OpenGL 4.1 (Compatibility Profile) - July 25, 2010

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Appendix G Version 3.1 OpenGL version 3.1, released on March 24, 2009, is the ninth revision since the original version 1.0. Unlike earlier versions of OpenGL, OpenGL 3.1 is not upward compatible with earlier versions. The commands and interfaces identified as deprecated in OpenGL 3.0 (see appendix F) have been removed from OpenGL 3.1 entirely, with the following exception: • Wide lines have not been removed, and calling LineWidth with values greater than 1.0 is not an error. Implementations may restore such removed features using the GL_ARB_- compatibility extension discussed in section G.2. Following are brief descriptions of changes and additions to OpenGL 3.1. G.1 New Features New features in OpenGL 3.1, including the extension or extensions if any on which they were based, include: • Support for OpenGL Shading Language 1.30 and 1.40. • Instanced rendering with a per-instance counter accessible to vertex shaders (GL_ARB_draw_instanced). • Data copying between buffer objects (GL_ARB_copy_buffer). • Primitive restart (GL_NV_primitive_restart). Because client enable/disable no longer exists in OpenGL 3.1, the PRIMITIVE_RESTART 574
G.2. DEPRECATION MODEL 575 state has become server state, unlike the NV extension where it is client state. As a result, the numeric values assigned to PRIMITIVE_RESTART and PRIMITIVE_RESTART_INDEX differ from the NV versions of those tokens. • At least 16 texture image units must be accessible to vertex shaders, in addition to the 16 already guaranteed to be accessible to fragment shaders. • Texture buffer objects (GL_ARB_texture_buffer_object). • Rectangular textures (GL_ARB_texture_rectangle). • Uniform buffer objects (GL_ARB_uniform_buffer_object). • Signed normalized texture component formats. G.2 Deprecation Model The features marked as deprecated in OpenGL 3.0 (see section E) have been removed from OpenGL 3.1 (with the exception of line widths greater than one, which are retained). As described by the deprecation model, features removed from OpenGL 3.0 have been moved into the new extension GL_ARB_compatibility. If an implementation chooses to provide this extension, it restores all features deprecated by OpenGL 3.0 and removed from OpenGL 3.1. This extension may only be provided in an OpenGL 3.1 or later context version. Because of the complexity of describing this extension relative to the OpenGL 3.1 core specification, it is not written up as a separate document, unlike other extensions in the extension registry. Instead, an alternate version of this specification document has been generated with the deprecated material still present, but marked in a distinct color. No additional features are deprecated in OpenGL 3.1. G.3 Change Log Changes in the specification update of May 28, 2009: • Update MAX_CLIP_DISTANCES from 6 to 8 in section 2.23 and table 6.57, to match GLSL (bug 4803). • Accept null pointers in CompressedTexImage* (section 3.9.5) and treat them the same as for the corresponding TexImage* commands (bug 4863). OpenGL 4.1 (Compatibility Profile) - July 25, 2010
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The OpenGL R○ Graphics System: A
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Contents 1 Introduction 1 1.1 Forma
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CONTENTS iii 2.15.2 Tessellation Pr
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CONTENTS v 3.14 Multisample Point F
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CONTENTS vii B Corollaries 548 C Co
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CONTENTS ix L.3.11 Vertex Blend . .
