OpenGL 4.2 (Compatibility Profile) - April 27, 2012

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2.14. VERTEX SHADERS 96 compiled together be specified to LinkProgram. Not specifying an optimized pair may cause LinkProgram to fail. 2.14.3 Program Objects The shader objects that are to be used by the programmable stages of the GL are collected together to form a program object. The programs that are executed by these programmable stages are called executables. All information necessary for defining an executable is encapsulated in a program object. A program object is created with the command uint CreateProgram( void ); Program objects are empty when they are created. A non-zero name that can be used to reference the program object is returned. If an error occurs, zero will be returned. To attach a shader object to a program object, use the command void AttachShader( uint program, uint shader ); The error INVALID_OPERATION is generated if shader is already attached to program. Shader objects may be attached to program objects before source code has been loaded into the shader object, or before the shader object has been compiled. Multiple shader objects of the same type may be attached to a single program object, and a single shader object may be attached to more than one program object. To detach a shader object from a program object, use the command void DetachShader( uint program, uint shader ); The error INVALID_OPERATION is generated if shader is not attached to program. If shader has been flagged for deletion and is not attached to any other program object, it is deleted. In order to use the shader objects contained in a program object, the program object must be linked. The command void LinkProgram( uint program ); will link the program object named program. Each program object has a boolean status, LINK_STATUS, that is modified as a result of linking. This status can be queried with GetProgramiv (see section 6.1.18). This status will be set to TRUE if a valid executable is created, and FALSE otherwise. Linking can fail for a variety of reasons as specified in the OpenGL Shading Language Specification, as well as any of the following reasons: OpenGL 4.2 (Compatibility Profile) - April 27, 2012
2.14. VERTEX SHADERS 97 • One or more of the shader objects attached to program are not compiled successfully. • More active uniform or active sampler variables are used in program than allowed (see sections 2.14.7, 2.14.9, and 2.16.3). • The program object contains objects to form a tessellation control shader (see section 2.15.1), and – the program is not separable and contains no objects to form a vertex shader; – the output patch vertex count is not specified in any compiled tessellation control shader object; or – the output patch vertex count is specified differently in multiple tessellation control shader objects. • The program object contains objects to form a tessellation evaluation shader (see section 2.15.3), and – the program is not separable and contains no objects to form a vertex shader; – the tessellation primitive mode is not specified in any compiled tessellation evaluation shader object; or – the tessellation primitive mode, spacing, vertex order, or point mode is specified differently in multiple tessellation evaluation shader objects. • The program object contains objects to form a geometry shader (see section 2.16), and – the program is not separable and contains no objects to form a vertex shader; – the input primitive type, output primitive type, or maximum output vertex count is not specified in any compiled geometry shader object; or – the input primitive type, output primitive type, or maximum output vertex count is specified differently in multiple geometry shader objects. If LinkProgram failed, any information about a previous link of that program object is lost. Thus, a failed link does not restore the old state of program. When successfully linked program objects are used for rendering operations, they may access GL state and interface with other stages of the GL pipeline through OpenGL 4.2 (Compatibility Profile) - April 27, 2012
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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 Tessellation . .
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CONTENTS v 3.12 Fog . . . . . . . .
