gl

vertexAttrib4Nubv(Index::integer(), V) -> ok

Index = integer()

X = float()

Y = float()

Z = float()

Types

Index = integer()

X = integer()

Y = integer()

Z = integer()

W = integer()

vertexAttrib4sv(Index::integer(), V) -> ok

Index = integer()

Size = integer()

Type = enum()

Normalized = 0 | 1

Stride = integer()

See external documentation.

getBooleani_v(Target, Index) -> [0 | 1]

Types

Target = enum()

Index = integer()

getIntegeri_v(Target, Index) -> [integer()]

Types

Target = enum()

Index = integer()

enablei(Target, Index) -> ok

PrimitiveMode = enum()

Start transform feedback operation

Transform feedback mode captures the values of varying variables written by the vertex shader (or, if active, the geometry shader). Transform feedback is said to be active after a call to gl:beginTransformFeedback until a subsequent call to gl:beginTransformFeedback/1 . Transform feedback commands must be paired.

See external documentation.

endTransformFeedback() -> ok

See beginTransformFeedback/1

bindBufferRange(Target, Index, Buffer, Offset, Size) -> ok

Types

Target = enum()

Index = integer()

Buffer = integer()

Offset = integer()

Size = integer()

Bind a range within a buffer object to an indexed buffer target

gl:bindBufferRange binds a range the buffer object Buffer represented by Offset and Size to the binding point at index Index of the array of targets specified by Target . Each Target represents an indexed array of buffer binding points, as well as a single general binding point that can be used by other buffer manipulation functions such as gl:bindBuffer/2 or see glMapBuffer. In addition to binding a range of Buffer to the indexed buffer binding target, gl:bindBufferBase also binds the range to the generic buffer binding point specified by Target .

See external documentation.

bindBufferBase(Target, Index, Buffer) -> ok

Types

Target = enum()

Index = integer()

Buffer = integer()

Bind a buffer object to an indexed buffer target

gl:bindBufferBase binds the buffer object Buffer to the binding point at index Index of the array of targets specified by Target . Each Target represents an indexed array of buffer binding points, as well as a single general binding point that can be used by other buffer manipulation functions such as gl:bindBuffer/2 or see glMapBuffer. In addition to binding Buffer to the indexed buffer binding target, gl:bindBufferBase also binds Buffer to the generic buffer binding point specified by Target .

See external documentation.

transformFeedbackVaryings(Program, Varyings, BufferMode) -> ok

Types

Program = integer()

Varyings = iolist()

BufferMode = enum()

Specify values to record in transform feedback buffers

The names of the vertex or geometry shader outputs to be recorded in transform feedback mode are specified using gl:transformFeedbackVaryings. When a geometry shader is active, transform feedback records the values of selected geometry shader output variables from the emitted vertices. Otherwise, the values of the selected vertex shader outputs are recorded.

See external documentation.

getTransformFeedbackVarying(Program, Index, BufSize) -> {Size::integer(), Type::enum(), Name::string()}

Types

Program = integer()

Index = integer()

BufSize = integer()

Retrieve information about varying variables selected for transform feedback

Information about the set of varying variables in a linked program that will be captured during transform feedback may be retrieved by calling gl:getTransformFeedbackVarying. gl:getTransformFeedbackVarying provides information about the varying variable selected by Index . An Index of 0 selects the first varying variable specified in the Varyings array passed to gl:transformFeedbackVaryings/3 , and an Index of ?GL_TRANSFORM_FEEDBACK_VARYINGS-1 selects the last such variable.

See external documentation.

clampColor(Target, Clamp) -> ok

Index = integer()

Pname = enum()

See getVertexAttribdv/2

getVertexAttribIuiv(Index, Pname) -> {integer(), integer(), integer(), integer()}

Types

Index = integer()

Pname = enum()

glGetVertexAttribI

See external documentation.

vertexAttribI1i(Index, X) -> ok

Types

Index = integer()

X = integer()

vertexAttribI2i(Index, X, Y) -> ok

Types

Index = integer()

X = integer()

Y = integer()

vertexAttribI3i(Index, X, Y, Z) -> ok

Types

Index = integer()

X = integer()

Y = integer()

Z = integer()

vertexAttribI4i(Index, X, Y, Z, W) -> ok

Types

Index = integer()

X = integer()

Y = integer()

Z = integer()

W = integer()

vertexAttribI1ui(Index, X) -> ok

Types

Index = integer()

X = integer()

vertexAttribI2ui(Index, X, Y) -> ok

Types

Index = integer()

X = integer()

Y = integer()

vertexAttribI3ui(Index, X, Y, Z) -> ok

Types

Index = integer()

X = integer()

Y = integer()

Z = integer()

vertexAttribI4ui(Index, X, Y, Z, W) -> ok

Types

Index = integer()

X = integer()

Y = integer()

Z = integer()

Program = integer()

Color = integer()

Name = string()

Bind a user-defined varying out variable to a fragment shader color number

gl:bindFragDataLocation explicitly specifies the binding of the user-defined varying out variable Name to fragment shader color number ColorNumber for program Program . If Name was bound previously, its assigned binding is replaced with ColorNumber . Name must be a null-terminated string. ColorNumber must be less than ?GL_MAX_DRAW_BUFFERS .

See external documentation.

getFragDataLocation(Program, Name) -> integer()

Types

Program = integer()

Name = string()

Query the bindings of color numbers to user-defined varying out variables

gl:getFragDataLocation retrieves the assigned color number binding for the user-defined varying out variable Name for program Program . Program must have previously been linked. Name must be a null-terminated string. If Name is not the name of an active user-defined varying out fragment shader variable within Program , -1 will be returned.

