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Added basic object wrapper for VAOs

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This commit is contained in:
Robert 2021-01-20 16:51:55 +01:00
parent c3e49cd78e
commit 8921957161
7 changed files with 162 additions and 17 deletions
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56
src/object.cpp
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@ -12,10 +12,58 @@ namespace oglu
const VertexAttribute* topology, size_t topologySize) :
VAO(0)
{
GLuint VBO;
//glGenBuffers(1, &VBO);
topologySize /= sizeof(VertexAttribute);
//glBindBuffer(GL_ARRAY_BUFFER, VBO);
//glBufferData(GL_ARRAY_BUFFER, verticesSize, vertices, GL_STATIC_DRAW);
GLuint VBO;
glGenBuffers(1, &VBO);
GLuint EBO;
glGenBuffers(1, &EBO);
glGenVertexArrays(1, &VAO);
glBindVertexArray(VAO);
glBindBuffer(GL_ARRAY_BUFFER, VBO);
glBufferData(GL_ARRAY_BUFFER, verticesSize, vertices, GL_STATIC_DRAW);
glBindBuffer(GL_ELEMENT_ARRAY_BUFFER, EBO);
glBufferData(GL_ELEMENT_ARRAY_BUFFER, indicesSize, indices, GL_STATIC_DRAW);
for (int i = 0; i < topologySize; i++)
{
RegisterVertexAttribPointer(i, topology[i]);
}
glBindVertexArray(0);
count = indicesSize / sizeof(GLuint);
}
void Object::Bind()
{
glBindVertexArray(VAO);
}
void Object::Unbind()
{
}
void Object::Draw()
{
glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, (GLvoid*)0);
}
void Object::BindAndDraw()
{
glBindVertexArray(VAO);
glDrawElements(GL_TRIANGLES, count, GL_UNSIGNED_INT, (GLvoid*)0);
glBindVertexArray(0);
}
void Object::RegisterVertexAttribPointer(GLuint index, const VertexAttribute& topology)
{
glVertexAttribPointer(topology.index, topology.size, topology.type, topology.normalized, topology.stride, topology.pointer);
glEnableVertexAttribArray(index);
}
}