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CONTENTS vii A Invariance 587 A.1 R
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CONTENTS ix L Version 4.2 658 L.1 N
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CONTENTS xi M.3.70 BPTC texture com
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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 6.29 Pixel Oper
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Chapter 1 Introduction This documen
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1.5. OUR VIEW 3 available to the us
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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 must not
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2.1. OPENGL FUNDAMENTALS 11 2.1.2 F
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2.3. GL COMMAND SYNTAX 13 describe
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2.3. GL COMMAND SYNTAX 15 indicates
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2.4. BASIC GL OPERATION 17 Transfor
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2.6. BEGIN/END PARADIGM 19 To allow
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2.6. BEGIN/END PARADIGM 21 Vertex C
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2.6. BEGIN/END PARADIGM 23 2.6.1 Be
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2.6. BEGIN/END PARADIGM 25 vertex A
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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 that i
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2.7. VERTEX SPECIFICATION 33 The Te
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2.7. VERTEX SPECIFICATION 35 The Co
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2.7. VERTEX SPECIFICATION 37 generi
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2.8. VERTEX ARRAYS 39 indicates the
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2.8. VERTEX ARRAYS 41 integer value
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2.8. VERTEX ARRAYS 43 does not exis
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Page 75 and 76: 2.8. VERTEX ARRAYS 55 InterleavedAr
Page 77 and 78: 2.9. BUFFER OBJECTS 57 Target name
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Page 83 and 84: 2.9. BUFFER OBJECTS 63 Name Value B
Page 85 and 86: 2.9. BUFFER OBJECTS 65 Unmapping Bu
Page 87 and 88: 2.9. BUFFER OBJECTS 67 binding corr
Page 89 and 90: 2.11. RECTANGLES 69 The command voi
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Page 137 and 138: 2.14. VERTEX SHADERS 117 uniformBlo
Page 139 and 140: 2.14. VERTEX SHADERS 119 REFERENCED
Page 141 and 142: 2.14. VERTEX SHADERS 121 of the val
Page 143 and 144: 2.14. VERTEX SHADERS 123 OpenGL Sha
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Page 151 and 152: 2.14. VERTEX SHADERS 131 • Member
Page 153 and 154: 2.14. VERTEX SHADERS 133 matrix is
Page 155 and 156: 2.14. VERTEX SHADERS 135 Additional
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Page 161 and 162: 2.14. VERTEX SHADERS 141 ponents. F
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2.14. VERTEX SHADERS 147 • the co
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2.14. VERTEX SHADERS 149 Texture lo
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2.14. VERTEX SHADERS 151 • the ve
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2.14. VERTEX SHADERS 153 The INVALI
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2.14. VERTEX SHADERS 155 fragment s
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2.14. VERTEX SHADERS 157 command th
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2.14. VERTEX SHADERS 159 accessed t
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2.15. TESSELLATION 161 • A boolea
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2.15. TESSELLATION 163 output varia
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2.15. TESSELLATION 165 Tessellation
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2.15. TESSELLATION 167 variables. U
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2.15. TESSELLATION 169 tive influen
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2.15. TESSELLATION 171 are typicall
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2.15. TESSELLATION 173 Figure 2.14.
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2.15. TESSELLATION 175 and horizont
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2.15. TESSELLATION 177 second outer
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2.15. TESSELLATION 179 Tessellation
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2.15. TESSELLATION 181 vertex being
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2.16. GEOMETRY SHADERS 183 2.16 Geo
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2.16. GEOMETRY SHADERS 185 Geometry
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2.16. GEOMETRY SHADERS 187 • Fron
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2.16. GEOMETRY SHADERS 189 • Stru
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2.16. GEOMETRY SHADERS 191 The buil
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2.17. COORDINATE TRANSFORMATIONS 19
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2.17. COORDINATE TRANSFORMATIONS 19
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2.18. ASYNCHRONOUS QUERIES 197 Each
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2.19. CONDITIONAL RENDERING 199 2.1
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2.20. TRANSFORM FEEDBACK 201 return
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2.20. TRANSFORM FEEDBACK 203 Transf
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2.20. TRANSFORM FEEDBACK 205 may be
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2.21. PRIMITIVE QUERIES 207 void Dr
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2.22. FLATSHADING 209 Primitive typ
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2.23. PRIMITIVE CLIPPING 211 the pl
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2.24. FINAL COLOR PROCESSING 213 2.
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2.25. CURRENT RASTER POSITION 215 f
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2.25. CURRENT RASTER POSITION 217 s
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219 Fixed function or fragment shad
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3.3. ANTIALIASING 221 In RGBA mode,
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3.3. ANTIALIASING 223 void GetMulti
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3.4. POINTS 225 size specifies the
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3.4. POINTS 227 with the vertex cor
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3.4. POINTS 229 6.0 5.0 4.0 3.0 2.0
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3.4. POINTS 231 where size is the p
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¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦ ¦
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3.5. LINE SEGMENTS 235 Line Stipple
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3.5. LINE SEGMENTS 237 Figure 3.6.
