1 ------------------------------------------------------------------------- 2 drawElements Quality Program Test Specification 3 ----------------------------------------------- 4 5 Copyright 2014 The Android Open Source Project 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 ------------------------------------------------------------------------- 19 Rasterizer discard tests 20 21 Tests: 22 + dEQP-GLES3.functional.rasterizer_discard.* 23 24 Includes: 25 + Correct discarding of following operations are tested: 26 - All primitive draw modes 27 - Color clears & writes 28 - Depth clears & writes 29 - Stencil clears & writes 30 + Following test cases are created: 31 - Discard test for default framebuffer 32 - Discard test for default framebuffer with scissor test enabled 33 - Discard test for a framebuffer object 34 35 Excludes: 36 37 Description: 38 39 Rasterizer discard functionality is tested by first clearing color, depth 40 and stencil buffers to initial values. Next, rasterizer discarding is 41 enabled, and an operation is performed. Rasterizer discarding is disabled 42 afterwards. For depth and stencil clears, series of primitives are drawn 43 to make sure that the buffer clear operations were ignored. 44 45 Finally, framebuffer pixels are read. If red color is present or blue 46 color is not present, the performed operation was not discarded according 47 to specification and the test fails. 48 49 This procedure is performed for both the default framebuffer and an FBO 50 with color, depth and stencil attachments. Additionally, default 51 framebuffer discards are tested with scissor test enabled. 52
