tests/cases/compute_mat2x2.amber

#!amber
# Copyright 2019 The Amber Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
#     https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

SHADER compute compute_shader GLSL
#version 430

layout(set = 0, binding = 0) buffer block0 {
  mat2 identical_mat_0;
};

layout(set = 0, binding = 1) uniform block1 {
  mat2 identical_mat_1;
};

layout(set = 0, binding = 2) buffer block3 {
  vec2 test0;
  vec2 test1;
};

void main() {
  test0 = identical_mat_0 * test0;
  test1 = identical_mat_1 * test1;
}
END

# This is bound as an SSBO, so matrix stride is 8
BUFFER buf0 DATA_TYPE mat2x2<float> DATA
1.0 0.0
0.0 1.0
END

# This is bound as a UBO so matrix stride is 16 due to GLSLang setting
# STD140 layout.
BUFFER buf1 DATA_TYPE mat2x2<float> DATA
1.0 0.0 0.0 0.0
0.0 1.0 0.0 0.0
END

BUFFER buf2 DATA_TYPE vec2<float> DATA
3.7 9.4
4.5 6.1
END

PIPELINE compute pipeline
  ATTACH compute_shader

  BIND BUFFER buf0 AS storage DESCRIPTOR_SET 0 BINDING 0
  BIND BUFFER buf1 AS uniform DESCRIPTOR_SET 0 BINDING 1
  BIND BUFFER buf2 AS storage DESCRIPTOR_SET 0 BINDING 2
END

RUN pipeline 1 1 1

EXPECT buf2 IDX 0 EQ 3.7 9.4
EXPECT buf2 IDX 8 EQ 4.5 6.1