SL-18869 Touch up -- Prune "post_pos" from shadow shaders that don't need it and fix non-standard gl_Position z values

18 files changed, 9 insertions, 373 deletions

diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaMaskShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaMaskShadowF.glsl
deleted file mode 100644
index 26d23aec79..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaMaskShadowF.glsl
+++ /dev/null
@@ -1,60 +0,0 @@
-/** 
- * @file attachmentAlphaMaskShadowF.glsl
- *
- * $LicenseInfo:firstyear=2005&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2005, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-
-uniform sampler2D diffuseMap;
-
-VARYING vec4 post_pos;
-VARYING vec2 vary_texcoord0;
-VARYING float pos_w;
-VARYING float target_pos_x;
-VARYING vec4 vertex_color;
-
-void main() 
-{
-	float alpha = texture2D(diffuseMap, vary_texcoord0.xy).a;
-
-	if (alpha < 0.05) // treat as totally transparent
-	{
-		discard;
-	}
-
-	if (alpha < minimum_alpha) // treat as semi-transparent
-	{
-	  //if (fract(0.5*floor(target_pos_x / pos_w )) < 0.25)
-	  {
-	    discard;
-	  }
-	}
-
-	frag_color = vec4(1,1,1,1);
-}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl
deleted file mode 100644
index 57fd620cae..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowF.glsl
+++ /dev/null
@@ -1,63 +0,0 @@
-/** 
- * @file attachmentAlphaShadowF.glsl
- *
- * $LicenseInfo:firstyear=2005&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2005, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform float minimum_alpha;
-uniform sampler2D diffuseMap;
-
-VARYING float pos_w;
-VARYING float target_pos_x;
-
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
-VARYING vec2 vary_texcoord0;
-VARYING vec4 vertex_color;
-
-void main() 
-{
-	float alpha = texture2D(diffuseMap, vary_texcoord0.xy).a * vertex_color.a;
-
-	if (alpha < 0.05) // treat as totally transparent
-	{
-		discard;
-	}
-
-	if (alpha < minimum_alpha)
-	{
-	  if (fract(0.5*floor(target_pos_x / pos_w )) < 0.25)
-	  {
-	    discard;
-	  }
-	}
-
-	frag_color = vec4(1,1,1,1);
-}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowV.glsl
deleted file mode 100644
index a7bf4d7780..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentAlphaShadowV.glsl
+++ /dev/null
@@ -1,74 +0,0 @@
-/** 
- * @file attachmentAlphaShadowV.glsl
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-uniform mat4 projection_matrix;
-uniform mat4 modelview_matrix;
-uniform mat4 texture_matrix0;
-uniform float shadow_target_width;
-
-ATTRIBUTE vec4 diffuse_color;
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec3 normal;
-ATTRIBUTE vec2 texcoord0;
-
-mat4 getObjectSkinnedTransform();
-void passTextureIndex();
-
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-VARYING vec2 vary_texcoord0;
-VARYING float pos_w;
-VARYING float target_pos_x;
-VARYING vec4 vertex_color;
-
-void main()
-{
-	//transform vertex
-	mat4 mat = getObjectSkinnedTransform();
-	
-	mat = modelview_matrix * mat;
-	vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
-
-	vec4 p = projection_matrix * vec4(pos, 1.0);
-
-	pos_w = p.w;
-
-	target_pos_x = 0.5 * (shadow_target_width - 1.0) * pos.x;
-
-	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
-
-	vertex_color = diffuse_color;
-
-#if !defined(DEPTH_CLAMP)
-	p.z = max(p.z, -p.w+0.01);
-    post_pos = p;
-	gl_Position = p;
-#else
-	gl_Position = p;
-#endif
-
-	passTextureIndex();
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
deleted file mode 100644
index 8e9a5fcd41..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowF.glsl
+++ /dev/null
@@ -1,41 +0,0 @@
-/** 
- * @file avatarShadowF.glsl
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-/*[EXTRA_CODE_HERE]*/
-
-#ifdef DEFINE_GL_FRAGCOLOR
-out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
-
-uniform sampler2D diffuseMap;
-
-VARYING vec2 vary_texcoord0;
-
-void main() 
-{
-	frag_color = vec4(1,1,1,1);
-}
-
diff --git a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl
deleted file mode 100644
index 0fa0edfd67..0000000000
--- a/indra/newview/app_settings/shaders/class1/deferred/attachmentShadowV.glsl
+++ /dev/null
@@ -1,50 +0,0 @@
-/** 
- * @file attachmentShadowV.glsl
- * $LicenseInfo:firstyear=2007&license=viewerlgpl$
- * Second Life Viewer Source Code
- * Copyright (C) 2007, Linden Research, Inc.
- * 
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Lesser General Public
- * License as published by the Free Software Foundation;
- * version 2.1 of the License only.
- * 
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
- * Lesser General Public License for more details.
- * 
- * You should have received a copy of the GNU Lesser General Public
- * License along with this library; if not, write to the Free Software
- * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
- * 
- * Linden Research, Inc., 945 Battery Street, San Francisco, CA  94111  USA
- * $/LicenseInfo$
- */
-
-uniform mat4 projection_matrix;
-uniform mat4 modelview_matrix;
-uniform mat4 texture_matrix0;
-
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec2 texcoord0;
-
-mat4 getObjectSkinnedTransform();
-
-void main()
-{
-	//transform vertex
-	mat4 mat = getObjectSkinnedTransform();
-	
-	mat = modelview_matrix * mat;
-	vec3 pos = (mat*vec4(position.xyz, 1.0)).xyz;
-	
-
-	vec4 p = projection_matrix * vec4(pos, 1.0);
-#if !defined(DEPTH_CLAMP)
-	p.z = max(p.z, -p.w+0.01);
-	gl_Position = p;
-#else
-	gl_Position = p;
-#endif
-}
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaMaskShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaMaskShadowF.glsl
index 407ee39fbb..44f67899e4 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaMaskShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaMaskShadowF.glsl
@@ -32,10 +32,6 @@ out vec4 frag_color;
 uniform float minimum_alpha;
 uniform sampler2D diffuseMap;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
 VARYING float target_pos_x;
 VARYING float pos_w;
 VARYING vec2 vary_texcoord0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowF.glsl
index cfebc7bc66..9a0024ede9 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowF.glsl
@@ -33,10 +33,6 @@ uniform float minimum_alpha;
 
