78 lines
2.5 KiB
C++
78 lines
2.5 KiB
C++
#include "Mesh.h"
|
||
|
||
Mesh::Mesh(QOpenGLFunctions_4_5_Compatibility* glFunc, QOpenGLShaderProgram* shaderProgram, aiMatrix4x4 model)
|
||
: glFunc(glFunc)
|
||
, shaderProgram(shaderProgram)
|
||
, VBO(QOpenGLBuffer::VertexBuffer)
|
||
, EBO(QOpenGLBuffer::IndexBuffer)
|
||
{
|
||
|
||
for (int i = 0; i < 4; i++) {
|
||
for (int j = 0; j < 4; j++) {
|
||
this->model(i, j) = model[i][j];
|
||
}
|
||
}
|
||
}
|
||
void Mesh::Draw()
|
||
{
|
||
unsigned int diffuseNr = 1;
|
||
unsigned int specularNr = 1;
|
||
unsigned int normalNr = 1;
|
||
unsigned int heightNr = 1;
|
||
|
||
for (unsigned int i = 0; i < textures.size(); i++)
|
||
{
|
||
glFunc->glActiveTexture(GL_TEXTURE0 + i); // 在绑定之前激活相应的纹理单元
|
||
// 获取纹理序号（diffuse_textureN 中的 N）
|
||
QString number;
|
||
QString name = textures[i]->type;
|
||
if (name == "texture_diffuse")
|
||
number = QString::number(diffuseNr++);
|
||
else if (name == "texture_specular")
|
||
number = QString::number(specularNr++);
|
||
else if (name == "texture_normal")
|
||
number = QString::number(normalNr++); // transfer unsigned int to stream
|
||
else if (name == "texture_height")
|
||
number = QString::number(heightNr++); // transfer unsigned int to stream
|
||
textures[i]->texture.bind();
|
||
shaderProgram->setUniformValue((name + number).toStdString().c_str(), i);
|
||
}
|
||
// 绘制网格
|
||
|
||
QOpenGLVertexArrayObject::Binder bind(&VAO);
|
||
shaderProgram->setUniformValue("model", model);
|
||
glFunc->glDrawElements(GL_TRIANGLES, indices.size(), GL_UNSIGNED_INT, 0);
|
||
}
|
||
void Mesh::setupMesh()
|
||
{
|
||
|
||
VAO.create();
|
||
VAO.bind();
|
||
|
||
VBO.create();
|
||
EBO.create();
|
||
|
||
VBO.bind();
|
||
VBO.allocate(vertices.data(), vertices.size() * sizeof(Vertex));
|
||
|
||
EBO.bind();
|
||
EBO.allocate(indices.data(), indices.size() * sizeof(unsigned int));
|
||
|
||
|
||
shaderProgram->enableAttributeArray(0);
|
||
shaderProgram->setAttributeBuffer(0, GL_FLOAT, 0, 3, sizeof(Vertex));
|
||
|
||
shaderProgram->enableAttributeArray(1);
|
||
shaderProgram->setAttributeBuffer(1, GL_FLOAT, offsetof(Vertex, Normal), 3, sizeof(Vertex));
|
||
|
||
shaderProgram->enableAttributeArray(2);
|
||
shaderProgram->setAttributeBuffer(2, GL_FLOAT, offsetof(Vertex, TexCoords), 2, sizeof(Vertex));
|
||
|
||
shaderProgram->enableAttributeArray(1);
|
||
shaderProgram->setAttributeBuffer(3, GL_FLOAT, offsetof(Vertex, Tangent), 3, sizeof(Vertex));
|
||
|
||
shaderProgram->enableAttributeArray(1);
|
||
shaderProgram->setAttributeBuffer(4, GL_FLOAT, offsetof(Vertex, Bitangent), 3, sizeof(Vertex));
|
||
VAO.release();
|
||
}
|