mirror of
https://github.com/Abdess/retroarch_system.git
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33 lines
962 B
Plaintext
33 lines
962 B
Plaintext
struct inputdata
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{
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vec2 video_size;
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vec2 texture_size;
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vec2 output_size;
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float frame_count;
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float frame_direction;
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float frame_rotation;
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};
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attribute vec4 a_position;
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attribute vec2 a_texCoord;
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uniform inputdata IN;
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varying vec4 TexCoord[8];
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void main()
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{
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const vec2 OGLSize = vec2( 1024.0, 512.0);
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vec2 OGLInvSize = 1.0/OGLSize;
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float dx = OGLInvSize.x;
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float dy = OGLInvSize.y;
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gl_Position = a_position;
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TexCoord[0].xy = a_texCoord;
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TexCoord[1] = TexCoord[0].xxxy + vec4( -dx, 0, dx,-2.0*dy); // A1 B1 C1
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TexCoord[2] = TexCoord[0].xxxy + vec4( -dx, 0, dx, -dy); // A B C
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TexCoord[3] = TexCoord[0].xxxy + vec4( -dx, 0, dx, 0); // D E F
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TexCoord[4] = TexCoord[0].xxxy + vec4( -dx, 0, dx, dy); // G H I
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TexCoord[5] = TexCoord[0].xxxy + vec4( -dx, 0, dx, 2.0*dy); // G5 H5 I5
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TexCoord[6] = TexCoord[0].xyyy + vec4(-2.0*dx,-dy, 0, dy); // A0 D0 G0
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TexCoord[7] = TexCoord[0].xyyy + vec4( 2.0*dx,-dy, 0, dy); // C4 F4 I4
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}
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