 uniform sampler2D diffuseMap;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
 VARYING float pos_w;
 VARYING float target_pos_x;
 VARYING vec2 vary_texcoord0;
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowV.glsl
index 40ac7b1f95..dfe7077db5 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarAlphaShadowV.glsl
@@ -34,9 +34,6 @@ ATTRIBUTE vec3 position;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec2 texcoord0;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
 VARYING float pos_w;
 VARYING float target_pos_x;
 VARYING vec2 vary_texcoord0;
@@ -66,13 +63,7 @@ void main()
 
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 
-#if !defined(DEPTH_CLAMP)
-	post_pos = pos;
-
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
 
 	passTextureIndex();
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
index 57c4bafd79..0c386ade6c 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowF.glsl
@@ -25,18 +25,10 @@
 
 /*[EXTRA_CODE_HERE]*/ 
 
-#ifdef DEFINE_GL_FRAGCOLOR
 out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
 
 uniform sampler2D diffuseMap;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
 void main() 
 {
 	frag_color = vec4(1,1,1,1);
diff --git a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowV.glsl
index 91b25613e0..ac8a483a6a 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/avatarShadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/avatarShadowV.glsl
@@ -31,10 +31,6 @@ ATTRIBUTE vec3 position;
 ATTRIBUTE vec3 normal;
 ATTRIBUTE vec2 texcoord0;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
 void main()
 {
 	vec4 pos;
@@ -53,13 +49,7 @@ void main()
 	norm = normalize(norm);
 	
 	pos = projection_matrix * pos;
-#if !defined(DEPTH_CLAMP)
-	post_pos = pos;
-
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
 }
 
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskSkinnedV.glsl
index 2b17aea75a..61c9e60744 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskSkinnedV.glsl
@@ -57,11 +57,7 @@ void main()
 
 	post_pos = pos;
 
-#if !defined(DEPTH_CLAMP)
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
 	
 	passTextureIndex();
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
index b6a0f0b165..40f8fc9894 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowAlphaMaskV.glsl
@@ -47,11 +47,7 @@ void main()
 
 	post_pos = pos;
 
-#if !defined(DEPTH_CLAMP)
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
 	
 	passTextureIndex();
 
