779 lines
32 KiB
C++
779 lines
32 KiB
C++
/* -*-c++-*- OpenSceneGraph - Copyright (C) 1998-2006 Robert Osfield
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*
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* This library is open source and may be redistributed and/or modified under
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* the terms of the OpenSceneGraph Public License (OSGPL) version 0.0 or
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* (at your option) any later version. The full license is in LICENSE file
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* included with this distribution, and on the openscenegraph.org website.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* OpenSceneGraph Public License for more details.
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*/
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#ifndef OSG_TEXTURE
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#define OSG_TEXTURE 1
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#include <osg/GL>
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#include <osg/Image>
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#include <osg/StateAttribute>
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#include <osg/GraphicsContext>
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#include <osg/ref_ptr>
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#include <osg/Vec4>
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#include <osg/buffered_value>
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#include <list>
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#include <map>
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// If not defined by gl.h use the definition found in:
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// http://oss.sgi.com/projects/ogl-sample/registry/EXT/texture_filter_anisotropic.txt
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#ifndef GL_TEXTURE_MAX_ANISOTROPY_EXT
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#define GL_TEXTURE_MAX_ANISOTROPY_EXT 0x84FE
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#endif
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#ifndef GL_ARB_texture_compression
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#define GL_COMPRESSED_ALPHA_ARB 0x84E9
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#define GL_COMPRESSED_LUMINANCE_ARB 0x84EA
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#define GL_COMPRESSED_LUMINANCE_ALPHA_ARB 0x84EB
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#define GL_COMPRESSED_INTENSITY_ARB 0x84EC
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#define GL_COMPRESSED_RGB_ARB 0x84ED
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#define GL_COMPRESSED_RGBA_ARB 0x84EE
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#define GL_TEXTURE_COMPRESSION_HINT_ARB 0x84EF
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#define GL_TEXTURE_COMPRESSED_ARB 0x86A1
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#define GL_NUM_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A2
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#define GL_COMPRESSED_TEXTURE_FORMATS_ARB 0x86A3
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#endif
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#ifndef GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB
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#define GL_TEXTURE_COMPRESSED_IMAGE_SIZE_ARB 0x86A0
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#endif
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#ifndef GL_EXT_texture_compression_s3tc
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#define GL_COMPRESSED_RGB_S3TC_DXT1_EXT 0x83F0
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#define GL_COMPRESSED_RGBA_S3TC_DXT1_EXT 0x83F1
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#define GL_COMPRESSED_RGBA_S3TC_DXT3_EXT 0x83F2
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#define GL_COMPRESSED_RGBA_S3TC_DXT5_EXT 0x83F3
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#endif
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#ifndef GL_ARB_INTERNAL_TEXTURE_FORMAT
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#define GL_RGBA32F_ARB 0x8814
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#define GL_RGB32F_ARB 0x8815
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#define GL_ALPHA32F_ARB 0x8816
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#define GL_INTENSITY32F_ARB 0x8817
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#define GL_LUMINANCE32F_ARB 0x8818
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#define GL_LUMINANCE_ALPHA32F_ARB 0x8819
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#define GL_RGBA16F_ARB 0x881A
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#define GL_RGB16F_ARB 0x881B
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#define GL_ALPHA16F_ARB 0x881C
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#define GL_INTENSITY16F_ARB 0x881D
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#define GL_LUMINANCE16F_ARB 0x881E
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#define GL_LUMINANCE_ALPHA16F_ARB 0x881F
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#endif
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#ifndef GL_ARB_PIXEL_DATA
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#define GL_HALF_FLOAT_ARB 0x140B
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#endif
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#ifndef GL_NV_texture_shader
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#define GL_HILO_NV 0x86F4
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#define GL_DSDT_NV 0x86F5
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#define GL_DSDT_MAG_NV 0x86F6
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#define GL_DSDT_MAG_VIB_NV 0x86F7
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#define GL_HILO16_NV 0x86F8
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#define GL_SIGNED_HILO_NV 0x86F9
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#define GL_SIGNED_HILO16_NV 0x86FA
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#define GL_SIGNED_RGBA_NV 0x86FB
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#define GL_SIGNED_RGBA8_NV 0x86FC
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#define GL_SIGNED_RGB_NV 0x86FE
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#define GL_SIGNED_RGB8_NV 0x86FF
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#define GL_SIGNED_LUMINANCE_NV 0x8701
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#define GL_SIGNED_LUMINANCE8_NV 0x8702
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#define GL_SIGNED_LUMINANCE_ALPHA_NV 0x8703
