Modules

opengl.Camera Camera for in a 3D environment
opengl.Mesh Draw buffer of data representing geometry
opengl.Shader Load and manage OpenGL shader objects
opengl.ShaderAttribute An object for submitting buffers of data to a shader
opengl.sketch Handy sketching functions for OpenGL
opengl.Slab Load and manage OpenGL shader objects
opengl.Texture An object for manipulating buffers of data on the GPU

Functions

Accum(op, value) Operate on the accumulation buffer
AlphaFunc(func, ref) Specify the alpha test function
Begin(mode) Delimit the vertices of a primitive or a group of like primitives
BlendEquation(mode) Specify the equation used for both the RGB blend equation and the Alpha blend equation
BlendFunc(sfactor, dfactor) Specify pixel arithmetic
CallList(list) Execute a display list
Clear(mask) Clear buffers to preset values
ClearAccum(...) Specify clear values for the accumulation buffer
ClearColor(...) Specify clear values for the color buffers
ClearDepth(depth) Specify the clear value for the depth buffer
ClearIndex(c) Specify the clear value for the color index buffers
ClearStencil(c) Specify the clear value for the stencil buffer
ClipPlane(plane, equation) Specify a plane against which all geometry is clipped
closectx(ctx) Signal the module to destroy OpenGL resources
Color(...) Set the current color
ColorMask(...) Enable and disable writing of frame buffer color components
ColorMaterial(face, mode) Cause a material color to track the current color
CopyPixels(x, y, width, height, type) Copy pixels in the frame buffer
CopyTexImage(target, level, internalformat, x, y, width, [height], border) Copy pixels into a 1D or 2D texture image
CopyTexSubImage(target, level, xoffset, [yoffset], x, y, width, [height]) Copy a 1D or 2D texture subimage
CullFace(mode) Specify whether front- or back-facing facets can be culled
DeleteLists(list, range) Delete a contiguous group of display lists
DepthFunc(func) Specify the value used for depth buffer comparisons
DepthMask(flag) Enable or disable writing into the depth buffer
DepthRange(near, far) Specify mapping of depth values from normalized device coordinates to window coordinates
Disable(cap) Disable server-side GL capabilities
DrawBuffer(mode) Specify which color buffers are to be drawn into
EdgeFlag(flag) Flag edges as either boundary or nonboundary
Enable(cap) Enable server-side GL capabilities
End() Delimit the vertices of a primitive or a group of like primitives
EndList() End the creation or replacement of a display list
Finish() Block until all GL execution is complete
Flush() Force execution of GL commands in finite time
Fog(pname, ...) Specify fog parameters
FrontFace(mode) Define front- and back-facing polygons
Frustum(left, right, bottom, top, near, far) Multiply the current matrix by a perspective matrix
GenLists(range) Generate a contiguous set of empty display lists
Get(pname) Return the value or values of a selected parameter
GetClipPlane(plane) Return the coefficients of the specified clipping plane
GetError() Return error information
GetLight(light, pname) Return light source parameter values
GetMaterial(target, pname) Return material parameters
GetString(name) Return a string describing the current GL connection
GetTexEnv(target, pname) Return texture environment parameters
GetTexGen(coord, pname) Return texture coordinate generation parameters
GetTexLevelParameter(target, level, pname) Return texture parameter values for a specific level of detail
GetTexParameter(target, pname) Return texture parameter values
Hint(target, mode) Specify implementation-specific hints
Index(c) Set the current color index
IndexMask(mask) Control the writing of individual bits in the color index buffers
initctx(ctx) Signal the module to initialize OpenGL resources
InitNames() Initialize the name stack
IsEnabled(cap) Test whether a capability is enabled
IsList(list) Determine if a name corresponds to a display list
IsTexture(texture) Determine if a name corresponds to a texture
Light(light, pname, params) Set light source parameters
LightModel(pname, params) Set the lighting model parameters
LineStipple(factor, pattern) Specify the line stipple pattern
LineWidth(width) Specify the width of rasterized lines
ListBase(base) Set the display-list base for glCallLists
LoadIdentity() Replace the current matrix with the identity matrix
LoadMatrix(m) Replace the current matrix with the specified matrix
LoadName(name) Load a name onto the name stack
LogicOp(opcode) Specify a logical pixel operation for color index rendering
Material(face, pname, params) Specify material parameters for the lighting model
MatrixMode(mode) Specify which matrix is the current matrix
MultMatrix(m) Multiply the current matrix with the specified matrix
NewList(list, mode) Create or replace a display list
Normal(...) Set the current normal vector
Ortho(left, right, bottom, top, near, far) Multiply the current matrix with an orthographic matrix
PassThrough(token) Place a marker in the feedback buffer
PixelStore(pname, param) Set pixel storage modes
PixelTransfer(pname, param) Set pixel transfer modes
PixelZoom(xfactor, yfactor) Specify the pixel zoom factors
PointSize(size) Specify the diameter of rasterized points
PolygonMode(face, mode) Select a polygon rasterization mode
PolygonOffset(factor, units) Set the scale and units used to calculate depth values
PopAttrib() Pop the server attribute stack
PopClientAttrib() Pop the client attribute stack
PopMatrix() Pop the current matrix stack
PopName() Pop the name stack
PushAttrib(mask) Push the server attribute stack
PushClientAttrib() Push the client attribute stack
PushMatrix() Push the current matrix stack
PushName(name) Push the name stack
RasterPos(..) Specify the raster position for pixel operations
ReadBuffer(mode) Select a color buffer source for pixels
Rect(...) Draw a rectangle
RenderMode(mode) Set rasterization mode
Rotate(...) Multiply the current matrix by a rotation matrix
Scale(...) Multiply the current matrix by a general scaling matrix
Scissor(x, y, width, height) Define the scissor box
ShadeModel(mode) Select flat or smooth shading
StencilFunc(func, ref, mask) Set front and back function and reference value for stencil testing
StencilMask(mask) Control the front and back writing of individual bits in the stencil planes
StencilOp(sfail, dpfail, dppass) Set front and back stencil test actions
TexCoord(..) Set the current texture coordinates
TexEnv(target, pname, param) Set texture environment parameters
TexGen(coord, pname, param) Control the generation of texture coordinates
TexParameter(target, pname, param) Set texture parameters
Translate(...) Multiply the current matrix by a translation matrix
Vertex(..) Specify a vertex
Viewport(x, y, width, height) Set the viewport