See external documentation.

uniform1ui(Location, V0) -> ok

Types

Location = integer()

V0 = integer()

uniform2ui(Location, V0, V1) -> ok

Types

Location = integer()

V0 = integer()

V1 = integer()

uniform3ui(Location, V0, V1, V2) -> ok

Types

Location = integer()

V0 = integer()

V1 = integer()

V2 = integer()

uniform4ui(Location, V0, V1, V2, V3) -> ok

Types

Location = integer()

V0 = integer()

V1 = integer()

Types

Target = enum()

Pname = enum()

Params = tuple()

glTexParameterI

See external documentation.

getTexParameterIiv(Target, Pname) -> {integer(), integer(), integer(), integer()}

Types

Target = enum()

Pname = enum()

See getTexParameterfv/2

getTexParameterIuiv(Target, Pname) -> {integer(), integer(), integer(), integer()}

Types

Target = enum()

Pname = enum()

glGetTexParameterI

See external documentation.

clearBufferiv(Buffer, Drawbuffer, Value) -> ok

Types

Buffer = enum()

Drawbuffer = integer()

Value = tuple()

Clear individual buffers of the currently bound draw framebuffer

gl:clearBuffer* clears the specified buffer to the specified value(s). If Buffer is ?GL_COLOR, a particular draw buffer ?GL_DRAWBUFFER I is specified by passing I as DrawBuffer . In this case, Value points to a four-element vector specifying the R, G, B and A color to clear that draw buffer to. If Buffer is one of ?GL_FRONT, ?GL_BACK, ?GL_LEFT, ?GL_RIGHT, or ?GL_FRONT_AND_BACK , identifying multiple buffers, each selected buffer is cleared to the same value. Clamping and conversion for fixed-point color buffers are performed in the same fashion as gl:clearColor/4 .

See external documentation.

clearBufferuiv(Buffer, Drawbuffer, Value) -> ok

Types

Buffer = enum()

Drawbuffer = integer()

Value = tuple()

See clearBufferiv/3

clearBufferfv(Buffer, Drawbuffer, Value) -> ok

Types

Buffer = enum()

Drawbuffer = integer()

Value = tuple()

See clearBufferiv/3

clearBufferfi(Buffer, Drawbuffer, Depth, Stencil) -> ok

Types

Buffer = enum()

Drawbuffer = integer()

Depth = float()

Stencil = integer()

glClearBufferfi

See external documentation.

getStringi(Name, Index) -> string()

Types

Name = enum()

Index = integer()

See getString/1

drawArraysInstanced(Mode, First, Count, Primcount) -> ok

Types

Mode = enum()

First = integer()

Count = integer()

Primcount = integer()

glDrawArraysInstance

See external documentation.

drawElementsInstanced(Mode, Count, Type, Indices, Primcount) -> ok

Types

Mode = enum()

Count = integer()

Type = enum()

Indices = offset() | mem()

Primcount = integer()

glDrawElementsInstance

See external documentation.

texBuffer(Target, Internalformat, Buffer) -> ok

Types

Target = enum()

Internalformat = enum()

Buffer = integer()

Attach the storage for a buffer object to the active buffer texture

gl:texBuffer attaches the storage for the buffer object named Buffer to the active buffer texture, and specifies the internal format for the texel array found in the attached buffer object. If Buffer is zero, any buffer object attached to the buffer texture is detached and no new buffer object is attached. If Buffer is non-zero, it must be the name of an existing buffer object. Target must be ?GL_TEXTURE_BUFFER . Internalformat specifies the storage format, and must be one of the following sized internal formats:

See external documentation.

primitiveRestartIndex(Index) -> ok

Types

Index = integer()

Specify the primitive restart index

gl:primitiveRestartIndex specifies a vertex array element that is treated specially when primitive restarting is enabled. This is known as the primitive restart index.

See external documentation.

getInteger64i_v(Target, Index) -> [integer()]

Types

Target = enum()

Index = integer()

getBufferParameteri64v(Target, Pname) -> [integer()]

Types

Target = enum()

Pname = enum()

glGetBufferParameteri64v

See external documentation.

framebufferTexture(Target, Attachment, Texture, Level) -> ok

Types

Target = enum()

Attachment = enum()

Texture = integer()

Level = integer()

Attach a level of a texture object as a logical buffer to the currently bound framebuffer object

gl:framebufferTexture, gl:framebufferTexture1D, gl:framebufferTexture2D, and gl:framebufferTexture attach a selected mipmap level or image of a texture object as one of the logical buffers of the framebuffer object currently bound to Target . Target must be ?GL_DRAW_FRAMEBUFFER, ?GL_READ_FRAMEBUFFER, or ?GL_FRAMEBUFFER . ?GL_FRAMEBUFFER is equivalent to ?GL_DRAW_FRAMEBUFFER.

See external documentation.

vertexAttribDivisor(Index, Divisor) -> ok

Types

Index = integer()

Divisor = integer()

Modify the rate at which generic vertex attributes advance during instanced rendering

gl:vertexAttribDivisor modifies the rate at which generic vertex attributes advance when rendering multiple instances of primitives in a single draw call. If Divisor is zero, the attribute at slot Index advances once per vertex. If Divisor is non-zero, the attribute advances once per Divisor instances of the set(s) of vertices being rendered. An attribute is referred to as instanced if its ?GL_VERTEX_ATTRIB_ARRAY_DIVISOR value is non-zero.

See external documentation.

minSampleShading(Value) -> ok

Types

Value = clamp()

Specifies minimum rate at which sample shaing takes place

gl:minSampleShading specifies the rate at which samples are shaded within a covered pixel. Sample-rate shading is enabled by calling gl:enable/1 with the parameter ?GL_SAMPLE_SHADING . If ?GL_MULTISAMPLE or ?GL_SAMPLE_SHADING is disabled, sample shading has no effect. Otherwise, an implementation must provide at least as many unique color values for each covered fragment as specified by Value times Samples where Samples is the value of ?GL_SAMPLES for the current framebuffer. At least 1 sample for each covered fragment is generated.

See external documentation.

blendEquationi(Buf, Mode) -> ok

Types

Buf = integer()

Mode = enum()

See blendEquation/1

blendEquationSeparatei(Buf, ModeRGB, ModeAlpha) -> ok

Types

Buf = integer()

ModeRGB = enum()

ModeAlpha = enum()

See blendEquationSeparate/2

blendFunci(Buf, Src, Dst) -> ok

Types

Buf = integer()

Src = enum()

Dst = enum()

glBlendFunci

See external documentation.

blendFuncSeparatei(Buf, SrcRGB, DstRGB, SrcAlpha, DstAlpha) -> ok

Types

Buf = integer()

SrcRGB = enum()

DstRGB = enum()

Target = enum()

Format = enum()

String = string()

glProgramStringARB

See external documentation.

bindProgramARB(Target, Program) -> ok

Types

Target = enum()

programEnvParameter4fARB(Target, Index, X, Y, Z, W) -> ok

Types

Target = enum()

Index = integer()

