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implement fast mesh rendering for Qt5 port (7x faster)

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wmayer
2018-07-28 11:08:03 +02:00
parent db4f47cf28
commit 039e972a4b
8 changed files with 565 additions and 122 deletions
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600
src/Mod/Mesh/Gui/SoFCIndexedFaceSet.cpp
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@@ -38,10 +38,12 @@
# include <Inventor/bundles/SoMaterialBundle.h>
# include <Inventor/elements/SoCoordinateElement.h>
# include <Inventor/elements/SoGLCoordinateElement.h>
# include <Inventor/elements/SoGLLazyElement.h>
# include <Inventor/elements/SoMaterialBindingElement.h>
# include <Inventor/elements/SoNormalBindingElement.h>
# include <Inventor/elements/SoProjectionMatrixElement.h>
# include <Inventor/elements/SoViewingMatrixElement.h>
# include <Inventor/errors/SoDebugError.h>
#endif
#include <Inventor/C/glue/gl.h>
@@ -49,11 +51,332 @@
#include <Gui/SoFCInteractiveElement.h>
#include <Gui/SoFCSelectionAction.h>
#include "SoFCIndexedFaceSet.h"
#include <QtOpenGL.h>
#ifdef HAVE_QT5_OPENGL
#define RENDER_GL_VAO
#endif
//#define RENDER_GLARRAYS
#ifdef RENDER_GL_VAO
#include <QOpenGLBuffer>
#include <QOpenGLFunctions>
#endif
using namespace MeshGui;
#if defined RENDER_GL_VAO
class MeshRenderer::Private : protected QOpenGLFunctions {
public:
QOpenGLBuffer vertices;
QOpenGLBuffer indices;
const SbColor * pcolors;
SoMaterialBindingElement::Binding matbinding;
//#define RENDER_GLARRAYS
Private();
void generateGLArrays(SoMaterialBindingElement::Binding matbind,
std::vector<float>& vertex, std::vector<int32_t>& index);
void renderFacesGLArray(SoGLRenderAction*);
void renderCoordsGLArray(SoGLRenderAction *action);
};
MeshRenderer::Private::Private()
: vertices(QOpenGLBuffer::VertexBuffer)
, indices(QOpenGLBuffer::IndexBuffer)
, pcolors(0)
, matbinding(SoMaterialBindingElement::OVERALL)
{
initializeOpenGLFunctions();
vertices.create();
indices.create();
vertices.setUsagePattern(QOpenGLBuffer::StaticDraw);
indices.setUsagePattern(QOpenGLBuffer::StaticDraw);
}
void MeshRenderer::Private::generateGLArrays(SoMaterialBindingElement::Binding matbind,
std::vector<float>& vertex, std::vector<int32_t>& index)
{
if (vertex.empty() || index.empty())
return;
vertices.bind();
vertices.allocate(&(vertex[0]),
vertex.size() * sizeof(float));
vertices.release();
indices.bind();
indices.allocate(&(index[0]),
index.size() * sizeof(int32_t));
indices.release();
this->matbinding = matbind;
}
void MeshRenderer::Private::renderFacesGLArray(SoGLRenderAction *)
{
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
vertices.bind();
indices.bind();
if (matbinding != SoMaterialBindingElement::OVERALL)
glInterleavedArrays(GL_C4F_N3F_V3F, 0, 0);
else
glInterleavedArrays(GL_N3F_V3F, 0, 0);
glDrawElements(GL_TRIANGLES, indices.size() / sizeof(uint32_t),
GL_UNSIGNED_INT, NULL);
vertices.release();
indices.release();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
void MeshRenderer::Private::renderCoordsGLArray(SoGLRenderAction *)
{
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
vertices.bind();
indices.bind();
if (matbinding != SoMaterialBindingElement::OVERALL)
glInterleavedArrays(GL_C4F_N3F_V3F, 0, 0);
else
glInterleavedArrays(GL_N3F_V3F, 0, 0);
glDrawElements(GL_POINTS, indices.size() / sizeof(uint32_t),
GL_UNSIGNED_INT, NULL);
vertices.release();
indices.release();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
#elif defined RENDER_GLARRAYS
class MeshRenderer::Private {
public:
std::vector<int32_t> index_array;
std::vector<float> vertex_array;
const SbColor * pcolors;
SoMaterialBindingElement::Binding matbinding;
Private()
: pcolors(0)
