gstreamer/ext/vulkan/shaders/rgb_to_nv12.frag

#version 450 core

#include "color_convert_generic.glsl"
#include "swizzle.glsl"

layout(location = 0) in vec2 inTexCoord;

layout(set = 0, binding = 0) uniform sampler2D inTexture0;
layout(set = 0, binding = 1) uniform reorder {
  ivec4 in_reorder_idx;
  ivec4 out_reorder_idx;
  ivec2 texSize;
  ColorMatrices matrices;
};

layout(location = 0) out vec4 outColor0;
layout(location = 1) out vec4 outColor1;

void main()
{
  vec4 texel = swizzle (texture(inTexture0, inTexCoord), in_reorder_idx);
  vec4 uv_texel = swizzle (texture(inTexture0, inTexCoord * vec2(2.0)), in_reorder_idx);
  vec3 yuv1 = color_convert_texel (texel.rgb, matrices);
  vec3 yuv2 = color_convert_texel (uv_texel.rgb, matrices);
  vec3 yuv = vec3(yuv1.x, yuv2.y, yuv2.z);

  outColor0 = vec4(yuv[out_reorder_idx[0]], 0.0, 0.0, 1.0);
  outColor1 = vec4(yuv[out_reorder_idx[1]], yuv[out_reorder_idx[2]], 0.0, 1.0);
}