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Code Issues 155 Wiki Activity

Cull the instances of the shadow maps of headlights and lamps on the GPU

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Hirek
2026-10-18 23:14:08 +02:00
parent 64dedb9d53
commit ffe77be754
8 changed files with 144 additions and 13 deletions
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22
rendering/opengl46/opengl46localshadows.cpp
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@@ -122,6 +122,24 @@ void opengl46_local_shadows::init()
}
glProgramUniform1f(*m_program, NEAR_LOCATION, SHADOW_NEAR);
glProgramUniform1f(*m_alpha_program, NEAR_LOCATION, SHADOW_NEAR);
// the variants for the multi draws of the instances drawn from the gpu culling (the scenery parts of the maps of lamps); the
// fragment stages read nothing of the model block
try
{
gl::shader multidrawvertex("shadowcube.vert", "#define MODEL_DRAWS 1\n");
gl::shader fragment("shadowmap.frag");
gl::shader alphafragment("alphashadowmap.frag");
m_multidraw_program = std::make_unique<gl::program>(std::vector<std::reference_wrapper<const gl::shader>>{multidrawvertex, geometry, fragment});
m_alpha_multidraw_program = std::make_unique<gl::program>(std::vector<std::reference_wrapper<const gl::shader>>{multidrawvertex, geometry, alphafragment});
glProgramUniform1f(*m_multidraw_program, NEAR_LOCATION, SHADOW_NEAR);
glProgramUniform1f(*m_alpha_multidraw_program, NEAR_LOCATION, SHADOW_NEAR);
}
catch (gl::shader_exception const &e)
{
ErrorLog("multi draws of the lamp shadow maps not available: " + std::string(e.what()));
m_multidraw_program.reset();
m_alpha_multidraw_program.reset();
}
set_layer(CAB_SLOT * 6);
// a shadow sampler with no depth texture to read from is undefined, also where the shading doesn't read it
@@ -143,6 +161,10 @@ void opengl46_local_shadows::set_layer(int const Layer)
{
glProgramUniform1i(*m_program, LAYER_LOCATION, Layer);
glProgramUniform1i(*m_alpha_program, LAYER_LOCATION, Layer);
if (m_multidraw_program)
glProgramUniform1i(*m_multidraw_program, LAYER_LOCATION, Layer);
if (m_alpha_multidraw_program)
glProgramUniform1i(*m_alpha_multidraw_program, LAYER_LOCATION, Layer);
}
opengl46_local_shadows::level_setup opengl46_local_shadows::setup(int const Level)