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56 lines
2.2 KiB
56 lines
2.2 KiB
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drawElements Quality Program Test Specification
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-----------------------------------------------
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Copyright 2014 The Android Open Source Project
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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-------------------------------------------------------------------------
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Instanced rendering tests
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Tests:
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+ dEQP-GLES3.functional.instanced.*
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Includes:
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+ Draw using:
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- glDrawArraysInstanced()
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- glDrawElementsInstanced()
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+ Do instancing using:
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- gl_InstanceID vertex shader input
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- glVertexAttribDivisor()
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- Mixture of the above
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+ Instance counts 1, 2, 4, 20
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+ Instanced attribute tests with different types
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Description:
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For each instance a rectangle-shaped grid of triangles is drawn. Instanced
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variables are rectangle offset and color components R, G and B. Offsets are
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chosen such that the rectangles are drawn next to each other.
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In the cases that test draw function, instancing method and instance count, the
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instance variables are either calculated based on gl_InstanceID in the vertex
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shader or given to the vertex shader as attributes instanced with
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glVertexAttribDivisor(). In a mixed case different methods are used for
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different variables. Instanced attributes are of type float, except for the
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offset attribute, which is of type vec3.
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In the tests for instanced attribute types, only the vertex attribute divisor
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method is used. The instanced attributes for color components R, G and B are
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all int, uint, float or corresponding vectors, or matrices. The instance offset
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attribute is of type vec3. In these cases, draw function and instance count are
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fixed to glDrawArraysInstanced() and 4, respectively.
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In all cases, the resulting image is compared against a reference image
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produced by a reference renderer.
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