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3.6. POLYGONS 239 3.6.1 Basic Polyg
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3.6. POLYGONS 241 For a polygon wit
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3.6. POLYGONS 243 3.6.5 Depth Offse
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3.7. PIXEL RECTANGLES 245 polygon r
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3.7. PIXEL RECTANGLES 247 3.7.2 The
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3.7. PIXEL RECTANGLES 249 Map Name
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3.7. PIXEL RECTANGLES 251 The color
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3.7. PIXEL RECTANGLES 253 In additi
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3.7. PIXEL RECTANGLES 255 Special f
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3.7. PIXEL RECTANGLES 257 Histogram
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¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡
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3.7. PIXEL RECTANGLES 261 type Para
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3.7. PIXEL RECTANGLES 263 Element S
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3.7. PIXEL RECTANGLES 265 type Para
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3.7. PIXEL RECTANGLES 267 UNSIGNED_
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3.7. PIXEL RECTANGLES 269 FLOAT_32_
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3.7. PIXEL RECTANGLES 271 Conversio
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3.7. PIXEL RECTANGLES 273 For integ
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3.7. PIXEL RECTANGLES 275 Arithmeti
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3.7. PIXEL RECTANGLES 277 The inter
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3.7. PIXEL RECTANGLES 279 Border Mo
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3.7. PIXEL RECTANGLES 281 where C[i
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3.7. PIXEL RECTANGLES 283 B i and A
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¡ ¡ ¡ ¡ ¡ ¡ 3.8. BITMAPS 285
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3.10. TEXTURING 287 not be performe
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3.10. TEXTURING 289 a texture matri
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3.10. TEXTURING 291 returns TRUE if
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3.10. TEXTURING 293 if TEXTURE_WRAP
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3.10. TEXTURING 295 parameter UNPAC
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3.10. TEXTURING 297 Generic compres
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3.10. TEXTURING 299 N is the number
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3.10. TEXTURING 301 Sized internal
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3.10. TEXTURING 303 Sized Base D S
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3.10. TEXTURING 305 Thus the last t
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3.10. TEXTURING 307 of TEXTURE_CUBE
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3.10. TEXTURING 309 1.0 5.0 4 3 t v
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3.10. TEXTURING 311 index values fr
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3.10. TEXTURING 313 counterparts. A
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3.10. TEXTURING 315 If the internal
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3.10. TEXTURING 317 by b s , b w ,
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3.10. TEXTURING 319 • data points
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3.10. TEXTURING 321 FORMAT, and TEX
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3.10. TEXTURING 323 If either width
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3.10. TEXTURING 325 Internal format
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3.10. TEXTURING 327 Name Type Legal
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3.10. TEXTURING 329 Major Axis Dire
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3.10. TEXTURING 331 Scale Factor an
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3.10. TEXTURING 333 where ∆x = x
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3.10. TEXTURING 335 If the selected
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3.10. TEXTURING 337 Figure 3.11. An
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3.10. TEXTURING 339 where max(1,
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3.10. TEXTURING 341 The internal fo
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3.10. TEXTURING 343 A cube map arra
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3.10. TEXTURING 345 and maximum lev
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3.10. TEXTURING 347 • If executin
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3.10. TEXTURING 349 • target is n
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3.10. TEXTURING 351 When target is
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3.10. TEXTURING 353 Texture Base RE
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3.10. TEXTURING 355 SRCn_RGB OPERAN
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3.10. TEXTURING 357 If the value of
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3.10. TEXTURING 359 bound texture i
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3.10. TEXTURING 361 state, all text
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3.10. TEXTURING 363 Texture target
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3.10. TEXTURING 365 unit, as enumer
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3.10. TEXTURING 367 • reading the
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3.12. FOG 369 Color sum is enabled
