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Code Issues 156 Wiki Activity

Let the instances drawn from the GPU hide one another, in two phases

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This commit is contained in:
Hirek
2026-10-17 21:50:23 +02:00
parent 918c056b83
commit 5a5c67aaaf
14 changed files with 367 additions and 129 deletions
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17
rendering/opengl46/opengl46hiz.cpp
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@@ -70,14 +70,15 @@ void opengl46_hiz::allocate(int const Width, int const Height)
glTextureParameteri(m_pyramid, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
}
void opengl46_hiz::build(GLuint const Source, int const Width, int const Height)
void opengl46_hiz::build(GLuint const Source, int const Width, int const Height, bool const Second)
{
if ((Width <= 0) || (Height <= 0))
return;
if (m_sourcesize != glm::ivec2{Width, Height})
allocate(Width, Height);
m_timer.begin();
auto &timer{Second ? m_secondtimer : m_timer};
timer.begin();
// resolve of the multisampled depth; the scissor test would limit the blit
auto const scissor{glIsEnabled(GL_SCISSOR_TEST) == GL_TRUE};
@@ -107,13 +108,19 @@ void opengl46_hiz::build(GLuint const Source, int const Width, int const Height)
glBindTextureUnit(0, 0);
opengl_texture::reset_unit_cache();
m_timer.end();
timer.end();
}
std::string opengl46_hiz::info_times()
std::string opengl46_hiz::info_times(bool const Second)
{
std::string text;
if (auto const time = m_timer.result())
text += " occlusion depth: " + to_string(static_cast<double>(*time) / 1000000.0, 3) + " ms\n";
{
text += " occlusion depth: " + to_string(static_cast<double>(*time) / 1000000.0, 3) + " ms";
auto const second{m_secondtimer.result()};
if (Second && second)
text += " (+" + to_string(static_cast<double>(*second) / 1000000.0, 3) + " ms with the instances drawn first)";
text += "\n";
}
return text;
}