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#define GL_SIGNED_LUMINANCE8_ALPHA8_NV 0x8704
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#define GL_SIGNED_ALPHA_NV 0x8705
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#define GL_SIGNED_ALPHA8_NV 0x8706
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#define GL_SIGNED_INTENSITY_NV 0x8707
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#define GL_SIGNED_INTENSITY8_NV 0x8708
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#define GL_DSDT8_NV 0x8709
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#define GL_DSDT8_MAG8_NV 0x870A
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#define GL_DSDT8_MAG8_INTENSITY8_NV 0x870B
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#define GL_SIGNED_RGB_UNSIGNED_ALPHA_NV 0x870C
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#define GL_SIGNED_RGB8_UNSIGNED_ALPHA8_NV 0x870D
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#endif
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#ifndef GL_NV_float_buffer
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#define GL_FLOAT_R_NV 0x8880
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#define GL_FLOAT_RG_NV 0x8881
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#define GL_FLOAT_RGB_NV 0x8882
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#define GL_FLOAT_RGBA_NV 0x8883
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#define GL_FLOAT_R16_NV 0x8884
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#define GL_FLOAT_R32_NV 0x8885
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#define GL_FLOAT_RG16_NV 0x8886
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#define GL_FLOAT_RG32_NV 0x8887
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#define GL_FLOAT_RGB16_NV 0x8888
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#define GL_FLOAT_RGB32_NV 0x8889
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#define GL_FLOAT_RGBA16_NV 0x888A
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#define GL_FLOAT_RGBA32_NV 0x888B
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#endif
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#ifndef GL_NV_half_float
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#define GL_HALF_FLOAT_NV 0x140B
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#endif
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#ifndef GL_ATI_texture_float
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#define GL_RGBA_FLOAT32_ATI 0x8814
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#define GL_RGB_FLOAT32_ATI 0x8815
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#define GL_ALPHA_FLOAT32_ATI 0x8816
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#define GL_INTENSITY_FLOAT32_ATI 0x8817
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#define GL_LUMINANCE_FLOAT32_ATI 0x8818
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#define GL_LUMINANCE_ALPHA_FLOAT32_ATI 0x8819
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#define GL_RGBA_FLOAT16_ATI 0x881A
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#define GL_RGB_FLOAT16_ATI 0x881B
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#define GL_ALPHA_FLOAT16_ATI 0x881C
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#define GL_INTENSITY_FLOAT16_ATI 0x881D
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#define GL_LUMINANCE_FLOAT16_ATI 0x881E
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#define GL_LUMINANCE_ALPHA_FLOAT16_ATI 0x881F
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#endif
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#ifndef GL_MIRRORED_REPEAT_IBM
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#define GL_MIRRORED_REPEAT_IBM 0x8370
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#endif
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#ifndef GL_CLAMP_TO_EDGE
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#define GL_CLAMP_TO_EDGE 0x812F
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#endif
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#ifndef GL_CLAMP_TO_BORDER_ARB
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#define GL_CLAMP_TO_BORDER_ARB 0x812D
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#endif
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#ifndef GL_GENERATE_MIPMAP_SGIS
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#define GL_GENERATE_MIPMAP_SGIS 0x8191
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#define GL_GENERATE_MIPMAP_HINT_SGIS 0x8192
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#endif
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#ifndef GL_TEXTURE_3D
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#define GL_TEXTURE_3D 0x806F
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#endif
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#ifndef GL_TEXTURE_BINDING_3D
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#define GL_TEXTURE_BINDING_3D 0x806A
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#endif
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#ifndef GL_DEPTH_TEXTURE_MODE_ARB
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#define GL_DEPTH_TEXTURE_MODE_ARB 0x884B
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#endif
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#ifndef GL_TEXTURE_COMPARE_MODE_ARB
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#define GL_TEXTURE_COMPARE_MODE_ARB 0x884C
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#define GL_TEXTURE_COMPARE_FUNC_ARB 0x884D
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#define GL_COMPARE_R_TO_TEXTURE_ARB 0x884E
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#endif
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#ifndef TEXTURE_COMPARE_FAIL_VALUE_ARB
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#define TEXTURE_COMPARE_FAIL_VALUE_ARB 0x80BF
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#endif
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#if !defined( GL_MAX_TEXTURE_UNITS )
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#define GL_MAX_TEXTURE_UNITS 0x84E2
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#endif
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#ifndef GL_TEXTURE_DEPTH
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#define GL_TEXTURE_DEPTH 0x8071
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#endif
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namespace osg {
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/** Texture pure virtual base class that encapsulates OpenGl texture
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* functionality common to the various types of OSG textures.
