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[Docs] Add wiki content to Markdown docs

Change-Id: I729d3208b206e83f99e73002b45402c4f6f9f443
Reviewed-on: https://chromium-review.googlesource.com/301560
Reviewed-by: Geoff Lang <geofflang@chromium.org>
Reviewed-by: Corentin Wallez <cwallez@chromium.org>
Tested-by: Geoff Lang <geofflang@chromium.org>

Resource Limits

OpenGL ES 2.0 API is quite powerful but there are still some features that are optional or allow for wide variability between implementations.

Applications that need more than the minimum values for these limits should query the capabilities of the GL device and scale their usage based on the device’s feature set. Failing to do so and assuming sufficient limits typically results in reduced portability.

The various implementation dependent limits can be found in Tables 6.18 – 6.20 of the [OpenGL ES 2.0.25 specification] (http://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.25.pdf).

Capabilities

Capability | ES 2.0 Minimum | ANGLE | SM2 | SM3 | SM4+ :—————————————– | :————- | :————— | :—- | :——- | :——- GL_MAX_VERTEX_ATTRIBS | 8 | 16 | | | GL_MAX_VERTEX_UNIFORM_VECTORS | 128 | 254 | | | GL_MAX_VERTEX_TEXTURE_IMAGE_UNITS | 0 | (fn1) | 0 | 0 | 4 GL_MAX_VARYING_VECTORS | 8 | (fn1) | 8 | 10 | 10 GL_MAX_FRAGMENT_UNIFORM_VECTORS | 16 | (fn1) | 29 | 221 | 221 GL_MAX_TEXTURE_IMAGE_UNITS | 8 | 16 | | | GL_MAX_TEXTURE_SIZE | 64 | 2048-16384 (fn1) | | | GL_MAX_CUBE_MAP_SIZE | 16 | 2048-16384 (fn1) | | | GL_MAX_RENDERBUFFER_SIZE | 1 | 2048-16384 (fn1) | | | GL_ALIASED_POINT_SIZE_RANGE (min, max) | (1, 1) | (fn2) | (1,1) | (1, fn2) | (1, fn2) GL_ALIASED_LINE_WIDTH_RANGE (min, max) | (1, 1) | (1, 1) | | |

Notes

fn1: limits vary based on the underlying hardware capabilities
fn2: on SM3 or better hardware the max point size is D3DCAPS9.MaxPointSize

Source

doc/ResourceLimits.md

# Resource Limits

OpenGL ES 2.0 API is quite powerful but there are still some features that are
optional or allow for wide variability between implementations.

Applications that need more than the minimum values for these limits should
query the capabilities of the GL device and scale their usage based on the
device’s feature set. Failing to do so and assuming sufficient limits typically
results in reduced portability.

The various implementation dependent limits can be found in Tables 6.18 – 6.20
of the [OpenGL ES 2.0.25 specification]
(http://www.khronos.org/registry/gles/specs/2.0/es_full_spec_2.0.25.pdf).

# Capabilities

Capability                                 | ES 2.0 Minimum | ANGLE            | SM2   | SM3      | SM4+
:----------------------------------------- | :------------- | :--------------- | :---- | :------- | :-------
GL\_MAX\_VERTEX\_ATTRIBS                   | 8              | 16               |       |          |
GL\_MAX\_VERTEX\_UNIFORM\_VECTORS          | 128            | 254              |       |          |
GL\_MAX\_VERTEX\_TEXTURE\_IMAGE\_UNITS     | 0              | (fn1)            | 0     | 0        | 4
GL\_MAX\_VARYING\_VECTORS                  | 8              | (fn1)            | 8     | 10       | 10
GL\_MAX\_FRAGMENT\_UNIFORM\_VECTORS        | 16             | (fn1)            | 29    | 221      | 221
GL\_MAX\_TEXTURE\_IMAGE\_UNITS             | 8              | 16               |       |          |
GL\_MAX\_TEXTURE\_SIZE                     | 64             | 2048-16384 (fn1) |       |          |
GL\_MAX\_CUBE\_MAP\_SIZE                   | 16             | 2048-16384 (fn1) |       |          |
GL\_MAX\_RENDERBUFFER\_SIZE                | 1              | 2048-16384 (fn1) |       |          |
GL\_ALIASED\_POINT\_SIZE\_RANGE (min, max) | (1, 1)         | (fn2)            | (1,1) | (1, fn2) | (1, fn2)
GL\_ALIASED\_LINE\_WIDTH\_RANGE (min, max) | (1, 1)         | (1, 1)           |       |          |

## Notes

*   fn1: limits vary based on the underlying hardware capabilities
*   fn2: on SM3 or better hardware the max point size is D3DCAPS9.MaxPointSize