Variable GLConst

Type Declaration

• ReadonlyALWAYS: 519

  GL_ALWAYS — the stencil test's initial state, and what a mask pass uses.

• ReadonlyARRAY_BUFFER: 34962

  GL_ARRAY_BUFFER — vertex attribute storage.

• ReadonlyBLEND: 3042

  GL_BLEND — enabled around sprite and particle passes; see webgl-renderer.ts.

• ReadonlyCCW: 2305

  GL_CCW — counter-clockwise front faces (§7a right-handed, Y-up).

• ReadonlyCLAMP_TO_EDGE: 33071

  GL_CLAMP_TO_EDGE — the default wrap mode of a §77 texture (R-30).

• ReadonlyCOLOR_ATTACHMENT0: 36064

  GL_COLOR_ATTACHMENT0 — a render target's colour texture (R-4).

• ReadonlyCOLOR_BUFFER_BIT: 16384

  GL_COLOR_BUFFER_BIT, for WebglContext.clear.

• ReadonlyCOMPILE_STATUS: 35713

  GL_COMPILE_STATUS.

• ReadonlyCULL_FACE: 2884

  GL_CULL_FACE, deliberately left disabled — see webgl-renderer.ts.

• ReadonlyDECR: 7683

  GL_DECR — decrement, saturating at 0.

• ReadonlyDECR_WRAP: 34056

  GL_DECR_WRAP — decrement, wrapping 0 to 255.

• ReadonlyDEPTH_ATTACHMENT: 36096

  GL_DEPTH_ATTACHMENT — a render target's depth renderbuffer (R-4).

• ReadonlyDEPTH_BUFFER_BIT: 256

  GL_DEPTH_BUFFER_BIT, for WebglContext.clear.

• ReadonlyDEPTH_COMPONENT: 6402

  GL_DEPTH_COMPONENT — the texel format of a depth texture (R-18).

• ReadonlyDEPTH_COMPONENT16: 33189

  GL_DEPTH_COMPONENT16 — storage format of a render target's depth renderbuffer (R-4). The narrowest depth format WebGL 2 guarantees is renderbuffer-renderable everywhere; 24-bit depth and packed depth-stencil are staged with §67 and §69 (see gl-render-target.ts).

• ReadonlyDEPTH_COMPONENT24: 33190

  GL_DEPTH_COMPONENT24 — sized internal format of a samplable depth attachment (R-18, §69). Twenty-four bits rather than the renderbuffer's sixteen because a shadow map's whole content is a depth comparison, and 16-bit quantization over a 100 m volume shows as banded self-shadowing before any bias can help; WebGL 2 requires this format for textures.

• ReadonlyDEPTH_STENCIL_ATTACHMENT: 33306

  GL_DEPTH_STENCIL_ATTACHMENT — where GL.DEPTH24_STENCIL8 attaches.

• ReadonlyDEPTH_TEST: 2929

  GL_DEPTH_TEST.

• ReadonlyDEPTH24_STENCIL8: 35056

  GL_DEPTH24_STENCIL8 — the packed depth-plus-stencil renderbuffer storage a render target asks for with stencil: true (R-7, §67).

  Packed rather than a separate STENCIL_INDEX8 renderbuffer: WebGL 2 guarantees this combination is framebuffer-complete, a separate stencil attachment beside a separate depth attachment is not guaranteed to be, and one renderbuffer is one allocation. The consequence is stated where it matters (gl-render-target.ts): the packed form is a renderbuffer, so a target cannot ask for a stencil and R-18's samplable depthTexture at once.

• ReadonlyDST_COLOR: 774

  GL_DST_COLOR — source factor of the "multiply" blend mode.

• ReadonlyELEMENT_ARRAY_BUFFER: 34963

  GL_ELEMENT_ARRAY_BUFFER — index storage; part of vertex-array state.

• ReadonlyEQUAL: 514

  GL_EQUAL — the mask test: draw only where the mask was written.

• ReadonlyFLOAT: 5126

  GL_FLOAT — the position attribute's component type.

• ReadonlyFRAGMENT_SHADER: 35632

  GL_FRAGMENT_SHADER.

