Main: AutoParamDataSource - allow injecting cameras

OGRECave · Feb 27, 2025 · 0baa453 · 0baa453
1 parent 57fc7df
commit 0baa453
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Showing 2 changed files with 48 additions and 32 deletions.
diff --git a/OgreMain/include/OgreAutoParamDataSource.h b/OgreMain/include/OgreAutoParamDataSource.h
@@ -163,8 +163,10 @@ namespace Ogre {
         size_t getBoneMatrixCount(void) const;
         OGRE_DEPRECATED size_t getWorldMatrixCount(void) const { return getBoneMatrixCount(); }
         const Affine3& getViewMatrix(void) const;
+        Affine3 getViewMatrix(const Camera* cam) const;
         const Matrix4& getViewProjectionMatrix(void) const;
         const Matrix4& getProjectionMatrix(void) const;
+        Matrix4 getProjectionMatrix(const Camera* cam) const;
         const Matrix4& getWorldViewProjMatrix(void) const;
         const Affine3& getWorldViewMatrix(void) const;
         const Affine3& getInverseWorldMatrix(void) const;

diff --git a/OgreMain/src/OgreAutoParamDataSource.cpp b/OgreMain/src/OgreAutoParamDataSource.cpp
@@ -306,21 +306,26 @@ namespace Ogre {
         return mWorldMatrixArray + int(MeshManager::getBonesUseObjectSpace());
     }
     //-----------------------------------------------------------------------------
-    const Affine3& AutoParamDataSource::getViewMatrix(void) const
+    Affine3 AutoParamDataSource::getViewMatrix(const Camera* cam) const
     {
-        if (mViewMatrixDirty)
+        Affine3 view;
+        if (mCurrentRenderable && mCurrentRenderable->getUseIdentityView())
+            view = Affine3::IDENTITY;
+        else
         {
-            if (mCurrentRenderable && mCurrentRenderable->getUseIdentityView())
-                mViewMatrix = Affine3::IDENTITY;
-            else
+            view = cam->getViewMatrix(true);
+            if (mCameraRelativeRendering)
             {
-                mViewMatrix = mCurrentCamera->getViewMatrix(true);
-                if (mCameraRelativeRendering)
-                {
-                    mViewMatrix.setTrans(Vector3::ZERO);
-                }
-
+                view.setTrans(Vector3::ZERO);
             }
+        }
+        return view;
+    }
+    const Affine3& AutoParamDataSource::getViewMatrix(void) const
+    {
+        if (mViewMatrixDirty)
+        {
+            mViewMatrix = getViewMatrix(mCurrentCamera);
             mViewMatrixDirty = false;
         }
         return mViewMatrix;
@@ -336,31 +341,40 @@ namespace Ogre {
         return mViewProjMatrix;
     }
     //-----------------------------------------------------------------------------
+    Matrix4 AutoParamDataSource::getProjectionMatrix(const Camera* cam) const
+    {
+        Matrix4 proj;
+
+        // NB use API-independent projection matrix since GPU programs
+        // bypass the API-specific handedness and use right-handed coords
+        if (mCurrentRenderable && mCurrentRenderable->getUseIdentityProjection())
+        {
+            // Use identity projection matrix, still need to take RS depth into account.
+            RenderSystem* rs = Root::getSingleton().getRenderSystem();
+            rs->_convertProjectionMatrix(Matrix4::IDENTITY, proj, true);
+        }
+        else
+        {
+            proj = mCurrentCamera->getProjectionMatrixWithRSDepth();
+        }
+
+        if (mCurrentRenderTarget && mCurrentRenderTarget->requiresTextureFlipping())
+        {
+            // Because we're not using setProjectionMatrix, this needs to be done here
+            // Invert transformed y
+            proj[1][0] = -proj[1][0];
+            proj[1][1] = -proj[1][1];
+            proj[1][2] = -proj[1][2];
+            proj[1][3] = -proj[1][3];
+        }
+
+        return proj;
+    }
     const Matrix4& AutoParamDataSource::getProjectionMatrix(void) const
     {
         if (mProjMatrixDirty)
         {
-            // NB use API-independent projection matrix since GPU programs
-            // bypass the API-specific handedness and use right-handed coords
-            if (mCurrentRenderable && mCurrentRenderable->getUseIdentityProjection())
-            {
-                // Use identity projection matrix, still need to take RS depth into account.
-                RenderSystem* rs = Root::getSingleton().getRenderSystem();
-                rs->_convertProjectionMatrix(Matrix4::IDENTITY, mProjectionMatrix, true);
-            }
-            else
-            {
-                mProjectionMatrix = mCurrentCamera->getProjectionMatrixWithRSDepth();
-            }
-            if (mCurrentRenderTarget && mCurrentRenderTarget->requiresTextureFlipping())
-            {
-                // Because we're not using setProjectionMatrix, this needs to be done here
-                // Invert transformed y
-                mProjectionMatrix[1][0] = -mProjectionMatrix[1][0];
-                mProjectionMatrix[1][1] = -mProjectionMatrix[1][1];
-                mProjectionMatrix[1][2] = -mProjectionMatrix[1][2];
-                mProjectionMatrix[1][3] = -mProjectionMatrix[1][3];
-            }
+            mProjectionMatrix = getProjectionMatrix(mCurrentCamera);
             mProjMatrixDirty = false;
         }
         return mProjectionMatrix;