55 lines
1.9 KiB
C
55 lines
1.9 KiB
C
/* Copyright (c) 2021, Arm Limited and Contributors
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*
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* SPDX-License-Identifier: Apache-2.0
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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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* http://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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*/
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#ifndef BLUR_COMMON_H_
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#define BLUR_COMMON_H_
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layout(set = 0, binding = 0) uniform sampler2D in_tex;
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layout(rgba16f, set = 0, binding = 1) writeonly uniform image2D out_tex;
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layout(push_constant) uniform Registers
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{
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uvec2 resolution;
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vec2 inv_resolution;
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vec2 inv_input_resolution;
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}
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registers;
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vec2 get_uv(vec2 uv, float x, float y, float scale)
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{
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return uv + registers.inv_input_resolution * (vec2(x, y) * scale);
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}
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vec3 bloom_blur(vec2 uv, float uv_scale)
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{
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vec3 rgb = vec3(0.0);
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const float N = -1.0;
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const float Z = 0.0;
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const float P = 1.0;
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rgb += 0.25 * textureLod(in_tex, get_uv(uv, Z, Z, uv_scale), 0.0).rgb;
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rgb += 0.0625 * textureLod(in_tex, get_uv(uv, N, P, uv_scale), 0.0).rgb;
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rgb += 0.0625 * textureLod(in_tex, get_uv(uv, P, P, uv_scale), 0.0).rgb;
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rgb += 0.0625 * textureLod(in_tex, get_uv(uv, N, N, uv_scale), 0.0).rgb;
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rgb += 0.0625 * textureLod(in_tex, get_uv(uv, P, N, uv_scale), 0.0).rgb;
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rgb += 0.125 * textureLod(in_tex, get_uv(uv, N, Z, uv_scale), 0.0).rgb;
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rgb += 0.125 * textureLod(in_tex, get_uv(uv, P, Z, uv_scale), 0.0).rgb;
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rgb += 0.125 * textureLod(in_tex, get_uv(uv, Z, N, uv_scale), 0.0).rgb;
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rgb += 0.125 * textureLod(in_tex, get_uv(uv, Z, P, uv_scale), 0.0).rgb;
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return rgb;
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}
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#endif |