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43 lines
1.2 KiB
GLSL
43 lines
1.2 KiB
GLSL
#version 330 core
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in vec2 TexCord; // 纹理坐标
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uniform int format = -1; // 像素格式
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uniform sampler2D tex_y;
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uniform sampler2D tex_u;
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uniform sampler2D tex_v;
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uniform sampler2D tex_uv;
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void main()
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{
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vec3 yuv;
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vec3 rgb;
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if(format == 0) // YUV420P转RGB
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{
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yuv.x = texture2D(tex_y, TexCord).r;
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yuv.y = texture2D(tex_u, TexCord).r-0.5;
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yuv.z = texture2D(tex_v, TexCord).r-0.5;
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}
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else if(format == 23) // NV12转RGB
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{
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yuv.x = texture2D(tex_y, TexCord.st).r;
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yuv.y = texture2D(tex_uv, TexCord.st).r - 0.5;
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yuv.z = texture2D(tex_uv, TexCord.st).g - 0.5;
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}
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else if(format == 12){ //YUVJ420P (Full Range YUV) 转RGB
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yuv.x = (texture2D(tex_y, TexCord).r * 255.0 - 16.0) / 219.0;
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yuv.y = (texture2D(tex_u, TexCord).r * 255.0 - 128.0) / 224.0;
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yuv.z = (texture2D(tex_v, TexCord).r * 255.0 - 128.0) / 224.0;
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}
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else
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{
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}
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rgb = mat3(1.0, 1.0, 1.0,
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0.0, -0.39465, 2.03211,
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1.13983, -0.58060, 0.0) * yuv;
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// gl_FragColor = vec4(rgb, 1.0);
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// Clamp RGB 范围到 [0, 1]，以避免溢出
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gl_FragColor = vec4(clamp(rgb, 0.0, 1.0), 1.0);
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}
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