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*/
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class OSG_EXPORT Texture : public osg::StateAttribute
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{
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public :
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static unsigned int s_numberTextureReusedLastInLastFrame;
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static unsigned int s_numberNewTextureInLastFrame;
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static unsigned int s_numberDeletedTextureInLastFrame;
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Texture();
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/** Copy constructor using CopyOp to manage deep vs shallow copy. */
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Texture(const Texture& text,const CopyOp& copyop=CopyOp::SHALLOW_COPY);
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virtual osg::Object* cloneType() const = 0;
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virtual osg::Object* clone(const CopyOp& copyop) const = 0;
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virtual bool isSameKindAs(const osg::Object* obj) const { return dynamic_cast<const Texture *>(obj)!=NULL; }
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virtual const char* libraryName() const { return "osg"; }
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virtual const char* className() const { return "Texture"; }
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virtual Type getType() const { return TEXTURE; }
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virtual bool isTextureAttribute() const { return true; }
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virtual GLenum getTextureTarget() const = 0;
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virtual bool getModeUsage(ModeUsage& usage) const
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{
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usage.usesTextureMode(getTextureTarget());
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return true;
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}
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virtual int getTextureWidth() const { return 0; }
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virtual int getTextureHeight() const { return 0; }
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virtual int getTextureDepth() const { return 0; }
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enum WrapParameter {
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WRAP_S,
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WRAP_T,
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WRAP_R
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};
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enum WrapMode {
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CLAMP = GL_CLAMP,
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CLAMP_TO_EDGE = GL_CLAMP_TO_EDGE,
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CLAMP_TO_BORDER = GL_CLAMP_TO_BORDER_ARB,
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REPEAT = GL_REPEAT,
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MIRROR = GL_MIRRORED_REPEAT_IBM
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};
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/** Sets the texture wrap mode. */
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void setWrap(WrapParameter which, WrapMode wrap);
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/** Gets the texture wrap mode. */
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WrapMode getWrap(WrapParameter which) const;
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/** Sets the border color. Only used when wrap mode is
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* CLAMP_TO_BORDER. */
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void setBorderColor(const Vec4& color) { _borderColor = color; dirtyTextureParameters(); }
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/** Gets the border color. */
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const Vec4& getBorderColor() const { return _borderColor; }
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/** Sets the border width. */
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void setBorderWidth(GLint width) { _borderWidth = width; dirtyTextureParameters(); }
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GLint getBorderWidth() const { return _borderWidth; }
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enum FilterParameter {
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MIN_FILTER,
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MAG_FILTER
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};
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enum FilterMode {
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LINEAR = GL_LINEAR,
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LINEAR_MIPMAP_LINEAR = GL_LINEAR_MIPMAP_LINEAR,
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LINEAR_MIPMAP_NEAREST = GL_LINEAR_MIPMAP_NEAREST,
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NEAREST = GL_NEAREST,
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NEAREST_MIPMAP_LINEAR = GL_NEAREST_MIPMAP_LINEAR,
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NEAREST_MIPMAP_NEAREST = GL_NEAREST_MIPMAP_NEAREST
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};
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/** Sets the texture filter mode. */
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void setFilter(FilterParameter which, FilterMode filter);
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/** Gets the texture filter mode. */
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FilterMode getFilter(FilterParameter which) const;
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/** Sets the maximum anisotropy value, default value is 1.0 for no
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* anisotropic filtering. If hardware does not support anisotropic
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* filtering, use normal filtering (equivilant to a max anisotropy
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* value of 1.0. Valid range is 1.0f upwards. The maximum value
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* depends on the graphics system. */
