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2 drawElements Quality Program Test Specification
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5 Copyright 2014 The Android Open Source Project
7 Licensed under the Apache License, Version 2.0 (the "License");
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22 + dEQP-GLES31.functional.texture.gather.*
25 + textureGather, textureGatherOffset and textureGatherOffsets tests
26 - Also dynamic-offset variant of textureGatherOffset
27 + All supported texture types
30 - Cube map for offset-less variant only (not defined for others)
31 + rgba8 unorm, uint and int color formats
32 + depth32f format for shadow variants
33 - LESS and GREATER comparison functions
34 + For color textures, test each value (0 to 3) for the color component
35 argument, as well as no argument (implicit 0)
36 + Power-of-two and non-power-of-two texture sizes
37 - Test each wrap mode (clamp to edge, repeat, mirrored repeat) for both S and
39 + Texture swizzle (for color formats)
40 - Test each swizzle source for each color component
41 + Test that filter modes have no effect (assuming texture is still complete)
43 + For color textures, test gathering from incomplete texture
44 + For offset(s) variants, test various offsets from both the spec-required
45 minimum range as well as implementation's range
48 + Rest of texture formats
49 + Rest of depth comparison functions
54 The texture gather test group contains tests for the textureGather* group of
57 Each test case creates and sets up a 2d, 2d array or cube texture with unorm,
58 int, uint or depth format. A shader program is created that uses the appropriate
59 textureGather* on that texture in the fragment shader, and outputs the resulting
60 color as a fragment output. A framebuffer object with a renderbuffer object as
61 its color attachment is used; the renderbuffer's format matches that of the
62 texture (except for depth formats, for which rgba8 is used). The resulting image
63 is read with glReadPixels(), and verified with routines that take coordinate
64 imprecisions into account. Multiple shaders and rendering iterations are used,
65 so that different color component and/or offset arguments to the textureGather*
66 function can be tested.
68 The textureGatherOffsets functions, as well as textureGatherOffset with dynamic
69 offset, are tested if the GL_EXT_gpu_shader5 extension is supported.