X = float()

Y = float()

Z = float()

W = float()

glProgramEnvParameterARB

See external documentation.

programEnvParameter4fvARB(Target, Index, Params) -> ok

Types

Target = enum()

Index = integer()

Params = {float(), float(), float(), float()}

glProgramEnvParameterARB

See external documentation.

programLocalParameter4dARB(Target, Index, X, Y, Z, W) -> ok

Types

Target = enum()

Index = integer()

X = float()

Y = float()

Z = float()

W = float()

glProgramLocalParameterARB

See external documentation.

programLocalParameter4dvARB(Target, Index, Params) -> ok

Types

Target = enum()

Index = integer()

Params = {float(), float(), float(), float()}

glProgramLocalParameterARB

See external documentation.

programLocalParameter4fARB(Target, Index, X, Y, Z, W) -> ok

Types

Target = enum()

Index = integer()

X = float()

Y = float()

Z = float()

W = float()

glProgramLocalParameterARB

See external documentation.

programLocalParameter4fvARB(Target, Index, Params) -> ok

Types

Target = enum()

Types

Target = enum()

Pname = enum()

glGetBufferParameterARB

See external documentation.

deleteObjectARB(Obj) -> ok

Types

attachObjectARB(ContainerObj, Obj) -> ok

Types

ContainerObj = integer()

Obj = integer()

glAttachObjectARB

See external documentation.

linkProgramARB(ProgramObj) -> ok

Types

ProgramObj = integer()

glLinkProgramARB

See external documentation.

useProgramObjectARB(ProgramObj) -> ok

Types

ProgramObj = integer()

glUseProgramObjectARB

See external documentation.

validateProgramARB(ProgramObj) -> ok

ProgramObj = integer()

Index = integer()

MaxLength = integer()

glGetActiveUniformARB

See external documentation.

getUniformfvARB(ProgramObj, Location) -> matrix()

Types

ProgramObj = integer()

Location = integer()

glGetUniformARB

See external documentation.

getUniformivARB(ProgramObj, Location) -> {integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer()}

Types

ProgramObj = integer()

Location = integer()

glGetUniformARB

See external documentation.

getShaderSourceARB(Obj, MaxLength) -> string()

ProgramObj = integer()

Name = string()

glGetAttribLocationARB

See external documentation.

isRenderbuffer(Renderbuffer) -> 0 | 1

Types

Renderbuffer = integer()

Determine if a name corresponds to a renderbuffer object

gl:isRenderbuffer returns ?GL_TRUE if Renderbuffer is currently the name of a renderbuffer object. If Renderbuffer is zero, or if Renderbuffer is not the name of a renderbuffer object, or if an error occurs, gl:isRenderbuffer returns ?GL_FALSE. If Renderbuffer is a name returned by gl:genRenderbuffers/1 , by that has not yet been bound through a call to gl:bindRenderbuffer/2 or gl:framebufferRenderbuffer/4 , then the name is not a renderbuffer object and gl:isRenderbuffer returns ?GL_FALSE .

See external documentation.

bindRenderbuffer(Target, Renderbuffer) -> ok

Types

Target = enum()

Renderbuffer = integer()

Bind a renderbuffer to a renderbuffer target

gl:bindRenderbuffer binds the renderbuffer object with name Renderbuffer to the renderbuffer target specified by Target . Target must be ?GL_RENDERBUFFER . Renderbuffer is the name of a renderbuffer object previously returned from a call to gl:genRenderbuffers/1 , or zero to break the existing binding of a renderbuffer object to Target .

See external documentation.

deleteRenderbuffers(Renderbuffers) -> ok

Types

Renderbuffers = [integer()]

Delete renderbuffer objects

gl:deleteRenderbuffers deletes the N renderbuffer objects whose names are stored in the array addressed by Renderbuffers . The name zero is reserved by the GL and is silently ignored, should it occur in Renderbuffers , as are other unused names. Once a renderbuffer object is deleted, its name is again unused and it has no contents. If a renderbuffer that is currently bound to the target ?GL_RENDERBUFFER is deleted, it is as though gl:bindRenderbuffer/2 had been executed with a Target of ?GL_RENDERBUFFER and a Name of zero.

See external documentation.

genRenderbuffers(N) -> [integer()]

Types

N = integer()

Generate renderbuffer object names

gl:genRenderbuffers returns N renderbuffer object names in Renderbuffers . There is no guarantee that the names form a contiguous set of integers; however, it is guaranteed that none of the returned names was in use immediately before the call to gl:genRenderbuffers .

See external documentation.

renderbufferStorage(Target, Internalformat, Width, Height) -> ok

Types

Target = enum()

Internalformat = enum()

Width = integer()

Height = integer()

Establish data storage, format and dimensions of a renderbuffer object's image

gl:renderbufferStorage is equivalent to calling gl:renderbufferStorageMultisample/5 with the Samples set to zero.

See external documentation.

getRenderbufferParameteriv(Target, Pname) -> integer()

Types

Target = enum()

Pname = enum()

Retrieve information about a bound renderbuffer object

gl:getRenderbufferParameteriv retrieves information about a bound renderbuffer object. Target specifies the target of the query operation and must be ?GL_RENDERBUFFER . Pname specifies the parameter whose value to query and must be one of ?GL_RENDERBUFFER_WIDTH , ?GL_RENDERBUFFER_HEIGHT, ?GL_RENDERBUFFER_INTERNAL_FORMAT, ?GL_RENDERBUFFER_RED_SIZE , ?GL_RENDERBUFFER_GREEN_SIZE, ?GL_RENDERBUFFER_BLUE_SIZE, ?GL_RENDERBUFFER_ALPHA_SIZE , ?GL_RENDERBUFFER_DEPTH_SIZE, ?GL_RENDERBUFFER_DEPTH_SIZE, ?GL_RENDERBUFFER_STENCIL_SIZE , or ?GL_RENDERBUFFER_SAMPLES.

See external documentation.

isFramebuffer(Framebuffer) -> 0 | 1

Types

Framebuffer = integer()

Determine if a name corresponds to a framebuffer object

gl:isFramebuffer returns ?GL_TRUE if Framebuffer is currently the name of a framebuffer object. If Framebuffer is zero, or if ?framebuffer is not the name of a framebuffer object, or if an error occurs, gl:isFramebuffer returns ?GL_FALSE. If Framebuffer is a name returned by gl:genFramebuffers/1 , by that has not yet been bound through a call to gl:bindFramebuffer/2 , then the name is not a framebuffer object and gl:isFramebuffer returns ?GL_FALSE.

