replacing glTRansform by gpu/Transform features

libraries/gpu/src/gpu/Context.h

@@ -33,8 +33,6 @@ public:
     public:
         Mat4 _model;
         Mat4 _modelInverse;
-        Mat4 _modelView;
-        Mat4 _modelViewInverseTranspose;
     };
 
     class TransformCamera {
@@ -42,6 +40,7 @@ public:
         Mat4 _projection;
         Mat4 _view;
         Mat4 _viewInverse;
+        Mat4 _projectionViewUntranslated;
     };
 
     template< typename T >

libraries/gpu/src/gpu/GLBackend.cpp

@@ -484,11 +484,10 @@ void GLBackend::updateTransform() {
         _transform._model.getInverseMatrix(_transform._transformObject._modelInverse);
     }
 
-    if (_transform._invalidView || _transform._invalidModel) {
+    if (_transform._invalidView || _transform._invalidProj) {
-        Transform mvx;
+        Mat4 viewUntranslated = _transform._transformCamera._view;
-        Transform::inverseMult(mvx, _transform._view, _transform._model);
+       // viewUntranslated[3] = Vec4(0.0f, 0.0f, 0.0f, 1.0f);
-        mvx.getMatrix(_transform._transformObject._modelView);
+        _transform._transformCamera._projectionViewUntranslated = _transform._transformCamera._projection * viewUntranslated;
-        mvx.getInverseTransposeMatrix(_transform._transformObject._modelViewInverseTranspose);
     }
      
     if (_transform._invalidView || _transform._invalidProj) {
@@ -499,7 +498,7 @@ void GLBackend::updateTransform() {
         CHECK_GL_ERROR();
    }
 
-    if (_transform._invalidView || _transform._invalidModel) {
+    if (_transform._invalidModel) {
         glBindBufferBase(GL_UNIFORM_BUFFER, 6, 0);
         glBindBuffer(GL_ARRAY_BUFFER, _transform._transformObjectBuffer);
         glBufferData(GL_ARRAY_BUFFER, sizeof(_transform._transformObject), (const void*) &_transform._transformObject, GL_DYNAMIC_DRAW);

libraries/gpu/src/gpu/Transform.slh

@@ -13,23 +13,38 @@
 struct TransformObject { 
     mat4 _model;
     mat4 _modelInverse;
-    mat4 _modelView;
-    mat4 _modelViewInverseTranspose;
 };
 
 struct TransformCamera { 
     mat4 _projection;
     mat4 _view;
     mat4 _viewInverse;
+    mat4 _projectionViewUntranslated;
 };
 
 vec4 transform(TransformCamera camera, TransformObject object, vec4 pos) {
-    
+  /*  vec4 res = object._model * pos;
-    return camera._projection * (object._modelView * pos);
+    res += pos.w * camera._viewInverse[3];
+    return camera._projectionViewUntranslated * res;
+*/
+    return camera._projectionViewUntranslated * object._model * pos;
+  //  return camera._projection * camera._view * object._model * pos;
 }
 
 vec3 transformDir(TransformCamera camera, TransformObject object, vec3 dir) {
-    return (object._modelViewInverseTranspose * vec4(dir, 0.0)).xyz;
+    vec3 mIr0 = vec3(object._modelInverse[0].x, object._modelInverse[1].x, object._modelInverse[2].x);
+    vec3 mIr1 = vec3(object._modelInverse[0].y, object._modelInverse[1].y, object._modelInverse[2].y);
+    vec3 mIr2 = vec3(object._modelInverse[0].z, object._modelInverse[1].z, object._modelInverse[2].z);
+
+    vec3 mvIc0 = vec3(dot(camera._viewInverse[0].xyz, mIr0), dot(camera._viewInverse[0].xyz, mIr1), dot(camera._viewInverse[0].xyz, mIr2));
+    vec3 mvIc1 = vec3(dot(camera._viewInverse[1].xyz, mIr0), dot(camera._viewInverse[1].xyz, mIr1), dot(camera._viewInverse[1].xyz, mIr2));
+    vec3 mvIc2 = vec3(dot(camera._viewInverse[2].xyz, mIr0), dot(camera._viewInverse[2].xyz, mIr1), dot(camera._viewInverse[2].xyz, mIr2));
+
+    vec3 result = vec3(dot(mvIc0, dir),
+                       dot(mvIc1, dir),
+                       dot(mvIc2, dir));
+                        
+    return result;
 }
 
 <@if GLPROFILE == PC_GL@>

libraries/render-utils/src/model.slv

@@ -18,22 +18,6 @@ uniform mat4 texcoordMatrices[MAX_TEXCOORDS];
 
