1#!amber 2# Copyright 2020 The Amber Authors. 3# 4# Licensed under the Apache License, Version 2.0 (the "License"); 5# you may not use this file except in compliance with the License. 6# You may obtain a copy of the License at 7# 8# https://www.apache.org/licenses/LICENSE-2.0 9# 10# Unless required by applicable law or agreed to in writing, software 11# distributed under the License is distributed on an "AS IS" BASIS, 12# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13# See the License for the specific language governing permissions and 14# limitations under the License. 15 16SHADER vertex vert_shader PASSTHROUGH 17 18SHADER fragment frag_shader GLSL 19#version 430 20layout(location = 0) out vec4 color_out; 21uniform layout(set=0, binding=0) texture2D tex; 22uniform layout(set=0, binding=1) sampler tex_sampler[2]; 23void main() { 24 // Sample outside texture to get border color. 25 vec4 black = texture(sampler2D(tex, tex_sampler[0]), vec2(2.0)); 26 vec4 white = texture(sampler2D(tex, tex_sampler[1]), vec2(2.0)); 27 color_out = vec4(white.x, black.y, white.z, black.w); 28} 29END 30 31IMAGE texture FORMAT R8G8B8A8_UNORM DIM_2D WIDTH 256 HEIGHT 256 32IMAGE framebuffer FORMAT B8G8R8A8_UNORM DIM_2D WIDTH 256 HEIGHT 256 33SAMPLER sampler0 ADDRESS_MODE_U clamp_to_border BORDER_COLOR float_opaque_black 34SAMPLER sampler1 ADDRESS_MODE_U clamp_to_border BORDER_COLOR float_opaque_white 35 36BUFFER position DATA_TYPE vec2<float> DATA 37-0.75 -0.75 38 0.75 -0.75 39 0.75 0.75 40-0.75 0.75 41END 42 43PIPELINE graphics pipeline 44 ATTACH vert_shader 45 ATTACH frag_shader 46 BIND BUFFER texture AS sampled_image DESCRIPTOR_SET 0 BINDING 0 47 BIND SAMPLER_ARRAY sampler0 sampler1 DESCRIPTOR_SET 0 BINDING 1 48 VERTEX_DATA position LOCATION 0 49 BIND BUFFER framebuffer AS color LOCATION 0 50END 51 52CLEAR_COLOR pipeline 0 0 0 255 53CLEAR pipeline 54RUN pipeline DRAW_ARRAY AS TRIANGLE_FAN START_IDX 0 COUNT 4 55 56EXPECT framebuffer IDX 1 1 SIZE 1 1 EQ_RGBA 0 0 0 255 57EXPECT framebuffer IDX 128 128 SIZE 1 1 EQ_RGBA 255 0 255 255 58