Functions

Accum(op, value)

OpenGL Documentation: glAccum

Parameters:

op Specifies the accumulation buffer operation. Symbolic constants GL_ACCUM, GL_LOAD, GL_ADD, GL_MULT, and GL_RETURN are accepted.
value Specifies a floating-point value used in the accumulation buffer operation. op determines how value is used.
AlphaFunc(func, ref)

OpenGL Documentation: glAlphaFunc

Parameters:

func Specifies the alpha comparison function. Symbolic constants GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL, GL_GREATER, GL_NOTEQUAL, GL_GEQUAL, and GL_ALWAYS are accepted. The initial value is GL_ALWAYS
ref Specifies the reference value that incoming alpha values are compared to. This value is clamped to the range 0 1 , where 0 represents the lowest possible alpha value and 1 the highest possible value. The initial reference value is 0
Begin(mode)

OpenGL Documentation: glBegin

Parameters:

mode Specifies the primitive or primitives that will be created from vertices presented between glBegin and the subsequent glEnd. Ten symbolic constants are accepted: GL_POINTS, GL_LINES, GL_LINE_STRIP, GL_LINE_LOOP, GL_TRIANGLES, GL_TRIANGLE_STRIP, GL_TRIANGLE_FAN, GL_QUADS, GL_QUAD_STRIP, and GL_POLYGON.
BlendEquation(mode)

OpenGL Documentation: glBlendEquation

Parameters:

mode Specifies how source and destination colors are combined. It must be GL_FUNC_ADD, GL_FUNC_SUBTRACT, GL_FUNC_REVERSE_SUBTRACT, GL_MIN, GL_MAX.
BlendFunc(sfactor, dfactor)

OpenGL Documentation: glBlendFunc

Parameters:

sfactor Specifies how the red, green, blue, and alpha source blending factors are computed. The following symbolic constants are accepted: GL_ZERO, GL_ONE, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, GL_DST_COLOR, GL_ONE_MINUS_DST_COLOR, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, GL_DST_ALPHA, GL_ONE_MINUS_DST_ALPHA, GL_CONSTANT_COLOR, GL_ONE_MINUS_CONSTANT_COLOR, GL_CONSTANT_ALPHA, GL_ONE_MINUS_CONSTANT_ALPHA, and GL_SRC_ALPHA_SATURATE. The initial value is GL_ONE.
dfactor Specifies how the red, green, blue, and alpha destination blending factors are computed. The same constants are accepted as for sfactor.
CallList(list)

OpenGL Documentation: glCallList

Parameters:

list Specifies the integer name of the display list to be executed.
Clear(mask)

OpenGL Documentation: glClear

Parameters:

mask Bitwise OR of masks that indicate the buffers to be cleared. The four masks are GL_COLOR_BUFFER_BIT, GL_DEPTH_BUFFER_BIT, GL_ACCUM_BUFFER_BIT, and GL_STENCIL_BUFFER_BIT.
ClearAccum(...)

OpenGL Documentation: glClearAccum

Parameters:

... Either a 4 numbers or a table specifying the red, green, blue, and alpha values used when the accumulation buffer is cleared. The initial values are all 0.
ClearColor(...)

OpenGL Documentation: glClearColor

Parameters:

... Either a 4 numbers or a table specifying the red, green, blue, and alpha values used when the color buffers are cleared. The initial values are all 0.
ClearDepth(depth)

OpenGL Documentation: glClearDepth

Parameters:

depth Specifies the depth value used when the depth buffer is cleared. The initial value is 1.
ClearIndex(c)

OpenGL Documentation: glClearIndex

Parameters:

c Specifies the index used when the color index buffers are cleared. The initial value is 0.
ClearStencil(c)

OpenGL Documentation: glClearStencil

Parameters:

c Specifies the index used when the stencil buffer is cleared. The initial value is 0.
ClipPlane(plane, equation)

OpenGL Documentation: glClipPlane

Parameters:

plane Specifies which clipping plane is being positioned. Symbolic names of the form GL_CLIP_PLANEi, where i is an integer between 0 and GL_MAX_CLIP_PLANES -1 , are accepted.
equation Specifies the address of an array of four double-precision floating-point values. These values are interpreted as a plane equation.
closectx(ctx)

closectx should only be called when a valid OpenGL context is present. Typically, it is called right before a context is destroyed. It should only be called once on context destruction.

