| 1 | #extension GL_ARB_texture_rectangle : enable
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| 2 |
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| 3 | uniform sampler2DRect uSrcTex;
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| 4 | uniform sampler2DRect uVTex;
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| 5 | uniform sampler2DRect uUTex;
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| 6 |
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| 7 | float splitBGRA(vec4 color, float coord);
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| 8 | void cconvApplyAYUV(vec4 color);
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| 9 | /* texture internalFormat: GL_LUMINANCE
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| 10 | * size: width X height
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| 11 | * data format: GL_LUMINANCE
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| 12 | *
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| 13 | /* YV12-rgb888 conversion shader */
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| 14 | void cconvYV12(vec2 srcCoord)
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| 15 | {
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| 16 | vec4 clrY = texture2DRect(uSrcTex, srcCoord);
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| 17 | vec4 clrV = texture2DRect(uVTex, vec2(gl_TexCoord[2]));
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| 18 | vec4 clrU = texture2DRect(uUTex, vec2(gl_TexCoord[3]));
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| 19 | float y = splitBGRA(clrY, srcCoord.x);
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| 20 | float v = splitBGRA(clrV, gl_TexCoord[2].x);
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| 21 | float u = splitBGRA(clrU, gl_TexCoord[3].x);
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| 22 |
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| 23 | /* convert it to AYUV (for the GL_BGRA_EXT texture this is mapped as follows:
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| 24 | * A -> B
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| 25 | * Y -> G
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| 26 | * U -> R
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| 27 | * V -> A */
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| 28 | cconvApplyAYUV(vec4(u, y, 0.0, v));
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| 29 | // gl_FragColor = vec4(clrY.r,clrY.r,clrY.r,1.0);
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| 30 | }
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