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowCubeV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowCubeV.glsl
index 0e74d2eb8a..9608e89169 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowCubeV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowCubeV.glsl
@@ -27,10 +27,6 @@ uniform mat4 modelview_projection_matrix;
 
 ATTRIBUTE vec3 position;
 
-#if !defined(DEPTH_CLAMP)
-VARYING vec4 post_pos;
-#endif
-
 uniform vec3 box_center;
 uniform vec3 box_size;
 
@@ -40,11 +36,5 @@ void main()
 	vec3 p = position*box_size+box_center;
 	vec4 pos = modelview_projection_matrix*vec4(p.xyz, 1.0);
 
-#if !defined(DEPTH_CLAMP)
-	post_pos = pos;
-
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowSkinnedV.glsl
index bdf8e0854d..186ba49969 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowSkinnedV.glsl
@@ -28,8 +28,6 @@ uniform mat4 projection_matrix;
 
 ATTRIBUTE vec3 position;
 
-VARYING vec4 post_pos;
-
 mat4 getObjectSkinnedTransform();
 
 void main()
@@ -41,12 +39,5 @@ void main()
 	vec4 pos = (mat*vec4(position.xyz, 1.0));
 	pos = projection_matrix*pos;
 
-	post_pos = pos;
-
-#if !defined(DEPTH_CLAMP)
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
-#else
 	gl_Position = pos;
-#endif
-
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
index e83cda89ef..bd62954ff8 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/shadowV.glsl
@@ -29,5 +29,6 @@ in vec3 position;
 
 void main()
 {
+	//transform vertex
 	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
index 802179a401..c850a39d6f 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeShadowF.glsl
@@ -25,18 +25,14 @@
 
 /*[EXTRA_CODE_HERE]*/
 
-#ifdef DEFINE_GL_FRAGCOLOR
+
 out vec4 frag_color;
-#else
-#define frag_color gl_FragColor
-#endif
 
 uniform float minimum_alpha;
 
 uniform sampler2D diffuseMap;
 
-VARYING vec4 post_pos;
-VARYING vec2 vary_texcoord0;
+in vec2 vary_texcoord0;
 
 void main() 
 {
@@ -48,5 +44,4 @@ void main()
 	}
 
 	frag_color = vec4(1,1,1,1);
-	
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeShadowSkinnedV.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeShadowSkinnedV.glsl
index d9ca6d3a46..5a7cf369b5 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeShadowSkinnedV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeShadowSkinnedV.glsl
@@ -30,8 +30,7 @@ uniform mat4 projection_matrix;
 ATTRIBUTE vec3 position;
 ATTRIBUTE vec2 texcoord0;
 
-VARYING vec4 post_pos;
-VARYING vec2 vary_texcoord0;
+out vec2 vary_texcoord0;
 
 mat4 getObjectSkinnedTransform();
 
@@ -43,11 +42,7 @@ void main()
 	mat = modelview_matrix * mat;
 	
 	vec4 pos = mat * vec4(position.xyz, 1.0);
-    pos = projection_matrix * pos;
-	
-	post_pos = pos;
-	
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
+    gl_Position = projection_matrix * pos;
 	
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 }
diff --git a/indra/newview/app_settings/shaders/class1/deferred/treeShadowV.glsl b/indra/newview/app_settings/shaders/class1/deferred/treeShadowV.glsl
index e472a75304..3102c870fc 100644
--- a/indra/newview/app_settings/shaders/class1/deferred/treeShadowV.glsl
+++ b/indra/newview/app_settings/shaders/class1/deferred/treeShadowV.glsl
@@ -26,20 +26,15 @@
 uniform mat4 texture_matrix0;
 uniform mat4 modelview_projection_matrix;
  
-ATTRIBUTE vec3 position;
-ATTRIBUTE vec2 texcoord0;
+in vec3 position;
+in vec2 texcoord0;
 
-VARYING vec4 post_pos;
-VARYING vec2 vary_texcoord0;
+out vec2 vary_texcoord0;
 
 void main()
 {
 	//transform vertex
-	vec4 pos = modelview_projection_matrix*vec4(position.xyz, 1.0);
-	
-	post_pos = pos;
-	
-	gl_Position = vec4(pos.x, pos.y, pos.w*0.5, pos.w);
+	gl_Position = modelview_projection_matrix*vec4(position.xyz, 1.0);
 	
 	vary_texcoord0 = (texture_matrix0 * vec4(texcoord0,0,1)).xy;
 }