Parameters:

ctx The name of the context.

See Also:

Color(...)

OpenGL Documentation: glColor

Parameters:

... Specify either 3 or 4 numbers or a table for new red, green, blue and [alpha] values for the current color. The default value is (0, 0, 0, 1).
ColorMask(...)

OpenGL Documentation: glColorMask

Parameters:

... Either 4 numbers or a table specifying whether red, green, blue, and alpha can or cannot be written into the frame buffer. The initial values are all GL_TRUE, indicating that the color components can be written.
ColorMaterial(face, mode)

OpenGL Documentation: glColorMaterial

Parameters:

face Specifies whether front, back, or both front and back material parameters should track the current color. Accepted values are GL_FRONT, GL_BACK, and GL_FRONT_AND_BACK. The initial value is GL_FRONT_AND_BACK.
mode Specifies which of several material parameters track the current color. Accepted values are GL_EMISSION, GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, and GL_AMBIENT_AND_DIFFUSE. The initial value is GL_AMBIENT_AND_DIFFUSE.
CopyPixels(x, y, width, height, type)

OpenGL Documentation: glCopyPixels

Parameters:

x Specify the x window coordinate of the lower left corner of the rectangular region of pixels to be copied.
y Specify the y window coordinate of the lower left corner of the rectangular region of pixels to be copied.
width Specify the horizontal dimensions of the rectangular region of pixels to be copied. Both must be nonnegative.
height Specify the vertical dimensions of the rectangular region of pixels to be copied. Both must be nonnegative.
type Specifies whether color values, depth values, or stencil values are to be copied. Symbolic constants GL_COLOR, GL_DEPTH, and GL_STENCIL are accepted.
CopyTexImage(target, level, internalformat, x, y, width, [height], border)

If no height argument is given, glCopyTexImage1D will be used, otherwise, glCopyTexImage2D be used. Example usage:

  1D case: gl.CopyTexImage(GL.TEXTURE_1D, 0, GL.RGBA, 0, 0, 128, 0)
  2D case: gl.CopyTexImage(GL.TEXTURE_2D, 0, GL.RGBA, 0, 0, 128, 128, 0)
 

OpenGL Documentation: glCopyTexImage1D, glCopyTexImage2D

Parameters:

target Only relevant in the 2D case. Specifies the target texture. Must be GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, or GL_TEXTURE_CUBE_MAP_NEGATIVE_Z.
level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
internalformat Specifies the internal format of the texture. See OpenGL documentation for accepted values.
x Specify the x window coordinate of the left corner of the row of pixels to be copied.
y Specify the y window coordinate of the left corner of the row of pixels to be copied.
width Specifies the width of the texture image. Must be 0 or 2 n + 2 border for some integer n.
[height] Specifies the height of the texture image. Must be 0 or 2 m + 2 border for some integer m. The height of the texture image in the 1D case is 1.
border Specifies the width of the border. Must be either 0 or 1.
CopyTexSubImage(target, level, xoffset, [yoffset], x, y, width, [height])

If no yoffset or height argument is given, glCopyTexSubImage1D will be used, otherwise, glCopyTexSubImage2D be used. Example usage:

  1D case: gl.glCopyTexSubImage(GL.TEXTURE_1D, 0, 32, 0, 0, 64)
  2D case: gl.glCopyTexSubImage(GL.TEXTURE_2D, 0, 16, 24, 0, 0, 128, 128)
 

OpenGL Documentation: glCopyTexSubImage1D, glCopyTexSubImage2D

Parameters:

target Only relevant in the 2D case. Specifies the target texture. Must be GL_TEXTURE_2D, GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, or GL_TEXTURE_CUBE_MAP_NEGATIVE_Z.
level Specifies the level-of-detail number. Level 0 is the base image level. Level n is the nth mipmap reduction image.
xoffset Specifies a texel offset in the x direction within the texture array..
[yoffset] Specifies a texel offset in the y direction within the texture array..
x Specify the x window coordinate of the left corner of the row of pixels to be copied.
y Specify the y window coordinate of the left corner of the row of pixels to be copied.
width Specifies the width of the texture subimage.
[height] Specifies the height of the texture subimage.
CullFace(mode)

OpenGL Documentation: glCullFace

Parameters:

mode Specifies whether front- or back-facing facets are candidates for culling. Symbolic constants GL_FRONT, GL_BACK, and GL_FRONT_AND_BACK are accepted. The initial value is GL_BACK.
DeleteLists(list, range)

OpenGL Documentation: glDeleteLists

Parameters:

list Specifies the integer name of the first display list to delete.
range Specifies the number of display lists to delete.
DepthFunc(func)

OpenGL Documentation: glDepthFunc

Parameters:

func Specifies the depth comparison function. Symbolic constants GL_NEVER, GL_LESS, GL_EQUAL, GL_LEQUAL, GL_GREATER, GL_NOTEQUAL, GL_GEQUAL, and GL_ALWAYS are accepted. The initial value is GL_LESS.
DepthMask(flag)

OpenGL Documentation: glDepthMask

Parameters:

flag Specifies whether the depth buffer is enabled for writing. If flag is GL_FALSE, depth buffer writing is disabled. Otherwise, it is enabled. Initially, depth buffer writing is enabled.
DepthRange(near, far)

OpenGL Documentation: glDepthRange

Parameters:

near Specifies the mapping of the near clipping plane to window coordinates. The initial value is 0.
far Specifies the mapping of the far clipping plane to window coordinates. The initial value is 1.
Disable(cap)

