| // Copyright (C) 2011 The Android Open Source Project |
| // |
| // Licensed under the Apache License, Version 2.0 (the "License"); |
| // you may not use this file except in compliance with the License. |
| // You may obtain a copy of the License at |
| // |
| // http://www.apache.org/licenses/LICENSE-2.0 |
| // |
| // Unless required by applicable law or agreed to in writing, software |
| // distributed under the License is distributed on an "AS IS" BASIS, |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| // See the License for the specific language governing permissions and |
| // limitations under the License. |
| |
| #pragma version(1) |
| |
| #pragma rs java_package_name(com.android.scenegraph) |
| |
| //#define DEBUG_CAMERA |
| #include "scenegraph_objects.rsh" |
| |
| void root(const rs_allocation *v_in, rs_allocation *v_out, const float *usrData) { |
| |
| SgCamera *cam = (SgCamera *)rsGetElementAt(*v_in, 0); |
| float aspect = *usrData; |
| if (cam->aspect != aspect) { |
| cam->isDirty = 1; |
| cam->aspect = aspect; |
| } |
| if (cam->isDirty) { |
| rsMatrixLoadPerspective(&cam->proj, cam->horizontalFOV, cam->aspect, cam->near, cam->far); |
| } |
| |
| const SgTransform *camTransform = (const SgTransform *)rsGetElementAt(cam->transformMatrix, 0); |
| //rsDebug("Camera stamp", cam->transformTimestamp); |
| //rsDebug("Transform stamp", camTransform->timestamp); |
| if (camTransform->timestamp != cam->transformTimestamp || cam->isDirty) { |
| cam->isDirty = 1; |
| rs_matrix4x4 camPosMatrix; |
| rsMatrixLoad(&camPosMatrix, &camTransform->globalMat); |
| float4 zero = {0.0f, 0.0f, 0.0f, 1.0f}; |
| cam->position = rsMatrixMultiply(&camPosMatrix, zero); |
| |
| rsMatrixInverse(&camPosMatrix); |
| rsMatrixLoad(&cam->view, &camPosMatrix); |
| |
| rsMatrixLoad(&cam->viewProj, &cam->proj); |
| rsMatrixMultiply(&cam->viewProj, &cam->view); |
| |
| rsExtractFrustumPlanes(&cam->viewProj, |
| &cam->frustumPlanes[0], &cam->frustumPlanes[1], |
| &cam->frustumPlanes[2], &cam->frustumPlanes[3], |
| &cam->frustumPlanes[3], &cam->frustumPlanes[4]); |
| } |
| |
| if (cam->isDirty) { |
| cam->timestamp ++; |
| } |
| |
| cam->isDirty = 0; |
| cam->transformTimestamp = camTransform->timestamp; |
| |
| #ifdef DEBUG_CAMERA |
| printCameraInfo(cam); |
| #endif //DEBUG_CAMERA |
| } |