Used previous projection matrix to limit overblur

libraries/render-utils/src/DeferredFrameTransform.cpp

@@ -38,6 +38,9 @@ void DeferredFrameTransform::update(RenderArgs* args) {
 
     args->getViewFrustum().evalProjectionMatrix(frameTransformBuffer.projectionMono);
 
+	frameTransformBuffer.previousProjection[0] = frameTransformBuffer.projection[0];
+	frameTransformBuffer.previousProjection[1] = frameTransformBuffer.projection[1];
+
     // Running in stereo ?
     bool isStereo = args->isStereo();
     if (!isStereo) {

libraries/render-utils/src/DeferredFrameTransform.h

@@ -43,11 +43,14 @@ protected:
         glm::vec4 depthInfo;
         // Stereo info is { isStereoFrame, halfWidth }
         glm::vec4 stereoInfo{ 0.0 };
-        // Mono proj matrix or Left and Right proj matrix going from Mono Eye space to side clip space
+		// Mono proj matrix or Left and Right proj matrix going from Mono Eye space to side clip space
-        glm::mat4 projection[2];
+		glm::mat4 projection[2];
-        // Inverse proj matrix or Left and Right proj matrix going from Mono Eye space to side clip space
+		// Inverse proj matrix or Left and Right proj matrix going from Mono Eye space to side clip space
-        glm::mat4 invProjection[2];
+		glm::mat4 invProjection[2];
-        // THe mono projection for sure
+		// Mono proj matrix or Left and Right proj matrix going from Mono Eye space to side clip space of
+		// the previous frame
+		glm::mat4 previousProjection[2];
+		// THe mono projection for sure
         glm::mat4 projectionMono;
         // Inv View matrix from eye space (mono) to world space
         glm::mat4 invView;

libraries/render-utils/src/DeferredTransform.slh

@@ -32,6 +32,7 @@ struct DeferredFrameTransform {
     vec4 _stereoInfo;
     mat4 _projection[2];
     mat4 _invProjection[2];
+    mat4 _previousProjection[2];
     mat4 _projectionMono;
     mat4 _viewInverse;
     mat4 _view;

libraries/render-utils/src/MaterialTextures.slh

@@ -11,8 +11,6 @@
 <@if not MODEL_MATERIAL_TEXTURES_SLH@>
 <@def MODEL_MATERIAL_TEXTURES_SLH@>
 
-#define TAA_TEXTURE_LOD_BIAS    -1.0
-
 <@func declareMaterialTexMapArrayBuffer()@>
 
 const int MAX_TEXCOORDS = 2;
@@ -49,6 +47,8 @@ TexMapArray getTexMapArray() {
 
 <@func declareMaterialTextures(withAlbedo, withRoughness, withNormal, withMetallic, withEmissive, withOcclusion, withScattering)@>
 
+#define TAA_TEXTURE_LOD_BIAS    -1.0
+
 <@include gpu/TextureTable.slh@>
 
 #ifdef GPU_TEXTURE_TABLE_BINDLESS

libraries/render-utils/src/simple_opaque_web_browser.slf

@@ -15,6 +15,8 @@
 <@include gpu/Color.slh@>
 <@include DeferredBufferWrite.slh@>
 
+#define TAA_TEXTURE_LOD_BIAS    -1.0
+
 // the albedo texture
 uniform sampler2D originalTexture;
 
@@ -24,7 +26,7 @@ in vec4 _color;
 in vec2 _texCoord0;
 
 void main(void) {
-    vec4 texel = texture(originalTexture, _texCoord0.st);
+    vec4 texel = texture(originalTexture, _texCoord0.st, TAA_TEXTURE_LOD_BIAS);
     texel = color_sRGBAToLinear(texel);
     packDeferredFragmentUnlit(normalize(_normal), 1.0, _color.rgb * texel.rgb);
 }

libraries/render-utils/src/simple_transparent_web_browser.slf

@@ -15,6 +15,8 @@
 <@include gpu/Color.slh@>
 <@include DeferredBufferWrite.slh@>
 
+#define TAA_TEXTURE_LOD_BIAS    -1.0
+
 // the albedo texture
 uniform sampler2D originalTexture;
 
@@ -24,7 +26,7 @@ in vec4 _color;
 in vec2 _texCoord0;
 
 void main(void) {
-    vec4 texel = texture(originalTexture, _texCoord0.st);
+    vec4 texel = texture(originalTexture, _texCoord0.st, TAA_TEXTURE_LOD_BIAS);
     texel = color_sRGBAToLinear(texel);
     packDeferredFragmentTranslucent(
         normalize(_normal),

libraries/render-utils/src/velocityBuffer_cameraMotion.slf

@@ -32,7 +32,7 @@ void main(void) {
 	vec3 worldPos = (getViewInverse() * vec4(eyePos, 1.0)).xyz;
     
     vec3 prevEyePos = (getPreviousView() * vec4(worldPos, 1.0)).xyz;
-    vec4 prevClipPos = (frameTransform._projection[stereoSide.x] * vec4(prevEyePos, 1.0));
+    vec4 prevClipPos = (frameTransform._previousProjection[stereoSide.x] * vec4(prevEyePos, 1.0));
     vec2 prevUV =  0.5 * (prevClipPos.xy / prevClipPos.w) + vec2(0.5);
 
     //vec2 imageSize = getWidthHeight(0);