mirror of https://github.com/axmolengine/axmol.git
119 lines
3.0 KiB
C++
119 lines
3.0 KiB
C++
|
|
||
|
|
|
||
|
|
#include "base/CCDirector.h"
|
||
|
|
#include "2d/CCVertexAttribBind.h"
|
||
|
|
#include "2d/ccGLStateCache.h"
|
||
|
|
#include "base/ccMacros.h"
|
||
|
|
#include "2d/platform/CCFileUtils.h"
|
||
|
|
#include "2d/uthash.h"
|
||
|
|
#include "deprecated/CCString.h"
|
||
|
|
|
||
|
|
NS_CC_BEGIN
|
||
|
|
|
||
|
|
VertexAttribType::VertexAttribType(): _type(GL_FLOAT), _size(0), _location(-1), _offset(0)
|
||
|
|
{
|
||
|
|
}
|
||
|
|
VertexAttribType::VertexAttribType(GLenum type, int size): _type(type), _size(size), _location(-1), _offset(0)
|
||
|
|
{
|
||
|
|
switch (type) {
|
||
|
|
case GL_FLOAT_VEC2:
|
||
|
|
_type = GL_FLOAT;
|
||
|
|
_size = 2;
|
||
|
|
break;
|
||
|
|
case GL_FLOAT_VEC3:
|
||
|
|
_type = GL_FLOAT;
|
||
|
|
_size = 3;
|
||
|
|
break;
|
||
|
|
case GL_FLOAT_VEC4:
|
||
|
|
_type = GL_FLOAT;
|
||
|
|
_size = 4;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int VertexAttribType::getByteSize()
|
||
|
|
{
|
||
|
|
int byteSize = 0;
|
||
|
|
switch (_type) {
|
||
|
|
case GL_BYTE:
|
||
|
|
case GL_UNSIGNED_BYTE:
|
||
|
|
byteSize = _size;
|
||
|
|
break;
|
||
|
|
case GL_SHORT:
|
||
|
|
case GL_UNSIGNED_SHORT:
|
||
|
|
byteSize = _size * sizeof(GLshort);
|
||
|
|
break;
|
||
|
|
case GL_FLOAT:
|
||
|
|
byteSize = _size * sizeof(GLfloat);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
CCASSERT(0,"type error");
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
return byteSize;
|
||
|
|
}
|
||
|
|
|
||
|
|
VertexAttribBind::VertexAttribBind(const VertexAttribType* elem, int count)
|
||
|
|
{
|
||
|
|
setVertexAttribElems(elem, count);
|
||
|
|
}
|
||
|
|
|
||
|
|
VertexAttribBind::VertexAttribBind(const std::vector<VertexAttribType>& elems)
|
||
|
|
{
|
||
|
|
setVertexAttribElems(&elems[0], elems.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
VertexAttribBind::VertexAttribBind(const std::vector<GLProgramData::VertexAttib*>& attribs)
|
||
|
|
{
|
||
|
|
std::vector<VertexAttribType> elems;
|
||
|
|
for (auto it = attribs.begin(); it != attribs.end(); it++) {
|
||
|
|
VertexAttribType type((*it)->_type, (*it)->_size);
|
||
|
|
type._location = (*it)->_index;
|
||
|
|
elems.push_back(type);
|
||
|
|
}
|
||
|
|
setVertexAttribElems(&elems[0], elems.size());
|
||
|
|
}
|
||
|
|
|
||
|
|
VertexAttribBind::~VertexAttribBind()
|
||
|
|
{
|
||
|
|
delete[] _vertexAttribs;
|
||
|
|
}
|
||
|
|
|
||
|
|
void VertexAttribBind::bindAttribute(int index, int attribLocation)
|
||
|
|
{
|
||
|
|
//make sure index and attribute location are validate
|
||
|
|
_vertexAttribs[index]._location = attribLocation;
|
||
|
|
}
|
||
|
|
|
||
|
|
//bind attributes pointer
|
||
|
|
void VertexAttribBind::bindAttributePtr(void* vertexPointer)
|
||
|
|
{
|
||
|
|
for (auto i = 0; i < _vertexAtttribCount; i++) {
|
||
|
|
auto elem = _vertexAttribs[i];
|
||
|
|
if (elem._location != -1)
|
||
|
|
{
|
||
|
|
glEnableVertexAttribArray(elem._location);
|
||
|
|
void* pointer = vertexPointer ? (void*)(((unsigned char*)vertexPointer) + elem._offset) : (void*)elem._offset;
|
||
|
|
glVertexAttribPointer(elem._location, elem._size, elem._type, GL_FALSE, _stride, pointer);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
void VertexAttribBind::setVertexAttribElems(const VertexAttribType* elem, int count)
|
||
|
|
{
|
||
|
|
_vertexAtttribCount = count;
|
||
|
|
_vertexAttribs = new VertexAttribType[count];
|
||
|
|
_stride = 0;
|
||
|
|
for (auto i = 0; i < count; i++) {
|
||
|
|
_vertexAttribs[i] = elem[i];
|
||
|
|
_vertexAttribs[i]._offset = _stride;
|
||
|
|
_stride += _vertexAttribs[i].getByteSize();
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
NS_CC_END
|