blob: 0d89a9ea5f39deb96266d33737cdc1403b1d60f0 [file] [log] [blame]
/*
* Copyright (c) 2016-2017, The Linux Foundation. All rights reserved.
* Not a Contribution.
*
* Copyright 2015 The Android Open Source Project
*
* 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
*
* http://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.
*/
const char* forward_tonemap_shader = ""
"#extension GL_OES_EGL_image_external_essl3 : require \n"
"precision highp float; \n"
"precision highp sampler2D; \n"
"layout(binding = 0) uniform samplerExternalOES externalTexture; \n"
"layout(binding = 1) uniform sampler3D tonemapper; \n"
"layout(binding = 2) uniform sampler2D xform; \n"
"layout(location = 3) uniform vec2 tSO; \n"
"#ifdef USE_NONUNIFORM_SAMPLING \n"
"layout(location = 4) uniform vec2 xSO; \n"
"#endif \n"
"in vec2 uv; \n"
"out vec4 fs_color; \n"
" \n"
"vec3 ScaleOffset(in vec3 samplePt, in vec2 so) \n"
"{ \n"
" vec3 adjPt = so.x * samplePt + so.y; \n"
" return adjPt; \n"
"} \n"
" \n"
"void main() \n"
"{ \n"
"vec2 flipped = vec2(uv.x, 1.0f - uv.y); \n"
"vec4 rgb = texture(externalTexture, flipped); \n"
"#ifdef USE_NONUNIFORM_SAMPLING \n"
"vec3 adj = ScaleOffset(rgb.xyz, xSO); \n"
"float r = texture(xform, vec2(adj.r, 0.5f)).r; \n"
"float g = texture(xform, vec2(adj.g, 0.5f)).g; \n"
"float b = texture(xform, vec2(adj.b, 0.5f)).b; \n"
"#else \n"
"float r = rgb.r; \n"
"float g = rgb.g; \n"
"float b = rgb.b; \n"
"#endif \n"
"fs_color.rgb = texture(tonemapper, ScaleOffset(vec3(r, g, b), tSO)).rgb; \n"
"} \n";