, matbinding(SoMaterialBindingElement::OVERALL)
{
}
void generateGLArrays(SoMaterialBindingElement::Binding matbind,
std::vector<float>& vertex, std::vector<int32_t>& index);
void renderFacesGLArray(SoGLRenderAction *action);
void renderCoordsGLArray(SoGLRenderAction *action);
};
void MeshRenderer::Private::generateGLArrays(SoMaterialBindingElement::Binding matbind,
std::vector<float>& vertex, std::vector<int32_t>& index)
{
if (vertex.empty() || index.empty())
return;
this->index_array.resize(0);
this->vertex_array.resize(0);
this->index_array.swap(index);
this->vertex_array.swap(vertex);
this->matbinding = matbind;
}
void MeshRenderer::Private::renderFacesGLArray(SoGLRenderAction *action)
{
#if 0 // use Inventor's coordIndex saves memory but the rendering is very slow then
const cc_glglue * glue = cc_glglue_instance(action->getCacheContext());
PFNGLPRIMITIVERESTARTINDEXPROC glPrimitiveRestartIndex = (PFNGLPRIMITIVERESTARTINDEXPROC)
cc_glglue_getprocaddress(glue, "glPrimitiveRestartIndex");
int cnt = coordIndex.getNum();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
// https://www.opengl.org/discussion_boards/archive/index.php/t-180767.html
// https://www.khronos.org/opengl/wiki/Vertex_Rendering#Primitive_Restart
glPrimitiveRestartIndex(0xffffffff);
glEnable(GL_PRIMITIVE_RESTART);
//glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_TRIANGLES, cnt, GL_UNSIGNED_INT, coordIndex.getValues(0));
glDisable(GL_PRIMITIVE_RESTART);
//glDisable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
#else // Needs more memory but makes it very fast
(void)action;
int cnt = index_array.size();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
if (matbinding != SoMaterialBindingElement::OVERALL)
glInterleavedArrays(GL_C4F_N3F_V3F, 0, &(vertex_array[0]));
else
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_TRIANGLES, cnt, GL_UNSIGNED_INT, &(index_array[0]));
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
#endif
}
void MeshRenderer::Private::renderCoordsGLArray(SoGLRenderAction *)
{
int cnt = index_array.size();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
if (matbinding != SoMaterialBindingElement::OVERALL)
glInterleavedArrays(GL_C4F_N3F_V3F, 0, &(vertex_array[0]));
else
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_POINTS, cnt, GL_UNSIGNED_INT, &(index_array[0]));
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
#else
class MeshRenderer::Private {
public:
const SbColor * pcolors;
SoMaterialBindingElement::Binding matbinding;
Private()
: pcolors(0)
, matbinding(SoMaterialBindingElement::OVERALL)
{
}
void generateGLArrays(SoMaterialBindingElement::Binding,
std::vector<float>&, std::vector<int32_t>&)
{
}
void renderFacesGLArray(SoGLRenderAction *)
{
}
void renderCoordsGLArray(SoGLRenderAction *)
{
}
};
#endif
MeshRenderer::MeshRenderer()
: p(new Private)
{
}
MeshRenderer::~MeshRenderer()
{
delete p;
}
void MeshRenderer::generateGLArrays(SoState* state, SoMaterialBindingElement::Binding matbind,
std::vector<float>& vertex, std::vector<int32_t>& index)
{
SoGLLazyElement* gl = SoGLLazyElement::getInstance(state);
if (gl) {
p->pcolors = gl->getDiffusePointer();
}
p->generateGLArrays(matbind, vertex, index);
}
// Implementation | FPS
// ================================================
// drawCoords (every 4th vertex) | 20.0
// renderCoordsGLArray (all vertexes) | 20.0
//
void MeshRenderer::renderCoordsGLArray(SoGLRenderAction *action)
{
p->renderCoordsGLArray(action);
}
//****************************************************************************
// renderFacesGLArray: normal and coord from vertex_array;
// no texture, color, highlight or selection but highest possible speed;
// all vertices written in one go!
