
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/// Returns a pointer to the tertiary framebuffer object, used as an additional render target when performing full
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/// screen effects.
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QOpenGLFramebufferObject* getTertiaryFramebufferObject();
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virtual bool eventFilter(QObject* watched, QEvent* event);
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private:
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QOpenGLFramebufferObject* createFramebufferObject();
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GLuint _permutationNormalTextureID;
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QOpenGLFramebufferObject* _primaryFramebufferObject;
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GLuint _primaryDepthTextureID;
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QOpenGLFramebufferObject* _secondaryFramebufferObject;
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QOpenGLFramebufferObject* _tertiaryFramebufferObject;
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};
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#endif /* defined(__interface__TextureCache__) */
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