OpenGL Documentation: glDisable

Parameters:

cap Specifies a symbolic constant indicating a GL capability.
DrawBuffer(mode)

OpenGL Documentation: glDrawBuffer

Parameters:

mode Specifies up to four color buffers to be drawn into. Symbolic constants GL_NONE, GL_FRONT_LEFT, GL_FRONT_RIGHT, GL_BACK_LEFT, GL_BACK_RIGHT, GL_FRONT, GL_BACK, GL_LEFT, GL_RIGHT, GL_FRONT_AND_BACK, and GL_AUXi, where i is between 0 and the value of GL_AUX_BUFFERS minus 1, are accepted. (GL_AUX_BUFFERS is not the upper limit; use glGet to query the number of available aux buffers.) The initial value is GL_FRONT for single-buffered contexts, and GL_BACK for double-buffered contexts
EdgeFlag(flag)

OpenGL Documentation: glEdgeFlag

Parameters:

flag Specifies the current edge flag value, either GL_TRUE or GL_FALSE. The initial value is GL_TRUE.
Enable(cap)

OpenGL Documentation: glEnable

Parameters:

cap Specifies a symbolic constant indicating a GL capability.
End()

OpenGL Documentation: glEnd

EndList()

OpenGL Documentation: glEndList

Finish()

OpenGL Documentation: glFinish

Flush()

OpenGL Documentation: glFlush

Fog(pname, ...)

OpenGL Documentation: glFog

Parameters:

pname Specifies a single-valued fog parameter. GL_FOG_MODE, GL_FOG_DENSITY, GL_FOG_START, GL_FOG_END, GL_FOG_INDEX, and GL_FOG_COORD_SRC are accepted.
... Specifies the value that pname will be set to.
FrontFace(mode)

OpenGL Documentation: glFrontFace

Parameters:

mode Specifies the orientation of front-facing polygons. GL_CW and GL_CCW are accepted. The initial value is GL_CCW.
Frustum(left, right, bottom, top, near, far)

OpenGL Documentation: glFrustum

Parameters:

left Specify the coordinates for the left vertical clipping plane.
right Specify the coordinates for the right vertical clipping plane.
bottom Specify the coordinates for the top horizontal clipping plane.
top Specify the coordinates for the bottom horizontal clipping plane.
near Specify the distance to the near depth clipping plane. Must be positive.
far Specify the distance to the far depth clipping plane. Must be positive.
GenLists(range)

OpenGL Documentation: glGenLists

Parameters:

range Specifies the number of contiguous empty display lists to be generated.
Get(pname)

OpenGL Documentation: glGet

Parameters:

pname Specifies the parameter value to be returned. See documentation for the list of accepted values.

Return:

  • The parameter value. Values are returned unpacked.
GetClipPlane(plane)

OpenGL Documentation: glGetClipPlane

Parameters:

plane Specifies a clipping plane. The number of clipping planes depends on the implementation, but at least six clipping planes are supported. They are identified by symbolic names of the form GL_CLIP_PLANE i where i ranges from 0 to the value of GL_MAX_CLIP_PLANES - 1.

Return:

  • The four coefficients of the plane equation for plane.
GetError()

OpenGL Documentation: glGetError

Return:

  • The value of the error flag
GetLight(light, pname)

OpenGL Documentation: glGetLight

Parameters:

light Specifies a light source. The number of possible lights depends on the implementation, but at least eight lights are supported. They are identified by symbolic names of the form GL_LIGHTi where i ranges from 0 to the value of GL_MAX_LIGHTS - 1.
pname Specifies a light source parameter for light. Accepted symbolic names are GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, GL_POSITION, GL_SPOT_DIRECTION, GL_SPOT_EXPONENT, GL_SPOT_CUTOFF, GL_CONSTANT_ATTENUATION, GL_LINEAR_ATTENUATION, and GL_QUADRATIC_ATTENUATION.

Return:

  • The requested parameter values as a table.
GetMaterial(target, pname)

OpenGL Documentation: glGetMaterial

Parameters:

target Specifies which of the two materials is being queried. GL_FRONT or GL_BACK are accepted, representing the front and back materials, respectively.
pname Specifies the material parameter to return. GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, GL_EMISSION, GL_SHININESS, and GL_COLOR_INDEXES are accepted.

Return:

  • The requested data values as a table.
GetString(name)

OpenGL Documentation: glGetString

Parameters:

name Specifies a symbolic constant, one of GL_VENDOR, GL_RENDERER, GL_VERSION, GL_SHADING_LANGUAGE_VERSION, or GL_EXTENSIONS.

Return:

  • The string result
GetTexEnv(target, pname)

OpenGL Documentation: glGetTexEnv

Parameters:

target Specifies a texture environment. May be GL_TEXTURE_ENV, GL_TEXTURE_FILTER_CONTROL, or GL_POINT_SPRITE.
pname Specifies the symbolic name of a texture environment parameter. Accepted values are GL_TEXTURE_ENV_MODE, GL_TEXTURE_ENV_COLOR, GL_TEXTURE_LOD_BIAS, GL_COMBINE_RGB, GL_COMBINE_ALPHA, GL_SRC0_RGB, GL_SRC1_RGB, GL_SRC2_RGB, GL_SRC0_ALPHA, GL_SRC1_ALPHA, GL_SRC2_ALPHA, GL_OPERAND0_RGB, GL_OPERAND1_RGB, GL_OPERAND2_RGB, GL_OPERAND0_ALPHA, GL_OPERAND1_ALPHA, GL_OPERAND2_ALPHA, GL_RGB_SCALE, GL_ALPHA_SCALE, or GL_COORD_REPLACE.