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void setMaxAnisotropy(float anis);
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/** Gets the maximum anisotropy value. */
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inline float getMaxAnisotropy() const { return _maxAnisotropy; }
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/** Sets the hardware mipmap generation hint. If enabled, it will
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* only be used if supported in the graphics system. */
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inline void setUseHardwareMipMapGeneration(bool useHardwareMipMapGeneration) { _useHardwareMipMapGeneration = useHardwareMipMapGeneration; }
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/** Gets the hardware mipmap generation hint. */
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inline bool getUseHardwareMipMapGeneration() const { return _useHardwareMipMapGeneration; }
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/** Sets whether or not the apply() function will unreference the image
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* data. If enabled, and the image data is only referened by this
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* Texture, apply() will delete the image data. */
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inline void setUnRefImageDataAfterApply(bool flag) { _unrefImageDataAfterApply = flag; }
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/** Gets whether or not apply() unreferences image data. */
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inline bool getUnRefImageDataAfterApply() const { return _unrefImageDataAfterApply; }
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/** Sets whether to use client storage for the texture, if supported
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* by the graphics system. Note: If enabled, and the graphics system
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* supports it, the osg::Image(s) associated with this texture cannot
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* be deleted, so the UnRefImageDataAfterApply flag would be ignored. */
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inline void setClientStorageHint(bool flag) { _clientStorageHint = flag; }
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/** Gets whether to use client storage for the texture. */
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inline bool getClientStorageHint() const { return _clientStorageHint; }
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/** Sets whether to force the texture to resize images that have dimensions
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* that are not a power of two. If enabled, NPOT images will be resized,
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* whether or not NPOT textures are supported by the hardware. If disabled,
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* NPOT images will not be resized if supported by hardware. */
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inline void setResizeNonPowerOfTwoHint(bool flag) { _resizeNonPowerOfTwoHint = flag; }
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/** Gets whether texture will force non power to two images to be resized. */
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inline bool getResizeNonPowerOfTwoHint() const { return _resizeNonPowerOfTwoHint; }
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enum InternalFormatMode {
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USE_IMAGE_DATA_FORMAT,
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USE_USER_DEFINED_FORMAT,
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USE_ARB_COMPRESSION,
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USE_S3TC_DXT1_COMPRESSION,
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USE_S3TC_DXT3_COMPRESSION,
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USE_S3TC_DXT5_COMPRESSION
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};
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/** Sets the internal texture format mode. Note: If the texture format is
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* USE_IMAGE_DATA_FORMAT, USE_ARB_COMPRESSION, or USE_S3TC_COMPRESSION,
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* the internal format mode is set automatically and will overwrite the
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* previous _internalFormat. */
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inline void setInternalFormatMode(InternalFormatMode mode) { _internalFormatMode = mode; }
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/** Gets the internal texture format mode. */
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inline InternalFormatMode getInternalFormatMode() const { return _internalFormatMode; }
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/** Sets the internal texture format. Implicitly sets the
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* internalFormatMode to USE_USER_DEFINED_FORMAT. */
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inline void setInternalFormat(GLint internalFormat)
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{
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_internalFormatMode = USE_USER_DEFINED_FORMAT;
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_internalFormat = internalFormat;
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}
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/** Gets the internal texture format. */
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inline GLint getInternalFormat() const { if (_internalFormat==0) computeInternalFormat(); return _internalFormat; }
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/** Return true if the internal format is one of the compressed formats.*/
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bool isCompressedInternalFormat() const;
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/** Sets the external source image format, used as a fallback when no osg::Image is attached to provide the source image format. */
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inline void setSourceFormat(GLenum sourceFormat) { _sourceFormat = sourceFormat; }
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/** Gets the external source image format. */
