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 Instanced rendering tests 20e5c31af7Sopenharmony_ci 21e5c31af7Sopenharmony_ciTests: 22e5c31af7Sopenharmony_ci + dEQP-GLES3.functional.instanced.* 23e5c31af7Sopenharmony_ci 24e5c31af7Sopenharmony_ciIncludes: 25e5c31af7Sopenharmony_ci + Draw using: 26e5c31af7Sopenharmony_ci - glDrawArraysInstanced() 27e5c31af7Sopenharmony_ci - glDrawElementsInstanced() 28e5c31af7Sopenharmony_ci + Do instancing using: 29e5c31af7Sopenharmony_ci - gl_InstanceID vertex shader input 30e5c31af7Sopenharmony_ci - glVertexAttribDivisor() 31e5c31af7Sopenharmony_ci - Mixture of the above 32e5c31af7Sopenharmony_ci + Instance counts 1, 2, 4, 20 33e5c31af7Sopenharmony_ci + Instanced attribute tests with different types 34e5c31af7Sopenharmony_ci 35e5c31af7Sopenharmony_ciDescription: 36e5c31af7Sopenharmony_ci 37e5c31af7Sopenharmony_ciFor each instance a rectangle-shaped grid of triangles is drawn. Instanced 38e5c31af7Sopenharmony_civariables are rectangle offset and color components R, G and B. Offsets are 39e5c31af7Sopenharmony_cichosen such that the rectangles are drawn next to each other. 40e5c31af7Sopenharmony_ci 41e5c31af7Sopenharmony_ciIn the cases that test draw function, instancing method and instance count, the 42e5c31af7Sopenharmony_ciinstance variables are either calculated based on gl_InstanceID in the vertex 43e5c31af7Sopenharmony_cishader or given to the vertex shader as attributes instanced with 44e5c31af7Sopenharmony_ciglVertexAttribDivisor(). In a mixed case different methods are used for 45e5c31af7Sopenharmony_cidifferent variables. Instanced attributes are of type float, except for the 46e5c31af7Sopenharmony_cioffset attribute, which is of type vec3. 47e5c31af7Sopenharmony_ci 48e5c31af7Sopenharmony_ciIn the tests for instanced attribute types, only the vertex attribute divisor 49e5c31af7Sopenharmony_cimethod is used. The instanced attributes for color components R, G and B are 50e5c31af7Sopenharmony_ciall int, uint, float or corresponding vectors, or matrices. The instance offset 51e5c31af7Sopenharmony_ciattribute is of type vec3. In these cases, draw function and instance count are 52e5c31af7Sopenharmony_cifixed to glDrawArraysInstanced() and 4, respectively. 53e5c31af7Sopenharmony_ci 54e5c31af7Sopenharmony_ciIn all cases, the resulting image is compared against a reference image 55e5c31af7Sopenharmony_ciproduced by a reference renderer. 56