//
// Benchmark tests with an 256 MB STL file:
//
// Implementation | FPS
// ================================================
// OpenInventor (SoIndexedFaceSet) | 3.0
// Custom OpenInventor (SoFCMeshObjectShape) | 8.5
// With GL_PRIMITIVE_RESTART | 0.9
// With GL_PRIMITIVE_RESTART_FIXED_INDEX | 0.9
// Without GL_PRIMITIVE_RESTART | 8.5
// Vertex-Array-Object (RENDER_GL_VAO) | 60.0
void MeshRenderer::renderFacesGLArray(SoGLRenderAction *action)
{
p->renderFacesGLArray(action);
}
bool MeshRenderer::matchMaterial(SoState* state) const
{
SoMaterialBindingElement::Binding matbind =
SoMaterialBindingElement::get(state);
const SbColor * pcolors = 0;
SoGLLazyElement* gl = SoGLLazyElement::getInstance(state);
if (gl) {
pcolors = gl->getDiffusePointer();
}
return p->matbinding == matbind && p->pcolors == pcolors;
}
bool MeshRenderer::shouldRenderDirectly(bool direct)
{
#ifdef RENDER_GL_VAO
Q_UNUSED(direct);
return false;
#else
return direct;
#endif
}
// ----------------------------------------------------------------------------
SO_ENGINE_SOURCE(SoFCMaterialEngine);
SoFCMaterialEngine::SoFCMaterialEngine()
{
SO_ENGINE_CONSTRUCTOR(SoFCMaterialEngine);
SO_ENGINE_ADD_INPUT(diffuseColor, (SbColor(0.0, 0.0, 0.0)));
SO_ENGINE_ADD_OUTPUT(trigger, SoSFBool);
}
SoFCMaterialEngine::~SoFCMaterialEngine()
{
}
void SoFCMaterialEngine::initClass()
{
SO_ENGINE_INIT_CLASS(SoFCMaterialEngine, SoEngine, "Engine");
}
void SoFCMaterialEngine::inputChanged(SoField *)
{
SO_ENGINE_OUTPUT(trigger, SoSFBool, setValue(true));
}
void SoFCMaterialEngine::evaluate()
{
// do nothing here
}
// ----------------------------------------------------------------------------
SO_NODE_SOURCE(SoFCIndexedFaceSet);
@@ -62,9 +385,13 @@ void SoFCIndexedFaceSet::initClass()
SO_NODE_INIT_CLASS(SoFCIndexedFaceSet, SoIndexedFaceSet, "IndexedFaceSet");
}
SoFCIndexedFaceSet::SoFCIndexedFaceSet() : renderTriangleLimit(100000), updateGLArray(false), selectBuf(0)
SoFCIndexedFaceSet::SoFCIndexedFaceSet()
: renderTriangleLimit(100000)
, selectBuf(0)
{
SO_NODE_CONSTRUCTOR(SoFCIndexedFaceSet);
SO_NODE_ADD_FIELD(updateGLArray, (false));
updateGLArray.setFieldType(SoField::EVENTOUT_FIELD);
setName(SoFCIndexedFaceSet::getClassTypeId().getName());
}
@@ -90,9 +417,15 @@ void SoFCIndexedFaceSet::GLRender(SoGLRenderAction *action)
SoState * state = action->getState();
SbBool mode = Gui::SoFCInteractiveElement::get(state);
#if defined(RENDER_GL_VAO)
if (mode == false || render.matchMaterial(state)) {
#else
unsigned int num = this->coordIndex.getNum()/4;
if (mode == false || num <= this->renderTriangleLimit) {
#ifdef RENDER_GLARRAYS
#endif
#if defined (RENDER_GLARRAYS) || defined(RENDER_GL_VAO)
#if 0
SoMaterialBindingElement::Binding matbind =
SoMaterialBindingElement::get(state);
@@ -103,11 +436,26 @@ void SoFCIndexedFaceSet::GLRender(SoGLRenderAction *action)
updateGLArray = false;
generateGLArrays(state);
}
renderFacesGLArray(action);
render.renderFacesGLArray(action);
}
else {
inherited::GLRender(action);
}
#else
if (updateGLArray.getValue()) {
updateGLArray = false;
generateGLArrays(state);
}
if (render.matchMaterial(state)) {
SoMaterialBundle mb(action);
mb.sendFirst();
render.renderFacesGLArray(action);
}
else {
inherited::GLRender(action);
}
#endif
#else
inherited::GLRender(action);
#endif
@@ -116,7 +464,7 @@ void SoFCIndexedFaceSet::GLRender(SoGLRenderAction *action)
#if 0 && defined (RENDER_GLARRAYS)
SoMaterialBundle mb(action);
mb.sendFirst();
renderCoordsGLArray(action);
render.renderCoordsGLArray(action);
#else
SoMaterialBindingElement::Binding matbind =
SoMaterialBindingElement::get(state);
@@ -235,13 +583,12 @@ void SoFCIndexedFaceSet::invalidate()
void SoFCIndexedFaceSet::generateGLArrays(SoState * state)
{
this->index_array.resize(0);
this->vertex_array.resize(0);