• ReadonlyFRAMEBUFFER: 36160

  GL_FRAMEBUFFER — the bind point for both drawing and attaching (R-4).

• ReadonlyFRAMEBUFFER_COMPLETE: 36053

  GL_FRAMEBUFFER_COMPLETE — the one status a usable framebuffer reports.

• ReadonlyGEQUAL: 518

  GL_GEQUAL.

• ReadonlyGPU_DISJOINT_EXT: 36795

  GL_GPU_DISJOINT_EXT — true when the GPU reset its timers this interval. A completed elapsed-time query whose disjoint flag is set is discarded rather than published as gpuFrameTime.

• ReadonlyGREATER: 516

  GL_GREATER.

• ReadonlyINCR: 7682

  GL_INCR — increment, saturating at 255.

• ReadonlyINCR_WRAP: 34055

  GL_INCR_WRAP — increment, wrapping 255 to 0.

• ReadonlyINVERT: 5386

  GL_INVERT — bitwise-invert the stored value.

• ReadonlyKEEP: 7680

  GL_KEEP — leave the stored value alone; the initial state of all three ops.

• ReadonlyLEQUAL: 515

  GL_LEQUAL — the depth comparison this backend uses, and a stencil one.

• ReadonlyLESS: 513

  GL_LESS.

• ReadonlyLINEAR: 9729

  GL_LINEAR — bilinear sampling, and the default §77 filter (R-30).

• ReadonlyLINEAR_MIPMAP_LINEAR: 9987

  GL_LINEAR_MIPMAP_LINEAR — trilinear (§77, R-30b, 2026-08-21).

• ReadonlyLINEAR_MIPMAP_NEAREST: 9985

  GL_LINEAR_MIPMAP_NEAREST — bilinear in level, one level (§77, R-30b).

• ReadonlyLINES: 1

  GL_LINES — two vertices per primitive.

• ReadonlyLINK_STATUS: 35714

  GL_LINK_STATUS.

• ReadonlyMAX_TEXTURE_MAX_ANISOTROPY_EXT: 34047

  GL_MAX_TEXTURE_MAX_ANISOTROPY_EXT — the device's ceiling, read once per cache the first time a texture asks for anisotropy (§62, §77, R-30b).

• ReadonlyMAX_TEXTURE_SIZE: 3379

  GL_MAX_TEXTURE_SIZE, the one §62 limit the MVP reports.

• ReadonlyMIRRORED_REPEAT: 33648

  GL_MIRRORED_REPEAT — §77's mirrored tiling wrap mode (R-30).

• ReadonlyNEAREST: 9728

  GL_NEAREST — point sampling. The one place this tier uses it is §69's shadow map (R-18): a DEPTH_COMPONENT texture is not filterable in GLES 3.0, so LINEAR would leave it incomplete and sample as black. The percentage-closer filter is therefore explicit taps in the shader rather than hardware filtering — see gl-shadow.ts.

• ReadonlyNEAREST_MIPMAP_LINEAR: 9986

  GL_NEAREST_MIPMAP_LINEAR — point in level, two levels (§77, R-30b).

• ReadonlyNEAREST_MIPMAP_NEAREST: 9984

  GL_NEAREST_MIPMAP_NEAREST — point in level, one level (§77, R-30b).

• ReadonlyNEVER: 512

  GL_NEVER — a stencil test that never passes.

• ReadonlyNOTEQUAL: 517

  GL_NOTEQUAL — the inverse mask test.

• ReadonlyONE: 1

  GL_ONE — destination factor of "additive", source of "screen".

• ReadonlyONE_MINUS_SRC_ALPHA: 771

  GL_ONE_MINUS_SRC_ALPHA — destination factor of the same blend.

• ReadonlyONE_MINUS_SRC_COLOR: 769

  GL_ONE_MINUS_SRC_COLOR — destination factor of "screen".

• ReadonlyQUERY_RESULT: 34918

  GL_QUERY_RESULT — the completed query's value (nanoseconds here).

• ReadonlyQUERY_RESULT_AVAILABLE: 34919

  GL_QUERY_RESULT_AVAILABLE — whether GL.QUERY_RESULT may be read.

