1 ------------------------------------------------------------------------- 2 drawElements Quality Program Test Specification 3 ----------------------------------------------- 4 5 Copyright 2014 The Android Open Source Project 6 7 Licensed under the Apache License, Version 2.0 (the "License"); 8 you may not use this file except in compliance with the License. 9 You may obtain a copy of the License at 10 11 http://www.apache.org/licenses/LICENSE-2.0 12 13 Unless required by applicable law or agreed to in writing, software 14 distributed under the License is distributed on an "AS IS" BASIS, 15 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 16 See the License for the specific language governing permissions and 17 limitations under the License. 18 ------------------------------------------------------------------------- 19 Uniform Buffer Object tests 20 21 Tests: 22 + dEQP-GLES3.functional.ubo.* 23 + dEQP-GLES3.functional.shaders.linkage.uniform_block* 24 + dEQP-GLES3.functional.shaders.declarations.invalid_declarations.uniform_block* 25 26 Includes: 27 + Basic uniform buffer object usage 28 - Binding and unbinding uniform buffers 29 - Writing uniform buffer data with glBufferData() 30 + Binding uniform buffers to uniform blocks 31 - glBindBufferRange() 32 - glBindBufferBase() 33 - glUniformBlockBinding() 34 + Querying uniform block memory layout 35 + std140 memory layout 36 + Uniform blocks GLSL 37 - Basic scalar, vector and matrix types in uniform blocks 38 - Samplers in uniform blocks - as negative case! 39 - Structures and arrays in uniform blocks 40 - Uniform block instance names 41 - Uniform block arrays 42 - Layout qualifiers: shared, packed, std140, row_major, column_major 43 - Negative tests for syntax and semantic errors in declarations 44 - Negative tests for uniform block linking 45 - Unused uniforms in uniform blocks 46 + Sharing uniform blocks between vertex and fragment shaders 47 48 Excludes: 49 + Mapping uniform buffers 50 - Will be covered in buffer mapping tests 51 + Negative tests for uniform buffer API 52 - Will be covered in negative API tests 53 54 Description: 55 56 Uniform block tests define a set of uniforms and uniform blocks. In addition two 57 subsets are computed: uniforms accessed from vertex shader and uniforms accessed 58 from fragment shader respectively. The uniform sets are either specified manually 59 or choosen randomly. Values for each uniform are choosen. 60 61 Shaders are generated based on uniform declarations and use set. Each uniform that 62 is in "used set" is read and compared against expected value in the shader. Final 63 result is a boolean value: true if all uniforms contained expected values and false 64 otherwise. Vertex shader result controls green channel: output is 1 if values were 65 correct and 0 otherwise. Fragment shader result controls blue channel in the same 66 manner. 67 68 Shaders are compiled and linked together. Uniform block layout is queried and 69 values are stored into one or more uniform buffers. If std140 memory layout is used, 70 a reference memory layout is used instead and queries are made to validate the 71 layout computed by implementation prior to issuing any draw calls. 72 73 A single quad consisting of two triangles is rendered and resulting framebuffer 74 pixels are checked. If all pixels are white and uniform layout queries didn't 75 return any unexpected values or errors, test case passes. 76 77 Negative tests for compiler and linker use a pair of hand-written shaders. Compile 78 or link is verified to return failure. 79