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CONTENTS xi L.3.91 Shader Precision
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LIST OF FIGURES xiii 3.11 Example o
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LIST OF TABLES xv 3.10 UNSIGNED_SHO
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LIST OF TABLES xvii 6.36 Renderbuff
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Chapter 1 Introduction This documen
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1.5. OUR VIEW 3 the CPU and the gra
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Chapter 2 OpenGL Operation 2.1 Open
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2.1. OPENGL FUNDAMENTALS 7 section
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2.1. OPENGL FUNDAMENTALS 9 Any repr
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2.1. OPENGL FUNDAMENTALS 11 2.1.2 F
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2.2. GL STATE 13 After conversion,
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2.4. BASIC GL OPERATION 15 Type Des
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2.4. BASIC GL OPERATION 17 Display
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2.6. BEGIN/END PARADIGM 19 Error De
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2.6. BEGIN/END PARADIGM 21 Vertex C
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2.6. BEGIN/END PARADIGM 23 first ve
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2.6. BEGIN/END PARADIGM 25 2 4 6 2
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2.6. BEGIN/END PARADIGM 27 Figure 2
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2.6. BEGIN/END PARADIGM 29 Primitiv
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2.7. VERTEX SPECIFICATION 31 to cha
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2.7. VERTEX SPECIFICATION 33 This c
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2.7. VERTEX SPECIFICATION 35 void C
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2.7. VERTEX SPECIFICATION 37 • si
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2.8. VERTEX ARRAYS 39 void VertexAt
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2.8. VERTEX ARRAYS 41 The index par
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2.8. VERTEX ARRAYS 43 void ArrayEle
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2.8. VERTEX ARRAYS 45 and Primitive
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2.8. VERTEX ARRAYS 47 not modified
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2.8. VERTEX ARRAYS 49 does not exis
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2.8. VERTEX ARRAYS 51 is a restrict
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2.8. VERTEX ARRAYS 53 The command v
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2.9. BUFFER OBJECTS 55 } } else Dis
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2.9. BUFFER OBJECTS 57 Name Type In
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2.9. BUFFER OBJECTS 59 Name Value B
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2.9. BUFFER OBJECTS 61 pointers, or
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2.9. BUFFER OBJECTS 63 void *MapBuf
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2.9. BUFFER OBJECTS 65 sizeiptr siz
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2.10. VERTEX ARRAY OBJECTS 67 ing t
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2.12. FIXED-FUNCTION VERTEX TRANSFO
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2.13. FIXED-FUNCTION VERTEX LIGHTIN
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2.14. VERTEX SHADERS 91 2.14 Vertex
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2.14. VERTEX SHADERS 93 the text st
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2.14. VERTEX SHADERS 95 compiled to
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2.14. VERTEX SHADERS 97 obtain more
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2.14. VERTEX SHADERS 99 if (program
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2.14. VERTEX SHADERS 101 where pipe
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2.14. VERTEX SHADERS 103 or outputs
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2.14. VERTEX SHADERS 105 in length
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2.14. VERTEX SHADERS 107 Data type
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2.14. VERTEX SHADERS 109 After a pr
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2.14. VERTEX SHADERS 111 uniform bl
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2.14. VERTEX SHADERS 113 void GetAc
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2.14. VERTEX SHADERS 115 successful
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2.14. VERTEX SHADERS 117 If one or
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2.14. VERTEX SHADERS 119 OpenGL Sha
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2.14. VERTEX SHADERS 121 of the uni
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2.14. VERTEX SHADERS 123 If any of
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2.14. VERTEX SHADERS 125 • Member
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2.14. VERTEX SHADERS 127 matrix is
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2.14. VERTEX SHADERS 129 limit on t
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2.14. VERTEX SHADERS 131 will load
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2.14. VERTEX SHADERS 133 able writt
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2.14. VERTEX SHADERS 135 • the to
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2.14. VERTEX SHADERS 137 Instead, t
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2.14. VERTEX SHADERS 139 • the te
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2.14. VERTEX SHADERS 141 • The sa
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2.14. VERTEX SHADERS 143 This error
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2.14. VERTEX SHADERS 145 variable.
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2.15. TESSELLATION 147 of the outpu
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2.15. TESSELLATION 149 Tessellation
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2.15. TESSELLATION 151 whose tessel
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2.15. TESSELLATION 153 called the s
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2.15. TESSELLATION 155 float *value
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2.15. TESSELLATION 157 Figure 2.14.