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inline GLenum getSourceFormat() const { return _sourceFormat; }
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/** Sets the external source data type, used as a fallback when no osg::Image is attached to provide the source image format.*/
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inline void setSourceType(GLenum sourceType) { _sourceType = sourceType; }
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/** Gets the external source data type.*/
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inline GLenum getSourceType() const { return _sourceType; }
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class TextureObject;
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/** Returns a pointer to the texture object for the current context. */
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inline TextureObject* getTextureObject(unsigned int contextID) const
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{
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return _textureObjectBuffer[contextID].get();
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}
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/** Forces a recompile on next apply() of associated OpenGL texture
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* objects. */
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void dirtyTextureObject();
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/** Returns true if the texture objects for all the required graphics
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* contexts are loaded. */
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bool areAllTextureObjectsLoaded() const;
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/** Gets the dirty flag for the current contextID. */
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inline unsigned int& getTextureParameterDirty(unsigned int contextID) const
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{
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return _texParametersDirtyList[contextID];
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}
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/** Force a reset on next apply() of associated OpenGL texture
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* parameters. */
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void dirtyTextureParameters();
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/** Sets GL_TEXTURE_COMPARE_MODE_ARB to GL_COMPARE_R_TO_TEXTURE_ARB
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* See http://oss.sgi.com/projects/ogl-sample/registry/ARB/shadow.txt. */
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void setShadowComparison(bool flag) { _use_shadow_comparison = flag; }
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enum ShadowCompareFunc {
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LEQUAL = GL_LEQUAL,
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GEQUAL = GL_GEQUAL
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};
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/** Sets shadow texture comparison function. */
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void setShadowCompareFunc(ShadowCompareFunc func) { _shadow_compare_func = func; }
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ShadowCompareFunc getShadowCompareFunc() const { return _shadow_compare_func; }
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enum ShadowTextureMode {
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LUMINANCE = GL_LUMINANCE,
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INTENSITY = GL_INTENSITY,
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ALPHA = GL_ALPHA
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};
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/** Sets shadow texture mode after comparison. */
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void setShadowTextureMode(ShadowTextureMode mode) { _shadow_texture_mode = mode; }
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ShadowTextureMode getShadowTextureMode() const { return _shadow_texture_mode; }
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/** Sets the TEXTURE_COMPARE_FAIL_VALUE_ARB texture parameter. See
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* http://oss.sgi.com/projects/ogl-sample/registry/ARB/shadow_ambient.txt. */
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void setShadowAmbient(float shadow_ambient) { _shadow_ambient = shadow_ambient; }
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float getShadowAmbient() const { return _shadow_ambient; }
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/** Sets the texture image for the specified face. */
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virtual void setImage(unsigned int face, Image* image) = 0;
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/** Gets the texture image for the specified face. */
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virtual Image* getImage(unsigned int face) = 0;
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/** Gets the const texture image for specified face. */
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virtual const Image* getImage(unsigned int face) const = 0;
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/** Gets the number of images that can be assigned to this Texture. */
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virtual unsigned int getNumImages() const = 0;
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/** Set the PBuffer graphis context to read from when using PBuffers for RenderToTexture.*/
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void setReadPBuffer(GraphicsContext* context) { _readPBuffer = context; }
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/** Get the PBuffer graphis context to read from when using PBuffers for RenderToTexture.*/
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GraphicsContext* getReadPBuffer() { return _readPBuffer.get(); }
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/** Get the const PBuffer graphis context to read from when using PBuffers for RenderToTexture.*/
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const GraphicsContext* getReadPBuffer() const { return _readPBuffer.get(); }