See external documentation.

bindFramebuffer(Target, Framebuffer) -> ok

Types

Target = enum()

Framebuffer = integer()

Bind a framebuffer to a framebuffer target

gl:bindFramebuffer binds the framebuffer object with name Framebuffer to the framebuffer target specified by Target . Target must be either ?GL_DRAW_FRAMEBUFFER , ?GL_READ_FRAMEBUFFER or ?GL_FRAMEBUFFER. If a framebuffer object is bound to ?GL_DRAW_FRAMEBUFFER or ?GL_READ_FRAMEBUFFER, it becomes the target for rendering or readback operations, respectively, until it is deleted or another framebuffer is bound to the corresponding bind point. Calling gl:bindFramebuffer with Target set to ?GL_FRAMEBUFFER binds Framebuffer to both the read and draw framebuffer targets. Framebuffer is the name of a framebuffer object previously returned from a call to gl:genFramebuffers/1 , or zero to break the existing binding of a framebuffer object to Target .

See external documentation.

deleteFramebuffers(Framebuffers) -> ok

Types

Framebuffers = [integer()]

Delete framebuffer objects

gl:deleteFramebuffers deletes the N framebuffer objects whose names are stored in the array addressed by Framebuffers . The name zero is reserved by the GL and is silently ignored, should it occur in Framebuffers , as are other unused names. Once a framebuffer object is deleted, its name is again unused and it has no attachments. If a framebuffer that is currently bound to one or more of the targets ?GL_DRAW_FRAMEBUFFER or ?GL_READ_FRAMEBUFFER is deleted, it is as though gl:bindFramebuffer/2 had been executed with the corresponding Target and Framebuffer zero.

See external documentation.

genFramebuffers(N) -> [integer()]

Types

N = integer()

Generate framebuffer object names

gl:genFramebuffers returns N framebuffer object names in Ids . There is no guarantee that the names form a contiguous set of integers; however, it is guaranteed that none of the returned names was in use immediately before the call to gl:genFramebuffers .

See external documentation.

Target = enum()

Attachment = enum()

Textarget = enum()

Texture = integer()

Level = integer()

Zoffset = integer()

See framebufferTexture/4

framebufferRenderbuffer(Target, Attachment, Renderbuffertarget, Renderbuffer) -> ok

Types

Target = enum()

Attachment = enum()

Renderbuffertarget = enum()

Renderbuffer = integer()

Attach a renderbuffer as a logical buffer to the currently bound framebuffer object

gl:framebufferRenderbuffer attaches a renderbuffer as one of the logical buffers of the currently bound framebuffer object. Renderbuffer is the name of the renderbuffer object to attach and must be either zero, or the name of an existing renderbuffer object of type Renderbuffertarget . If Renderbuffer is not zero and if gl:framebufferRenderbuffer is successful, then the renderbuffer name Renderbuffer will be used as the logical buffer identified by Attachment of the framebuffer currently bound to Target .

See external documentation.

getFramebufferAttachmentParameteriv(Target, Attachment, Pname) -> integer()

Types

Target = enum()

Attachment = enum()

Pname = enum()

Retrieve information about attachments of a bound framebuffer object

gl:getFramebufferAttachmentParameter returns information about attachments of a bound framebuffer object. Target specifies the framebuffer binding point and must be ?GL_DRAW_FRAMEBUFFER, ?GL_READ_FRAMEBUFFER or ?GL_FRAMEBUFFER. ?GL_FRAMEBUFFER is equivalent to ?GL_DRAW_FRAMEBUFFER.

See external documentation.

generateMipmap(Target) -> ok

Types

Target = enum()

Generate mipmaps for a specified texture target

gl:generateMipmap generates mipmaps for the texture attached to Target of the active texture unit. For cube map textures, a ?GL_INVALID_OPERATION error is generated if the texture attached to Target is not cube complete.

See external documentation.

blitFramebuffer(SrcX0, SrcY0, SrcX1, SrcY1, DstX0, DstY0, DstX1, DstY1, Mask, Filter) -> ok

Types

SrcX0 = integer()

SrcY0 = integer()

SrcX1 = integer()

SrcY1 = integer()

DstX0 = integer()

DstY0 = integer()

DstX1 = integer()

DstY1 = integer()

Mask = integer()

Filter = enum()

Copy a block of pixels from the read framebuffer to the draw framebuffer

gl:blitFramebuffer transfers a rectangle of pixel values from one region of the read framebuffer to another region in the draw framebuffer. Mask is the bitwise OR of a number of values indicating which buffers are to be copied. The values are ?GL_COLOR_BUFFER_BIT , ?GL_DEPTH_BUFFER_BIT, and ?GL_STENCIL_BUFFER_BIT. The pixels corresponding to these buffers are copied from the source rectangle bounded by the locations ( SrcX0 ; SrcY0 ) and ( SrcX1 ; SrcY1 ) to the destination rectangle bounded by the locations ( DstX0 ; DstY0 ) and ( DstX1 ; DstY1 ). The lower bounds of the rectangle are inclusive, while the upper bounds are exclusive.

See external documentation.

renderbufferStorageMultisample(Target, Samples, Internalformat, Width, Height) -> ok

Types

Target = enum()

Samples = integer()

Internalformat = enum()

Width = integer()

Height = integer()

Establish data storage, format, dimensions and sample count of a renderbuffer object's image

gl:renderbufferStorageMultisample establishes the data storage, format, dimensions and number of samples of a renderbuffer object's image.

See external documentation.

framebufferTextureLayer(Target, Attachment, Texture, Level, Layer) -> ok

Types

Target = enum()

Attachment = enum()

Texture = integer()

Level = integer()

Layer = integer()

See framebufferTexture/4

framebufferTextureFaceARB(Target, Attachment, Texture, Level, Face) -> ok

Types

Target = enum()

Attachment = enum()

Texture = integer()

Level = integer()

Face = enum()

See framebufferTexture/4

flushMappedBufferRange(Target, Offset, Length) -> ok

Types

Target = enum()

Offset = integer()

Length = integer()

Indicate modifications to a range of a mapped buffer

gl:flushMappedBufferRange indicates that modifications have been made to a range of a mapped buffer. The buffer must previously have been mapped with the ?GL_MAP_FLUSH_EXPLICIT flag. Offset and Length indicate the modified subrange of the mapping, in basic units. The specified subrange to flush is relative to the start of the currently mapped range of the buffer. gl:flushMappedBufferRange may be called multiple times to indicate distinct subranges of the mapping which require flushing.

