HDR: Use gl_VertexID instead of the MVP matrix in fullscreen passes

Compositor/HDR/hdr.xml

@@ -1301,7 +1301,7 @@
   </pass>
   <pass include="debug-pass.xml">
     <name>debug-depth</name>
-    <effect>Effects/HDR/visualize-depth</effect>
+    <effect>Effects/HDR/gbuffer-debug-depth</effect>
     <geometry>
       <left>0.8</left>
       <bottom>0.8</bottom>

Effects/HDR/adapt-luminance.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/adapt-luminance.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-notexcoord.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/adapt-luminance.frag</fragment-shader>
       </program>
       <uniform>

Effects/HDR/copy-prev-luminance.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/adapt-luminance.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-notexcoord.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/copy-prev-luminance.frag</fragment-shader>
       </program>
       <uniform>

Effects/HDR/gbuffer-debug-color.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/trivial.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-quad.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/gbuffer-debug-color.frag</fragment-shader>
       </program>
       <uniform>

Effects/HDR/gbuffer-debug-depth.eff

@@ -1,15 +1,15 @@
 <?xml version="1.0" encoding="utf-8"?>
 <PropertyList>
-  <name>Effects/HDR/visualize-depth</name>
+  <name>Effects/HDR/gbuffer-debug-depth</name>
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/trivial.vert</vertex-shader>
-        <fragment-shader>Shaders/HDR/visualize-depth.frag</fragment-shader>
+        <vertex-shader>Shaders/HDR/trivial-quad.vert</vertex-shader>
+        <fragment-shader>Shaders/HDR/gbuffer-debug-depth.frag</fragment-shader>
         <fragment-shader>Shaders/HDR/gbuffer-include.frag</fragment-shader>
       </program>
       <uniform>
-        <name>tex</name>
+        <name>depth_tex</name>
         <type>sampler-2d</type>
         <value type="int">0</value>
       </uniform>

Effects/HDR/gbuffer-debug-matid.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/trivial.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-quad.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/gbuffer-debug-matid.frag</fragment-shader>
       </program>
       <uniform>

Effects/HDR/gbuffer-debug-normal.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/trivial.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-quad.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/gbuffer-debug-normal.frag</fragment-shader>
       </program>
       <uniform>

Effects/HDR/gbuffer-debug-orm.eff

@@ -4,7 +4,7 @@
   <technique n="1">
     <pass>
       <program>
-        <vertex-shader>Shaders/HDR/trivial.vert</vertex-shader>
+        <vertex-shader>Shaders/HDR/trivial-quad.vert</vertex-shader>
         <fragment-shader>Shaders/HDR/gbuffer-debug-orm.frag</fragment-shader>
       </program>
       <uniform>

Effects/chrome.eff

@@ -89,4 +89,20 @@
       </program>
     </pass>
   </technique>
+  <technique n="119">
+    <scheme>hdr-shadow</scheme>
+    <pass>
+      <color-mask type="vec4d">0 0 0 0</color-mask>
+      <cull-face>back</cull-face>
+      <blend>0</blend>
+      <polygon-offset>
+        <factor>1.1</factor>
+        <units>4.0</units>
+      </polygon-offset>
+      <program>
+        <vertex-shader>Shaders/HDR/geometry-shadow.vert</vertex-shader>
+        <fragment-shader>Shaders/HDR/geometry-shadow.frag</fragment-shader>
+      </program>
+    </pass>
+  </technique>
 </PropertyList>

Shaders/HDR/envmap-prefilter.vert

@@ -1,8 +1,5 @@
 #version 330 core
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec3 cubemapCoord0;
 out vec3 cubemapCoord1;
 out vec3 cubemapCoord2;
@@ -10,20 +7,18 @@ out vec3 cubemapCoord3;
 out vec3 cubemapCoord4;
 out vec3 cubemapCoord5;
 
-uniform mat4 osg_ModelViewProjectionMatrix;
-
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    vec2 texCoord = multiTexCoord0.xy * 2.0 - 1.0;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    gl_Position = vec4(pos, 0.0, 1.0);
     // Map the quad texture coordinates to a direction vector to sample
     // the cubemap. This assumes that we are using the weird left-handed
     // orientations given by the OpenGL spec.
     // See https://www.khronos.org/opengl/wiki/Cubemap_Texture#Upload_and_orientation
-    cubemapCoord0 = vec3(1.0, -texCoord.y, -texCoord.x);
-    cubemapCoord1 = vec3(-1.0, -texCoord.y, texCoord.x);
-    cubemapCoord2 = vec3(texCoord.x, 1.0, texCoord.y);
-    cubemapCoord3 = vec3(texCoord.x, -1.0, -texCoord.y);
-    cubemapCoord4 = vec3(texCoord.x, -texCoord.y, 1.0);
-    cubemapCoord5 = vec3(-texCoord.x, -texCoord.y, -1.0);
+    cubemapCoord0 = vec3(1.0, -pos.y, -pos.x);
+    cubemapCoord1 = vec3(-1.0, -pos.y, pos.x);
+    cubemapCoord2 = vec3(pos.x, 1.0, pos.y);
+    cubemapCoord3 = vec3(pos.x, -1.0, -pos.y);
+    cubemapCoord4 = vec3(pos.x, -pos.y, 1.0);
+    cubemapCoord5 = vec3(-pos.x, -pos.y, -1.0);
 }

Shaders/HDR/fxaa.vert

@@ -1,22 +1,20 @@
 #version 330 core
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec2 texCoord;
 out vec4 posPos;
 
