namespace Msp {
namespace GL {
+ShadowMap::ShadowMap(Resources &resources, unsigned s, Renderable &r, const Light &l, Renderable &c):
+ Effect(r),
+ light(l),
+ shadow_caster(c),
+ sampler(resources.get<Sampler>("_linear_clamp_shadow.samp"))
+{
+ init(s);
+}
+
ShadowMap::ShadowMap(Resources &resources, unsigned s, Renderable &r, const Light &l):
Effect(r),
- size(s),
light(l),
- sampler(resources.get<Sampler>("_linear_clamp_shadow.samp")),
- radius(1),
- depth_bias(4),
- rendered(false)
+ shadow_caster(r),
+ sampler(resources.get<Sampler>("_linear_clamp_shadow.samp"))
+{
+ init(s);
+}
+
+void ShadowMap::init(unsigned s)
{
+ size = s;
+ radius = 1;
+ depth_bias = 4;
+ rendered = false;
+
depth_buf.storage(DEPTH_COMPONENT32F, size, size, 1);
fbo.attach(DEPTH_ATTACHMENT, depth_buf, 0);
fbo.require_complete();
rendered = true;
renderable.setup_frame(renderer);
+ shadow_caster.setup_frame(renderer);
- Camera camera;
- camera.set_object_matrix(*light.get_matrix());
- camera.set_position(target);
+ shadow_camera.set_object_matrix(*light.get_matrix());
+ shadow_camera.set_position(target);
// TODO support point and spot lights with a frustum projection.
// Omnidirectional lights also need a cube shadow map.
- camera.set_orthographic(radius*2, radius*2);
- camera.set_depth_clip(-radius, radius);
+ shadow_camera.set_orthographic(radius*2, radius*2);
+ shadow_camera.set_depth_clip(-radius, radius);
- shadow_matrix = camera.get_object_matrix();
+ shadow_matrix = shadow_camera.get_object_matrix();
shadow_matrix.scale(radius*2, radius*2, -radius*2);
shadow_matrix.translate(-0.5, -0.5, depth_bias/size-0.5);
shadow_matrix.invert();
fbo.clear(DEPTH_BUFFER_BIT);
Renderer::Push push(renderer);
- renderer.set_camera(camera);
+ renderer.set_camera(shadow_camera);
- renderer.render(renderable, "shadow");
+ renderer.render(shadow_caster);
}
void ShadowMap::finish_frame()
if(!enabled_passes.count(tag))
return renderer.render(renderable, tag);
- Renderer::Push _push_rend(renderer);
-
- unsigned unit = renderer.allocate_effect_texunit();
- int iunit = unit;
- shdata.uniform("shadow_map", iunit);
-
- Bind _bind_sampler(sampler, unit);
- Bind _bind_depth(depth_buf, unit);
-
if(const Camera *camera = renderer.get_camera())
/* Multiply by camera's object matrix to form a matrix that transforms
from eye space to shadow space. */
else
shdata.uniform("shd_eye_matrix", shadow_matrix);
+ Renderer::Push _push_rend(renderer);
+
+ renderer.set_texture("shadow_map", &depth_buf, &sampler);
renderer.add_shader_data(shdata);
renderer.render(renderable, tag);
}