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 GLSL discard statement 20e5c31af7Sopenharmony_ci 21e5c31af7Sopenharmony_ciTests: 22e5c31af7Sopenharmony_ci + dEQP-GLES2.functional.shaders.discard.* 23e5c31af7Sopenharmony_ci 24e5c31af7Sopenharmony_ciIncludes: 25e5c31af7Sopenharmony_ci + Unconditional discard 26e5c31af7Sopenharmony_ci + Conditional discard with compile-time false condition 27e5c31af7Sopenharmony_ci + Conditional discard based on uniform value 28e5c31af7Sopenharmony_ci + Conditional discard based on varying value 29e5c31af7Sopenharmony_ci + Conditional discard based on texture lookup result 30e5c31af7Sopenharmony_ci + Discard in main() 31e5c31af7Sopenharmony_ci + Discard in user-defined function 32e5c31af7Sopenharmony_ci + Discard inside static for loop 33e5c31af7Sopenharmony_ci + Discard inside uniform for loop 34e5c31af7Sopenharmony_ci + Discard inside static loop in user-defined function 35e5c31af7Sopenharmony_ci 36e5c31af7Sopenharmony_ciExcludes: 37e5c31af7Sopenharmony_ci + Effects on depth buffer values 38e5c31af7Sopenharmony_ci + Discard when rendering lines and points 39e5c31af7Sopenharmony_ci 40e5c31af7Sopenharmony_ciDescription: 41e5c31af7Sopenharmony_ci 42e5c31af7Sopenharmony_ciTwo triangles forming a quad is rendered with a fragment shader that 43e5c31af7Sopenharmony_ciexercises the GLSL discard statement. A reference image is rendered 44e5c31af7Sopenharmony_ciusing a simple C function that implements the same discard condition. 45e5c31af7Sopenharmony_ciResults are checked by reading the pixels and comparing image against 46e5c31af7Sopenharmony_cithe reference. 47