From c40a81ddf415ecb3f6974bff25df5f80c09a847c Mon Sep 17 00:00:00 2001
From: Geoffrey McRae <geoff@hostfission.com>
Date: Fri, 15 Jan 2021 11:57:02 +1100
Subject: [PATCH] [client] egl: remove no longer used yuv shader

---
 client/renderers/EGL/CMakeLists.txt          |  1 -
 client/renderers/EGL/desktop.c               | 15 ------
 client/renderers/EGL/shader/desktop_yuv.frag | 53 --------------------
 3 files changed, 69 deletions(-)
 delete mode 100644 client/renderers/EGL/shader/desktop_yuv.frag

diff --git a/client/renderers/EGL/CMakeLists.txt b/client/renderers/EGL/CMakeLists.txt
index 12935671..bc32619a 100644
--- a/client/renderers/EGL/CMakeLists.txt
+++ b/client/renderers/EGL/CMakeLists.txt
@@ -16,7 +16,6 @@ make_object(
 	EGL_SHADER
 	shader/desktop.vert
 	shader/desktop_rgb.frag
-	shader/desktop_yuv.frag
 	shader/cursor.vert
 	shader/cursor_rgb.frag
 	shader/cursor_mono.frag
diff --git a/client/renderers/EGL/desktop.c b/client/renderers/EGL/desktop.c
index f5c4aeeb..86517a10 100644
--- a/client/renderers/EGL/desktop.c
+++ b/client/renderers/EGL/desktop.c
@@ -126,15 +126,6 @@ bool egl_desktop_init(EGL_Desktop ** desktop, EGLDisplay * display)
     return false;
   }
 
-  if (!egl_init_desktop_shader(
-    &(*desktop)->shader_yuv,
-    b_shader_desktop_vert    , b_shader_desktop_vert_size,
-    b_shader_desktop_yuv_frag, b_shader_desktop_yuv_frag_size))
-  {
-    DEBUG_ERROR("Failed to initialize the yuv desktop shader");
-    return false;
-  }
-
   if (!egl_model_init(&(*desktop)->model))
   {
     DEBUG_ERROR("Failed to initialize the desktop model");
@@ -172,7 +163,6 @@ void egl_desktop_free(EGL_Desktop ** desktop)
 
   egl_texture_free(&(*desktop)->texture              );
   egl_shader_free (&(*desktop)->shader_generic.shader);
-  egl_shader_free (&(*desktop)->shader_yuv.shader    );
   egl_model_free  (&(*desktop)->model                );
 
   app_release_keybind(&(*desktop)->kbNV);
@@ -206,11 +196,6 @@ bool egl_desktop_setup(EGL_Desktop * desktop, const LG_RendererFormat format, bo
       desktop->shader = &desktop->shader_generic;
       break;
 
-    case FRAME_TYPE_YUV420:
-      pixFmt = EGL_PF_YUV420;
-      desktop->shader = &desktop->shader_yuv;
-      break;
-
     default:
       DEBUG_ERROR("Unsupported frame format");
       return false;
diff --git a/client/renderers/EGL/shader/desktop_yuv.frag b/client/renderers/EGL/shader/desktop_yuv.frag
deleted file mode 100644
index a0408670..00000000
--- a/client/renderers/EGL/shader/desktop_yuv.frag
+++ /dev/null
@@ -1,53 +0,0 @@
-#version 300 es
-
-in  highp vec2 uv;
-out highp vec4 color;
-
-uniform       int   nearest;
-uniform highp vec2  size;
-
-uniform       int   nv;
-uniform highp float nvGain;
-
-uniform sampler2D sampler1;
-uniform sampler2D sampler2;
-uniform sampler2D sampler3;
-
-void main()
-{
-  highp vec4 yuv;
-  if(nearest == 1)
-  {
-    yuv = vec4(
-      texture(sampler1, uv).r,
-      texture(sampler2, uv).r,
-      texture(sampler3, uv).r,
-      1.0
-    );
-  }
-  else
-  {
-    highp ivec2 px = ivec2(uv * size);
-    yuv = vec4(
-      texelFetch(sampler1, px, 0).r,
-      texelFetch(sampler2, px, 0).r,
-      texelFetch(sampler3, px, 0).r,
-      1.0
-    );
-  }
-  
-  highp mat4 yuv_to_rgb = mat4(
-    1.0,  0.0  ,  1.402, -0.701,
-    1.0, -0.344, -0.714,  0.529,
-    1.0,  1.772,  0.0  , -0.886,
-    1.0,  1.0  ,  1.0  ,  1.0
-  );
-  
-  color = yuv * yuv_to_rgb;
-  if (nv == 1)
-  {
-    highp float lumi = 1.0 - (0.2126 * color.r + 0.7152 * color.g + 0.0722 * color.b);
-    color *= 1.0 + lumi;
-    color *= nvGain;
-  }
-}