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mirror of https://github.com/MaSzyna-EU07/maszyna.git synced 2026-10-28 20:27:28 +01:00
Code Issues 154 Wiki Activity

feat(render): ground truth ambient occlusion darkens creases, recesses and the space under desks and frames, computed at half resolution from the reversed depth buffer with a depth-aware blur and multiplied into the image before motion blur, so it works with the default settings; thin parts in front of a surface, such as a steering wheel, shade it only from close by, and gfx.postfx.gtao.enabled, radius, intensity, directions and steps set it from the ini

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maj00r
2026-10-14 16:56:38 +02:00
parent 000b8656cc
commit a24f9fae3f
9 changed files with 271 additions and 9 deletions
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69
rendering/opengl33renderer.cpp
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@@ -214,6 +214,13 @@ bool opengl33_renderer::Init(GLFWwindow *Window)
m_pfx_ssao_blur = std::make_unique<gl::postfx>("ssao_blur");
m_pfx_ssao_apply = std::make_unique<gl::postfx>("ssao_apply");
if (Global.gfx_postfx_gtao_enabled)
{
m_pfx_gtao = std::make_unique<gl::postfx>("gtao");
m_pfx_gtao_blur = std::make_unique<gl::postfx>("gtao_blur");
m_pfx_gtao_apply = std::make_unique<gl::postfx>("gtao_apply");
}
// Generate hemisphere kernel (z > 0 = toward surface normal)
std::uniform_real_distribution<float> rnd(0.0f, 1.0f);
std::default_random_engine gen(42); // NOSONAR fixed seed on purpose, SSAO kernel has to be identical every run
@@ -503,7 +510,7 @@ bool opengl33_renderer::init_viewport(viewport_config &vp)
vp.msaa_fb->attach(*vp.msaa_rbc, GL_COLOR_ATTACHMENT0);
vp.msaa_fb->attach(*vp.msaa_rbd, GL_DEPTH_ATTACHMENT);
if (Global.gfx_postfx_chromaticaberration_enabled || Global.gfx_postfx_motionblur_enabled || Global.gfx_postfx_ssao_enabled)
if (Global.gfx_postfx_chromaticaberration_enabled || Global.gfx_postfx_motionblur_enabled || Global.gfx_postfx_ssao_enabled || Global.gfx_postfx_gtao_enabled)
{
vp.main_tex = std::make_unique<opengl_texture>();
vp.main_tex->alloc_rendertarget(Global.gfx_format_color, GL_RGB, vp.width, vp.height, 1, 1, GL_CLAMP_TO_EDGE);
@@ -566,6 +573,24 @@ bool opengl33_renderer::init_viewport(viewport_config &vp)
if (!vp.ssao_blur_fb->is_complete()) { ErrorLog("ssao blur framebuffer setup failed"); return false; }
}
if (Global.gfx_postfx_gtao_enabled)
{
int gtao_w = std::max(1, vp.width / 2);
int gtao_h = std::max(1, vp.height / 2);
vp.gtao_tex = std::make_unique<opengl_texture>();
vp.gtao_tex->alloc_rendertarget(GL_R8, GL_RED, gtao_w, gtao_h, 1, 1, GL_CLAMP_TO_EDGE);
vp.gtao_fb = std::make_unique<gl::framebuffer>();
vp.gtao_fb->attach(*vp.gtao_tex, GL_COLOR_ATTACHMENT0);
if (!vp.gtao_fb->is_complete()) { ErrorLog("gtao framebuffer setup failed"); return false; }
vp.gtao_blur_tex = std::make_unique<opengl_texture>();