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2.15. TESSELLATION 159 control the
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2.15. TESSELLATION 161 to subsequen
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2.15. TESSELLATION 163 the provided
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2.15. TESSELLATION 165 • The vari
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2.16. GEOMETRY SHADERS 167 the valu
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2.16. GEOMETRY SHADERS 169 vertices
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2.16. GEOMETRY SHADERS 171 • Flat
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2.16. GEOMETRY SHADERS 173 • Stru
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2.16. GEOMETRY SHADERS 175 The buil
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2.17. COORDINATE TRANSFORMATIONS 17
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2.17. COORDINATE TRANSFORMATIONS 17
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2.18. ASYNCHRONOUS QUERIES 181 retu
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2.19. CONDITIONAL RENDERING 183 2.1
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2.20. TRANSFORM FEEDBACK 185 return
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2.20. TRANSFORM FEEDBACK 187 Transf
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2.20. TRANSFORM FEEDBACK 189 itive
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2.21. PRIMITIVE QUERIES 191 is gene
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2.22. FLATSHADING 193 Primitive typ
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2.23. PRIMITIVE CLIPPING 195 lie in
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2.24. FINAL COLOR PROCESSING 197 ar
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2.25. CURRENT RASTER POSITION 199 c
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2.25. CURRENT RASTER POSITION 201 i
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203 Fixed function or fragment shad
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3.3. ANTIALIASING 205 these b bits
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3.3. ANTIALIASING 207 have fixed sa
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3.4. POINTS 209 derived size = clam
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¡ ¡ ¡ ¡ ¡ ¡ 3.4. POINTS 211 5
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3.4. POINTS 213 All fragments produ
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3.5. LINE SEGMENTS 215 ported is eq
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3.5. LINE SEGMENTS 217 window-coord
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3.5. LINE SEGMENTS 219 width = 2 wi
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3.6. POLYGONS 221 is rasterized as
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3.6. POLYGONS 223 is disabled or th
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3.6. POLYGONS 225 If x w and y w ar
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3.6. POLYGONS 227 given polygon is
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3.7. PIXEL RECTANGLES 229 Parameter
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3.7. PIXEL RECTANGLES 231 Parameter
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3.7. PIXEL RECTANGLES 233 pack buff
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3.7. PIXEL RECTANGLES 235 defines a
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3.7. PIXEL RECTANGLES 237 R, G, B,
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3.7. PIXEL RECTANGLES 239 precisely
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3.7. PIXEL RECTANGLES 241 Histogram
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¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡
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3.7. PIXEL RECTANGLES 245 Format Na
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3.7. PIXEL RECTANGLES 247 ROW_LENGT
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3.7. PIXEL RECTANGLES 249 an unsign
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3.7. PIXEL RECTANGLES 251 UNSIGNED_
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3.7. PIXEL RECTANGLES 253 Format Fi
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3.7. PIXEL RECTANGLES 255 3.7.5 Ras
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3.7. PIXEL RECTANGLES 257 (either z
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3.7. PIXEL RECTANGLES 259 must have
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3.7. PIXEL RECTANGLES 261 Base Filt
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3.7. PIXEL RECTANGLES 263 and C c i
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3.7. PIXEL RECTANGLES 265 ALPHA_BIA
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3.8. BITMAPS 267 ignored.) If a par
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3.9. TEXTURING 269 Bitmap Multisamp
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3.9. TEXTURING 271 specifies the ac
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3.9. TEXTURING 273 returns TRUE if
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3.9. TEXTURING 275 MIRRORED_REPEAT
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3.9. TEXTURING 277 elements in one
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3.9. TEXTURING 279 to a specific co
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3.9. TEXTURING 281 A preliminary sh
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3.9. TEXTURING 283 Sized internal c
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3.9. TEXTURING 285 Sized Base D S I
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3.9. TEXTURING 287 level of detail
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3.9. TEXTURING 289 • UNPACK_SKIP_
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3.9. TEXTURING 291 1.0 5.0 4 3 t v
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3.9. TEXTURING 293 defines a one-di
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3.9. TEXTURING 295 generates the er
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3.9. TEXTURING 297 • xoffset or y
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3.9. TEXTURING 299 of TEXTURE_WIDTH
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3.9. TEXTURING 301 This guarantee a
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3.9. TEXTURING 303 3.9.7 Buffer Tex
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3.9. TEXTURING 305 Internal formats
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3.9. TEXTURING 307 Texture paramete
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3.9. TEXTURING 309 Major Axis Direc
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3.9. TEXTURING 311 If λ(x, y) is l
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3.9. TEXTURING 313 Coordinate Wrapp
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3.9. TEXTURING 315 i 0 = wrap(⌊u
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3.9. TEXTURING 317 Figure 3.11. An
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3.9. TEXTURING 319 The values of le
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3.9. TEXTURING 321 3.9.12 Texture M
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3.9. TEXTURING 323 means that a tex
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3.9. TEXTURING 325 pixel data are t
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3.9. TEXTURING 327 Texture Base Tex
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3.9. TEXTURING 329 COMBINE_RGB Text
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3.9. TEXTURING 331 The state requir
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3.9. TEXTURING 333 reference value.
