1 files changed, 36 insertions, 0 deletions
diff --git a/src/apps/qcam/assets/shader/YUV_3_planes.frag b/src/apps/qcam/assets/shader/YUV_3_planes.frag
new file mode 100644
index 00000000..8f788e90
--- /dev/null
+++ b/src/apps/qcam/assets/shader/YUV_3_planes.frag
@@ -0,0 +1,36 @@
+/* SPDX-License-Identifier: LGPL-2.1-or-later */
+/*
+ * Copyright (C) 2020, Linaro
+ *
+ * YUV_3_planes_UV.frag - Fragment shader code for YUV420 format
+ */
+
+#ifdef GL_ES
+precision mediump float;
+#endif
+
+varying vec2 textureOut;
+uniform sampler2D tex_y;
+uniform sampler2D tex_u;
+uniform sampler2D tex_v;
+
+const mat3 yuv2rgb_matrix = mat3(
+	YUV2RGB_MATRIX
+);
+
+const vec3 yuv2rgb_offset = vec3(
+	YUV2RGB_Y_OFFSET / 255.0, 128.0 / 255.0, 128.0 / 255.0
+);
+
+void main(void)
+{
+	vec3 yuv;
+
+	yuv.x = texture2D(tex_y, textureOut).r;
+	yuv.y = texture2D(tex_u, textureOut).r;
+	yuv.z = texture2D(tex_v, textureOut).r;
+
+	vec3 rgb = yuv2rgb_matrix * (yuv - yuv2rgb_offset);
+
+	gl_FragColor = vec4(rgb, 1.0);
+}