const SoCoordinateElement * coords;
const SbVec3f * normals;
const int32_t * cindices;
int numindices;
const SbColor * pcolors = 0;
const float * transp = 0;
int numindices, numcolors = 0, numtransp = 0;
const int32_t * nindices;
const int32_t * tindices;
const int32_t * mindices;
@@ -255,115 +602,166 @@ void SoFCIndexedFaceSet::generateGLArrays(SoState * state)
const SbVec3f * points = coords->getArrayPtr3();
SoMaterialBindingElement::Binding matbind =
SoMaterialBindingElement::get(state);
SoGLLazyElement* gl = SoGLLazyElement::getInstance(state);
if (gl) {
pcolors = gl->getDiffusePointer();
numcolors = gl->getNumDiffuse();
transp = gl->getTransparencyPointer();
numtransp = gl->getNumTransparencies();
Q_UNUSED(numtransp);
}
std::vector<float> face_vertices;
std::vector<int32_t> face_indices;
std::size_t numTria = numindices / 4;
if (!mindices && matbind == SoMaterialBindingElement::PER_VERTEX_INDEXED) {
mindices = cindices;
}
SoNormalBindingElement::Binding normbind = SoNormalBindingElement::get(state);
if (normbind == SoNormalBindingElement::PER_VERTEX_INDEXED) {
face_vertices.reserve(3 * numTria * 6); // duplicate each vertex
face_indices.resize(3 * numTria);
if (matbind == SoMaterialBindingElement::PER_FACE) {
face_vertices.reserve(3 * numTria * 10); // duplicate each vertex (rgba, normal, vertex)
face_indices.resize(3 * numTria);
if (numcolors != static_cast<int>(numTria)) {
SoDebugError::postWarning("SoFCIndexedFaceSet::generateGLArrays",
"The number of faces (%d) doesn't match with the number of colors (%d).", numTria, numcolors);
}
// the nindices must have the length of numindices
int32_t vertex = 0;
int index = 0;
float t = transp[0];
for (std::size_t i=0; i<numTria; i++) {
const SbColor& c = pcolors[i];
for (int j=0; j<3; j++) {
face_vertices.push_back(c[0]);
face_vertices.push_back(c[1]);
face_vertices.push_back(c[2]);
face_vertices.push_back(t);
const SbVec3f& n = normals[nindices[index]];
face_vertices.push_back(n[0]);
face_vertices.push_back(n[1]);
face_vertices.push_back(n[2]);
const SbVec3f& p = points[cindices[index]];
face_vertices.push_back(p[0]);
face_vertices.push_back(p[1]);
face_vertices.push_back(p[2]);
face_indices[vertex] = vertex;
vertex++;
index++;
}
index++;
}
}
else if (matbind == SoMaterialBindingElement::PER_VERTEX_INDEXED) {
face_vertices.reserve(3 * numTria * 10); // duplicate each vertex (rgba, normal, vertex)
face_indices.resize(3 * numTria);
if (numcolors != coords->getNum()) {
SoDebugError::postWarning("SoFCIndexedFaceSet::generateGLArrays",
"The number of points (%d) doesn't match with the number of colors (%d).", coords->getNum(), numcolors);
}
// the nindices must have the length of numindices
int32_t vertex = 0;
int index = 0;
float t = transp[0];
for (std::size_t i=0; i<numTria; i++) {
for (int j=0; j<3; j++) {
const SbColor& c = pcolors[mindices[index]];
face_vertices.push_back(c[0]);
face_vertices.push_back(c[1]);
face_vertices.push_back(c[2]);
face_vertices.push_back(t);
const SbVec3f& n = normals[nindices[index]];
face_vertices.push_back(n[0]);
face_vertices.push_back(n[1]);
face_vertices.push_back(n[2]);
const SbVec3f& p = points[cindices[index]];
face_vertices.push_back(p[0]);
face_vertices.push_back(p[1]);
face_vertices.push_back(p[2]);
face_indices[vertex] = vertex;
vertex++;
index++;
}
index++;
}
}
else {
// only an overall material
matbind = SoMaterialBindingElement::OVERALL;
face_vertices.reserve(3 * numTria * 6); // duplicate each vertex (normal, vertex)
face_indices.resize(3 * numTria);
// the nindices must have the length of numindices
int32_t vertex = 0;
int index = 0;
for (std::size_t i=0; i<numTria; i++) {
for (int j=0; j<3; j++) {
const SbVec3f& n = normals[nindices[index]];
face_vertices.push_back(n[0]);
face_vertices.push_back(n[1]);