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/** Texture is a pure virtual base class, apply must be overriden. */
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virtual void apply(State& state) const = 0;
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/** Calls apply(state) to compile the texture. */
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virtual void compileGLObjects(State& state) const;
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/** Resize any per context GLObject buffers to specified size. */
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virtual void resizeGLObjectBuffers(unsigned int maxSize);
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/** If State is non-zero, this function releases OpenGL objects for
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* the specified graphics context. Otherwise, releases OpenGL objexts
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* for all graphics contexts. */
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|
virtual void releaseGLObjects(State* state=0) const;
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|
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/** Encapsulates queries of extension availability, obtains extension
|
|
* function pointers, and provides convinience wrappers for
|
|
* calling extension functions. */
|
|
class OSG_EXPORT Extensions : public osg::Referenced
|
|
{
|
|
public:
|
|
Extensions(unsigned int contextID);
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|
|
|
Extensions(const Extensions& rhs);
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|
|
|
void lowestCommonDenominator(const Extensions& rhs);
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|
|
|
void setupGLExtensions(unsigned int contextID);
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|
|
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void setMultiTexturingSupported(bool flag) { _isMultiTexturingSupported=flag; }
|
|
bool isMultiTexturingSupported() const { return _isMultiTexturingSupported; }
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|
|
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void setTextureFilterAnisotropicSupported(bool flag) { _isTextureFilterAnisotropicSupported=flag; }
|
|
bool isTextureFilterAnisotropicSupported() const { return _isTextureFilterAnisotropicSupported; }
|
|
|
|
void setTextureCompressionARBSupported(bool flag) { _isTextureCompressionARBSupported=flag; }
|
|
bool isTextureCompressionARBSupported() const { return _isTextureCompressionARBSupported; }
|
|
|
|
void setTextureCompressionS3TCSupported(bool flag) { _isTextureCompressionS3TCSupported=flag; }
|
|
bool isTextureCompressionS3TCSupported() const { return _isTextureCompressionS3TCSupported; }
|
|
|
|
void setTextureMirroredRepeatSupported(bool flag) { _isTextureMirroredRepeatSupported=flag; }
|
|
bool isTextureMirroredRepeatSupported() const { return _isTextureMirroredRepeatSupported; }
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|
|
|
void setTextureEdgeClampSupported(bool flag) { _isTextureEdgeClampSupported=flag; }
|
|
bool isTextureEdgeClampSupported() const { return _isTextureEdgeClampSupported; }
|
|
|
|
void setTextureBorderClampSupported(bool flag) { _isTextureBorderClampSupported=flag; }
|
|
bool isTextureBorderClampSupported() const { return _isTextureBorderClampSupported; }
|
|
|
|
void setGenerateMipMapSupported(bool flag) { _isGenerateMipMapSupported=flag; }
|
|
bool isGenerateMipMapSupported() const { return _isGenerateMipMapSupported; }
|
|
|
|
void setShadowSupported(bool flag) { _isShadowSupported = flag; }
|
|
bool isShadowSupported() const { return _isShadowSupported; }
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|
|
|
void setShadowAmbientSupported(bool flag) { _isShadowAmbientSupported = flag; }
|
|
bool isShadowAmbientSupported() const { return _isShadowAmbientSupported; }
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|
|
|
void setMaxTextureSize(GLint maxsize) { _maxTextureSize=maxsize; }
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|
GLint maxTextureSize() const { return _maxTextureSize; }
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void setNumTextureUnits(GLint nunits ) { _numTextureUnits=nunits; }
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|
GLint numTextureUnits() const { return _numTextureUnits; }
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|
|
|
bool isCompressedTexImage2DSupported() const { return _glCompressedTexImage2D!=0; }
|
|
|
|
void setCompressedTexImage2DProc(void* ptr) { _glCompressedTexImage2D = ptr; }
|
|
void glCompressedTexImage2D(GLenum target, GLint level, GLenum internalformat, GLsizei width, GLsizei height, GLint border, GLsizei imageSize, const GLvoid *data) const;
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|
|
|
void setCompressedTexSubImage2DProc(void* ptr) { _glCompressedTexSubImage2D = ptr; }
|
|
void glCompressedTexSubImage2D(GLenum target, GLint level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLsizei type, const GLvoid *data) const;
|
|
|
|
void setGetCompressedTexImageProc(void* ptr) { _glGetCompressedTexImage = ptr; }
|
|
void glGetCompressedTexImage(GLenum target, GLint level, GLvoid *data) const;
|
|
|
|
bool isClientStorageSupported() const { return _isClientStorageSupported; }
|
|
|
|
bool isNonPowerOfTwoTextureSupported(GLenum filter) const
|
|
{
|
|
return (filter==GL_LINEAR || filter==GL_NEAREST) ?
|
|
_isNonPowerOfTwoTextureNonMipMappedSupported :
|
|
_isNonPowerOfTwoTextureMipMappedSupported;
|
|
}
|
|
|
|
protected:
|
|
|
|
~Extensions() {}
|
|
|
|
bool _isMultiTexturingSupported;
|
|
bool _isTextureFilterAnisotropicSupported;
|
|
bool _isTextureCompressionARBSupported;
|
|
bool _isTextureCompressionS3TCSupported;
|
|
bool _isTextureMirroredRepeatSupported;
|
|
bool _isTextureEdgeClampSupported;
|
|
bool _isTextureBorderClampSupported;
|
|
bool _isGenerateMipMapSupported;
|
|
bool _isShadowSupported;
|
|
bool _isShadowAmbientSupported;
|
|
bool _isClientStorageSupported;
|
|
bool _isNonPowerOfTwoTextureMipMappedSupported;
|
|
bool _isNonPowerOfTwoTextureNonMipMappedSupported;
|
|
|
|
GLint _maxTextureSize;
|
|
GLint _numTextureUnits;
|
|
|
|
void* _glCompressedTexImage2D;
|
|
void* _glCompressedTexSubImage2D;
|
|
void* _glGetCompressedTexImage;
|
|
|
|
};
|
|
|
|
/** Gets the extension for the specified context. Creates the
|
|
* Extensions object for that context if it doesn't exist.
