PulseStudio/VoxelEngine
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This commit is contained in:
MihailRis
2024-04-14 22:50:35 +03:00
parent f5b3f3c33f
commit a7a447552e
5 changed files with 99 additions and 76 deletions
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src/graphics/core/Mesh.cpp
+52 -52
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@@ -4,72 +4,72 @@
int Mesh::meshesCount = 0;
Mesh::Mesh(const float* vertexBuffer, size_t vertices, const int* indexBuffer, size_t indices, const vattr* attrs) :
ibo(0),
vertices(vertices),
indices(indices)
ibo(0),
vertices(vertices),
indices(indices)
{
meshesCount++;
vertexSize = 0;
for (int i = 0; attrs[i].size; i++) {
vertexSize += attrs[i].size;
}
meshesCount++;
vertexSize = 0;
for (int i = 0; attrs[i].size; i++) {
vertexSize += attrs[i].size;
}
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
glGenVertexArrays(1, &vao);
glGenBuffers(1, &vbo);
reload(vertexBuffer, vertices, indexBuffer, indices);
reload(vertexBuffer, vertices, indexBuffer, indices);
// attributes
int offset = 0;
for (int i = 0; attrs[i].size; i++) {
int size = attrs[i].size;
glVertexAttribPointer(i, size, GL_FLOAT, GL_FALSE, vertexSize * sizeof(float), (GLvoid*)(offset * sizeof(float)));
glEnableVertexAttribArray(i);
offset += size;
}
// attributes
int offset = 0;
for (int i = 0; attrs[i].size; i++) {
int size = attrs[i].size;
glVertexAttribPointer(i, size, GL_FLOAT, GL_FALSE, vertexSize * sizeof(float), (GLvoid*)(offset * sizeof(float)));
glEnableVertexAttribArray(i);
offset += size;
}
glBindVertexArray(0);
glBindVertexArray(0);
}
Mesh::~Mesh(){
meshesCount--;
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
if (ibo != 0) glDeleteBuffers(1, &ibo);
meshesCount--;
glDeleteVertexArrays(1, &vao);
glDeleteBuffers(1, &vbo);
if (ibo != 0) glDeleteBuffers(1, &ibo);
}
void Mesh::reload(const float* vertexBuffer, size_t vertices, const int* indexBuffer, size_t indices){
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
if (vertexBuffer != nullptr && vertices != 0) {
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * vertexSize * vertices, vertexBuffer, GL_STATIC_DRAW);
}
else {
glBufferData(GL_ARRAY_BUFFER, 0, {}, GL_STATIC_DRAW);
}
if (indexBuffer != nullptr && indices != 0) {
if (ibo == 0) glGenBuffers(1, &ibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int) * indices, indexBuffer, GL_STATIC_DRAW);
}
else if (ibo != 0) {
glDeleteBuffers(1, &ibo);
}
this->vertices = vertices;
this->indices = indices;
glBindVertexArray(vao);
glBindBuffer(GL_ARRAY_BUFFER, vbo);
if (vertexBuffer != nullptr && vertices != 0) {
glBufferData(GL_ARRAY_BUFFER, sizeof(float) * vertexSize * vertices, vertexBuffer, GL_STATIC_DRAW);
}
else {
glBufferData(GL_ARRAY_BUFFER, 0, {}, GL_STATIC_DRAW);
}
if (indexBuffer != nullptr && indices != 0) {
if (ibo == 0) glGenBuffers(1, &ibo);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, ibo);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, sizeof(int) * indices, indexBuffer, GL_STATIC_DRAW);
}
else if (ibo != 0) {
glDeleteBuffers(1, &ibo);
}
this->vertices = vertices;
this->indices = indices;
}
void Mesh::draw(unsigned int primitive){
glBindVertexArray(vao);
if (ibo != 0) {
glDrawElements(primitive, indices, GL_UNSIGNED_INT, 0);
}
else {
glDrawArrays(primitive, 0, vertices);
}
glBindVertexArray(0);
glBindVertexArray(vao);
if (ibo != 0) {
glDrawElements(primitive, indices, GL_UNSIGNED_INT, 0);
}
else {
glDrawArrays(primitive, 0, vertices);
}
glBindVertexArray(0);
}
void Mesh::draw() {
draw(GL_TRIANGLES);
}
draw(GL_TRIANGLES);
}