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 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 = NULL;
size_t start = 0;
size_t end = (datap->n_verts - 1);
size_t count = (end - (start * 3) + 1);
GLenum element_type = (datap->flags & VB_FLAG_LARGE_INDEX) ? GL_UNSIGNED_INT : GL_UNSIGNED_SHORT;
Assert(vert_source);
// basic setup of all data
opengl_init_arrays(vert_source, bufferp);
if ( vert_source->Ibuffer_handle >= 0 ) {
opengl_bind_buffer_object(vert_source->Ibuffer_handle);
} else {
ibuffer = (GLubyte*)vert_source->Index_list;
}
if ( Rendering_to_shadow_map ) {
glDrawElementsInstancedBaseVertex(GL_TRIANGLES, (GLsizei) count, element_type,
ibuffer + (datap->index_offset + start), 4, (GLint)bufferp->vertex_num_offset);
} else {
if ( Cmdline_drawelements ) {
glDrawElementsBaseVertex(GL_TRIANGLES, (GLsizei) count,
element_type, ibuffer + (datap->index_offset + start), (GLint)bufferp->vertex_num_offset);
} else {
glDrawRangeElementsBaseVertex(GL_TRIANGLES, datap->i_first, datap->i_last, (GLsizei) count,
element_type, ibuffer + (datap->index_offset + start), (GLint)bufferp->vertex_num_offset);
}
}
GL_state.Texture.SetShaderMode(GL_FALSE);
}
