diff options
Diffstat (limited to 'src/qtmultimediaquicktools/shaders/yuyvvideo.frag')
-rw-r--r-- | src/qtmultimediaquicktools/shaders/yuyvvideo.frag | 18 |
1 files changed, 4 insertions, 14 deletions
diff --git a/src/qtmultimediaquicktools/shaders/yuyvvideo.frag b/src/qtmultimediaquicktools/shaders/yuyvvideo.frag index 72732cd66..5ce8b7366 100644 --- a/src/qtmultimediaquicktools/shaders/yuyvvideo.frag +++ b/src/qtmultimediaquicktools/shaders/yuyvvideo.frag @@ -1,22 +1,12 @@ -uniform sampler2D yuvTexture; // YUYV macropixel texture passed as RGBA format -uniform mediump float imageWidth; // The YUYV texture appears to the shader with 1/2 the image width since we use the RGBA format to pass YUYV +uniform sampler2D yTexture; // Y component passed as GL_LUMINANCE_ALPHA, in yuyv Y = r +uniform sampler2D uvTexture; // UV component passed as RGBA macropixel, in uyvy U = g, V = a uniform mediump mat4 colorMatrix; uniform lowp float opacity; - varying highp vec2 qt_TexCoord; void main() { - // For Y0 U0 Y1 V0 macropixel, lookup Y0 or Y1 based on whether - // the original texture x coord is even or odd. - mediump float Y; - if (fract(floor(qt_TexCoord.x * imageWidth + 0.5) / 2.0) > 0.0) - Y = texture2D(yuvTexture, qt_TexCoord).b; // odd so choose Y1 - else - Y = texture2D(yuvTexture, qt_TexCoord).r; // even so choose Y0 - mediump float Cb = texture2D(yuvTexture, qt_TexCoord).g; - mediump float Cr = texture2D(yuvTexture, qt_TexCoord).a; + mediump vec3 YUV = vec3(texture2D(yTexture, qt_TexCoord).r, texture2D(uvTexture, qt_TexCoord).ga); - mediump vec4 color = vec4(Y, Cb, Cr, 1.0); - gl_FragColor = colorMatrix * color * opacity; + gl_FragColor = colorMatrix * vec4(YUV, 1.0) * opacity; } |