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3.13. FRAGMENT SHADERS 371 sections
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3.13. FRAGMENT SHADERS 373 A fragme
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3.13. FRAGMENT SHADERS 375 as follo
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3.13. FRAGMENT SHADERS 377 The buil
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3.13. FRAGMENT SHADERS 379 void Bin
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3.14. ANTIALIASING APPLICATION 381
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383 the GL context, the framebuffer
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4.1. PER-FRAGMENT OPERATIONS 385 th
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4.1. PER-FRAGMENT OPERATIONS 387 Al
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4.1. PER-FRAGMENT OPERATIONS 389 vo
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4.1. PER-FRAGMENT OPERATIONS 391 ba
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4.1. PER-FRAGMENT OPERATIONS 393 Bl
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4.1. PER-FRAGMENT OPERATIONS 395 Mo
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4.1. PER-FRAGMENT OPERATIONS 397 Fu
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4.1. PER-FRAGMENT OPERATIONS 399 is
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4.1. PER-FRAGMENT OPERATIONS 401 Ar
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4.2. WHOLE FRAMEBUFFER OPERATIONS 4
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4.3. DRAWING, READING, AND COPYING
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¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡ ¡
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4.4. FRAMEBUFFER OBJECTS 427 4.3.4
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4.4. FRAMEBUFFER OBJECTS 429 Frameb
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4.4. FRAMEBUFFER OBJECTS 431 • A
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4.4. FRAMEBUFFER OBJECTS 433 Sized
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4.4. FRAMEBUFFER OBJECTS 435 set to
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4.4. FRAMEBUFFER OBJECTS 437 TEXTUR
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4.4. FRAMEBUFFER OBJECTS 439 • If
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4.4. FRAMEBUFFER OBJECTS 441 For th
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4.4. FRAMEBUFFER OBJECTS 443 • im
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4.4. FRAMEBUFFER OBJECTS 445 • At
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4.4. FRAMEBUFFER OBJECTS 447 4.4.5
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4.4. FRAMEBUFFER OBJECTS 449 Layer
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Chapter 5 Special Functions This ch
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5.1. EVALUATORS 453 Integers Reals
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5.1. EVALUATORS 455 The second way
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5.2. SELECTION 457 EvalCoord2(p *
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5.3. FEEDBACK 459 of each primitive
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5.4. TIMER QUERIES 461 Type coordin
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5.5. DISPLAY LISTS 463 started or s
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5.5. DISPLAY LISTS 465 provides an
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5.5. DISPLAY LISTS 467 Framebuffer
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5.7. SYNC OBJECTS AND FENCES 469 Pr
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5.7. SYNC OBJECTS AND FENCES 471 If
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5.8. HINTS 473 Target PERSPECTIVE_C
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6.1. QUERYING GL STATE 475 void Get
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6.1. QUERYING GL STATE 477 6.1.3 En
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6.1. QUERYING GL STATE 479 target m
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6.1. QUERYING GL STATE 481 • form
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6.1. QUERYING GL STATE 483 When the
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6.1. QUERYING GL STATE 485 format N
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6.1. QUERYING GL STATE 487 target m
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6.1. QUERYING GL STATE 489 resets a
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6.1. QUERYING GL STATE 491 names, a
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6.1. QUERYING GL STATE 493 void Get
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6.1. QUERYING GL STATE 495 To query
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6.1. QUERYING GL STATE 497 returns
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6.1. QUERYING GL STATE 499 which ha
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6.1. QUERYING GL STATE 501 tion att
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6.1. QUERYING GL STATE 503 obtain t
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6.1. QUERYING GL STATE 505 returns
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6.1. QUERYING GL STATE 507 • If p
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6.1. QUERYING GL STATE 509 If pname
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6.1. QUERYING GL STATE 511 Stack At
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6.2. STATE TABLES 513 Type code Exp
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6.2. STATE TABLES 515 Get value Typ
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6.2. STATE TABLES 537 Get Command I
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6.2. STATE TABLES 553 Get Command I
