src/multimedia/shaders/imc2.frag


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#version 440
#extension GL_GOOGLE_include_directive : enable

#include "uniformbuffer.glsl"
#include "colortransfer.glsl"

layout(location = 0) in vec2 texCoord;
layout(location = 0) out vec4 fragColor;

layout(binding = 1) uniform sampler2D plane1Texture;
layout(binding = 2) uniform sampler2D plane2Texture;

void main()
{
    float Y = texture(plane1Texture, texCoord).r;
    float x = texCoord.x/2.;
    float U = texture(plane2Texture, vec2(x + .5, texCoord.y)).r;
    float V = texture(plane2Texture, vec2(x, texCoord.y)).r;
    vec4 color = vec4(Y, U, V, 1.);
    fragColor = ubuf.colorMatrix * color * ubuf.opacity;

#ifdef QMM_OUTPUTSURFACE_LINEAR
    fragColor = convertSRGBToLinear(fragColor);
#endif

    // Clamp output to valid range to account for out-of-range
    // input values and numerical inaccuracies in YUV->RGB conversion
    fragColor = clamp(fragColor, 0.0, 1.0);
}