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3.9. TEXTURING 335 C f CT 0 CT 1 TE
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3.11. FOG 337 void Fog{if}( enum pn
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3.12. FRAGMENT SHADERS 339 MAX_FRAG
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3.12. FRAGMENT SHADERS 341 The resu
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3.12. FRAGMENT SHADERS 343 geometry
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3.12. FRAGMENT SHADERS 345 range co
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3.13. ANTIALIASING APPLICATION 347
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Chapter 4 Per-Fragment Operations a
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4.1. PER-FRAGMENT OPERATIONS 351 Fr
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4.1. PER-FRAGMENT OPERATIONS 353 st
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4.1. PER-FRAGMENT OPERATIONS 355 ma
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4.1. PER-FRAGMENT OPERATIONS 357 a
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4.1. PER-FRAGMENT OPERATIONS 359 4.
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4.1. PER-FRAGMENT OPERATIONS 361 Bl
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4.1. PER-FRAGMENT OPERATIONS 363 vo
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4.1. PER-FRAGMENT OPERATIONS 365 Th
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4.1. PER-FRAGMENT OPERATIONS 367 co
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4.2. WHOLE FRAMEBUFFER OPERATIONS 3
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¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡
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4.3. DRAWING, READING, AND COPYING
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4.4. FRAMEBUFFER OBJECTS 393 If SAM
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4.4. FRAMEBUFFER OBJECTS 395 If a f
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4.4. FRAMEBUFFER OBJECTS 397 4.4.2
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4.4. FRAMEBUFFER OBJECTS 399 The co
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4.4. FRAMEBUFFER OBJECTS 401 error
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4.4. FRAMEBUFFER OBJECTS 403 void F
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4.4. FRAMEBUFFER OBJECTS 405 • Th
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4.4. FRAMEBUFFER OBJECTS 407 FRAMEB
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4.4. FRAMEBUFFER OBJECTS 409 • im
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4.4. FRAMEBUFFER OBJECTS 411 • At
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4.4. FRAMEBUFFER OBJECTS 413 4.4.5
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4.4. FRAMEBUFFER OBJECTS 415 Layer
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Chapter 5 Special Functions This ch
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5.1. EVALUATORS 419 Integers Reals
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5.1. EVALUATORS 421 The second way
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5.2. SELECTION 423 EvalCoord2(p *
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5.3. FEEDBACK 425 of each primitive
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5.4. TIMER QUERIES 427 Type coordin
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5.5. DISPLAY LISTS 429 started or s
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5.5. DISPLAY LISTS 431 provides an
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5.5. DISPLAY LISTS 433 Framebuffer
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5.7. SYNC OBJECTS AND FENCES 435 Pr
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5.7. SYNC OBJECTS AND FENCES 437 If
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5.8. HINTS 439 Target PERSPECTIVE_C
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6.1. QUERYING GL STATE 441 void Get
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6.1. QUERYING GL STATE 443 6.1.3 En
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6.1. QUERYING GL STATE 445 TEXTURE_
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6.1. QUERYING GL STATE 447 • form
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6.1. QUERYING GL STATE 449 6.1.5 Sa
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6.1. QUERYING GL STATE 451 format N
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6.1. QUERYING GL STATE 453 are used
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6.1. QUERYING GL STATE 455 the corr
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6.1. QUERYING GL STATE 457 target i
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6.1. QUERYING GL STATE 459 If sync
