void PrelightPipeline::DrawQuad(const std::shared_ptr<Pass> &pass)
{
auto shader = m_CurrentShader;
auto mesh = MeshUtil::Instance()->GetUnitQuad();
if (shader == nullptr)
{
LOGW << "Failed to draw full screen quad, shader not found!";
return;
}
shader->Bind();
shader->BindMesh(mesh);
shader->BindCamera(m_CurrentCamera);
for (unsigned int i = 0; i < pass->GetTextureCount(true); i++)
{
auto ptr = pass->GetTextureAt(i, true);
shader->BindTexture(ptr->GetName(), ptr);
}
glDrawElements(GL_TRIANGLES, mesh->Indices.Data.size(), GL_UNSIGNED_INT, 0);
shader->UnBind();
m_DrawCall++;
}
//Create the buffers and store the mesh data in them
void LoadMesh(MeshBuffers *buffers, MeshData *data, Vertex *vertices, unsigned int verticesCount, unsigned int *indices, unsigned int indicesCount)
{
data->VerticesCount = verticesCount;
data->IndicesCount = indicesCount;
data->Vertices = vertices;
data->Indices = indices;
//Use only with newer GLSL versions
#if GLSL_VERSION == MODERN_VERSION
//Generate a handle to a vertex array object
glGenVertexArrays(1, &buffers->VAO);
#endif
//Generate a handle to a vertex buffer object
glGenBuffers(1, &buffers->VBO);
//Generate a handle to a element buffer object
glGenBuffers(1, &buffers->EBO);
//Bind the vertex array object (it will begin storing what is happening below
BindMesh(buffers);
//Create a Vertex buffer
InitVBO(buffers, data);
//Create an Element buffer
InitEBO(buffers, data);
//Unbind everything
UnbindMesh();
}
//Draw the mesh
void DrawMesh(Mesh *mesh)
{
//Bind the buffers
BindMesh(&mesh->Buffers);
BindTexture(&mesh->MeshTexture);
//Draw the mesh
glDrawElements(GL_TRIANGLES //Drawing type
, mesh->Data.IndicesCount //Number of indices
, GL_UNSIGNED_INT //Indices type
, 0); //The location of the indices (NULL means to look for them in the buffer)
//Unbind the buffers
UnbindMesh();
UnbindTexture();
}
void PrelightPipeline::DrawRenderable(const std::shared_ptr<Pass> &pass, const std::shared_ptr<SceneNode> &node)
{
auto render = node->GetComponent<MeshRender>();
if (render == nullptr || !render->GetRenderable())
return;
auto mesh = render->GetMesh();
auto material = render->GetMaterial();
auto shader = material->GetShaderForPass(pass->GetRenderIndex());
if (shader == nullptr)
shader = pass->GetShader(material->GetShaderType());
if (shader == nullptr)
{
LOGW << "Failed to draw " << node->GetName() << ", data incomplete!";
return;
}
shader->Bind();
shader->BindCamera(m_CurrentCamera);
shader->BindMatrix(Matrix4::WORLD_MATRIX, node->GetWorldMatrix());
shader->BindMesh(mesh);
shader->BindMaterial(material);
for (unsigned int i = 0; i < pass->GetTextureCount(true); i++)
{
auto ptr = pass->GetTextureAt(i, true);
shader->BindTexture(ptr->GetName(), ptr);
}
glDrawElements(GL_TRIANGLES, mesh->Indices.Data.size(), GL_UNSIGNED_INT, 0);
shader->UnBind();
m_DrawCall++;
}
