1*35238bceSAndroid Build Coastguard Worker------------------------------------------------------------------------- 2*35238bceSAndroid Build Coastguard WorkerdrawElements Quality Program Test Specification 3*35238bceSAndroid Build Coastguard Worker----------------------------------------------- 4*35238bceSAndroid Build Coastguard Worker 5*35238bceSAndroid Build Coastguard WorkerCopyright 2014 The Android Open Source Project 6*35238bceSAndroid Build Coastguard Worker 7*35238bceSAndroid Build Coastguard WorkerLicensed under the Apache License, Version 2.0 (the "License"); 8*35238bceSAndroid Build Coastguard Workeryou may not use this file except in compliance with the License. 9*35238bceSAndroid Build Coastguard WorkerYou may obtain a copy of the License at 10*35238bceSAndroid Build Coastguard Worker 11*35238bceSAndroid Build Coastguard Worker http://www.apache.org/licenses/LICENSE-2.0 12*35238bceSAndroid Build Coastguard Worker 13*35238bceSAndroid Build Coastguard WorkerUnless required by applicable law or agreed to in writing, software 14*35238bceSAndroid Build Coastguard Workerdistributed under the License is distributed on an "AS IS" BASIS, 15*35238bceSAndroid Build Coastguard WorkerWITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16*35238bceSAndroid Build Coastguard WorkerSee the License for the specific language governing permissions and 17*35238bceSAndroid Build Coastguard Workerlimitations under the License. 18*35238bceSAndroid Build Coastguard Worker------------------------------------------------------------------------- 19*35238bceSAndroid Build Coastguard Worker Rasterizer discard tests 20*35238bceSAndroid Build Coastguard Worker 21*35238bceSAndroid Build Coastguard WorkerTests: 22*35238bceSAndroid Build Coastguard Worker + dEQP-GLES3.functional.rasterizer_discard.* 23*35238bceSAndroid Build Coastguard Worker 24*35238bceSAndroid Build Coastguard WorkerIncludes: 25*35238bceSAndroid Build Coastguard Worker + Correct discarding of following operations are tested: 26*35238bceSAndroid Build Coastguard Worker - All primitive draw modes 27*35238bceSAndroid Build Coastguard Worker - Color clears & writes 28*35238bceSAndroid Build Coastguard Worker - Depth clears & writes 29*35238bceSAndroid Build Coastguard Worker - Stencil clears & writes 30*35238bceSAndroid Build Coastguard Worker + Following test cases are created: 31*35238bceSAndroid Build Coastguard Worker - Discard test for default framebuffer 32*35238bceSAndroid Build Coastguard Worker - Discard test for default framebuffer with scissor test enabled 33*35238bceSAndroid Build Coastguard Worker - Discard test for a framebuffer object 34*35238bceSAndroid Build Coastguard Worker 35*35238bceSAndroid Build Coastguard WorkerExcludes: 36*35238bceSAndroid Build Coastguard Worker 37*35238bceSAndroid Build Coastguard WorkerDescription: 38*35238bceSAndroid Build Coastguard Worker 39*35238bceSAndroid Build Coastguard WorkerRasterizer discard functionality is tested by first clearing color, depth 40*35238bceSAndroid Build Coastguard Workerand stencil buffers to initial values. Next, rasterizer discarding is 41*35238bceSAndroid Build Coastguard Workerenabled, and an operation is performed. Rasterizer discarding is disabled 42*35238bceSAndroid Build Coastguard Workerafterwards. For depth and stencil clears, series of primitives are drawn 43*35238bceSAndroid Build Coastguard Workerto make sure that the buffer clear operations were ignored. 44*35238bceSAndroid Build Coastguard Worker 45*35238bceSAndroid Build Coastguard WorkerFinally, framebuffer pixels are read. If red color is present or blue 46*35238bceSAndroid Build Coastguard Workercolor is not present, the performed operation was not discarded according 47*35238bceSAndroid Build Coastguard Workerto specification and the test fails. 48*35238bceSAndroid Build Coastguard Worker 49*35238bceSAndroid Build Coastguard WorkerThis procedure is performed for both the default framebuffer and an FBO 50*35238bceSAndroid Build Coastguard Workerwith color, depth and stencil attachments. Additionally, default 51*35238bceSAndroid Build Coastguard Workerframebuffer discards are tested with scissor test enabled. 52