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Deferred renderer: make shadow map size an explicit rendering parameter

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This commit is contained in:
Nikita Lisitsa 2020-12-12 18:30:26 +03:00
parent 68cdd22083
commit 59888bd5eb
2 changed files with 18 additions and 11 deletions
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2
libs/gfx/include/psemek/gfx/renderer/deferred.hpp
View file

@ -70,6 +70,7 @@ namespace psemek::gfx
color_3f color;
geom::vector<float, 3> direction;
bool shadowed = true;
std::size_t shadow_map_size = 1024;
};
struct point_light
@ -83,6 +84,7 @@ namespace psemek::gfx
geom::point<float, 3> position;
bool shadowed = true;
float min_shadow_distance;
std::size_t shadow_map_size = 1024;
};
struct options

27
libs/gfx/source/renderer/deferred.cpp
View file

@ -820,8 +820,6 @@ void main()
gfx::array box_array;
};
static int const shadow_map_size = 1024;
deferred_renderer::deferred_renderer()
: pimpl_{std::make_unique<struct impl>()}
{
@ -854,24 +852,15 @@ void main()
impl().point_light_pass_program["u_g3"] = 3;
impl().point_light_pass_program["u_shadow"] = 4;
impl().directional_shadow_texture.load<gfx::depth24_pixel>({shadow_map_size, shadow_map_size});
impl().directional_shadow_texture.linear_filter();
impl().directional_shadow_texture.clamp();
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_COMPARE_MODE, gl::COMPARE_REF_TO_TEXTURE);
gl::TexParameteri(gl::TEXTURE_2D, gl::TEXTURE_COMPARE_FUNC, gl::LEQUAL);
impl().directional_shadow_framebuffer.depth(impl().directional_shadow_texture);
impl().directional_shadow_framebuffer.assert_complete();
impl().point_shadow_texture.linear_filter();
impl().point_shadow_texture.clamp();
gl::TexParameteri(gl::TEXTURE_CUBE_MAP, gl::TEXTURE_COMPARE_MODE, gl::COMPARE_REF_TO_TEXTURE);
gl::TexParameteri(gl::TEXTURE_CUBE_MAP, gl::TEXTURE_COMPARE_FUNC, gl::LEQUAL);
for (int f = 0; f < 6; ++f)
{
impl().point_shadow_texture.load<gfx::depth24_pixel>(f, {shadow_map_size, shadow_map_size});
}
impl().point_shadow_framebuffer.depth(impl().point_shadow_texture);
impl().point_shadow_framebuffer.assert_complete();
for (std::size_t i = 0; i < 3; ++i)
{
@ -1528,6 +1517,14 @@ void main()
impl().directional_shadow_framebuffer.bind();
gl::DrawBuffer(gl::NONE);
if (impl().directional_shadow_texture.width() != l.shadow_map_size)
{
impl().directional_shadow_texture.load<depth24_pixel>({l.shadow_map_size, l.shadow_map_size});
impl().directional_shadow_framebuffer.depth(impl().directional_shadow_texture);
impl().directional_shadow_framebuffer.assert_complete();
}
gl::Viewport(0, 0, impl().directional_shadow_texture.width(), impl().directional_shadow_texture.height());
gl::Clear(gl::DEPTH_BUFFER_BIT);
@ -1681,6 +1678,14 @@ void main()
geom::matrix<float, 4, 4> const translate_by_light = geom::translation<float, 3>(geom::point<float, 3>::zero() - l.position).homogeneous_matrix();
impl().point_shadow_framebuffer.bind();
if (impl().point_shadow_texture.width() != l.shadow_map_size)
{
for (int f = 0; f < 6; ++f)
impl().point_shadow_texture.load<depth24_pixel>(f, {l.shadow_map_size, l.shadow_map_size});
impl().point_shadow_framebuffer.depth(impl().point_shadow_texture);
impl().point_shadow_framebuffer.assert_complete();
}
gl::DrawBuffer(gl::NONE);
gl::Viewport(0, 0, impl().point_shadow_texture.width(), impl().point_shadow_texture.height());