• ReadonlyRENDERBUFFER: 36161

  GL_RENDERBUFFER — the bind point for depth storage (R-4).

• ReadonlyREPEAT: 10497

  GL_REPEAT — §77's tiling wrap mode (R-30, 2026-08-13).

• ReadonlyREPLACE: 7681

  GL_REPLACE — store the reference value.

• ReadonlyRGBA: 6408

  GL_RGBA — the texel upload format.

• ReadonlyRGBA8: 32856

  GL_RGBA8 — the sized internal format of an MVP-tier texture.

• ReadonlySCISSOR_TEST: 3089

  GL_SCISSOR_TEST — enabled for the lifetime of the renderer.

• ReadonlySRC_ALPHA: 770

  GL_SRC_ALPHA — source factor of the straight-alpha blend (§66).

• ReadonlySRC_COLOR: 768

  GL_SRC_COLOR; declared for completeness of the blend-factor set.

• ReadonlySRGB8_ALPHA8: 35907

  GL_SRGB8_ALPHA8 — the sized internal format of a texture whose texels are sRGB-encoded (§60a, R-15).

  Chosen instead of a decode in the shader because the hardware does it on sample, i.e. before filtering: bilinear interpolation between two sRGB-encoded texels is wrong in exactly the way a colour space exists to prevent, and a shader-side pow would interpolate first and decode after. The alpha channel of this format is not encoded, which matches srgbToLinearRGBA's rule that alpha is coverage, not light.

• ReadonlySTATIC_DRAW: 35044

  GL_STATIC_DRAW — the only usage hint this tier uploads with.

• ReadonlySTENCIL_BUFFER_BIT: 1024

  GL_STENCIL_BUFFER_BIT, for WebglContext.clear (§67, R-7).

• ReadonlySTENCIL_TEST: 2960

  GL_STENCIL_TEST — disabled until a material declares stencil (§57).

• ReadonlyTEXTURE_2D: 3553

  GL_TEXTURE_2D — the one texture target this tier binds (§77).

• ReadonlyTEXTURE_MAG_FILTER: 10240

  GL_TEXTURE_MAG_FILTER.

• ReadonlyTEXTURE_MAX_ANISOTROPY_EXT: 34046

  GL_TEXTURE_MAX_ANISOTROPY_EXT — the per-texture anisotropy limit of EXT_texture_filter_anisotropic (§77, R-30b).

  Written with texParameteri rather than texParameterf: the extension accepts both, Texture.anisotropy is an integer by construction (§85), and an integer keeps this package's GL budget at the entry points it already declares (see WebglContext).

• ReadonlyTEXTURE_MIN_FILTER: 10241

  GL_TEXTURE_MIN_FILTER.

• ReadonlyTEXTURE_WRAP_S: 10242

  GL_TEXTURE_WRAP_S.

• ReadonlyTEXTURE_WRAP_T: 10243

  GL_TEXTURE_WRAP_T.

• ReadonlyTEXTURE0: 33984

  GL_TEXTURE0 — the one texture unit the sprite pipeline samples from.

• ReadonlyTIME_ELAPSED_EXT: 35007

  GL_TIME_ELAPSED_EXT — EXT_disjoint_timer_query_webgl2's elapsed-time query target (§62 timestamp queries, A-1). Nanoseconds between beginQuery and endQuery.

• ReadonlyTRIANGLES: 4

  GL_TRIANGLES — three vertices per primitive.

• ReadonlyUNSIGNED_BYTE: 5121

  GL_UNSIGNED_BYTE — the RGBA8 texel component type.

• ReadonlyUNSIGNED_INT: 5125

  GL_UNSIGNED_INT — index type of a Uint32Array index buffer.

• ReadonlyUNSIGNED_SHORT: 5123

  GL_UNSIGNED_SHORT — index type of a Uint16Array index buffer.

• ReadonlyVERTEX_SHADER: 35633

  GL_VERTEX_SHADER.

• ReadonlyZERO: 0

  GL_ZERO — destination factor of the "multiply" blend mode (§57).