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Code Issues 154 Wiki Activity

Cast shadows of the cab lamp from the cab in the GL 4.6 renderer

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This commit is contained in:
Hirek
2026-10-16 02:43:27 +02:00
parent 4d3a401aae
commit 06d7b9e9f0
15 changed files with 568 additions and 8 deletions
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64
rendering/opengl46/opengl46renderer.cpp
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@@ -191,6 +191,7 @@ bool opengl46_renderer::Init(GLFWwindow *Window)
m_instancecull.init();
m_exposure.init();
m_ao.init();
m_localshadows.init();
}
catch (gl::shader_exception const &e)
{
@@ -723,6 +724,7 @@ void opengl46_renderer::SwapBuffers()
m_debugtimestext += m_exposure.info_times();
m_debugtimestext += m_ao.info_times();
m_debugtimestext += m_instancecull.info_times();
m_debugtimestext += m_localshadows.info_times();
m_debugtimestext += "uilayer: " + to_string( Timer::subsystem.gfx_gui.average(), 2 ) + " ms\n";
if( DebugModeFlag )
m_debugtimestext += m_textures.info();
@@ -765,6 +767,7 @@ void opengl46_renderer::SwapBuffers()
+ " (" + std::to_string( m_lights_dropped ) + " over capacity), "
+ ( Global.gfx_lights_clustered ? "clustered" : "first " + std::to_string( std::max( Global.DynamicLightCount, 0 ) ) )
+ "\n" + m_locallights.info()
+ m_localshadows.info()
+ m_instancecull.info();
if( auto const cullstats = ( m_viewports.empty() || !( Global.gfx_lights_clustered || Global.gfx_lights_clusterheatmap ) ? std::nullopt : m_viewports.front()->clusters->stats() ) ) {
m_debugstatstext +=
@@ -813,6 +816,8 @@ void opengl46_renderer::draw_debug_ui()
}
ImGui::Separator();
m_locallights.draw_debug_ui();
ImGui::Separator();
m_localshadows.draw_debug_ui();
}
ImGui::End();
@@ -931,6 +936,8 @@ void opengl46_renderer::Render_pass(viewport_config &vp, rendermode const Mode)
setup_shadow_empty_map();
setup_env_map(nullptr);
// the cube shadow maps of the lamps, or the stand-in for them
m_localshadows.bind();
if (Global.gfx_shadowmap_enabled && vp.main)
{
@@ -959,6 +966,9 @@ void opengl46_renderer::Render_pass(viewport_config &vp, rendermode const Mode)
setup_env_map(m_env_tex.get());
}
if (vp.main)
Render_local_shadows();
glClearColor(0.0f, 0.0f, 0.0f, 0.0f);
setup_drawing(false);
@@ -2478,12 +2488,21 @@ void opengl46_renderer::Bind_Material_Shadow(material_handle const Material)
if (material.textures[0] != null_handle)
{
m_textures.bind(0, material.textures[0]);
m_alpha_shadow_shader->bind();
if (m_cubeshadows)
m_localshadows.program(true).bind();
else
m_alpha_shadow_shader->bind();
}
else if (m_cubeshadows) {
m_localshadows.program(false).bind();
}
else {
m_shadow_shader->bind();
}
}
else if (m_cubeshadows) {
m_localshadows.program(false).bind();
}
else {
m_shadow_shader->bind();
}
@@ -6138,8 +6157,22 @@ void opengl46_renderer::Update_Lights(light_array &Lights, bool const Headlights
m_cablamplit = false;
if( locallights ) {
if( auto const *lamp{ m_locallights.cab_lamp() } ) {
Write_Local_Light( light_data.lights[ light_i++ ], *lamp, camera, mv );
auto &light{ light_data.lights[ light_i++ ] };
Write_Local_Light( light, *lamp, camera, mv );
m_cablamplit = true;
auto const *vehicle{ m_locallights.cab_lamp_vehicle() };
if( m_localshadows.ready( vehicle ) ) {
// view space to the space of the map: the space of the cab model, with the lamp at the origin. the vehicle is
// where it is now, the map stays right as it moves
auto const toworld{ glm::dmat4{ glm::transpose( glm::mat3{ mv } ) } };
auto const tomap{
glm::translate( glm::dmat4{ 1.0 }, -glm::dvec3{ m_localshadows.lamp() } )
* glm::inverse( vehicle->mMatrix )
* glm::translate( glm::dmat4{ 1.0 }, camera - vehicle->GetPosition() )
* toworld };
light.headlight_projection = glm::mat4{ tomap };
light.headlight_weights = m_localshadows.weights();
}
}
}
auto const headlightsstart{light_i};
@@ -6311,7 +6344,32 @@ void opengl46_renderer::Write_Local_Light(gl::light_element &Light, opengl46_loc
Light.linear = 0.0f;
Light.quadratic = 1.0f / sq(std::max(Source.range, 0.01f));
Light.headlight_projection = glm::mat4{1.0f};
Light.headlight_weights = glm::vec4{0.0f};
// no shadow map
Light.headlight_weights = glm::vec4{-1.0f, 0.0f, 0.0f, 0.0f};
}
void opengl46_renderer::Render_local_shadows()
{
// only the light buffers with the lamps read the maps
auto const *vehicle{Global.gfx_lights_clustered ? m_locallights.cab_lamp_vehicle() : nullptr};
if (false == m_localshadows.update_wanted(vehicle, (vehicle != nullptr ? vehicle->mdKabina : nullptr), m_locallights.cab_lamp_local(), m_framestamp))
return;
glDebug("render lamp shadows");
// the cab drawn by the shadow pass, with the programs of the cube map. the camera is put at the vehicle, which Render_cab()
// places the cab relative to, and the modelview takes the cab model to the space of the map
m_renderpass.draw_mode = rendermode::shadows;
m_renderpass.pass_camera.position() = vehicle->GetPosition();
m_renderpass.draw_stats = {};
OpenGLMatrices.mode(GL_MODELVIEW);
OpenGLMatrices.load_matrix(glm::mat4{glm::translate(glm::dmat4{1.0}, -glm::dvec3{m_localshadows.lamp()}) * glm::inverse(vehicle->mMatrix)});
m_localshadows.begin();
m_cubeshadows = true;
Render_cab(vehicle, 0.0f, false);
m_cubeshadows = false;
m_localshadows.end(static_cast<std::uint32_t>(m_renderpass.draw_stats.drawcalls));
m_renderpass = m_colorpass;
glPolygonMode(GL_FRONT_AND_BACK, Global.bWireFrame ? GL_LINE : GL_FILL);
}
void opengl46_renderer::Update_Clusters(viewport_config &vp, glm::ivec2 const &Targetsize)