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#!amber
# Copyright 2021 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.
DEVICE_FEATURE tessellationShader
SHADER vertex vert GLSL
#version 450
layout (location = 0) in vec3 inPosition;
void main(void)
{
gl_Position = vec4(inPosition, 1.0);
}
END
SHADER tessellation_control tesc GLSL
#version 450
layout (vertices = 4) out;
void main(void)
{
gl_TessLevelOuter[0] = 6.0;
gl_TessLevelOuter[1] = 2.0;
gl_out[gl_InvocationID].gl_Position = gl_in[gl_InvocationID].gl_Position;
}
END
SHADER tessellation_evaluation tese GLSL
#version 450
layout (isolines, equal_spacing, cw) in;
void main(void)
{
vec4 p1 = mix(gl_in[0].gl_Position,
gl_in[1].gl_Position,
gl_TessCoord.x);
vec4 p2 = mix(gl_in[2].gl_Position,
gl_in[3].gl_Position,
gl_TessCoord.x);
gl_Position = mix(p1, p2, gl_TessCoord.y);
}
END
SHADER fragment frag GLSL
#version 450
layout (location = 0) out vec4 outColor;
void main(void)
{
outColor = vec4(1, 0, 0, 1);
}
END
SHADER compute comp_shader GLSL
#version 450
layout(local_size_x=10,local_size_y=10) in;
uniform layout(set=0, binding=0, rgba8) image2D resultImage;
layout(set = 0, binding = 1) buffer block0
{
int counter;
};
void main()
{
ivec2 uv = ivec2(gl_GlobalInvocationID.xy);
vec4 color = imageLoad(resultImage, uv);
if(color.r > 0.0) atomicAdd(counter, 1);
}
END
BUFFER vertexPosition DATA_TYPE vec3<float> DATA
-1.0 -1.0 0.0
1.0 -1.0 0.0
-1.0 1.0 0.0
1.0 1.0 0.0
END
BUFFER counter DATA_TYPE int32 DATA 0 END
BUFFER framebuffer FORMAT B8G8R8A8_UNORM
PIPELINE graphics pipeline
ATTACH vert
ATTACH tesc
ATTACH tese
ATTACH frag
PATCH_CONTROL_POINTS 4
FRAMEBUFFER_SIZE 100 100
VERTEX_DATA vertexPosition LOCATION 0
BIND BUFFER framebuffer AS color LOCATION 0
END
CLEAR_COLOR pipeline 0 0 0 255
CLEAR pipeline
RUN pipeline DRAW_ARRAY AS PATCH_LIST START_IDX 0 COUNT 4
PIPELINE compute verify_pipeline
ATTACH comp_shader
BIND BUFFER framebuffer AS storage_image DESCRIPTOR_SET 0 BINDING 0
BIND BUFFER counter AS storage DESCRIPTOR_SET 0 BINDING 1
FRAMEBUFFER_SIZE 100 100
END
# Count the number of red pixels as the line position might differ between implementations.
RUN verify_pipeline 10 10 1
EXPECT counter IDX 0 TOLERANCE 50 EQ 500
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