slang-shaders/nnedi3/shaders/rgb-to-yuv.slang

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2017-03-28 05:59:49 +11:00
#version 450
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
//
layout(push_constant) uniform Push
{
vec4 SourceSize;
vec4 OriginalSize;
vec4 OutputSize;
uint FrameCount;
} params;
layout(std140, set = 0, binding = 0) uniform UBO
{
mat4 MVP;
} global;
#pragma stage vertex
layout(location = 0) in vec4 Position;
layout(location = 1) in vec2 TexCoord;
layout(location = 0) out vec2 vTexCoord;
void main (void) {
gl_Position = global.MVP * Position;
vTexCoord = TexCoord;
}
#pragma stage fragment
layout(location = 0) in vec2 vTexCoord;
layout(location = 0) out vec4 FragColor;
layout(set = 0, binding = 2) uniform sampler2D Source;
void main()
{
vec4 rgba = texture(Source, vTexCoord.xy);
vec4 yuva = vec4(0.0);
yuva.x = rgba.r * 0.299 + rgba.g * 0.587 + rgba.b * 0.114;
yuva.y = rgba.r * -0.169 + rgba.g * -0.331 + rgba.b * 0.5 + 0.5;
yuva.z = rgba.r * 0.5 + rgba.g * -0.419 + rgba.b * -0.081 + 0.5;
yuva.w = 1.0;
FragColor = yuva;
}