See external documentation.

bindVertexArray(Array) -> ok

Types

Array = integer()

Bind a vertex array object

gl:bindVertexArray binds the vertex array object with name Array . Array is the name of a vertex array object previously returned from a call to gl:genVertexArrays/1 , or zero to break the existing vertex array object binding.

See external documentation.

deleteVertexArrays(Arrays) -> ok

Types

Arrays = [integer()]

Delete vertex array objects

gl:deleteVertexArrays deletes N vertex array objects whose names are stored in the array addressed by Arrays . Once a vertex array object is deleted it has no contents and its name is again unused. If a vertex array object that is currently bound is deleted, the binding for that object reverts to zero and the default vertex array becomes current. Unused names in Arrays are silently ignored, as is the value zero.

See external documentation.

genVertexArrays(N) -> [integer()]

Types

N = integer()

Generate vertex array object names

gl:genVertexArrays returns N vertex array object names in Arrays . There is no guarantee that the names form a contiguous set of integers; however, it is guaranteed that none of the returned names was in use immediately before the call to gl:genVertexArrays .

See external documentation.

isVertexArray(Array) -> 0 | 1

Program = integer()

UniformIndex = integer()

BufSize = integer()

Query the name of an active uniform

gl:getActiveUniformName returns the name of the active uniform at UniformIndex within Program . If UniformName is not NULL, up to BufSize characters (including a nul-terminator) will be written into the array whose address is specified by UniformName . If Length is not NULL, the number of characters that were (or would have been) written into UniformName (not including the nul-terminator) will be placed in the variable whose address is specified in Length . If Length is NULL, no length is returned. The length of the longest uniform name in Program is given by the value of ?GL_ACTIVE_UNIFORM_MAX_LENGTH, which can be queried with gl:getProgramiv/2 .

See external documentation.

getUniformBlockIndex(Program, UniformBlockName) -> integer()

Types

Program = integer()

UniformBlockName = string()

Retrieve the index of a named uniform block

gl:getUniformBlockIndex retrieves the index of a uniform block within Program .

See external documentation.

getActiveUniformBlockiv(Program, UniformBlockIndex, Pname, Params) -> ok

Types

Program = integer()

UniformBlockIndex = integer()

Pname = enum()

Params = mem()

Query information about an active uniform block

gl:getActiveUniformBlockiv retrieves information about an active uniform block within Program .

See external documentation.

getActiveUniformBlockName(Program, UniformBlockIndex, BufSize) -> string()

Types

Program = integer()

UniformBlockIndex = integer()

BufSize = integer()

Retrieve the name of an active uniform block

gl:getActiveUniformBlockName retrieves the name of the active uniform block at UniformBlockIndex within Program .

See external documentation.

Mode = enum()

Start = integer()

End = integer()

Count = integer()

Type = enum()

Indices = offset() | mem()

Basevertex = integer()

Render primitives from array data with a per-element offset

gl:drawRangeElementsBaseVertex is a restricted form of gl:drawElementsBaseVertex/5 . Mode , Start , End , Count and Basevertex match the corresponding arguments to gl:drawElementsBaseVertex/5 , with the additional constraint that all values in the array Indices must lie between Start and End , inclusive, prior to adding Basevertex . Index values lying outside the range [ Start , End ] are treated in the same way as gl:drawElementsBaseVertex/5 . The i th element transferred by the corresponding draw call will be taken from element Indices [i] + Basevertex of each enabled array. If the resulting value is larger than the maximum value representable by Type , it is as if the calculation were upconverted to 32-bit unsigned integers (with wrapping on overflow conditions). The operation is undefined if the sum would be negative.

See external documentation.

drawElementsInstancedBaseVertex(Mode, Count, Type, Indices, Primcount, Basevertex) -> ok

Types

Mode = enum()

Count = integer()

Type = enum()

Indices = offset() | mem()

Primcount = integer()

Basevertex = integer()

Render multiple instances of a set of primitives from array data with a per-element offset

gl:drawElementsInstancedBaseVertex behaves identically to gl:drawElementsInstanced/5 except that the ith element transferred by the corresponding draw call will be taken from element Indices [i] + Basevertex of each enabled array. If the resulting value is larger than the maximum value representable by Type , it is as if the calculation were upconverted to 32-bit unsigned integers (with wrapping on overflow conditions). The operation is undefined if the sum would be negative.

See external documentation.

provokingVertex(Mode) -> ok

Types

Mode = enum()

Specifiy the vertex to be used as the source of data for flat shaded varyings

Flatshading a vertex shader varying output means to assign all vetices of the primitive the same value for that output. The vertex from which these values is derived is known as the provoking vertex and gl:provokingVertex specifies which vertex is to be used as the source of data for flat shaded varyings.

See external documentation.

fenceSync(Condition, Flags) -> integer()

Types

Condition = enum()

Flags = integer()

Create a new sync object and insert it into the GL command stream

gl:fenceSync creates a new fence sync object, inserts a fence command into the GL command stream and associates it with that sync object, and returns a non-zero name corresponding to the sync object.

See external documentation.

isSync(Sync) -> 0 | 1

Types

Sync = integer()

Determine if a name corresponds to a sync object

gl:isSync returns ?GL_TRUE if Sync is currently the name of a sync object. If Sync is not the name of a sync object, or if an error occurs, gl:isSync returns ?GL_FALSE. Note that zero is not the name of a sync object.

See external documentation.

deleteSync(Sync) -> ok

Types

Sync = integer()

Delete a sync object

gl:deleteSync deletes the sync object specified by Sync . If the fence command corresponding to the specified sync object has completed, or if no gl:waitSync/3 or gl:clientWaitSync/3 commands are blocking on Sync , the object is deleted immediately. Otherwise, Sync is flagged for deletion and will be deleted when it is no longer associated with any fence command and is no longer blocking any gl:waitSync/3 or gl:clientWaitSync/3 command. In either case, after gl:deleteSync returns, the name Sync is invalid and can no longer be used to refer to the sync object.

