void ZMinMax::minmax(const GraphicContextPtr &gc)
{
update_buffers(gc);
normal_z->set_min_filter(filter_nearest);
normal_z->set_mag_filter(filter_nearest);
normal_z->set_wrap_mode(wrap_clamp_to_edge, wrap_clamp_to_edge);
gc->set_primitives_array(prim_array);
gc->set_program_object(program0);
gc->set_blend_state(blend_state);
Size texture_size = find_texture_size(normal_z);
for (int i = 0; i < iterations; i++)
{
if (i == 1)
gc->set_program_object(program1);
int iteration_width = texture_size.width >> i;
int iteration_height = texture_size.height >> i;
gc->set_frame_buffer((i % 2 == 0) ? fb0 : fb1);
gc->set_viewport(Size(iteration_width, iteration_height), gc->texture_image_y_axis());
if (i == 0)
gc->set_texture(0, normal_z);
else
gc->set_texture(0, (i % 2 == 0) ? texture1 : texture0);
gc->draw_primitives_array(type_triangles, 6);
}
gc->reset_texture(0);
gc->reset_program_object();
gc->reset_primitives_array();
gc->reset_frame_buffer();
gc->set_viewport(viewport.size(), gc->texture_image_y_axis());
}
void LightsourceSimplePass::render(const GraphicContextPtr &gc, GPUTimer &timer)
{
ScopeTimeFunction();
//timer.begin_time(gc, "light(simple)");
gc->set_frame_buffer(inout.fb_final_color);
gc->set_viewport(inout.viewport.size(), gc->texture_image_y_axis());
gc->set_depth_range(0.0f, 0.9f);
gc->set_uniform_buffer(0, uniforms);
gc->set_texture(0, light_instance_texture);
gc->set_texture(1, inout.normal_z_gbuffer);
gc->set_texture(2, inout.diffuse_color_gbuffer);
gc->set_texture(3, inout.specular_color_gbuffer);
gc->set_texture(4, inout.specular_level_gbuffer);
gc->set_texture(5, inout.shadow_maps);
gc->set_texture(6, inout.self_illumination_gbuffer);
gc->set_blend_state(blend_state);
gc->clear();
// To do: use icosahedron for smaller lights and when the camera is not inside the light influence sphere
// To do: combine multiple lights into the same rect pass to reduce overdraw penalty
gc->set_depth_stencil_state(rect_depth_stencil_state);
gc->set_rasterizer_state(rect_rasterizer_state);
gc->set_program_object(rect_light_program);
gc->set_primitives_array(rect_prim_array);
gc->draw_primitives_array_instanced(type_triangles, 0, 6, std::max(lights.size(), (size_t)1));
gc->reset_primitives_array();
/*
gc->set_depth_stencil_state(icosahedron_depth_stencil_state);
gc->set_rasterizer_state(icosahedron_rasterizer_state);
gc->set_program_object(icosahedron_light_program);
gc->set_primitives_array(icosahedron_prim_array);
gc->draw_primitives_elements_instanced(type_triangles, icosahedron->num_elements, icosahedron->elements, 0, lights.size());
gc->reset_primitives_array();
*/
gc->set_depth_stencil_state(icosahedron_depth_stencil_state);
gc->set_rasterizer_state(icosahedron_rasterizer_state);
gc->set_program_object(icosahedron_light_program);
gc->set_primitives_array(icosahedron_prim_array);
gc->draw_primitives_elements_instanced(type_triangles, icosahedron->num_elements, icosahedron->elements, type_unsigned_int, 0, lights.size());
gc->reset_primitives_array();
//timer.end_time(gc);
//timer.begin_time(gc, "light(simple)");
gc->reset_texture(6);
gc->reset_texture(5);
gc->reset_texture(4);
gc->reset_texture(3);
gc->reset_texture(2);
gc->reset_texture(1);
gc->reset_texture(0);
gc->reset_uniform_buffer(0);
//timer.end_time(gc);
}