From a33eccf6e236d0dfb223b8fb759ad23ea5620ec4 Mon Sep 17 00:00:00 2001
From: Cedric BAIL <cedric.bail@free.fr>
Date: Wed, 5 Oct 2011 10:16:25 +0000
Subject: [PATCH] evas: fix shader for nv12.

SVN revision: 63835
---
 .../src/modules/engines/gl_common/Makefile.am | 19 ++++++++++++-
 .../gl_common/shader/compile-s3c6410.sh       |  4 +++
 .../engines/gl_common/shader/nv12_frag.shd    | 27 +++++++++++++++++++
 .../gl_common/shader/nv12_nomul_frag.shd      | 27 +++++++++++++++++++
 .../gl_common/shader/nv12_nomul_vert.shd      |  2 +-
 .../engines/gl_common/shader/nv12_vert.shd    |  2 +-
 6 files changed, 78 insertions(+), 3 deletions(-)
 create mode 100644 legacy/evas/src/modules/engines/gl_common/shader/nv12_frag.shd
 create mode 100644 legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_frag.shd

diff --git a/legacy/evas/src/modules/engines/gl_common/Makefile.am b/legacy/evas/src/modules/engines/gl_common/Makefile.am
index aeae77da48..15acc02dd8 100644
--- a/legacy/evas/src/modules/engines/gl_common/Makefile.am
+++ b/legacy/evas/src/modules/engines/gl_common/Makefile.am
@@ -143,5 +143,22 @@ shader/filter_sepia_bgra_nomul.shd \
 shader/filter_blur.shd \
 shader/filter_blur_nomul.shd \
 shader/filter_blur_bgra.shd \
-shader/filter_blur_bgra_nomul.shd
+shader/filter_blur_bgra_nomul.shd \
+shader/nv12_frag.h \
+shader/nv12_frag.shd \
+shader/nv12_nomul_frag.h \
+shader/nv12_nomul_frag.shd \
+shader/nv12_nomul_vert.h \
+shader/nv12_nomul_vert.shd \
+shader/nv12_vert.h \
+shader/nv12_vert.shd \
+shader/yuy2_frag.h \
+shader/yuy2_frag.shd \
+shader/yuy2_nomul_frag.h \
+shader/yuy2_nomul_frag.shd \
+shader/yuy2_nomul_vert.h \
+shader/yuy2_nomul_vert.shd \
+shader/yuy2_vert.h \
+shader/yuy2_vert.shd
+
 
diff --git a/legacy/evas/src/modules/engines/gl_common/shader/compile-s3c6410.sh b/legacy/evas/src/modules/engines/gl_common/shader/compile-s3c6410.sh
index 90ec941603..450e5def29 100755
--- a/legacy/evas/src/modules/engines/gl_common/shader/compile-s3c6410.sh
+++ b/legacy/evas/src/modules/engines/gl_common/shader/compile-s3c6410.sh
@@ -40,4 +40,8 @@ compile yuv
 compile yuv_nomul
 compile tex
 compile tex_nomul
+compile nv12
+compile nv12_nomul
+compile yuy2
+compile yuy2_nomul
 ## FIXME: compile filter_*
diff --git a/legacy/evas/src/modules/engines/gl_common/shader/nv12_frag.shd b/legacy/evas/src/modules/engines/gl_common/shader/nv12_frag.shd
new file mode 100644
index 0000000000..b3ee7800b7
--- /dev/null
+++ b/legacy/evas/src/modules/engines/gl_common/shader/nv12_frag.shd
@@ -0,0 +1,27 @@
+#ifdef GL_ES
+precision mediump float;
+#endif
+uniform sampler2D tex, texuv;
+varying vec4 col;
+varying vec2 tex_c, tex_cuv;
+void main()
+{
+  float y,u,v,vmu,r,g,b;
+  y=texture2D(tex,tex_c).g;
+  u=texture2D(texuv,tex_cuv).g;
+  v=texture2D(texuv,tex_cuv).a;
+
+  u=u-0.5;
+  v=v-0.5;
+  vmu=v*0.813+u*0.391;
+  u=u*2.018;
+  v=v*1.596;
+  y=(y-0.062)*1.164;
+
+  r=y+v;
+  g=y-vmu;
+  b=y+u;
+
+  gl_FragColor=vec4(r,g,b,1.0) * col;
+}
+
diff --git a/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_frag.shd b/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_frag.shd
new file mode 100644
index 0000000000..9d325b65ee
--- /dev/null
+++ b/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_frag.shd
@@ -0,0 +1,27 @@
+#ifdef GL_ES
+precision mediump float;
+#endif
+uniform sampler2D tex, texuv;
+varying vec2 tex_c, tex_cuv;
+void main()
+{
+  float y,u,v,vmu,r,g,b;
+  y=texture2D(tex,tex_c).g;
+  u=texture2D(texuv,tex_cuv).g;
+  v=texture2D(texuv,tex_cuv).a;
+
+  u=u-0.5;
+  v=v-0.5;
+  vmu=v*0.813+u*0.391;
+  u=u*2.018;
+  v=v*1.596;
+  y=(y-0.062)*1.164;
+
+  r=y+v;
+  g=y-vmu;
+  b=y+u;
+
+  gl_FragColor=vec4(r,g,b,1.0);
+}
+
+
diff --git a/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_vert.shd b/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_vert.shd
index b61c3c3321..2d7567bb53 100644
--- a/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_vert.shd
+++ b/legacy/evas/src/modules/engines/gl_common/shader/nv12_nomul_vert.shd
@@ -10,5 +10,5 @@ void main()
 {
    gl_Position = mvp * vertex;
    tex_y = tex_coord;
-   tex_cuv = tex_coord2;
+   tex_cuv = tex_coord2 * 0.5;
 }
diff --git a/legacy/evas/src/modules/engines/gl_common/shader/nv12_vert.shd b/legacy/evas/src/modules/engines/gl_common/shader/nv12_vert.shd
index 68934e905a..f8204c7f0f 100644
--- a/legacy/evas/src/modules/engines/gl_common/shader/nv12_vert.shd
+++ b/legacy/evas/src/modules/engines/gl_common/shader/nv12_vert.shd
@@ -12,5 +12,5 @@ void main()
    gl_Position = mvp * vertex;
    col = color;
    tex_y = tex_coord;
-   tex_cuv = tex_coord2;
+   tex_cuv = tex_coord2 * 0.5;
 }