|
|
* Returns NULL if the Extensions object for the context doesn't
|
|
* exist and the createIfNotInitalized flag is false. */
|
|
static Extensions* getExtensions(unsigned int contextID,bool createIfNotInitalized);
|
|
|
|
/** Overrides Extensions objects across graphics contexts. Typically
|
|
* used to ensure the same lowest common denominator of extensions
|
|
* on sustems with different graphics pipes. */
|
|
static void setExtensions(unsigned int contextID,Extensions* extensions);
|
|
|
|
/** Determine whether the given internalFormat is a compressed
|
|
* image format. */
|
|
static bool isCompressedInternalFormat(GLint internalFormat);
|
|
|
|
/** Determine the size of a compressed image, given the internalFormat,
|
|
* the width, the height, and the depth of the image. The block size
|
|
* and the size are output parameters. */
|
|
static void getCompressedSize(GLenum internalFormat, GLint width, GLint height, GLint depth, GLint& blockSize, GLint& size);
|
|
|
|
|
|
/** Helper method. Creates the texture, but doesn't set or use a
|
|
* texture binding. Note: Don't call this method directly unless
|
|
* you're implementing a subload callback. */
|
|
void applyTexImage2D_load(State& state, GLenum target, const Image* image, GLsizei width, GLsizei height,GLsizei numMipmapLevels) const;
|
|
|
|
/** Helper method. Subloads images into the texture, but doesn't set
|
|
* or use a texture binding. Note: Don't call this method directly
|
|
* unless you're implementing a subload callback. */
|
|
void applyTexImage2D_subload(State& state, GLenum target, const Image* image, GLsizei width, GLsizei height, GLint inInternalFormat, GLsizei numMipmapLevels) const;
|
|
|
|
protected :
|
|
|
|
virtual ~Texture();
|
|
|
|
virtual void computeInternalFormat() const = 0;
|
|
|
|
void computeInternalFormatWithImage(const osg::Image& image) const;
|
|
|
|
void computeRequiredTextureDimensions(State& state, const osg::Image& image,GLsizei& width, GLsizei& height,GLsizei& numMipmapLevels) const;
|
|
|
|
/** Helper method. Sets texture paramters. */
|
|
void applyTexParameters(GLenum target, State& state) const;
|
|
|
|
|
|
|
|
/** Returns -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
|
|
int compareTexture(const Texture& rhs) const;
|
|
|
|
/** Returns -1 if *this < *rhs, 0 if *this==*rhs, 1 if *this>*rhs. */
|
|
int compareTextureObjects(const Texture& rhs) const;
|
|
|
|
typedef buffered_value<unsigned int> TexParameterDirtyList;
|
|
mutable TexParameterDirtyList _texParametersDirtyList;
|
|
|
|
WrapMode _wrap_s;
|
|
WrapMode _wrap_t;
|
|
WrapMode _wrap_r;
|
|
|
|
FilterMode _min_filter;
|
|
FilterMode _mag_filter;
|
|
float _maxAnisotropy;
|
|
bool _useHardwareMipMapGeneration;
|
|
bool _unrefImageDataAfterApply;
|
|
bool _clientStorageHint;
|
|
bool _resizeNonPowerOfTwoHint;
|
|
|
|
Vec4 _borderColor;
|
|
GLint _borderWidth;
|
|
|
|
InternalFormatMode _internalFormatMode;
|
|
mutable GLint _internalFormat;
|
|
mutable GLenum _sourceFormat;
|
|
mutable GLenum _sourceType;
|
|
|
|
bool _use_shadow_comparison;
|
|
ShadowCompareFunc _shadow_compare_func;
|
|
ShadowTextureMode _shadow_texture_mode;
|
|
float _shadow_ambient;
|
|
|
|
|
|
public:
|
|
|
|
class TextureObject : public osg::Referenced
|
|
{
|
|
public:
|
|
|
|
inline TextureObject(GLuint id,GLenum target):
|
|
_id(id),
|
|
_target(target),
|
|
