72 lines
3.1 KiB
C++
72 lines
3.1 KiB
C++
/*******************************************************************************
|
|
*
|
|
* Copyright (c) 2018 Gnarly Narwhal
|
|
*
|
|
* -----------------------------------------------------------------------------
|
|
*
|
|
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
* of this software and associated documentation files(the "Software"), to deal
|
|
* in the Software without restriction, including without limitation the rights
|
|
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
* copies of the Software, and to permit persons to whom the Software is
|
|
* furnished to do so, subject to the following conditions
|
|
*
|
|
* The above copyright notice and this permission notice shall be included in all
|
|
* copies or substantial portions of the Software.
|
|
*
|
|
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
* SOFTWARE.
|
|
*
|
|
*******************************************************************************/
|
|
|
|
#include "GenoGL.h"
|
|
|
|
#include "GenoVao.h"
|
|
|
|
template <typename T>
|
|
struct GenoVertexAttribType {};
|
|
|
|
template<> struct GenoVertexAttribType< int8 > { const static uint32 TYPE = GL_UNSIGNED_BYTE; };
|
|
template<> struct GenoVertexAttribType<uint8 > { const static uint32 TYPE = GL_BYTE; };
|
|
template<> struct GenoVertexAttribType< int16> { const static uint32 TYPE = GL_UNSIGNED_SHORT; };
|
|
template<> struct GenoVertexAttribType<uint16> { const static uint32 TYPE = GL_SHORT; };
|
|
template<> struct GenoVertexAttribType< int32> { const static uint32 TYPE = GL_UNSIGNED_INT; };
|
|
template<> struct GenoVertexAttribType<uint32> { const static uint32 TYPE = GL_INT; };
|
|
template<> struct GenoVertexAttribType<float > { const static uint32 TYPE = GL_FLOAT; };
|
|
template<> struct GenoVertexAttribType<double> { const static uint32 TYPE = GL_DOUBLE; };
|
|
|
|
GenoVao::GenoVao(uint32 num, float verts[], uint32 count, uint32 indices[]) {
|
|
this->count = count;
|
|
glGenVertexArrays(1, &vao);
|
|
addAttrib(num, 3, verts);
|
|
glGenBuffers(1, &ibo);
|
|
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
|
|
glBufferData(GL_ELEMENT_ARRAY_BUFFER, count * sizeof(int32), indices, GL_STATIC_DRAW);
|
|
}
|
|
|
|
template <typename T>
|
|
void GenoVao::addAttrib(uint32 num, uint32 stride, T data[]) {
|
|
glBindVertexArray(vao);
|
|
glGenBuffers(1, vbos + attribs);
|
|
glBindBuffer(GL_ARRAY_BUFFER, vbos[attribs]);
|
|
glBufferData(GL_ARRAY_BUFFER, stride * num * sizeof(T), data, GL_STATIC_DRAW);
|
|
glVertexAttribPointer(attribs, stride, GenoVertexAttribType<T>::TYPE, GL_FALSE, 0, (void*) 0);
|
|
glEnableVertexAttribArray(attribs);
|
|
++attribs;
|
|
}
|
|
|
|
void GenoVao::render() {
|
|
glBindVertexArray(vao);
|
|
glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, 0);
|
|
}
|
|
|
|
GenoVao::~GenoVao() {
|
|
glDeleteBuffers(attribs, vbos);
|
|
glDeleteBuffers(1, &ibo);
|
|
glDeleteVertexArrays(1, &vao);
|
|
}
|