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only loading one's model data to the GPU once

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devZoGok
2025-06-15 18:41:52 +03:00
parent 6f7702cb19
commit 08907567b0
8 changed files with 150 additions and 125 deletions
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meshData.cpp
+75
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@@ -1,8 +1,83 @@
#include "meshData.h"
#include "glad.h"
#include <glfw3.h>
#include <glm.hpp>
#include <ext.hpp>
using namespace std;
namespace vb01{
//TODO allow to init meshes to be drawn statically or dynamically
MeshData::MeshData(
Vector3 *pos,
float **w,
int **bi,
Vector3 **sko,
int np,
Vector3 *norm,
Vertex *vert,
u32 *ind,
int nt,
std::string an,
std::string *vg,
int nvg,
std::string fsn,
ShapeKey *sk,
int nsk
) :
positions(pos),
weights(w),
boneIndices(bi),
shapeKeyOffsets(sko),
numPos(np),
normals(norm),
vertices(vert),
indices(ind),
numTris(nt),
vertexGroups(vg),
numVertexGroups(nvg),
fullSkeletonName(fsn),
shapeKeys(sk),
numShapeKeys(nsk)
{
glGenVertexArrays(1, &VAO);
glGenBuffers(1, &VBO);
glGenBuffers(1, &EBO);
u32 size = sizeof(MeshData::GpuVertex);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
MeshData::GpuVertex *glVertData = toGpuVerts();
glBufferData(GL_ARRAY_BUFFER, 3 * numTris * size, glVertData, GL_DYNAMIC_DRAW);
delete glVertData;
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, 3 * numTris * sizeof(u32), indices, GL_STATIC_DRAW);
glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, size, (void*)0);
glEnableVertexAttribArray(0);
glVertexAttribPointer(1, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, norm)));
glEnableVertexAttribArray(1);
glVertexAttribPointer(2, 2, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, uv)));
glEnableVertexAttribArray(2);
glVertexAttribPointer(3, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, tan)));
glEnableVertexAttribArray(3);
glVertexAttribPointer(4, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, biTan)));
glEnableVertexAttribArray(4);
glVertexAttribPointer(5, 4, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, weights)));
glEnableVertexAttribArray(5);
glVertexAttribPointer(6, 4, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, boneIndices)));
glEnableVertexAttribArray(6);
for(int i = 0; i < numShapeKeys; i++){
glVertexAttribPointer(7 + i, 3, GL_FLOAT, GL_FALSE, size, (void*)(offsetof(MeshData::GpuVertex, shapeKeyOffsets) + 3 * i * sizeof(float)));
glEnableVertexAttribArray(7 + i);
}
}
void MeshData::ShapeKey::animate(float value, KeyframeChannel keyframeChannel){
switch(keyframeChannel.type){
case KeyframeChannel::SHAPE_KEY_MIN: