From 84ad104499d9efc0253dae1a60ee070ed375ad95 Mon Sep 17 00:00:00 2001 From: Laurent Pinchart Date: Thu, 20 Oct 2022 00:44:55 +0300 Subject: Move test applications to src/apps/ The cam and qcam test application share code, currently through a crude hack that references the cam source files directly from the qcam meson.build file. To prepare for the introduction of hosting that code in a static library, move all applications to src/apps/. Signed-off-by: Laurent Pinchart Reviewed-by: Paul Elder Reviewed-by: Kieran Bingham --- src/qcam/assets/shader/bayer_8.frag | 107 ------------------------------------ 1 file changed, 107 deletions(-) delete mode 100644 src/qcam/assets/shader/bayer_8.frag (limited to 'src/qcam/assets/shader/bayer_8.frag') diff --git a/src/qcam/assets/shader/bayer_8.frag b/src/qcam/assets/shader/bayer_8.frag deleted file mode 100644 index 7e35ca88..00000000 --- a/src/qcam/assets/shader/bayer_8.frag +++ /dev/null @@ -1,107 +0,0 @@ -/* SPDX-License-Identifier: BSD-2-Clause */ -/* -From http://jgt.akpeters.com/papers/McGuire08/ - -Efficient, High-Quality Bayer Demosaic Filtering on GPUs - -Morgan McGuire - -This paper appears in issue Volume 13, Number 4. ---------------------------------------------------------- -Copyright (c) 2008, Morgan McGuire. All rights reserved. - -Modified by Linaro Ltd to integrate it into libcamera. -Copyright (C) 2021, Linaro -*/ - -//Pixel Shader -#ifdef GL_ES -precision mediump float; -#endif - -/** Monochrome RGBA or GL_LUMINANCE Bayer encoded texture.*/ -uniform sampler2D tex_y; -varying vec4 center; -varying vec4 yCoord; -varying vec4 xCoord; - -void main(void) { - #define fetch(x, y) texture2D(tex_y, vec2(x, y)).r - - float C = texture2D(tex_y, center.xy).r; // ( 0, 0) - const vec4 kC = vec4( 4.0, 6.0, 5.0, 5.0) / 8.0; - - // Determine which of four types of pixels we are on. - vec2 alternate = mod(floor(center.zw), 2.0); - - vec4 Dvec = vec4( - fetch(xCoord[1], yCoord[1]), // (-1,-1) - fetch(xCoord[1], yCoord[2]), // (-1, 1) - fetch(xCoord[2], yCoord[1]), // ( 1,-1) - fetch(xCoord[2], yCoord[2])); // ( 1, 1) - - vec4 PATTERN = (kC.xyz * C).xyzz; - - // Can also be a dot product with (1,1,1,1) on hardware where that is - // specially optimized. - // Equivalent to: D = Dvec[0] + Dvec[1] + Dvec[2] + Dvec[3]; - Dvec.xy += Dvec.zw; - Dvec.x += Dvec.y; - - vec4 value = vec4( - fetch(center.x, yCoord[0]), // ( 0,-2) - fetch(center.x, yCoord[1]), // ( 0,-1) - fetch(xCoord[0], center.y), // (-2, 0) - fetch(xCoord[1], center.y)); // (-1, 0) - - vec4 temp = vec4( - fetch(center.x, yCoord[3]), // ( 0, 2) - fetch(center.x, yCoord[2]), // ( 0, 1) - fetch(xCoord[3], center.y), // ( 2, 0) - fetch(xCoord[2], center.y)); // ( 1, 0) - - // Even the simplest compilers should be able to constant-fold these to - // avoid the division. - // Note that on scalar processors these constants force computation of some - // identical products twice. - const vec4 kA = vec4(-1.0, -1.5, 0.5, -1.0) / 8.0; - const vec4 kB = vec4( 2.0, 0.0, 0.0, 4.0) / 8.0; - const vec4 kD = vec4( 0.0, 2.0, -1.0, -1.0) / 8.0; - - // Conserve constant registers and take advantage of free swizzle on load - #define kE (kA.xywz) - #define kF (kB.xywz) - - value += temp; - - // There are five filter patterns (identity, cross, checker, - // theta, phi). Precompute the terms from all of them and then - // use swizzles to assign to color channels. - // - // Channel Matches - // x cross (e.g., EE G) - // y checker (e.g., EE B) - // z theta (e.g., EO R) - // w phi (e.g., EO R) - #define A (value[0]) - #define B (value[1]) - #define D (Dvec.x) - #define E (value[2]) - #define F (value[3]) - - // Avoid zero elements. On a scalar processor this saves two MADDs - // and it has no effect on a vector processor. - PATTERN.yzw += (kD.yz * D).xyy; - - PATTERN += (kA.xyz * A).xyzx + (kE.xyw * E).xyxz; - PATTERN.xw += kB.xw * B; - PATTERN.xz += kF.xz * F; - - gl_FragColor.rgb = (alternate.y == 0.0) ? - ((alternate.x == 0.0) ? - vec3(C, PATTERN.xy) : - vec3(PATTERN.z, C, PATTERN.w)) : - ((alternate.x == 0.0) ? - vec3(PATTERN.w, C, PATTERN.z) : - vec3(PATTERN.yx, C)); -} -- cgit v1.2.1