 // the interpolated normal
 varying vec4 normal;
-/* 
-void main(void) {
-    // transform and store the normal for interpolation
-    normal = normalize(gl_ModelViewMatrix * vec4(gl_Normal, 0.0));
-    
-    // pass along the diffuse color
-    gl_FrontColor = gl_Color;
-    
-    // and the texture coordinates
-    gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);
-    
-    // use standard pipeline transform
-    gl_Position = gl_ModelViewProjectionMatrix * vec4(vin_position, 1.0);
-}
-*/
-
 
 void main(void) {
     
@@ -44,9 +28,6 @@ void main(void) {
     gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);
 
     // use standard pipeline transform
-    //gl_Position = ftransform();
-    //gl_Position = gl_ModelViewProjectionMatrix * gl_Vertex;
-    //gl_Position = gl_ProjectionMatrix * gl_ModelViewMatrix * gl_Vertex;
     TransformCamera cam = getTransformCamera();
     TransformObject obj = getTransformObject();
 

libraries/render-utils/src/model_lightmap.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_TEXCOORDS = 2;
 
 uniform mat4 texcoordMatrices[MAX_TEXCOORDS];
@@ -25,9 +27,6 @@ varying vec4 normal;
 varying vec2 interpolatedTexcoord1;
 
 void main(void) {
-    // transform and store the normal for interpolation
-    normal = normalize(gl_ModelViewMatrix * vec4(gl_Normal, 0.0));
-    
     // pass along the diffuse color
     gl_FrontColor = gl_Color;
     
@@ -37,6 +36,12 @@ void main(void) {
     interpolatedTexcoord1 = vec2(texcoordMatrices[1] * vec4(texcoord1.xy, 0.0, 1.0)).xy;
 
     // use standard pipeline transform
-    gl_Position = ftransform();
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, gl_Vertex);
+    
+    // transform and store the normal for interpolation
+    normal = vec4(normalize(transformDir(cam, obj, gl_Normal)), 0.0);
 }
 

libraries/render-utils/src/model_lightmap_normal_map.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_TEXCOORDS = 2;
 
 uniform mat4 texcoordMatrices[MAX_TEXCOORDS];
@@ -32,8 +34,8 @@ varying vec2 interpolatedTexcoord1;
 
 void main(void) {
     // transform and store the normal and tangent for interpolation
-    interpolatedNormal = gl_ModelViewMatrix * vec4(gl_Normal, 0.0);
+    //interpolatedNormal = gl_ModelViewMatrix * vec4(gl_Normal, 0.0);
-    interpolatedTangent = gl_ModelViewMatrix * vec4(tangent, 0.0);
+    //interpolatedTangent = gl_ModelViewMatrix * vec4(tangent, 0.0);
     
     // pass along the diffuse color
     gl_FrontColor = gl_Color;
@@ -43,5 +45,12 @@ void main(void) {
     interpolatedTexcoord1 = vec2(texcoordMatrices[1] * vec4(texcoord1.xy, 0.0, 1.0)).xy;
    
     // use standard pipeline transform
-    gl_Position = ftransform();
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, gl_Vertex);
+    
+    // transform and store the normal for interpolation
+    interpolatedNormal = vec4(normalize(transformDir(cam, obj, gl_Normal)), 0.0);
+    interpolatedTangent = vec4(normalize(transformDir(cam, obj, tangent)), 0.0);
 }

libraries/render-utils/src/model_normal_map.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_TEXCOORDS = 2;
 
 uniform mat4 texcoordMatrices[MAX_TEXCOORDS];
@@ -27,8 +29,8 @@ varying vec4 interpolatedTangent;
 
 void main(void) {
     // transform and store the normal and tangent for interpolation
-    interpolatedNormal = gl_ModelViewMatrix * vec4(gl_Normal, 0.0);
+    //interpolatedNormal = gl_ModelViewMatrix * vec4(gl_Normal, 0.0);
-    interpolatedTangent = gl_ModelViewMatrix * vec4(tangent, 0.0);
+    //interpolatedTangent = gl_ModelViewMatrix * vec4(tangent, 0.0);
     
     // pass along the diffuse color
     gl_FrontColor = gl_Color;
@@ -37,5 +39,12 @@ void main(void) {
     gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);
     