face_vertices.push_back(n[2]);
const SbVec3f& p = points[cindices[index]];
face_vertices.push_back(p[0]);
face_vertices.push_back(p[1]);
face_vertices.push_back(p[2]);
face_indices[vertex] = vertex;
vertex++;
index++;
}
index++;
}
}
}
else if (normbind == SoNormalBindingElement::PER_VERTEX) {
// only an overall material
matbind = SoMaterialBindingElement::OVERALL;
std::size_t numPts = coords->getNum();
face_vertices.reserve(6 * numPts);
for (std::size_t i=0; i<numPts; i++) {
const SbVec3f& n = normals[i];
face_vertices.push_back(n[0]);
face_vertices.push_back(n[1]);
face_vertices.push_back(n[2]);
const SbVec3f& p = coords->get3(i);
face_vertices.push_back(p[0]);
face_vertices.push_back(p[1]);
face_vertices.push_back(p[2]);
}
face_indices.reserve(3 * numTria);
// the nindices must have the length of numindices
int32_t vertex = 0;
int index = 0;
for (std::size_t i=0; i<numTria; i++) {
for (int j=0; j<3; j++) {
const SbVec3f& n = normals[nindices[index]];
face_vertices.push_back(n[0]);
face_vertices.push_back(n[1]);
face_vertices.push_back(n[2]);
const SbVec3f& p = points[cindices[index]];
face_vertices.push_back(p[0]);
face_vertices.push_back(p[1]);
face_vertices.push_back(p[2]);
face_indices[vertex] = vertex;
vertex++;
face_indices.push_back(cindices[index]);
index++;
}
index++;
}
}
this->index_array.swap(face_indices);
this->vertex_array.swap(face_vertices);
}
//****************************************************************************
// renderFacesGLArray: normal and coord from vertex_array;
// no texture, color, highlight or selection but highest possible speed;
// all vertices written in one go!
//
// Benchmark tests with an 256 MB STL file:
//
// Implementation | FPS
// ================================================
// OpenInventor | 3.5
// With GL_PRIMITIVE_RESTART | 0.9
// With GL_PRIMITIVE_RESTART_FIXED_INDEX | 0.9
// Without GL_PRIMITIVE_RESTART | 12.5
//
void SoFCIndexedFaceSet::renderFacesGLArray(SoGLRenderAction *action)
{
#if 0 // use Inventor's coordIndex saves memory but the rendering is very slow then
const cc_glglue * glue = cc_glglue_instance(action->getCacheContext());
PFNGLPRIMITIVERESTARTINDEXPROC glPrimitiveRestartIndex = (PFNGLPRIMITIVERESTARTINDEXPROC)
cc_glglue_getprocaddress(glue, "glPrimitiveRestartIndex");
int cnt = coordIndex.getNum();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
// https://www.opengl.org/discussion_boards/archive/index.php/t-180767.html
// https://www.khronos.org/opengl/wiki/Vertex_Rendering#Primitive_Restart
glPrimitiveRestartIndex(0xffffffff);
glEnable(GL_PRIMITIVE_RESTART);
//glEnable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_TRIANGLES, cnt, GL_UNSIGNED_INT, coordIndex.getValues(0));
glDisable(GL_PRIMITIVE_RESTART);
//glDisable(GL_PRIMITIVE_RESTART_FIXED_INDEX);
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
#else // Needs more memory but makes it very fast
(void)action;
int cnt = index_array.size();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_TRIANGLES, cnt, GL_UNSIGNED_INT, &(index_array[0]));
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
#endif
}
// Implementation | FPS
// ================================================
// drawCoords (every 4th vertex) | 20.0
// renderCoordsGLArray (all vertexes) | 20.0
//
void SoFCIndexedFaceSet::renderCoordsGLArray(SoGLRenderAction *action)
{
(void)action;
int cnt = index_array.size();
glEnableClientState(GL_NORMAL_ARRAY);
glEnableClientState(GL_VERTEX_ARRAY);
glInterleavedArrays(GL_N3F_V3F, 0, &(vertex_array[0]));
glDrawElements(GL_POINTS, cnt, GL_UNSIGNED_INT, &(index_array[0]));
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
render.generateGLArrays(state, matbind, face_vertices, face_indices);
}
void SoFCIndexedFaceSet::doAction(SoAction * action)