-uniform mat4 osg_ModelViewProjectionMatrix;
-
 uniform sampler2D color_tex;
 
 const float FXAA_SUBPIX_SHIFT = 1.0/4.0;
 
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    texCoord = multiTexCoord0.st;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    texCoord = pos * 0.5 + 0.5;
+
     vec2 rcpFrame = 1.0 / textureSize(color_tex, 0);
-    posPos.xy = multiTexCoord0.xy;
-    posPos.zw = multiTexCoord0.xy - (rcpFrame * (0.5 + FXAA_SUBPIX_SHIFT));
+    posPos.xy = texCoord;
+    posPos.zw = texCoord - (rcpFrame * (0.5 + FXAA_SUBPIX_SHIFT));
+
+    gl_Position = vec4(pos, 0.0, 1.0);
 }

Shaders/HDR/gbuffer-debug-depth.frag

@@ -0,0 +1,15 @@
+#version 330 core
+
+out vec4 fragColor;
+
+in vec2 texCoord;
+
+uniform sampler2D depth_tex;
+
+float linearizeDepth(float depth);
+
+void main()
+{
+    float depth = texture(depth_tex, texCoord).r;
+    fragColor = vec4(vec3(linearizeDepth(depth)), 1.0);
+}

Shaders/HDR/smaa-blending-weight-calculation.vert

@@ -39,23 +39,19 @@
 
 #define mad(a, b, c) (a * b + c)
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec2 texCoord;
 out vec2 pixCoord;
 out vec4 vOffset[3];
 
-uniform mat4 osg_ModelViewProjectionMatrix;
-
 uniform vec4 fg_Viewport;
 
 #define SMAA_RT_METRICS vec4(1.0 / fg_Viewport.z, 1.0 / fg_Viewport.w, fg_Viewport.z, fg_Viewport.w)
 
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    texCoord = multiTexCoord0.st;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    texCoord = pos * 0.5 + 0.5;
+    gl_Position = vec4(pos, 0.0, 1.0);
 
     pixCoord = texCoord * SMAA_RT_METRICS.zw;
 

Shaders/HDR/smaa-edge-detection.vert

@@ -37,21 +37,18 @@
 
 #define mad(a, b, c) (a * b + c)
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec2 texCoord;
 out vec4 vOffset[3];
 
-uniform mat4 osg_ModelViewProjectionMatrix;
 uniform vec4 fg_Viewport;
 
 #define SMAA_RT_METRICS vec4(1.0 / fg_Viewport.z, 1.0 / fg_Viewport.w, fg_Viewport.z, fg_Viewport.w)
 
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    texCoord = multiTexCoord0.st;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    texCoord = pos * 0.5 + 0.5;
+    gl_Position = vec4(pos, 0.0, 1.0);
 
     vOffset[0] = mad(SMAA_RT_METRICS.xyxy, vec4(-1.0, 0.0, 0.0, -1.0), texCoord.xyxy);
     vOffset[1] = mad(SMAA_RT_METRICS.xyxy, vec4( 1.0, 0.0, 0.0,  1.0), texCoord.xyxy);

Shaders/HDR/smaa-neighborhood-blending.vert

@@ -37,21 +37,18 @@
 
 #define mad(a, b, c) (a * b + c)
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec2 texCoord;
 out vec4 vOffset;
 
-uniform mat4 osg_ModelViewProjectionMatrix;
 uniform vec4 fg_Viewport;
 
 #define SMAA_RT_METRICS vec4(1.0 / fg_Viewport.z, 1.0 / fg_Viewport.w, fg_Viewport.z, fg_Viewport.w)
 
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    texCoord = multiTexCoord0.st;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    texCoord = pos * 0.5 + 0.5;
+    gl_Position = vec4(pos, 0.0, 1.0);
 
     vOffset = mad(SMAA_RT_METRICS.xyxy, vec4(1.0, 0.0, 0.0, 1.0), texCoord.xyxy);
 }

Shaders/HDR/trivial-notexcoord.vert

@@ -0,0 +1,7 @@
+#version 330 core
+
+void main()
+{
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    gl_Position = vec4(pos, 0.0, 1.0);
+}

Shaders/HDR/trivial-quad.vert

@@ -1,10 +1,14 @@
 #version 330 core
 
 layout(location = 0) in vec4 pos;
+layout(location = 3) in vec4 multiTexCoord0;
+
+out vec2 texCoord;
 
 uniform mat4 osg_ModelViewProjectionMatrix;
 
 void main()
 {
     gl_Position = osg_ModelViewProjectionMatrix * pos;
+    texCoord = multiTexCoord0.st;
 }

Shaders/HDR/trivial.vert

@@ -1,14 +1,10 @@
 #version 330 core
 
-layout(location = 0) in vec4 pos;
-layout(location = 3) in vec4 multiTexCoord0;
-
 out vec2 texCoord;
 
-uniform mat4 osg_ModelViewProjectionMatrix;
-
 void main()
 {
-    gl_Position = osg_ModelViewProjectionMatrix * pos;
-    texCoord = multiTexCoord0.st;
+    vec2 pos = vec2(gl_VertexID % 2, gl_VertexID / 2) * 4.0 - 1.0;
+    texCoord = pos * 0.5 + 0.5;
+    gl_Position = vec4(pos, 0.0, 1.0);
 }

Shaders/HDR/visualize-depth.frag

@@ -1,14 +0,0 @@
-#version 330 core
-
-out vec4 fragColor;
-
-in vec2 texCoord;
-
-uniform sampler2D tex;
-
-float linearizeDepth(float depth);
-
-void main()
-{
-    fragColor = vec4(linearizeDepth(texture(tex, texCoord).r));
-}