Return:

  • The requested data values as a table.
GetTexGen(coord, pname)

OpenGL Documentation: glGetTexGen

Parameters:

coord Specifies a texture coordinate. Must be GL_S, GL_T, GL_R, or GL_Q.
pname Specifies the symbolic name of the value(s) to be returned. Must be either GL_TEXTURE_GEN_MODE or the name of one of the texture generation plane equations: GL_OBJECT_PLANE or GL_EYE_PLANE.

Return:

  • The requested data values as a table.
GetTexLevelParameter(target, level, pname)

OpenGL Documentation: glGetTexLevelParameter

Parameters:

target Specifies the symbolic name of the target texture, either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, GL_PROXY_TEXTURE_1D, GL_PROXY_TEXTURE_2D, GL_PROXY_TEXTURE_3D, GL_TEXTURE_CUBE_MAP_POSITIVE_X, GL_TEXTURE_CUBE_MAP_NEGATIVE_X, GL_TEXTURE_CUBE_MAP_POSITIVE_Y, GL_TEXTURE_CUBE_MAP_NEGATIVE_Y, GL_TEXTURE_CUBE_MAP_POSITIVE_Z, GL_TEXTURE_CUBE_MAP_NEGATIVE_Z, or GL_PROXY_TEXTURE_CUBE_MAP.
level Specifies the level-of-detail number of the desired image. Level 0 is the base image level. Level n is the nth mipmap reduction image.
pname Specifies the symbolic name of a texture parameter. GL_TEXTURE_WIDTH, GL_TEXTURE_HEIGHT, GL_TEXTURE_DEPTH, GL_TEXTURE_INTERNAL_FORMAT, GL_TEXTURE_BORDER, GL_TEXTURE_RED_SIZE, GL_TEXTURE_GREEN_SIZE, GL_TEXTURE_BLUE_SIZE, GL_TEXTURE_ALPHA_SIZE, GL_TEXTURE_LUMINANCE_SIZE, GL_TEXTURE_INTENSITY_SIZE, GL_TEXTURE_DEPTH_SIZE, GL_TEXTURE_COMPRESSED, and GL_TEXTURE_COMPRESSED_IMAGE_SIZE are accepted.

Return:

  • The requested data values unpacked.
GetTexParameter(target, pname)

OpenGL Documentation: glGetTexParameter

Parameters:

target Specifies the symbolic name of the target texture. GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, and GL_TEXTURE_CUBE_MAP are accepted.
pname Specifies the symbolic name of a texture parameter. GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MIN_LOD, GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, GL_TEXTURE_MAX_LEVEL, GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, GL_TEXTURE_WRAP_R, GL_TEXTURE_BORDER_COLOR, GL_TEXTURE_PRIORITY, GL_TEXTURE_RESIDENT, GL_TEXTURE_COMPARE_MODE, GL_TEXTURE_COMPARE_FUNC, GL_DEPTH_TEXTURE_MODE, and GL_GENERATE_MIPMAP are accepted.

Return:

  • The requested data values as a table.
Hint(target, mode)

OpenGL Documentation: glHint

Parameters:

target Specifies a symbolic constant indicating the behavior to be controlled. GL_FOG_HINT, GL_GENERATE_MIPMAP_HINT, GL_LINE_SMOOTH_HINT, GL_PERSPECTIVE_CORRECTION_HINT, GL_POINT_SMOOTH_HINT, GL_POLYGON_SMOOTH_HINT, GL_TEXTURE_COMPRESSION_HINT, and GL_FRAGMENT_SHADER_DERIVATIVE_HINT are accepted.
mode Specifies a symbolic constant indicating the desired behavior. GL_FASTEST, GL_NICEST, and GL_DONT_CARE are accepted.
Index(c)

OpenGL Documentation: glIndex

Parameters:

c Specifies the new value for the current color index.
IndexMask(mask)

OpenGL Documentation: glIndexMask

Parameters:

mask Specifies a bit mask to enable and disable the writing of individual bits in the color index buffers. Initially, the mask is all 1's.
initctx(ctx)

initctx should only be called when a valid OpenGL context is present. Otherwise, it will likely cause an invalid access error and crash. Typically, it is called before any frames are drawn and the context has just been initialized. It should only be called once on context creation.

Parameters:

ctx The name of the context.

See Also:

InitNames()

OpenGL Documentation: glInitNames

IsEnabled(cap)

OpenGL Documentation: glIsEnabled

Parameters:

cap Specifies a symbolic constant indicating a GL capability.

Return:

  • Returns GL_TRUE if cap is an enabled capability and returns GL_FALSE otherwise
IsList(list)

OpenGL Documentation: glIsList

Parameters:

list Specifies a symbolic constant indicating a GL capability.

Return:

  • Returns GL_TRUE if list is the name of a display list and returns GL_FALSE if it is not, or if an error occurs.
IsTexture(texture)

OpenGL Documentation: glIsTexture

Parameters:

texture Specifies a value that may be the name of a texture.