     // use standard pipeline transform
-    gl_Position = ftransform();
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, gl_Vertex);
+    
+    // transform and store the normal for interpolation
+    interpolatedNormal = vec4(normalize(transformDir(cam, obj, gl_Normal)), 0.0);
+    interpolatedTangent = vec4(normalize(transformDir(cam, obj, tangent)), 0.0);
 }

libraries/render-utils/src/model_shadow.slv

@@ -11,8 +11,11 @@
 //  Distributed under the Apache License, Version 2.0.
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
+<@include gpu/Transform.slh@>
 
 void main(void) {
-    // just use standard pipeline transform
+    // use standard pipeline transform
-    gl_Position = ftransform();
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+    gl_Position = transform(cam, obj, gl_Vertex);
 }

libraries/render-utils/src/skin_model.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_TEXCOORDS = 2;
 const int MAX_CLUSTERS = 128;
 const int INDICES_PER_VERTEX = 4;
@@ -35,13 +37,18 @@ void main(void) {
         normal += clusterMatrix * vec4(gl_Normal, 0.0) * clusterWeight;
     }
 
-    normal = normalize(gl_ModelViewMatrix * normal);
-    
     // pass along the diffuse color
     gl_FrontColor = gl_Color;
 
     // and the texture coordinates
     gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);
     
-    gl_Position = gl_ModelViewProjectionMatrix * position;
+    // use standard pipeline transform
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, position);
+    
+    // transform and store the normal for interpolation
+    normal = vec4(normalize(transformDir(cam, obj, normal.xyz)), 0.0);
 }

libraries/render-utils/src/skin_model_normal_map.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_TEXCOORDS = 2;
 const int MAX_CLUSTERS = 128;
 const int INDICES_PER_VERTEX = 4;
@@ -42,8 +44,8 @@ void main(void) {
         interpolatedNormal += clusterMatrix * vec4(gl_Normal, 0.0) * clusterWeight;
         interpolatedTangent += clusterMatrix * vec4(tangent, 0.0) * clusterWeight;
     }
-    interpolatedNormal = gl_ModelViewMatrix * interpolatedNormal;
+  //  interpolatedNormal = gl_ModelViewMatrix * interpolatedNormal;
-    interpolatedTangent = gl_ModelViewMatrix * interpolatedTangent;
+  //  interpolatedTangent = gl_ModelViewMatrix * interpolatedTangent;
     
     // pass along the diffuse color
     gl_FrontColor = gl_Color;
@@ -52,4 +54,13 @@ void main(void) {
     gl_TexCoord[0] = texcoordMatrices[0] * vec4(gl_MultiTexCoord0.xy, 0.0, 1.0);
     
     gl_Position = gl_ModelViewProjectionMatrix * interpolatedPosition;
+
+    // use standard pipeline transform
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, interpolatedPosition);
+
+    interpolatedNormal = vec4(normalize(transformDir(cam, obj, interpolatedNormal.xyz)), 0.0);
+    interpolatedTangent = vec4(normalize(transformDir(cam, obj, interpolatedTangent.xyz)), 0.0);
 }

libraries/render-utils/src/skin_model_shadow.slv

@@ -12,6 +12,8 @@
 //  See the accompanying file LICENSE or http://www.apache.org/licenses/LICENSE-2.0.html
 //
 
+<@include gpu/Transform.slh@>
+
 const int MAX_CLUSTERS = 128;
 const int INDICES_PER_VERTEX = 4;
 
@@ -27,5 +29,10 @@ void main(void) {
         float clusterWeight = clusterWeights[i];
         position += clusterMatrix * gl_Vertex * clusterWeight;
     }
-    gl_Position = gl_ModelViewProjectionMatrix * position;
+
+    // use standard pipeline transform
+    TransformCamera cam = getTransformCamera();
+    TransformObject obj = getTransformObject();
+
+    gl_Position = transform(cam, obj, position);
 }

libraries/shared/src/Transform.h

@@ -92,6 +92,9 @@ public:
     Mat4& getInverseMatrix(Mat4& result) const;
     Mat4& getInverseTransposeMatrix(Mat4& result) const;
 
+    Mat4& getRotationScaleMatrix(Mat4& result) const;
+    Mat4& getRotationScaleMatrixInverse(Mat4& result) const;
+
     Transform& evalInverse(Transform& result) const;
 
     static void evalRotationScale(Quat& rotation, Vec3& scale, const Mat3& rotationScaleMatrix);
@@ -336,6 +339,17 @@ inline Transform::Mat4& Transform::getInverseTransposeMatrix(Transform::Mat4& re
     return result;
 }
 
+inline Transform::Mat4& Transform::getRotationScaleMatrix(Mat4& result) const {
+    getMatrix(result);
+    result[3] = Vec4(0.0f, 0.0f, 0.0f, 1.0f);
+    return result;
+}
+
+inline Transform::Mat4& Transform::getRotationScaleMatrixInverse(Mat4& result) const {
+    getInverseMatrix(result);
+    result[3] = Vec4(0.0f, 0.0f, 0.0f, 1.0f);
+    return result;
+}
 
 inline void Transform::evalFromRawMatrix(const Mat4& matrix) {
     // for now works only in the case of TRS transformation