void opengl_render_primitives(primitive_type prim_type, vertex_layout* layout, int n_verts, int buffer_handle, size_t vert_offset, size_t byte_offset)
{
GR_DEBUG_SCOPE("Render primitives");
Assertion(buffer_handle >= 0, "A valid buffer handle is required! Use the immediate buffer if data is not in GPU buffer yet.");
opengl_bind_vertex_layout(*layout, opengl_buffer_get_id(GL_ARRAY_BUFFER, buffer_handle), 0, byte_offset);
glDrawArrays(opengl_primitive_type(prim_type), (GLint)vert_offset, n_verts);
}
static void opengl_init_arrays(indexed_vertex_source *vert_src, vertex_buffer *bufferp)
{
GLubyte *ptr = NULL;
if ( vert_src->Vbuffer_handle >= 0 ) {
opengl_bind_buffer_object(vert_src->Vbuffer_handle);
} else {
ptr = (GLubyte*)vert_src->Vertex_list;
}
opengl_bind_vertex_layout(bufferp->layout, 0, ptr);
}
void gr_opengl_render_decals(decal_material* material_info,
primitive_type prim_type,
vertex_layout* layout,
int num_elements,
const indexed_vertex_source& binding) {
opengl_tnl_set_material_decal(material_info);
opengl_bind_vertex_layout(*layout,
opengl_buffer_get_id(GL_ARRAY_BUFFER, binding.Vbuffer_handle),
opengl_buffer_get_id(GL_ELEMENT_ARRAY_BUFFER, binding.Ibuffer_handle));
glDrawElements(opengl_primitive_type(prim_type), num_elements, GL_UNSIGNED_INT, nullptr);
}
void opengl_render_model_program(model_material* material_info, indexed_vertex_source *vert_source, vertex_buffer* bufferp, buffer_data *datap)
{
GL_state.Texture.SetShaderMode(GL_TRUE);
opengl_tnl_set_model_material(material_info);
GLubyte *ibuffer = reinterpret_cast<GLubyte*>(vert_source->Index_offset);
GLenum element_type = (datap->flags & VB_FLAG_LARGE_INDEX) ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT;
Assert(vert_source);
Assertion(vert_source->Vbuffer_handle >= 0, "The vertex data must be located in a GPU buffer!");
Assertion(vert_source->Ibuffer_handle >= 0, "The index values must be located in a GPU buffer!");
// basic setup of all data
opengl_bind_vertex_layout(bufferp->layout,
opengl_buffer_get_id(GL_ARRAY_BUFFER, vert_source->Vbuffer_handle),
opengl_buffer_get_id(GL_ELEMENT_ARRAY_BUFFER, vert_source->Ibuffer_handle));
// If GL_ARB_gpu_shader5 is supprted then the instancing is handled by the geometry shader
if ( !GLAD_GL_ARB_gpu_shader5 && Rendering_to_shadow_map ) {
glDrawElementsInstancedBaseVertex(GL_TRIANGLES,
(GLsizei) datap->n_verts,
element_type,
ibuffer + datap->index_offset,
4,
(GLint) (vert_source->Base_vertex_offset + bufferp->vertex_num_offset));
} else {
if (Cmdline_drawelements) {
glDrawElementsBaseVertex(GL_TRIANGLES,
(GLsizei) datap->n_verts,
element_type,
ibuffer + datap->index_offset,
(GLint) (vert_source->Base_vertex_offset + bufferp->vertex_num_offset));
} else {
glDrawRangeElementsBaseVertex(GL_TRIANGLES,
datap->i_first,
datap->i_last,
(GLsizei) datap->n_verts,
element_type,
ibuffer + datap->index_offset,
(GLint) (vert_source->Base_vertex_offset + bufferp->vertex_num_offset));
}
}
GL_state.Texture.SetShaderMode(GL_FALSE);
}
void gr_opengl_render_rocket_primitives(interface_material* material_info, primitive_type prim_type,
vertex_layout* layout, int n_indices, int vertex_buffer, int index_buffer)
{
GR_DEBUG_SCOPE("Render rocket ui primitives");
gr_set_2d_matrix();
opengl_tnl_set_rocketui_material(material_info);
opengl_bind_vertex_layout(*layout, opengl_buffer_get_id(GL_ARRAY_BUFFER, vertex_buffer),
opengl_buffer_get_id(GL_ELEMENT_ARRAY_BUFFER, index_buffer));
glDrawElements(opengl_primitive_type(prim_type), n_indices, GL_UNSIGNED_INT, nullptr);
gr_end_2d_matrix();
}