section 3G · Library functions 📚

G (continued)

• glXQueryExtension(3G)indicate whether the GLX extension is supported✨
• glXQueryExtensionsString(3G)return list of supported extensions✨
• glXQueryServerString(3G)return string describing the server✨
• glXQueryVersion(3G)return the version numbers of the GLX extension✨
• glXSwapBuffers(3G)exchange front and back buffers✨
• glXUseXFont(3G)create bitmap display lists from an X font✨
• glXWaitGL(3G)complete GL execution prior to subsequent X calls✨
• glXWaitX(3G)complete X execution prior to subsequent GL calls✨
• greaterThan(3G)perform a component-wise greater-than comparison of two vectors✨
• greaterThanEqual(3G)perform a component-wise greater-than-or-equal comparison of two vectors✨
• groupMemoryBarrier(3G)controls the ordering of memory transaction issued shader invocation relative to a work group✨

I

• imageAtomicAdd(3G)atomically add a value to an existing value in memory and return the original value✨
• imageAtomicAnd(3G)atomically compute the logical AND of a value with an existing value in memory, store that value and return the original value✨
• imageAtomicCompSwap(3G)atomically compares supplied data with that in memory and conditionally stores it to memory✨
• imageAtomicExchange(3G)atomically store supplied data into memory and return the original value from memory✨
• imageAtomicMax(3G)atomically compute the minimum of a value with an existing value in memory, store that value and return the original value✨
• imageAtomicMin(3G)atomically compute the minimum of a value with an existing value in memory, store that value and return the original value✨
• imageAtomicOr(3G)atomically compute the logical OR of a value with an existing value in memory, store that value and return the original value✨
• imageAtomicXor(3G)atomically compute the logical exclusive OR of a value with an existing value in memory, store that value and return the original value✨
• imageLoad(3G)load a single texel from an image✨
• imageSamples(3G)return the number of samples of an image✨
• imageSize(3G)retrieve the dimensions of an image✨
• imageStore(3G)write a single texel into an image✨
• intBitsToFloat,_uintBitsToFloat(3G)produce a floating point using an encoding supplied as an integer✨
• interpolateAtCentroid(3G)sample a varying at the centroid of a pixel✨
• interpolateAtOffset(3G)sample a varying at specified offset from the center of a pixel✨
• interpolateAtSample(3G)sample a varying at the location of a specified sample✨
• inverse(3G)calculate the inverse of a matrix✨
• inversesqrt(3G)return the inverse of the square root of the parameter✨
• isinf(3G)determine whether the parameter is positive or negative infinity✨
• isnan(3G)determine whether the parameter is a number✨

L

• ldexp(3G)assemble a floating point number from a value and exponent✨
• length(3G)calculate the length of a vector✨
• lessThan(3G)perform a component-wise less-than comparison of two vectors✨
• lessThanEqual(3G)perform a component-wise less-than-or-equal comparison of two vectors✨
• log(3G)return the natural logarithm of the parameter✨
• log2(3G)return the base 2 logarithm of the parameter✨

M

• matrixCompMult(3G)perform a component-wise multiplication of two matrices✨
• max(3G)return the greater of two values✨
• memoryBarrier(3G)controls the ordering of memory transactions issued by a single shader invocation✨
• memoryBarrierAtomicCounter(3G)controls the ordering of operations on atomic counters issued by a single shader invocation✨
• memoryBarrierBuffer(3G)controls the ordering of operations on buffer variables issued by a single shader invocation✨
• memoryBarrierImage(3G)controls the ordering of operations on image variables issued by a single shader invocation✨
• memoryBarrierShared(3G)controls the ordering of operations on shared variables issued by a single shader invocation✨
• min(3G)return the lesser of two values✨
• mix(3G)linearly interpolate between two values✨
• mod(3G)compute value of one parameter modulo another✨
• modf(3G)separate a value into its integer and fractional components✨

