| Parameter | Value(*) | Description |
| GL_MAX_COMBINED_TEXTURE_IMAGE_UNITS | 16(8) | This is the sum of the maximum number of texture units available in the vertex + fragment shaders. The minimum value is eight. |
| GL_MAX_CUBE_MAP_TEXTURE_SIZE | 2048(16) | The value gives a rough estimate of the largest cube-map texture that the GL can handle. The value must be at least 16. |
| GL_MAX_FRAGMENT_UNIFORM_VECTORS | 1024(16) | This is the maximum number of vec4 uniform entries that can be used inside a fragment shader. The minimum value supported by all ES 2.0 implementations is 16 vec4 entries. The number of vec4 uniform entries that can actually be used by a developer can vary from implementation to implementation and from one fragment shader to another. |
| GL_MAX_RENDERBUFFER_SIZE | 3839(1) | The value indicates the largest renderbuffer width and height that the GL can handle. The value must be at least 1. |
| GL_MAX_TEXTURE_IMAGE_UNITS | 16(8) | This is the maximum number of texture image units that are available. The minimum value supported by all ES 2.0 implementations is eight. |
| GL_MAX_TEXTURE_SIZE | 2048(64) | The value gives a rough estimate of the largest texture that the GL can handle. The value must be at least 64. |
| GL_MAX_VARYING_VECTORS | 15(8) | This is the maximum number of varying vectors; that is, the number of vec4 entries that can be output by a vertex shader. The minimum value supported by all ES 2.0 implementations is eight(8) vec4 entries. |
| GL_MAX_VERTEX_ATTRIBS | 16(8) | This is the maximum number of vertex attributes that can be specified. The minimum value supported by all ES 2.0 implementation is eight. |
| GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS | 0(0) | This is the maximum number of texture units available in a vertex shader. The minimum value is 0, which implies that the implementation does not support a vertex texture fetch. |
| GL_MAX_VERTEX_UNIFORM_VECTORS | 256(128) | This is the maximum number of vec4 uniform entries that can be used inside a vertex shader. The minimum value supported by all ES 2.0 implementations is 128 vec4 entries. The number of of vec4 uniform entries that can actually be used by a developer can vary from implementation and from one vertex shader to another. For example, 1. some implementations might count user-specified literal values used in a vertex shader against the uniform limit. 2. implementation-specific uniforms (or constants) might need to be included depending on whether the vertex shader makes use of any built-in transcendental functions. Note that there currently is no mechanism that it can use in a particular vertex shader. You can be noticed by compilation error log. |
| GL_MAX_VIEWPORT_DIMS | 3839x3839 | The maximum supported width and height of the viewport. These must be at least as large as the visible dimensions of the display being rendered to. |
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