vp.gtao_blur_tex->alloc_rendertarget(GL_R8, GL_RED, gtao_w, gtao_h, 1, 1, GL_CLAMP_TO_EDGE);
vp.gtao_blur_fb = std::make_unique<gl::framebuffer>();
vp.gtao_blur_fb->attach(*vp.gtao_blur_tex, GL_COLOR_ATTACHMENT0);
if (!vp.gtao_blur_fb->is_complete()) { ErrorLog("gtao blur framebuffer setup failed"); return false; }
}
if (!vp.main2_fb->is_complete())
return false;
}
@@ -1042,12 +1067,8 @@ if (!Global.gfx_skippipeline)
vp.msaa_fb->blit_to(vp.main_fb.get(), vp.width, vp.height, GL_COLOR_BUFFER_BIT, GL_COLOR_ATTACHMENT0);
vp.msaa_fb->blit_to(vp.main_fb.get(), vp.width, vp.height, GL_COLOR_BUFFER_BIT, GL_COLOR_ATTACHMENT1);
vp.msaa_fb->blit_to(vp.main_fb.get(), vp.width, vp.height, GL_DEPTH_BUFFER_BIT, GL_DEPTH_ATTACHMENT);
model_ubs.param[0].x = m_framerate / (1.0 / Global.gfx_postfx_motionblur_shutter);
model_ubo->update(model_ubs);
m_pfx_motionblur->apply({vp.main_tex.get(), vp.main_texv.get(), vp.main_texd.get()}, vp.main2_fb.get());
}
else if (Global.gfx_postfx_ssao_enabled)
else if (Global.gfx_postfx_ssao_enabled || Global.gfx_postfx_gtao_enabled)
{
// resolve color+depth so SSAO can sample the depth texture
vp.main_fb->clear(GL_COLOR_BUFFER_BIT);
@@ -1061,6 +1082,42 @@ if (!Global.gfx_skippipeline)
vp.msaa_fb->blit_to(vp.main2_fb.get(), vp.width, vp.height, GL_COLOR_BUFFER_BIT, GL_COLOR_ATTACHMENT0);
}
if (Global.gfx_postfx_gtao_enabled)
{
int gtao_w = std::max(1, vp.width / 2);
int gtao_h = std::max(1, vp.height / 2);
bool const blend { glIsEnabled(GL_BLEND) == GL_TRUE };
glDisable(GL_BLEND);
model_ubs.param[0] = glm::vec4(Global.gfx_postfx_gtao_radius, Global.gfx_postfx_gtao_intensity, static_cast<float>(Global.gfx_postfx_gtao_directions), static_cast<float>(Global.gfx_postfx_gtao_steps));
model_ubs.param[1] = glm::vec4((GLAD_GL_ARB_clip_control || GLAD_GL_EXT_clip_control) ? 1.f : 0.f, 1000.f, 0.f, 0.f);
model_ubo->update(model_ubs);
glViewport(0, 0, gtao_w, gtao_h);
m_pfx_gtao->apply({ vp.main_texd.get() }, vp.gtao_fb.get());
m_pfx_gtao_blur->apply({ vp.gtao_tex.get(), vp.main_texd.get() }, vp.gtao_blur_fb.get());
glViewport(0, 0, vp.width, vp.height);
vp.main_fb->setup_drawing(1);
glEnable(GL_BLEND);
glBlendFunc(GL_ZERO, GL_SRC_COLOR);
m_pfx_gtao_apply->apply({ vp.gtao_blur_tex.get() }, vp.main_fb.get(), false);
glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
if (!blend)
glDisable(GL_BLEND);
}
if (Global.gfx_postfx_motionblur_enabled)
{
model_ubs.param[0].x = m_framerate / (1.0 / Global.gfx_postfx_motionblur_shutter);
model_ubo->update(model_ubs);
m_pfx_motionblur->apply({vp.main_tex.get(), vp.main_texv.get(), vp.main_texd.get()}, vp.main2_fb.get());
}
else if (Global.gfx_postfx_gtao_enabled && !Global.gfx_postfx_ssao_enabled)
{
vp.main2_fb->clear(GL_COLOR_BUFFER_BIT);
vp.main_fb->blit_to(vp.main2_fb.get(), vp.width, vp.height, GL_COLOR_BUFFER_BIT, GL_COLOR_ATTACHMENT0);
}
// SSAO: depth -> occlusion -> blur -> modulate color into main2_fb
if (Global.gfx_postfx_ssao_enabled && !Global.gfx_postfx_motionblur_enabled)
{