N

• noise(3G)generate values with a pseudo-random noise function✨
• normalize(3G)calculate the normalize product of two vectors✨
• not(3G)logically invert a boolean vector✨
• notEqual(3G)perform a component-wise not-equal-to comparison of two vectors✨

O

• outerProduct(3G)calculate the outer product of a pair of vectors✨

P

• packDouble2x32(3G)create a double-precision value from a pair of unsigned integers✨
• packHalf2x16(3G)convert two 32-bit floating-point quantities to 16-bit quantities and pack them into a single 32-bit integer✨
• packUnorm(3G)pack floating-point values into an unsigned integer✨
• pow(3G)return the value of the first parameter raised to the power of the second✨

R

• radians(3G)convert a quantity in degrees to radians✨
• reflect(3G)calculate the reflection direction for an incident vector✨
• refract(3G)calculate the refraction direction for an incident vector✨
• removedTypes(3G)Describes types removed and replaced in the OpenGL API in OpenGL 4.2✨
• round(3G)find the nearest integer less than or equal to the parameter✨
• roundEven(3G)find the nearest even integer to the parameter✨

S

• sign(3G)extract the sign of the parameter✨
• sin(3G)return the sine of the parameter✨
• sinh(3G)return the hyperbolic sine of the parameter✨
• smoothstep(3G)perform Hermite interpolation between two values✨
• sqrt(3G)return the square root of the parameter✨
• step(3G)generate a step function by comparing two values✨

T

• tan(3G)return the tangent of the parameter✨
• tanh(3G)return the hyperbolic tangent of the parameter✨
• texelFetch(3G)perform a lookup of a single texel within a texture✨
• texelFetchOffset(3G)perform a lookup of a single texel within a texture with an offset✨
• texture(3G)retrieves texels from a texture✨
• textureGather(3G)gathers four texels from a texture✨
• textureGatherOffset(3G)gathers four texels from a texture with offset✨
• textureGatherOffsets(3G)gathers four texels from a texture with an array of offsets✨
• textureGrad(3G)perform a texture lookup with explicit gradients✨
• textureGradOffset(3G)perform a texture lookup with explicit gradients and offset✨
• textureLod(3G)perform a texture lookup with explicit level-of-detail✨
• textureLodOffset(3G)perform a texture lookup with explicit level-of-detail and offset✨
• textureOffset(3G)perform a texture lookup with offset✨
• textureProj(3G)perform a texture lookup with projection✨
• textureProjGrad(3G)perform a texture lookup with projection and explicit gradients✨
• textureProjGradOffset(3G)perform a texture lookup with projection, explicit gradients and offset✨
• textureProjLod(3G)perform a texture lookup with projection and explicit level-of-detail✨
• textureProjLodOffset(3G)perform a texture lookup with projection and explicit level-of-detail and offset✨
• textureProjOffset(3G)perform a texture lookup with projection and offset✨
• textureQueryLevels(3G)compute the number of accessible mipmap levels of a texture✨
• textureQueryLod(3G)compute the level-of-detail that would be used to sample from a texture✨
• textureSamples(3G)return the number of samples of a texture✨
• textureSize(3G)retrieve the dimensions of a level of a texture✨
• transpose(3G)calculate the transpose of a matrix✨
• trunc(3G)find the nearest integer less than or equal to the parameter✨

U

• uaddCarry(3G)add unsigned integers and generate carry✨
• umulExtended(3G)perform a 32- by 32-bit multiply to produce a 64-bit result✨
• unpackDouble2x32(3G)produce two unsigned integers containing the bit encoding of a double precision floating point value✨
• unpackHalf2x16(3G)convert two 16-bit floating-point values packed into a single 32-bit integer into a vector of two 32-bit floating-point quantities✨
• unpackUnorm2x16,_unpackUnorm4x8,_unpackSnorm4x8(3G)unpack floating-point values from an unsigned integer✨
• usubBorrow(3G)subtract unsigned integers and generate borrow✨