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Document code, and clean up

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This commit is contained in:
PedroEdiaz
2024-10-21 16:50:49 -06:00
parent 6e54aa9fea
commit 17e1cf8804
13 changed files with 245 additions and 193 deletions
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37
src/mesh.c
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@@ -7,8 +7,15 @@ struct obj
unsigned int vertex, vao, n_vbo, d_vbo;
};
/*
In this function we load all the vertex and normal datas on two
diferents buffers, so we can access the coordanates that we want
to display using the layout location in GLSL.
This trick can be done with glVertexAttribPointer.
*/
mesh_t create_mesh( float * d, float * n, unsigned char * coordanate )
{
unsigned char i;
struct obj * p;
p=malloc(sizeof(struct obj));
@@ -22,27 +29,25 @@ mesh_t create_mesh( float * d, float * n, unsigned char * coordanate )
glBindBuffer( GL_ARRAY_BUFFER, p->d_vbo );
glBufferData( GL_ARRAY_BUFFER, p->vertex*3*sizeof(float), d+1,
GL_STATIC_DRAW );
glVertexAttribPointer( 0,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[0]*sizeof(float)) );
glEnableVertexAttribArray(0);
glVertexAttribPointer( 1,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[1]*sizeof(float)) );
glEnableVertexAttribArray(1);
glVertexAttribPointer( 2,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[2]*sizeof(float)) );
glEnableVertexAttribArray(2);
glVertexAttribPointer( 3,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[3]*sizeof(float)) );
glEnableVertexAttribArray(3);
for( i=0; i<4; ++i )
{
glVertexAttribPointer( i,1,GL_FLOAT, 0, 3*sizeof(float),
(float*)(coordanate[i]*sizeof(float)) );
glEnableVertexAttribArray(i);
}
glGenBuffers( 1, &p->n_vbo );
glBindBuffer( GL_ARRAY_BUFFER, p->n_vbo );
glBufferData( GL_ARRAY_BUFFER, p->vertex*3*sizeof(float), n+1,
GL_STATIC_DRAW );
glVertexAttribPointer( 4,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[0]*sizeof(float)) );
glEnableVertexAttribArray(4);
glVertexAttribPointer( 5,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[1]*sizeof(float)) );
glEnableVertexAttribArray(5);
glVertexAttribPointer( 6,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[2]*sizeof(float)) );
glEnableVertexAttribArray(6);
glVertexAttribPointer( 7,1,GL_FLOAT, 0, 3*sizeof(float), (float*)(coordanate[3]*sizeof(float)) );
glEnableVertexAttribArray(7);
for( i=0; i<4; ++i )
{
glVertexAttribPointer( i+4,1,GL_FLOAT, 0, 3*sizeof(float),
(float*)(coordanate[i]*sizeof(float)) );
glEnableVertexAttribArray(i+4);
}
return p;
}