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Implement support for FSAA in combination with post-processing (#15392)

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- Actually it's MSAA I think, or perhaps the terms are equivalent
- I've made it fit into the existing Irrlicht architecture, but that has resulted in code duplication compared to my original "hacky" approach
- OpenGL 3.2+ and OpenGL ES 3.1+ are supported
- EDT_OPENGL3 is not required, EDT_OPENGL works too
- Helpful tutorial: https://learnopengl.com/Advanced-OpenGL/Anti-Aliasing, section "Off-screen MSAA"
- This may be rough around the edges, but in general it works
This commit is contained in:
grorp 2024-11-18 14:06:48 +01:00 • committed by GitHub
parent a8ea165042
commit 9b6a399011
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GPG key ID: B5690EEEBB952194
23 changed files with 290 additions and 42 deletions
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22
src/client/render/pipeline.cpp
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@ -26,7 +26,7 @@ video::ITexture *TextureBuffer::getTexture(u8 index)
}
void TextureBuffer::setTexture(u8 index, core::dimension2du size, const std::string &name, video::ECOLOR_FORMAT format, bool clear)
void TextureBuffer::setTexture(u8 index, core::dimension2du size, const std::string &name, video::ECOLOR_FORMAT format, bool clear, u8 msaa)
{
assert(index != NO_DEPTH_TEXTURE);
@ -41,9 +41,10 @@ void TextureBuffer::setTexture(u8 index, core::dimension2du size, const std::str
definition.name = name;
definition.format = format;
definition.clear = clear;
definition.msaa = msaa;
}
void TextureBuffer::setTexture(u8 index, v2f scale_factor, const std::string &name, video::ECOLOR_FORMAT format, bool clear)
void TextureBuffer::setTexture(u8 index, v2f scale_factor, const std::string &name, video::ECOLOR_FORMAT format, bool clear, u8 msaa)
{
assert(index != NO_DEPTH_TEXTURE);
@ -58,6 +59,7 @@ void TextureBuffer::setTexture(u8 index, v2f scale_factor, const std::string &na
definition.name = name;
definition.format = format;
definition.clear = clear;
definition.msaa = msaa;
}
void TextureBuffer::reset(PipelineContext &context)
@ -125,13 +127,19 @@ bool TextureBuffer::ensureTexture(video::ITexture **texture, const TextureDefini
if (definition.valid) {
if (definition.clear) {
// We're not able to clear a render target texture
// We're not able to create a normal texture with MSAA
// (could be solved by more refactoring in Irrlicht, but not needed for now)
sanity_check(definition.msaa < 1);
video::IImage *image = m_driver->createImage(definition.format, size);
// Cannot use image->fill because it's not implemented for all formats.
std::memset(image->getData(), 0, image->getDataSizeFromFormat(definition.format, size.Width, size.Height));
*texture = m_driver->addTexture(definition.name.c_str(), image);
image->drop();
}
else {
} else if (definition.msaa > 0) {
*texture = m_driver->addRenderTargetTextureMs(size, definition.msaa, definition.name.c_str(), definition.format);
} else {
*texture = m_driver->addRenderTargetTexture(size, definition.name.c_str(), definition.format);
}
}
@ -189,6 +197,12 @@ void TextureBufferOutput::activate(PipelineContext &context)
RenderTarget::activate(context);
}
video::IRenderTarget *TextureBufferOutput::getIrrRenderTarget(PipelineContext &context)
{
activate(context); // Needed to make sure that render_target is set up.
return render_target;
}
u8 DynamicSource::getTextureCount()
{
assert(isConfigured());