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6.1. QUERYING GL STATE 461 or size)
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6.1. QUERYING GL STATE 463 If pname
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6.1. QUERYING GL STATE 465 If pname
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6.1. QUERYING GL STATE 467 range[0]
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6.1. QUERYING GL STATE 469 return t
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6.1. QUERYING GL STATE 471 • If p
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6.1. QUERYING GL STATE 473 6.1.21 S
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6.2. STATE TABLES 475 Operations on
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6.2. STATE TABLES 477 when not usin
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6.2. STATE TABLES 479 Get value Typ
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Page 543 and 544: 6.2. STATE TABLES 523 Get value Typ
Page 549 and 550: 6.2. STATE TABLES 529 Get Command M
Page 551 and 552: 6.2. STATE TABLES 531 Get Command M
Page 563 and 564: A.2. MULTI-PASS ALGORITHMS 543 A.2
Page 565 and 566: A.4. TESSELLATION INVARIANCE 545 Ru
Page 567 and 568: A.5. WHAT ALL THIS MEANS 547 Rule 7
Page 569 and 570: 549 stencil comparison function; it
Page 571 and 572: Appendix C Compressed Texture Image
Page 573 and 574: C.1. RGTC COMPRESSED TEXTURE IMAGE
Page 575 and 576: Appendix D Shared Objects and Multi
Page 577 and 578: D.2. SYNC OBJECTS AND MULTIPLE CONT
Page 579 and 580: D.3. PROPAGATING CHANGES TO OBJECTS
Page 581 and 582: E.1. CORE AND COMPATIBILITY PROFILE
Page 583 and 584: E.2. DEPRECATED AND REMOVED FEATURE
Page 585 and 586: E.2. DEPRECATED AND REMOVED FEATURE
Page 587 and 588: Appendix F Version 3.0 and Before O
Page 589 and 590: F.3. CHANGED TOKENS 569 New Token N
Page 591 and 592: F.5. CREDITS AND ACKNOWLEDGEMENTS 5
Page 593: F.5. CREDITS AND ACKNOWLEDGEMENTS 5
Page 597 and 598: G.4. CREDITS AND ACKNOWLEDGEMENTS 5
Page 599 and 600: Appendix H Version 3.2 OpenGL versi
Page 601 and 602: H.4. CHANGE LOG 581 New Token Name
Page 603 and 604: H.5. CREDITS AND ACKNOWLEDGEMENTS 5
Page 605 and 606: H.5. CREDITS AND ACKNOWLEDGEMENTS 5
Page 607 and 608: I.2. DEPRECATION MODEL 587 ing fact
Page 609 and 610: I.4. CREDITS AND ACKNOWLEDGEMENTS 5
Page 611 and 612: J.1. NEW FEATURES 591 • Mechanism
Page 613 and 614: J.4. CREDITS AND ACKNOWLEDGEMENTS 5
Page 615 and 616: Appendix K Version 4.1 OpenGL versi
Page 617 and 618: K.5. CREDITS AND ACKNOWLEDGEMENTS 5
Page 619 and 620: Appendix L Extension Registry, Head
Page 621 and 622: L.3. ARB EXTENSIONS 601 L.3.2 be am
Page 623 and 624: L.3. ARB EXTENSIONS 603 L.3.13 Text
Page 625 and 626: L.3. ARB EXTENSIONS 605 L.3.28 Open
Page 627 and 628: L.3. ARB EXTENSIONS 607 The name st
Page 629 and 630: L.3. ARB EXTENSIONS 609 equivalent
Page 631 and 632: L.3. ARB EXTENSIONS 611 L.3.59 Seam
Page 633 and 634: L.3. ARB EXTENSIONS 613 The name st
Page 635 and 636: L.3. ARB EXTENSIONS 615 L.3.84 Tess
Page 637 and 638: L.3. ARB EXTENSIONS 617 L.3.97 Cont
Page 639 and 640: INDEX 619 519 ACTIVE UNIFORM BLOCKS
Page 641 and 642: INDEX 621 CallList, 31, 430, 431, 5
Page 643 and 644: INDEX 623 RGTC2, 280, 285, 554 COMP
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INDEX 625 DEPTH FUNC, 500 DEPTH RAN
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INDEX 627 EvalCoord1f, 421 EvalCoor
Page 649 and 650:
INDEX 629 FramebufferRenderbuffer,
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INDEX 631 GetQueryObjectiv, 457, 52
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INDEX 633 GL ARB texture cube map a
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INDEX 635 HISTOGRAM ALPHA SIZE, 453
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INDEX 637 layout, 126 LEFT, 360, 37
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INDEX 639 MAX CLIP DISTANCES, 528,
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INDEX 641 MAX TRANSFORM FEEDBACK -
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INDEX 643 PACK IMAGE HEIGHT, 382, 4
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INDEX 645 101, 143, 464 PROGRAM BIN
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INDEX 647 189, 190 RETURN, 379 RG,
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INDEX 649 SECONDARY COLOR ARRAY - P
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INDEX 651 TESS GEN VERTEX ORDER, 46
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INDEX 653 TEXTURE CUBE MAP POS- ITI
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INDEX 655 Uniform*i{v}, 121, 122 Un
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INDEX 657 UNSIGNED SHORT 5 6 5 REV,
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