Return:

  • Returns GL_TRUE if texture is currently the name of a texture. If texture is zero, or is a non-zero value that is not currently the name of a texture, or if an error occurs, glIsTexture returns GL_FALSE.
Light(light, pname, params)

OpenGL Documentation: glLight

Parameters:

light Specifies a light. The number of lights depends on the implementation, but at least eight lights are supported. They are identified by symbolic names of the form GL_LIGHTi, where i ranges from 0 to the value of GL_MAX_LIGHTS - 1.
pname Specifies a light source parameter for light. GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, GL_POSITION, GL_SPOT_CUTOFF, GL_SPOT_DIRECTION, GL_SPOT_EXPONENT, GL_CONSTANT_ATTENUATION, GL_LINEAR_ATTENUATION, and GL_QUADRATIC_ATTENUATION are accepted.
params Specifies the value that parameter pname of light source light will be set to.
LightModel(pname, params)

OpenGL Documentation: glLightModel

Parameters:

pname Specifies a single-valued lighting model parameter. GL_LIGHT_MODEL_LOCAL_VIEWER, GL_LIGHT_MODEL_COLOR_CONTROL, and GL_LIGHT_MODEL_TWO_SIDE are accepted.
params Specifies the value that param will be set to.
LineStipple(factor, pattern)

OpenGL Documentation: glLineStipple

Parameters:

factor Specifies a multiplier for each bit in the line stipple pattern. If factor is 3, for example, each bit in the pattern is used three times before the next bit in the pattern is used. factor is clamped to the range [1, 256] and defaults to 1.
pattern Specifies a 16-bit integer whose bit pattern determines which fragments of a line will be drawn when the line is rasterized. Bit zero is used first; the default pattern is all 1's.
LineWidth(width)

OpenGL Documentation: glLineWidth

Parameters:

width Specifies the width of rasterized lines. The initial value is 1.
ListBase(base)

OpenGL Documentation: glListBase

Parameters:

base Specifies an integer offset that will be added to glCallLists offsets to generate display-list names. The initial value is 0.
LoadIdentity()

OpenGL Documentation: glLoadIdentity

LoadMatrix(m)

OpenGL Documentation: glLoadMatrix

Parameters:

m Specifies 16 consecutive values, which are used as the elements of a 4×4 column-major matrix.
LoadName(name)

OpenGL Documentation: glLoadName

Parameters:

name Specifies a name that will replace the top value on the name stack.
LogicOp(opcode)

OpenGL Documentation: glLogicOp

Parameters:

opcode Specifies a symbolic constant that selects a logical operation. The following symbols are accepted: GL_CLEAR, GL_SET, GL_COPY, GL_COPY_INVERTED, GL_NOOP, GL_INVERT, GL_AND, GL_NAND, GL_OR, GL_NOR, GL_XOR, GL_EQUIV, GL_AND_REVERSE, GL_AND_INVERTED, GL_OR_REVERSE, and GL_OR_INVERTED. The initial value is GL_COPY.
Material(face, pname, params)

OpenGL Documentation: glMaterial

Parameters:

face Specifies which face or faces are being updated. Must be one of GL_FRONT, GL_BACK, or GL_FRONT_AND_BACK.
pname Specifies the material parameter of the face or faces that is being updated. Must be one of GL_AMBIENT, GL_DIFFUSE, GL_SPECULAR, GL_EMISSION, GL_SHININESS, GL_AMBIENT_AND_DIFFUSE, or GL_COLOR_INDEXES.
params Specifies a pointer to the value or values that pname will be set to.
MatrixMode(mode)

OpenGL Documentation: glMatrixMode

Parameters:

mode Specifies which matrix stack is the target for subsequent matrix operations. Three values are accepted: GL_MODELVIEW, GL_PROJECTION, and GL_TEXTURE. The initial value is GL_MODELVIEW. Additionally, if the ARB_imaging extension is supported, GL_COLOR is also accepted.
MultMatrix(m)

OpenGL Documentation: glMultMatrix

Parameters:

m Specifies 16 consecutive values, which are used as the elements of a 4×4 column-major matrix.
NewList(list, mode)

OpenGL Documentation: glNewList

Parameters:

list Specifies the display-list name.
mode Specifies the compilation mode, which can be GL_COMPILE or GL_COMPILE_AND_EXECUTE.
Normal(...)

OpenGL Documentation: glNormal

Parameters:

... Either a 3 numbers or a table specifying the x, y, and z coordinates of the new current normal. The initial value of the current normal is the unit vector, (0, 0, 1).
Ortho(left, right, bottom, top, near, far)

OpenGL Documentation: glOrtho

Parameters:

left Specify the coordinates for the left vertical clipping plane.
right Specify the coordinates for the right vertical clipping plane.
bottom Specify the coordinates for the bottom horizontal clipping plane.
top Specify the coordinates for the top horizontal clipping plane.
near Specify the distances to the nearer depth clipping plane. This value is negative if the plane is to be behind the viewer.
far Specify the distances to the farther depth clipping plane. This value is negative if the plane is to be behind the viewer.
PassThrough(token)

OpenGL Documentation: glPassThrough

Parameters:

token Specifies a marker value to be placed in the feedback buffer following a GL_PASS_THROUGH_TOKEN.
PixelStore(pname, param)