See external documentation.

clientWaitSync(Sync, Flags, Timeout) -> enum()

Types

Sync = integer()

Flags = integer()

Timeout = integer()

Block and wait for a sync object to become signaled

gl:clientWaitSync causes the client to block and wait for the sync object specified by Sync to become signaled. If Sync is signaled when gl:clientWaitSync is called, gl:clientWaitSync returns immediately, otherwise it will block and wait for up to Timeout nanoseconds for Sync to become signaled.

See external documentation.

waitSync(Sync, Flags, Timeout) -> ok

Types

Sync = integer()

Flags = integer()

Timeout = integer()

Instruct the GL server to block until the specified sync object becomes signaled

gl:waitSync causes the GL server to block and wait until Sync becomes signaled. Sync is the name of an existing sync object upon which to wait. Flags and Timeout are currently not used and must be set to zero and the special value ?GL_TIMEOUT_IGNORED , respectively

Flags and Timeout are placeholders for anticipated future extensions of sync object capabilities. They must have these reserved values in order that existing code calling gl:waitSync operate properly in the presence of such extensions.

See external documentation.

getInteger64v(Pname) -> [integer()]

Types

Pname = enum()

getSynciv(Sync, Pname, BufSize) -> [integer()]

Types

Sync = integer()

Pname = enum()

BufSize = integer()

Query the properties of a sync object

gl:getSynciv retrieves properties of a sync object. Sync specifies the name of the sync object whose properties to retrieve.

See external documentation.

texImage2DMultisample(Target, Samples, Internalformat, Width, Height, Fixedsamplelocations) -> ok

Types

Target = enum()

Samples = integer()

Internalformat = integer()

Width = integer()

Height = integer()

Fixedsamplelocations = 0 | 1

Establish the data storage, format, dimensions, and number of samples of a multisample texture's image

gl:texImage2DMultisample establishes the data storage, format, dimensions and number of samples of a multisample texture's image.

See external documentation.

texImage3DMultisample(Target, Samples, Internalformat, Width, Height, Depth, Fixedsamplelocations) -> ok

Types

Target = enum()

Samples = integer()

Internalformat = integer()

Width = integer()

Height = integer()

Depth = integer()

Fixedsamplelocations = 0 | 1

Establish the data storage, format, dimensions, and number of samples of a multisample texture's image

gl:texImage3DMultisample establishes the data storage, format, dimensions and number of samples of a multisample texture's image.

See external documentation.

getMultisamplefv(Pname, Index) -> {float(), float()}

Types

Pname = enum()

Index = integer()

Retrieve the location of a sample

gl:getMultisamplefv queries the location of a given sample. Pname specifies the sample parameter to retrieve and must be ?GL_SAMPLE_POSITION. Index corresponds to the sample for which the location should be returned. The sample location is returned as two floating-point values in Val[0] and Val[1] , each between 0 and 1, corresponding to the X and Y locations respectively in the GL pixel space of that sample. (0.5, 0.5) this corresponds to the pixel center. Index must be between zero and the value of ?GL_SAMPLES - 1.

See external documentation.

sampleMaski(Index, Mask) -> ok

Types

Index = integer()

Mask = integer()

Set the value of a sub-word of the sample mask

gl:sampleMaski sets one 32-bit sub-word of the multi-word sample mask, ?GL_SAMPLE_MASK_VALUE .

See external documentation.

namedStringARB(Type, Name, String) -> ok

Types

Type = enum()

Name = string()

String = string()

glNamedStringARB

See external documentation.

deleteNamedStringARB(Name) -> ok

Types

Name = string()

glDeleteNamedStringARB

See external documentation.

compileShaderIncludeARB(Shader, Path) -> ok

Types

Shader = integer()

Path = iolist()

glCompileShaderIncludeARB

See external documentation.

isNamedStringARB(Name) -> 0 | 1

Program = integer()

ColorNumber = integer()

Index = integer()

Name = string()

glBindFragDataLocationIndexe

See external documentation.

getFragDataIndex(Program, Name) -> integer()

Types

Program = integer()

Name = string()

Query the bindings of color indices to user-defined varying out variables

gl:getFragDataIndex returns the index of the fragment color to which the variable Name was bound when the program object Program was last linked. If Name is not a varying out variable of Program , or if an error occurs, -1 will be returned.

See external documentation.

genSamplers(Count) -> [integer()]

Types

Count = integer()

Generate sampler object names

gl:genSamplers returns N sampler object names in Samplers . There is no guarantee that the names form a contiguous set of integers; however, it is guaranteed that none of the returned names was in use immediately before the call to gl:genSamplers .

See external documentation.

deleteSamplers(Samplers) -> ok

Types

Samplers = [integer()]

Delete named sampler objects

gl:deleteSamplers deletes N sampler objects named by the elements of the array Ids . After a sampler object is deleted, its name is again unused. If a sampler object that is currently bound to a sampler unit is deleted, it is as though gl:bindSampler/2 is called with unit set to the unit the sampler is bound to and sampler zero. Unused names in samplers are silently ignored, as is the reserved name zero.

See external documentation.

isSampler(Sampler) -> 0 | 1

Types

Sampler = integer()

Determine if a name corresponds to a sampler object

gl:isSampler returns ?GL_TRUE if Id is currently the name of a sampler object. If Id is zero, or is a non-zero value that is not currently the name of a sampler object, or if an error occurs, gl:isSampler returns ?GL_FALSE.

See external documentation.

bindSampler(Unit, Sampler) -> ok

Types

Unit = integer()

Sampler = integer()

Bind a named sampler to a texturing target

gl:bindSampler binds Sampler to the texture unit at index Unit . Sampler must be zero or the name of a sampler object previously returned from a call to gl:genSamplers/1 . Unit must be less than the value of ?GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS.

