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Diffstat (limited to 'libs/rs/driver/rsdMeshObj.cpp')
| -rw-r--r-- | libs/rs/driver/rsdMeshObj.cpp | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/libs/rs/driver/rsdMeshObj.cpp b/libs/rs/driver/rsdMeshObj.cpp new file mode 100644 index 0000000..6bb33f7 --- /dev/null +++ b/libs/rs/driver/rsdMeshObj.cpp @@ -0,0 +1,178 @@ +/* + * 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. + */ + +#include <GLES/gl.h> +#include <GLES2/gl2.h> +#include <GLES/glext.h> + +#include <rs_hal.h> +#include <rsContext.h> +#include <rsMesh.h> + +#include "rsdMeshObj.h" + +using namespace android; +using namespace android::renderscript; + +RsdMeshObj::RsdMeshObj(const Context *rsc, const Mesh *rsMesh) { + mRSMesh = rsMesh; + + mAttribs = NULL; + mAttribAllocationIndex = NULL; + mGLPrimitives = NULL; + + mAttribCount = 0; +} + +RsdMeshObj::~RsdMeshObj() { + if (mAttribs) { + delete[] mAttribs; + delete[] mAttribAllocationIndex; + } + if (mGLPrimitives) { + delete[] mGLPrimitives; + } +} + +bool RsdMeshObj::isValidGLComponent(const Element *elem, uint32_t fieldIdx) { + // Do not create attribs for padding + if (elem->getFieldName(fieldIdx)[0] == '#') { + return false; + } + + // Only GL_BYTE, GL_UNSIGNED_BYTE, GL_SHORT, GL_UNSIGNED_SHORT, GL_FIXED, GL_FLOAT are accepted. + // Filter rs types accordingly + RsDataType dt = elem->getField(fieldIdx)->getComponent().getType(); + if (dt != RS_TYPE_FLOAT_32 && dt != RS_TYPE_UNSIGNED_8 && + dt != RS_TYPE_UNSIGNED_16 && dt != RS_TYPE_SIGNED_8 && + dt != RS_TYPE_SIGNED_16) { + return false; + } + + // Now make sure they are not arrays + uint32_t arraySize = elem->getFieldArraySize(fieldIdx); + if (arraySize != 1) { + return false; + } + + return true; +} + +bool RsdMeshObj::init() { + + updateGLPrimitives(); + + // Count the number of gl attrs to initialize + mAttribCount = 0; + for (uint32_t ct=0; ct < mRSMesh->mHal.state.vertexBuffersCount; ct++) { + const Element *elem = mRSMesh->mHal.state.vertexBuffers[ct]->getType()->getElement(); + for (uint32_t ct=0; ct < elem->getFieldCount(); ct++) { + if (isValidGLComponent(elem, ct)) { + mAttribCount ++; + } + } + } + + if (mAttribs) { + delete [] mAttribs; + delete [] mAttribAllocationIndex; + mAttribs = NULL; + mAttribAllocationIndex = NULL; + } + if (!mAttribCount) { + return false; + } + + mAttribs = new RsdVertexArray::Attrib[mAttribCount]; + mAttribAllocationIndex = new uint32_t[mAttribCount]; + + uint32_t userNum = 0; + for (uint32_t ct=0; ct < mRSMesh->mHal.state.vertexBuffersCount; ct++) { + const Element *elem = mRSMesh->mHal.state.vertexBuffers[ct]->getType()->getElement(); + uint32_t stride = elem->getSizeBytes(); + for (uint32_t fieldI=0; fieldI < elem->getFieldCount(); fieldI++) { + const Component &c = elem->getField(fieldI)->getComponent(); + + if (!isValidGLComponent(elem, fieldI)) { + continue; + } + + mAttribs[userNum].size = c.getVectorSize(); + mAttribs[userNum].offset = elem->getFieldOffsetBytes(fieldI); + mAttribs[userNum].type = c.getGLType(); + mAttribs[userNum].normalized = c.getType() != RS_TYPE_FLOAT_32;//c.getIsNormalized(); + mAttribs[userNum].stride = stride; + String8 tmp(RS_SHADER_ATTR); + tmp.append(elem->getFieldName(fieldI)); + mAttribs[userNum].name.setTo(tmp.string()); + + // Remember which allocation this attribute came from + mAttribAllocationIndex[userNum] = ct; + userNum ++; + } + } + + return true; +} + +void RsdMeshObj::renderPrimitiveRange(const Context *rsc, uint32_t primIndex, uint32_t start, uint32_t len) const { + if (len < 1 || primIndex >= mRSMesh->mHal.state.primitivesCount || mAttribCount == 0) { + LOGE("Invalid mesh or parameters"); + return; + } + + rsc->checkError("Mesh::renderPrimitiveRange 1"); + // update attributes with either buffer information or data ptr based on their current state + for (uint32_t ct=0; ct < mAttribCount; ct++) { + uint32_t allocIndex = mAttribAllocationIndex[ct]; + Allocation *alloc = mRSMesh->mHal.state.vertexBuffers[allocIndex].get(); + if (alloc->getIsBufferObject() && alloc->getBufferObjectID()) { + mAttribs[ct].buffer = alloc->getBufferObjectID(); + mAttribs[ct].ptr = NULL; + } else { + mAttribs[ct].buffer = 0; + mAttribs[ct].ptr = (const uint8_t*)alloc->getPtr(); + } + } + + RsdVertexArray va(mAttribs, mAttribCount); + va.setupGL2(rsc); + + rsc->checkError("Mesh::renderPrimitiveRange 2"); + Mesh::Primitive_t *prim = mRSMesh->mHal.state.primitives[primIndex]; + if (prim->mIndexBuffer.get()) { + glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, prim->mIndexBuffer->getBufferObjectID()); + glDrawElements(mGLPrimitives[primIndex], len, GL_UNSIGNED_SHORT, (uint16_t *)(start * 2)); + } else { + glDrawArrays(mGLPrimitives[primIndex], start, len); + } + + rsc->checkError("Mesh::renderPrimitiveRange"); +} + +void RsdMeshObj::updateGLPrimitives() { + mGLPrimitives = new uint32_t[mRSMesh->mHal.state.primitivesCount]; + for (uint32_t i = 0; i < mRSMesh->mHal.state.primitivesCount; i ++) { + switch (mRSMesh->mHal.state.primitives[i]->mPrimitive) { + case RS_PRIMITIVE_POINT: mGLPrimitives[i] = GL_POINTS; break; + case RS_PRIMITIVE_LINE: mGLPrimitives[i] = GL_LINES; break; + case RS_PRIMITIVE_LINE_STRIP: mGLPrimitives[i] = GL_LINE_STRIP; break; + case RS_PRIMITIVE_TRIANGLE: mGLPrimitives[i] = GL_TRIANGLES; break; + case RS_PRIMITIVE_TRIANGLE_STRIP: mGLPrimitives[i] = GL_TRIANGLE_STRIP; break; + case RS_PRIMITIVE_TRIANGLE_FAN: mGLPrimitives[i] = GL_TRIANGLE_FAN; break; + } + } +} |