_numMipmapLevels(0),
|
|
_internalFormat(0),
|
|
_width(0),
|
|
_height(0),
|
|
_depth(0),
|
|
_border(0),
|
|
_allocated(false),
|
|
_timeStamp(0) {}
|
|
|
|
inline TextureObject(GLuint id,
|
|
GLenum target,
|
|
GLint numMipmapLevels,
|
|
GLenum internalFormat,
|
|
GLsizei width,
|
|
GLsizei height,
|
|
GLsizei depth,
|
|
GLint border):
|
|
_id(id),
|
|
_target(target),
|
|
_numMipmapLevels(numMipmapLevels),
|
|
_internalFormat(internalFormat),
|
|
_width(width),
|
|
_height(height),
|
|
_depth(depth),
|
|
_border(border),
|
|
_allocated(false),
|
|
_timeStamp(0) {}
|
|
|
|
inline bool match(GLenum target,
|
|
GLint numMipmapLevels,
|
|
GLenum internalFormat,
|
|
GLsizei width,
|
|
GLsizei height,
|
|
GLsizei depth,
|
|
GLint border)
|
|
{
|
|
return isReusable() &&
|
|
(_target == target) &&
|
|
(_numMipmapLevels == numMipmapLevels) &&
|
|
(_internalFormat == internalFormat) &&
|
|
(_width == width) &&
|
|
(_height == height) &&
|
|
(_depth == depth) &&
|
|
(_border == border);
|
|
}
|
|
|
|
|
|
inline void bind()
|
|
{
|
|
glBindTexture( _target, _id);
|
|
}
|
|
|
|
|
|
inline void setAllocated(bool allocated=true) { _allocated = allocated; }
|
|
|
|
inline void setAllocated(GLint numMipmapLevels,
|
|
GLenum internalFormat,
|
|
GLsizei width,
|
|
GLsizei height,
|
|
GLsizei depth,
|
|
GLint border)
|
|
{
|
|
_allocated=true;
|
|
_numMipmapLevels = numMipmapLevels;
|
|
_internalFormat = internalFormat;
|
|
_width = width;
|
|
_height = height;
|
|
_depth = depth;
|
|
_border = border;
|
|
}
|
|
|
|
inline bool isAllocated() const { return _allocated; }
|
|
|
|
inline bool isReusable() const { return _allocated && _width!=0; }
|
|
|
|
GLuint _id;
|
|
GLenum _target;
|
|
GLint _numMipmapLevels;
|
|
GLenum _internalFormat;
|
|
GLsizei _width;
|
|
GLsizei _height;
|
|
GLsizei _depth;
|
|
GLint _border;
|
|
|
|
bool _allocated;
|
|
double _timeStamp;
|
|
};
|
|
|
|
typedef std::list< ref_ptr<TextureObject> > TextureObjectList;
|
|
typedef osg::buffered_object<TextureObjectList> TextureObjectListMap;
|
|
|
|
/** Takes the active texture objects from the Texture and places them
|
|
* in the specified TextureObjectListMap. */
|
|
void takeTextureObjects(TextureObjectListMap& toblm);
|
|
|
|
|
|
static TextureObject* generateTextureObject(unsigned int contextID,GLenum target);
|
|
|
|
static TextureObject* generateTextureObject(unsigned int contextID,
|
|
GLenum target,
|
|
GLint numMipmapLevels,
|
|
GLenum internalFormat,
|
|
GLsizei width,
|
|
GLsizei height,
|
|
GLsizei depth,
|
|
GLint border);
|
|
|
|
|
|
/** Set the minimum number of texture objects to retain in the deleted display list cache. */
|
|
static void setMinimumNumberOfTextureObjectsToRetainInCache(unsigned int minimum);
|
|
|
|
/** Get the minimum number of display lists to retain in the deleted display list cache. */
|
|
static unsigned int getMinimumNumberOfTextureObjectsToRetainInCache();
|
|
|
|
static void flushAllDeletedTextureObjects(unsigned int contextID);
|
|
|
|
static void flushDeletedTextureObjects(unsigned int contextID,double currentTime, double& availableTime);
|
|
|
|
|
|
protected:
|
|
|
|
typedef buffered_object< ref_ptr<TextureObject> > TextureObjectBuffer;
|
|
mutable TextureObjectBuffer _textureObjectBuffer;
|
|
mutable ref_ptr<GraphicsContext> _readPBuffer;
|
|
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|