doc/testspecs/GLES2/functional.rasterization.txt

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drawElements Quality Program Test Specification
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    Rasterization Tests

Tests:
 + dEQP-GLES2.functional.rasterization.*

Includes:
 + Primitive rasterization
   - Points
   - Lines
   - Triangles
 + Individual triangles, triangle strips and triangle fans
 + Varying interpolation in all primitives
 + Projected (w != 1) and non-projected (w == 1) coordinates
 + Fill rule verification
 + Culling
 + Multisample rasterization

Description:

This test set compares images rendered by a reference software
rasterizer to images rendered by the target. Rasterized points, lines
and triangles are compared to reference, and a deviation of 1 pixel in
position is allowed.

Fill rules are tested using additive blend so that pixels on shared
triangle edges are filled exactly once. Because exact fill rules are
not specified, reference rasterizer uses all valid combinations of
LEFT, RIGHT, TOP and BOTTOM.

Value interpolation is tested for lines and triangles with
vertex-specific colors, small deviation in interpolated color is allowed.

Multisample rasterization is tested with points, lines and triangles.
Because sampling pattern is unknown, deviation in produced colors is
allowed.