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 GLSL discard statement 20*35238bceSAndroid Build Coastguard Worker 21*35238bceSAndroid Build Coastguard WorkerTests: 22*35238bceSAndroid Build Coastguard Worker + dEQP-GLES2.functional.shaders.discard.* 23*35238bceSAndroid Build Coastguard Worker 24*35238bceSAndroid Build Coastguard WorkerIncludes: 25*35238bceSAndroid Build Coastguard Worker + Unconditional discard 26*35238bceSAndroid Build Coastguard Worker + Conditional discard with compile-time false condition 27*35238bceSAndroid Build Coastguard Worker + Conditional discard based on uniform value 28*35238bceSAndroid Build Coastguard Worker + Conditional discard based on varying value 29*35238bceSAndroid Build Coastguard Worker + Conditional discard based on texture lookup result 30*35238bceSAndroid Build Coastguard Worker + Discard in main() 31*35238bceSAndroid Build Coastguard Worker + Discard in user-defined function 32*35238bceSAndroid Build Coastguard Worker + Discard inside static for loop 33*35238bceSAndroid Build Coastguard Worker + Discard inside uniform for loop 34*35238bceSAndroid Build Coastguard Worker + Discard inside static loop in user-defined function 35*35238bceSAndroid Build Coastguard Worker 36*35238bceSAndroid Build Coastguard WorkerExcludes: 37*35238bceSAndroid Build Coastguard Worker + Effects on depth buffer values 38*35238bceSAndroid Build Coastguard Worker + Discard when rendering lines and points 39*35238bceSAndroid Build Coastguard Worker 40*35238bceSAndroid Build Coastguard WorkerDescription: 41*35238bceSAndroid Build Coastguard Worker 42*35238bceSAndroid Build Coastguard WorkerTwo triangles forming a quad is rendered with a fragment shader that 43*35238bceSAndroid Build Coastguard Workerexercises the GLSL discard statement. A reference image is rendered 44*35238bceSAndroid Build Coastguard Workerusing a simple C function that implements the same discard condition. 45*35238bceSAndroid Build Coastguard WorkerResults are checked by reading the pixels and comparing image against 46*35238bceSAndroid Build Coastguard Workerthe reference. 47