See external documentation.

samplerParameteri(Sampler, Pname, Param) -> ok

Types

Sampler = integer()

Pname = enum()

Param = integer()

Set sampler parameters

gl:samplerParameter assigns the value or values in Params to the sampler parameter specified as Pname . Sampler specifies the sampler object to be modified, and must be the name of a sampler object previously returned from a call to gl:genSamplers/1 . The following symbols are accepted in Pname :

See external documentation.

samplerParameteriv(Sampler, Pname, Param) -> ok

Types

Sampler = integer()

Pname = enum()

Param = [integer()]

See samplerParameteri/3

samplerParameterf(Sampler, Pname, Param) -> ok

Types

Sampler = integer()

Pname = enum()

Param = float()

See samplerParameteri/3

samplerParameterfv(Sampler, Pname, Param) -> ok

Types

Sampler = integer()

Pname = enum()

Param = [float()]

See samplerParameteri/3

samplerParameterIiv(Sampler, Pname, Param) -> ok

Sampler = integer()

Pname = enum()

See getSamplerParameteriv/2

getSamplerParameterfv(Sampler, Pname) -> [float()]

Types

Sampler = integer()

Pname = enum()

See getSamplerParameteriv/2

getSamplerParameterIuiv(Sampler, Pname) -> [integer()]

uniform1d(Location, X) -> ok

Types

Location = integer()

X = float()

uniform2d(Location, X, Y) -> ok

Types

Location = integer()

X = float()

Y = float()

uniform3d(Location, X, Y, Z) -> ok

Types

Location = integer()

X = float()

Y = float()

Z = float()

uniform4d(Location, X, Y, Z, W) -> ok

Types

Location = integer()

X = float()

Y = float()

Z = float()

W = float()

uniform1dv(Location, Value) -> ok

Types

Location = integer()

Value = [float()]

uniform2dv(Location, Value) -> ok

Types

Location = integer()

Value = [{float(), float()}]

uniform3dv(Location, Value) -> ok

Types

Location = integer()

Value = [{float(), float(), float()}]

uniform4dv(Location, Value) -> ok

Program = integer()

Location = integer()

See getUniformfv/2

getSubroutineUniformLocation(Program, Shadertype, Name) -> integer()

Types

Program = integer()

Shadertype = enum()

Name = string()

Retrieve the location of a subroutine uniform of a given shader stage within a program

gl:getSubroutineUniformLocation returns the location of the subroutine uniform variable Name in the shader stage of type Shadertype attached to Program , with behavior otherwise identical to gl:getUniformLocation/2 .

See external documentation.

getSubroutineIndex(Program, Shadertype, Name) -> integer()

Shadertype = enum()

Indices = [integer()]

Load active subroutine uniforms

gl:uniformSubroutines loads all active subroutine uniforms for shader stage Shadertype of the current program with subroutine indices from Indices , storing Indices[i] into the uniform at location I . Count must be equal to the value of ?GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the program currently in use at shader stage Shadertype . Furthermore, all values in Indices must be less than the value of ?GL_ACTIVE_SUBROUTINES for the shader stage.

See external documentation.

getUniformSubroutineuiv(Shadertype, Location) -> {integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer(), integer()}

Types

Shadertype = enum()

Location = integer()

Retrieve the value of a subroutine uniform of a given shader stage of the current program

gl:getUniformSubroutine retrieves the value of the subroutine uniform at location Location for shader stage Shadertype of the current program. Location must be less than the value of ?GL_ACTIVE_SUBROUTINE_UNIFORM_LOCATIONS for the shader currently in use at shader stage Shadertype . The value of the subroutine uniform is returned in Values .

See external documentation.

getProgramStageiv(Program, Shadertype, Pname) -> integer()

Types

Program = integer()

Shadertype = enum()

Pname = enum()

Retrieve properties of a program object corresponding to a specified shader stage

gl:getProgramStage queries a parameter of a shader stage attached to a program object. Program contains the name of the program to which the shader is attached. Shadertype specifies the stage from which to query the parameter. Pname specifies which parameter should be queried. The value or values of the parameter to be queried is returned in the variable whose address is given in Values .

See external documentation.

patchParameteri(Pname, Value) -> ok

Types

Pname = enum()

Value = integer()

Specifies the parameters for patch primitives

gl:patchParameter specifies the parameters that will be used for patch primitives. Pname specifies the parameter to modify and must be either ?GL_PATCH_VERTICES, ?GL_PATCH_DEFAULT_OUTER_LEVEL or ?GL_PATCH_DEFAULT_INNER_LEVEL. For gl:patchParameteri, Value specifies the new value for the parameter specified by Pname . For gl:patchParameterfv, Values specifies the address of an array containing the new values for the parameter specified by Pname .

See external documentation.

patchParameterfv(Pname, Values) -> ok

Types

Pname = enum()

Values = [float()]

See patchParameteri/2

bindTransformFeedback(Target, Id) -> ok

Types

Target = enum()

Id = integer()

Bind a transform feedback object

gl:bindTransformFeedback binds the transform feedback object with name Id to the current GL state. Id must be a name previously returned from a call to gl:genTransformFeedbacks/1 . If Id has not previously been bound, a new transform feedback object with name Id and initialized with with the default transform state vector is created.

See external documentation.

deleteTransformFeedbacks(Ids) -> ok

Types

Ids = [integer()]

Delete transform feedback objects

gl:deleteTransformFeedbacks deletes the N transform feedback objects whose names are stored in the array Ids . Unused names in Ids are ignored, as is the name zero. After a transform feedback object is deleted, its name is again unused and it has no contents. If an active transform feedback object is deleted, its name immediately becomes unused, but the underlying object is not deleted until it is no longer active.

See external documentation.

genTransformFeedbacks(N) -> [integer()]

Types

N = integer()

Reserve transform feedback object names

gl:genTransformFeedbacks returns N previously unused transform feedback object names in Ids . These names are marked as used, for the purposes of gl:genTransformFeedbacks only, but they acquire transform feedback state only when they are first bound.

See external documentation.

isTransformFeedback(Id) -> 0 | 1

Types

Id = integer()

Determine if a name corresponds to a transform feedback object

gl:isTransformFeedback returns ?GL_TRUE if Id is currently the name of a transform feedback object. If Id is zero, or if ?id is not the name of a transform feedback object, or if an error occurs, gl:isTransformFeedback returns ?GL_FALSE. If Id is a name returned by gl:genTransformFeedbacks/1 , but that has not yet been bound through a call to gl:bindTransformFeedback/2 , then the name is not a transform feedback object and gl:isTransformFeedback returns ?GL_FALSE .

See external documentation.

pauseTransformFeedback() -> ok

Pause transform feedback operations

gl:pauseTransformFeedback pauses transform feedback operations on the currently active transform feedback object. When transform feedback operations are paused, transform feedback is still considered active and changing most transform feedback state related to the object results in an error. However, a new transform feedback object may be bound while transform feedback is paused.