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6.2. STATE TABLES 569 Get Command M
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Appendix A Invariance The OpenGL sp
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A.3. INVARIANCE RULES 589 • Sciss
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A.4. TESSELLATION INVARIANCE 591
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A.5. ATOMIC COUNTER INVARIANCE 593
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Appendix B Corollaries The followin
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597 16. ColorMaterial has no effect
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C.1. RGTC COMPRESSED TEXTURE IMAGE
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C.2. BPTC COMPRESSED TEXTURE IMAGE
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Appendix D Shared Objects and Multi
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D.2. SYNC OBJECTS AND MULTIPLE CONT
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D.3. PROPAGATING CHANGES TO OBJECTS
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Appendix E Profiles and the Depreca
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E.2. DEPRECATED AND REMOVED FEATURE
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F.2. DEPRECATION MODEL 627 • Fine
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F.4. CHANGE LOG 629 • Changed Cle
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F.5. CREDITS AND ACKNOWLEDGEMENTS 6
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Appendix G Version 3.1 OpenGL versi
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G.4. CREDITS AND ACKNOWLEDGEMENTS 6
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G.4. CREDITS AND ACKNOWLEDGEMENTS 6
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H.2. DEPRECATION MODEL 639 • BGRA
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H.4. CHANGE LOG 641 • Change flat
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H.5. CREDITS AND ACKNOWLEDGEMENTS 6
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Appendix I Version 3.3 OpenGL versi
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I.3. CHANGE LOG 647 I.3 Change Log
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Appendix J Version 4.0 OpenGL versi
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J.2. DEPRECATION MODEL 651 (GL_ARB_
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J.4. CREDITS AND ACKNOWLEDGEMENTS 6
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K.2. DEPRECATION MODEL 655 • Abil
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K.5. CREDITS AND ACKNOWLEDGEMENTS 6
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L.2. DEPRECATION MODEL 659 • Inst
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L.4. CHANGE LOG 661 • Change core
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L.4. CHANGE LOG 663 • Add error c
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L.4. CHANGE LOG 665 • Add multisa
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L.4. CHANGE LOG 667 • Remove clam
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L.5. CREDITS AND ACKNOWLEDGEMENTS 6
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M.3. ARB EXTENSIONS 671 combination
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M.3. ARB EXTENSIONS 673 M.3.6 Textu
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M.3. ARB EXTENSIONS 675 M.3.21 Low-
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M.3. ARB EXTENSIONS 677 The name st
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M.3. ARB EXTENSIONS 679 The name st
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M.3. ARB EXTENSIONS 681 M.3.53 Fast
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M.3. ARB EXTENSIONS 683 M.3.65 Cube
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M.3. ARB EXTENSIONS 685 M.3.76 RGB1
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M.3. ARB EXTENSIONS 687 M.3.90 Sepa
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M.3. ARB EXTENSIONS 689 introduced
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Index x, 549 x BIAS, 248, 545 x BIT
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INDEX 693 ATOMIC COUNTER BUFFER REF
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INDEX 695 ClearBuffer*, 199, 220, 4
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INDEX 697 CompressedTexSubImage, 66
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INDEX 699 DEPTH STENCIL ATTACHMENT,
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INDEX 701 558 equal spacing, 169 EQ
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INDEX 703 LAYER TARGETS, 444 FRAMEB
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INDEX 705 GetPixelMap, 477, 549 Get
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INDEX 707 GL ARB shader bit encodin
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INDEX 709 gl BackColor, 106 gl Back
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INDEX 711 304, 327, 328, 352, 353,
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INDEX 713 LIST BIT, 511 LIST INDEX,
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INDEX 715 394, 396, 405, 407, 411,
Page 737 and 738:
INDEX 717 141, 577, 621, 628, 639 M
Page 739 and 740:
INDEX 719 OR, 401 OR INVERTED, 401
Page 741 and 742:
INDEX 721 SCALE, 281 PREVIOUS, 355,
Page 743 and 744:
INDEX 723 RENDER, 458, 459, 586 REN
Page 745 and 746:
INDEX 725 SampleCoverage, 388, 660
Page 747 and 748:
INDEX 727 STENCIL BACK PASS DEPTH -
Page 749 and 750:
INDEX 729 TEXTURE BINDING xD, 529 T
Page 751 and 752:
INDEX 731 157 TEXTURE WIDTH, 315, 3
Page 753 and 754:
INDEX 733 UNIFORM BUFFER START, 495
Page 755 and 756:
INDEX 735 uvec3, 110, 122 uvec4, 11
show all

OpenGL 4.2 (Compatibility Profile) - April 27, 2012

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