From 440028d6c9a2e98234a71fee79c55791e1d2af2f Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Wed, 16 Sep 2020 16:23:27 +0300 Subject: qcam: viewfinder_gl: Rename shader files MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Rename shader files to prepare for packed YUYV support: - The NV prefix isn't a good match for packed (or for 3-planar) formats, replace it with a YUV prefix - Use .frag and .vert extensions to differentiate between fragment and vertex shaders Signed-off-by: Laurent Pinchart Reviewed-by: Niklas Söderlund --- src/qcam/assets/shader/YUV_2_planes_VU.frag | 32 +++++++++++++++++++++++++++++ 1 file changed, 32 insertions(+) create mode 100644 src/qcam/assets/shader/YUV_2_planes_VU.frag (limited to 'src/qcam/assets/shader/YUV_2_planes_VU.frag') diff --git a/src/qcam/assets/shader/YUV_2_planes_VU.frag b/src/qcam/assets/shader/YUV_2_planes_VU.frag new file mode 100644 index 00000000..f4a5a5ac --- /dev/null +++ b/src/qcam/assets/shader/YUV_2_planes_VU.frag @@ -0,0 +1,32 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +/* + * Copyright (C) 2020, Linaro + * + * YUV_2_planes_VU.frag - Fragment shader code for NV21, NV61 and NV42 formats + */ + +#ifdef GL_ES +precision mediump float; +#endif + +varying vec2 textureOut; +uniform sampler2D tex_y; +uniform sampler2D tex_u; + +void main(void) +{ + vec3 yuv; + vec3 rgb; + mat3 yuv2rgb_bt601_mat = mat3( + vec3(1.164, 1.164, 1.164), + vec3(0.000, -0.392, 2.017), + vec3(1.596, -0.813, 0.000) + ); + + yuv.x = texture2D(tex_y, textureOut).r - 0.063; + yuv.y = texture2D(tex_u, textureOut).g - 0.500; + yuv.z = texture2D(tex_u, textureOut).r - 0.500; + + rgb = yuv2rgb_bt601_mat * yuv; + gl_FragColor = vec4(rgb, 1.0); +} -- cgit v1.2.1