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70 lines
1.7 KiB
70 lines
1.7 KiB
# Copyright 2019 The Amber Authors.
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#
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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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#
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# https://www.apache.org/licenses/LICENSE-2.0
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#
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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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[vertex shader]
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#version 430
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layout(location = 0) in vec4 position;
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layout(location = 0) out vec4 frag_color;
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void main() {
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const vec4 color[4] =
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{ vec4(1.,0.,0.,1.),
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vec4(0.,1.,0.,1.),
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vec4(0.,0.,1.,1.),
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vec4(1.,0.,1.,1.)};
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const vec4 pos[4] =
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{ vec4(0. ,0. ,0. ,0. ),
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vec4(0. ,1. ,0. ,0.),
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vec4(1., 0., 0., 0),
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vec4(1. ,1.,0., 0.)};
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gl_Position = position + pos[gl_InstanceIndex % 4];
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frag_color = color[gl_InstanceIndex % 4];
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}
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[fragment shader]
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#version 430
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layout(location = 0) in vec4 frag_color;
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layout(location = 0) out vec4 final_color;
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void main() {
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final_color = frag_color;
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}
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[vertex data]
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# position
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0/R8G8_SNORM
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# Quarter frame
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# R8 G8
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-128 -128
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0 -128
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0 0
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-128 -128
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-128 0
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0 0
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[test]
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clear
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draw arrays instanced TRIANGLE_LIST 0 6 4
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relative probe rect rgba (0.0, 0.0, 0.5, 0.5) (1.0, 0.0, 0.0, 1.0)
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relative probe rect rgba (0.5, 0.0, 0.5, 0.5) (0.0, 0.0, 1.0, 1.0)
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relative probe rect rgba (0.0, 0.5, 0.5, 0.5) (0.0, 1.0, 0.0, 1.0)
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relative probe rect rgba (0.5, 0.5, 0.5, 0.5) (1.0, 0.0, 1.0, 1.0)
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