OpenGL Documentation: glPixelStore

Parameters:

pname Specifies the symbolic name of the parameter to be set. Six values affect the packing of pixel data into memory: GL_PACK_SWAP_BYTES, GL_PACK_LSB_FIRST, GL_PACK_ROW_LENGTH, GL_PACK_IMAGE_HEIGHT, GL_PACK_SKIP_PIXELS, GL_PACK_SKIP_ROWS, GL_PACK_SKIP_IMAGES, and GL_PACK_ALIGNMENT. Six more affect the unpacking of pixel data from memory: GL_UNPACK_SWAP_BYTES, GL_UNPACK_LSB_FIRST, GL_UNPACK_ROW_LENGTH, GL_UNPACK_IMAGE_HEIGHT, GL_UNPACK_SKIP_PIXELS, GL_UNPACK_SKIP_ROWS, GL_UNPACK_SKIP_IMAGES, and GL_UNPACK_ALIGNMENT.
param Specifies the value that pname is set to.
PixelTransfer(pname, param)

OpenGL Documentation: glPixelTransfer

Parameters:

pname Specifies the symbolic name of the pixel transfer parameter to be set. Must be one of the following: GL_MAP_COLOR, GL_MAP_STENCIL, GL_INDEX_SHIFT, GL_INDEX_OFFSET, GL_RED_SCALE, GL_RED_BIAS, GL_GREEN_SCALE, GL_GREEN_BIAS, GL_BLUE_SCALE, GL_BLUE_BIAS, GL_ALPHA_SCALE, GL_ALPHA_BIAS, GL_DEPTH_SCALE, or GL_DEPTH_BIAS.
param Specifies the value that pname is set to.
PixelZoom(xfactor, yfactor)

OpenGL Documentation: glPixelZoom

Parameters:

xfactor Specify the x zoom factor for pixel write operations.
yfactor Specify the y zoom factor for pixel write operations.
PointSize(size)

OpenGL Documentation: glPointSize

Parameters:

size Specifies the diameter of rasterized points. The initial value is 1.
PolygonMode(face, mode)

OpenGL Documentation: glPolygonMode

Parameters:

face Specifies the polygons that mode applies to. Must be GL_FRONT for front-facing polygons, GL_BACK for back-facing polygons, or GL_FRONT_AND_BACK for front- and back-facing polygons.
mode Specifies how polygons will be rasterized. Accepted values are GL_POINT, GL_LINE, and GL_FILL. The initial value is GL_FILL for both front- and back-facing polygons.
PolygonOffset(factor, units)

OpenGL Documentation: glPolygonOffset

Parameters:

factor Specifies a scale factor that is used to create a variable depth offset for each polygon. The initial value is 0.
units Is multiplied by an implementation-specific value to create a constant depth offset. The initial value is 0.
PopAttrib()

OpenGL Documentation: glPopAttrib

PopClientAttrib()

OpenGL Documentation: glPopClientAttrib

PopMatrix()

OpenGL Documentation: glPopMatrix

PopName()

OpenGL Documentation: glPopName

PushAttrib(mask)

OpenGL Documentation: glPushAttrib

Parameters:

mask Specifies a mask that indicates which attributes to save.
PushClientAttrib()

OpenGL Documentation: glPushClientAttrib

PushMatrix()

OpenGL Documentation: glPushMatrix

PushName(name)

OpenGL Documentation: glPushName

Parameters:

name Specifies a name that will be pushed onto the name stack.
RasterPos(..)

OpenGL Documentation: glRasterPos

Parameters:

.. Specifies an array or list of values of two, three, or four elements, specifying x, y, z, and w coordinates, respectively.
ReadBuffer(mode)

OpenGL Documentation: glReadBuffer

Parameters:

mode Specifies a color buffer. Accepted values are GL_FRONT_LEFT, GL_FRONT_RIGHT, GL_BACK_LEFT, GL_BACK_RIGHT, GL_FRONT, GL_BACK, GL_LEFT, GL_RIGHT, and GL_AUXi, where i is between 0 and the value of GL_AUX_BUFFERS minus 1.
Rect(...)

OpenGL Documentation: glRect

Parameters:

... Specify the vertices of a rectangle as an array or list of 4 values.
RenderMode(mode)

OpenGL Documentation: glRenderMode

Parameters:

mode Specifies the rasterization mode. Three values are accepted: GL_RENDER, GL_SELECT, and GL_FEEDBACK. The initial value is GL_RENDER.
Rotate(...)

OpenGL Documentation: glRotate

Parameters:

... Specify an array or list of 4 values with the order being the angle of rotation in degrees and then the the x, y, and z coordinates of a vector, respectively
Scale(...)

OpenGL Documentation: glScale

Parameters:

... Specify an array or list of 3 values of scale factors along the x, y, and z axes, respectively
Scissor(x, y, width, height)

OpenGL Documentation: glScissor

Parameters:

x Specify the x-coordinate of the lower left corner of the scissor box.
y Specify the y-coordinate of the lower left corner of the scissor box.
width Specify the width of the scissor box.
height Specify the height of the scissor box.
ShadeModel(mode)

OpenGL Documentation: glShadeModel

Parameters:

mode Specifies a symbolic value representing a shading technique. Accepted values are GL_FLAT and GL_SMOOTH. The initial value is GL_SMOOTH.
StencilFunc(func, ref, mask)