See external documentation.

resumeTransformFeedback() -> ok

Resume transform feedback operations

gl:resumeTransformFeedback resumes transform feedback operations on the currently active transform feedback object. When transform feedback operations are paused, transform feedback is still considered active and changing most transform feedback state related to the object results in an error. However, a new transform feedback object may be bound while transform feedback is paused.

See external documentation.

drawTransformFeedback(Mode, Id) -> ok

Types

Mode = enum()

Id = integer()

Render primitives using a count derived from a transform feedback object

gl:drawTransformFeedback draws primitives of a type specified by Mode using a count retrieved from the transform feedback specified by Id . Calling gl:drawTransformFeedback is equivalent to calling gl:drawArrays/3 with Mode as specified, First set to zero, and Count set to the number of vertices captured on vertex stream zero the last time transform feedback was active on the transform feedback object named by Id .

See external documentation.

drawTransformFeedbackStream(Mode, Id, Stream) -> ok

Types

Mode = enum()

Id = integer()

Stream = integer()

Render primitives using a count derived from a specifed stream of a transform feedback object

gl:drawTransformFeedbackStream draws primitives of a type specified by Mode using a count retrieved from the transform feedback stream specified by Stream of the transform feedback object specified by Id . Calling gl:drawTransformFeedbackStream is equivalent to calling gl:drawArrays/3 with Mode as specified, First set to zero, and Count set to the number of vertices captured on vertex stream Stream the last time transform feedback was active on the transform feedback object named by Id .

See external documentation.

beginQueryIndexed(Target, Index, Id) -> ok

Types

Target = enum()

Index = integer()

Id = integer()

glBeginQueryIndexe

See external documentation.

endQueryIndexed(Target, Index) -> ok

Types

Target = enum()

Index = integer()

Delimit the boundaries of a query object on an indexed target

gl:beginQueryIndexed and gl:endQueryIndexed/2 delimit the boundaries of a query object. Query must be a name previously returned from a call to gl:genQueries/1 . If a query object with name Id does not yet exist it is created with the type determined by Target . Target must be one of ?GL_SAMPLES_PASSED, ?GL_ANY_SAMPLES_PASSED , ?GL_PRIMITIVES_GENERATED, ?GL_TRANSFORM_FEEDBACK_PRIMITIVES_WRITTEN, or ?GL_TIME_ELAPSED . The behavior of the query object depends on its type and is as follows.

See external documentation.

getQueryIndexediv(Target, Index, Pname) -> integer()

Types

Target = enum()

Index = integer()

Pname = enum()

Return parameters of an indexed query object target

gl:getQueryIndexediv returns in Params a selected parameter of the indexed query object target specified by Target and Index . Index specifies the index of the query object target and must be between zero and a target-specific maxiumum.

See external documentation.

releaseShaderCompiler() -> ok

Release resources consumed by the implementation's shader compiler

gl:releaseShaderCompiler provides a hint to the implementation that it may free internal resources associated with its shader compiler. gl:compileShader/1 may subsequently be called and the implementation may at that time reallocate resources previously freed by the call to gl:releaseShaderCompiler.

See external documentation.

shaderBinary(Shaders, Binaryformat, Binary) -> ok

Types

Shaders = [integer()]

Binaryformat = enum()

Binary = binary()

Load pre-compiled shader binaries

gl:shaderBinary loads pre-compiled shader binary code into the Count shader objects whose handles are given in Shaders . Binary points to Length bytes of binary shader code stored in client memory. BinaryFormat specifies the format of the pre-compiled code.

See external documentation.

getShaderPrecisionFormat(Shadertype, Precisiontype) -> {Range::{integer(), integer()}, Precision::integer()}

Types

Shadertype = enum()

Precisiontype = enum()

Retrieve the range and precision for numeric formats supported by the shader compiler

gl:getShaderPrecisionFormat retrieves the numeric range and precision for the implementation's representation of quantities in different numeric formats in specified shader type. ShaderType specifies the type of shader for which the numeric precision and range is to be retrieved and must be one of ?GL_VERTEX_SHADER or ?GL_FRAGMENT_SHADER. PrecisionType specifies the numeric format to query and must be one of ?GL_LOW_FLOAT, ?GL_MEDIUM_FLOAT ?GL_HIGH_FLOAT, ?GL_LOW_INT, ?GL_MEDIUM_INT, or ?GL_HIGH_INT.

See external documentation.

depthRangef(N, F) -> ok

Types

N = clamp()

F = clamp()

See depthRange/2

clearDepthf(D) -> ok

Types

D = clamp()

glClearDepthf

See external documentation.

getProgramBinary(Program, BufSize) -> {BinaryFormat::enum(), Binary::binary()}

Pipeline = integer()

Pipeline = integer()

Pname = enum()

Retrieve properties of a program pipeline object

gl:getProgramPipelineiv retrieves the value of a property of the program pipeline object Pipeline . Pname specifies the name of the parameter whose value to retrieve. The value of the parameter is written to the variable whose address is given by Params .

See external documentation.

programUniform1i(Program, Location, V0) -> ok

Types

Program = integer()

Location = integer()

Program = integer()

Location = integer()

V0 = integer()

V1 = integer()

V2 = integer()

V3 = integer()

programUniform4iv(Program, Location, Value) -> ok

Types

Program = integer()

Location = integer()

Value = [{integer(), integer(), integer(), integer()}]

programUniform4f(Program, Location, V0, V1, V2, V3) -> ok

Types

Program = integer()

Location = integer()

V0 = float()

V1 = float()

V2 = float()

V3 = float()

programUniform4fv(Program, Location, Value) -> ok

Types

Program = integer()

Location = integer()

Value = [{float(), float(), float(), float()}]

programUniform4d(Program, Location, V0, V1, V2, V3) -> ok

Types

Program = integer()

Location = integer()

V0 = float()

V1 = float()

V2 = float()

V3 = float()

programUniform4dv(Program, Location, Value) -> ok

Types

Program = integer()

Location = integer()

Value = [{float(), float(), float(), float()}]

programUniform4ui(Program, Location, V0, V1, V2, V3) -> ok

Types

Program = integer()

Location = integer()

V0 = integer()

V1 = integer()

V2 = integer()

V3 = integer()