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 Single vertex attribute vertex array tests 20 21 Tests: 22 + dEQP-GLES2.functional.vertex_arrays.single_attribute.* 23 24 Includes: 25 + Rendering with different strides from buffer and user pointer. 26 + Attribute normalization with different types and component counts. 27 + Passing attributes to vec2, vec3 and vec4. 28 + Using buffers with different usage. 29 + Buffer attributes with different offsets. 30 31 Excludes: 32 + Buffer data modifications 33 + Stride less than types own size 34 + Robustness with nan or inf 35 + Index buffers or glDrawElements 36 + Different first values for glDrawArrays 37 38 Description: 39 40 Testcases generate data that defines quads in testcase specifig format. 41 This takes account stride, offsets and other parameters. Input types must 42 have two or more components to form distinct coordinates. First two components 43 are coordinates and six subsequent attributes form two triangles which define a 44 quad. Third and fourth component are same for each vertex in quad. 45 This data is uploaded to buffer or used from user pointer while rendering. 46 Rendering uses simple shader that takes first two components and adds 47 first to third component and second to fourth component if more than 48 two components are used. First and third component are used as x coordinate 49 and second and fourth as y. These values are also scaled to range from -1.0 to 1.0. 50 Test renders only once and result is checked against reference implementations result. 51 52 Stride tests render different input type and component count combinations from buffer 53 and user pointer. Stride testcases test npot and pot strides and types real size as stride. 54 Data is passed to shader as vec4. 55 56 Normalization is tested with different input types and component counts. User 57 pointers are used as source for data and vec4 is used in shaders. 58 59 Output type tests pass different input types to different vector types in shader. 60 Also different input type and output type component counts are tested. Data is used 61 from user pointer. 62 63 Usage testcases test buffers with different usage parameters with different strides 64 and different sized types. The data is used as vec2 in shaders. 65