OpenGL Documentation: glStencilFunc

Parameters:

func Specifies the test function. Eight symbolic constants are valid: GL_NEVER, GL_LESS, GL_LEQUAL, GL_GREATER, GL_GEQUAL, GL_EQUAL, GL_NOTEQUAL, and GL_ALWAYS. The initial value is GL_ALWAYS.
ref Specifies the reference value for the stencil test. ref is clamped to the range 0 2 n-1 , where n is the number of bitplanes in the stencil buffer. The initial value is 0.
mask Specifies a mask that is ANDed with both the reference value and the stored stencil value when the test is done. The initial value is all 1's.
StencilMask(mask)

OpenGL Documentation: glStencilMask

Parameters:

mask Specifies a bit mask to enable and disable writing of individual bits in the stencil planes. Initially, the mask is all 1's.
StencilOp(sfail, dpfail, dppass)

OpenGL Documentation: glStencilOp

Parameters:

sfail Specifies the action to take when the stencil test fails. Eight symbolic constants are accepted: GL_KEEP, GL_ZERO, GL_REPLACE, GL_INCR, GL_INCR_WRAP, GL_DECR, GL_DECR_WRAP, and GL_INVERT. The initial value is GL_KEEP.
dpfail Specifies the stencil action when the stencil test passes, but the depth test fails. dpfail accepts the same symbolic constants as sfail. The initial value is GL_KEEP.
dppass Specifies the stencil action when both the stencil test and the depth test pass, or when the stencil test passes and either there is no depth buffer or depth testing is not enabled. dppass accepts the same symbolic constants as sfail. The initial value is GL_KEEP.
TexCoord(..)

OpenGL Documentation: glTexCoord

Parameters:

.. Specifies an array or list of one, two, three, or four elements, which in turn specify the s, t, r, and q texture coordinates.
TexEnv(target, pname, param)

OpenGL Documentation: glTexEnv

Parameters:

target Specifies a texture environment. May be GL_TEXTURE_ENV, GL_TEXTURE_FILTER_CONTROL or GL_POINT_SPRITE.
pname Specifies the symbolic name of a single-valued texture environment parameter. May be either GL_TEXTURE_ENV_MODE, GL_TEXTURE_LOD_BIAS, GL_COMBINE_RGB, GL_COMBINE_ALPHA, GL_SRC0_RGB, GL_SRC1_RGB, GL_SRC2_RGB, GL_SRC0_ALPHA, GL_SRC1_ALPHA, GL_SRC2_ALPHA, GL_OPERAND0_RGB, GL_OPERAND1_RGB, GL_OPERAND2_RGB, GL_OPERAND0_ALPHA, GL_OPERAND1_ALPHA, GL_OPERAND2_ALPHA, GL_RGB_SCALE, GL_ALPHA_SCALE, or GL_COORD_REPLACE.
param Specifies a single symbolic constant, one of GL_ADD, GL_ADD_SIGNED, GL_INTERPOLATE, GL_MODULATE, GL_DECAL, GL_BLEND, GL_REPLACE, GL_SUBTRACT, GL_COMBINE, GL_TEXTURE, GL_CONSTANT, GL_PRIMARY_COLOR, GL_PREVIOUS, GL_SRC_COLOR, GL_ONE_MINUS_SRC_COLOR, GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA, a single boolean value for the point sprite texture coordinate replacement, a single floating-point value for the texture level-of-detail bias, or 1.0, 2.0, or 4.0 when specifying the GL_RGB_SCALE or GL_ALPHA_SCALE.
TexGen(coord, pname, param)

OpenGL Documentation: glTexGen

Parameters:

coord Specifies a texture coordinate. Must be one of GL_S, GL_T, GL_R, or GL_Q.
pname Specifies the symbolic name of the texture-coordinate generation function. Must be GL_TEXTURE_GEN_MODE.
param Specifies a single-valued texture generation parameter, one of GL_OBJECT_LINEAR, GL_EYE_LINEAR, GL_SPHERE_MAP, GL_NORMAL_MAP, or GL_REFLECTION_MAP.
TexParameter(target, pname, param)

OpenGL Documentation: glTexParameter

Parameters:

target Specifies the target texture, which must be either GL_TEXTURE_1D, GL_TEXTURE_2D, GL_TEXTURE_3D, or GL_TEXTURE_CUBE_MAP.
pname Specifies the symbolic name of a single-valued texture parameter. pname can be one of the following: GL_TEXTURE_MIN_FILTER, GL_TEXTURE_MAG_FILTER, GL_TEXTURE_MIN_LOD, GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, GL_TEXTURE_MAX_LEVEL, GL_TEXTURE_WRAP_S, GL_TEXTURE_WRAP_T, GL_TEXTURE_WRAP_R, GL_TEXTURE_PRIORITY, GL_TEXTURE_COMPARE_MODE, GL_TEXTURE_COMPARE_FUNC, GL_DEPTH_TEXTURE_MODE, or GL_GENERATE_MIPMAP.
param Specifies the value of pname.
Translate(...)

OpenGL Documentation: glTranslate

Parameters:

... Specify an array or list of 3 values of translation vector
Vertex(..)

OpenGL Documentation: glVertex

Parameters:

.. Specifies an array or list of two, three, or four elements, which in turn specify the x, y, z, and w vertex coordinates.
Viewport(x, y, width, height)

OpenGL Documentation: glViewport

Parameters:

x Specify the x-coordinate of the lower left corner of the viewport rectangle.
y Specify the y-coordinate of the lower left corner of the viewport rectangle.
width Specify the width of the viewport rectangle.
height Specify the height of the viewport rectangle.