1e5c31af7Sopenharmony_ci------------------------------------------------------------------------- 2e5c31af7Sopenharmony_cidrawElements Quality Program Test Specification 3e5c31af7Sopenharmony_ci----------------------------------------------- 4e5c31af7Sopenharmony_ci 5e5c31af7Sopenharmony_ciCopyright 2014 The Android Open Source Project 6e5c31af7Sopenharmony_ci 7e5c31af7Sopenharmony_ciLicensed under the Apache License, Version 2.0 (the "License"); 8e5c31af7Sopenharmony_ciyou may not use this file except in compliance with the License. 9e5c31af7Sopenharmony_ciYou may obtain a copy of the License at 10e5c31af7Sopenharmony_ci 11e5c31af7Sopenharmony_ci http://www.apache.org/licenses/LICENSE-2.0 12e5c31af7Sopenharmony_ci 13e5c31af7Sopenharmony_ciUnless required by applicable law or agreed to in writing, software 14e5c31af7Sopenharmony_cidistributed under the License is distributed on an "AS IS" BASIS, 15e5c31af7Sopenharmony_ciWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16e5c31af7Sopenharmony_ciSee the License for the specific language governing permissions and 17e5c31af7Sopenharmony_cilimitations under the License. 18e5c31af7Sopenharmony_ci------------------------------------------------------------------------- 19e5c31af7Sopenharmony_ci Rasterizer discard tests 20e5c31af7Sopenharmony_ci 21e5c31af7Sopenharmony_ciTests: 22e5c31af7Sopenharmony_ci + dEQP-GLES3.functional.rasterizer_discard.* 23e5c31af7Sopenharmony_ci 24e5c31af7Sopenharmony_ciIncludes: 25e5c31af7Sopenharmony_ci + Correct discarding of following operations are tested: 26e5c31af7Sopenharmony_ci - All primitive draw modes 27e5c31af7Sopenharmony_ci - Color clears & writes 28e5c31af7Sopenharmony_ci - Depth clears & writes 29e5c31af7Sopenharmony_ci - Stencil clears & writes 30e5c31af7Sopenharmony_ci + Following test cases are created: 31e5c31af7Sopenharmony_ci - Discard test for default framebuffer 32e5c31af7Sopenharmony_ci - Discard test for default framebuffer with scissor test enabled 33e5c31af7Sopenharmony_ci - Discard test for a framebuffer object 34e5c31af7Sopenharmony_ci 35e5c31af7Sopenharmony_ciExcludes: 36e5c31af7Sopenharmony_ci 37e5c31af7Sopenharmony_ciDescription: 38e5c31af7Sopenharmony_ci 39e5c31af7Sopenharmony_ciRasterizer discard functionality is tested by first clearing color, depth 40e5c31af7Sopenharmony_ciand stencil buffers to initial values. Next, rasterizer discarding is 41e5c31af7Sopenharmony_cienabled, and an operation is performed. Rasterizer discarding is disabled 42e5c31af7Sopenharmony_ciafterwards. For depth and stencil clears, series of primitives are drawn 43e5c31af7Sopenharmony_cito make sure that the buffer clear operations were ignored. 44e5c31af7Sopenharmony_ci 45e5c31af7Sopenharmony_ciFinally, framebuffer pixels are read. If red color is present or blue 46e5c31af7Sopenharmony_cicolor is not present, the performed operation was not discarded according 47e5c31af7Sopenharmony_cito specification and the test fails. 48e5c31af7Sopenharmony_ci 49e5c31af7Sopenharmony_ciThis procedure is performed for both the default framebuffer and an FBO 50e5c31af7Sopenharmony_ciwith color, depth and stencil attachments. Additionally, default 51e5c31af7Sopenharmony_ciframebuffer discards are tested with scissor test enabled. 52