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LibGL+LibGPU+LibSoftGPU: Implement GL_GENERATE_MIPMAP

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We can now generate texture mipmaps on the fly if the client requests
it. This fixes the missing textures in our PrBoom+ port.
This commit is contained in:
Jelle Raaijmakers 2022-09-04 22:18:16 +02:00 • committed by Linus Groh
parent dda5987684
commit 1540c56e6c
10 changed files with 148 additions and 82 deletions
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22
Userland/Libraries/LibGL/Tex/Texture2D.cpp
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@ -19,20 +19,15 @@ void Texture2D::download_texture_data(GLuint lod, GPU::ImageDataLayout output_la
void Texture2D::upload_texture_data(GLuint lod, GLenum internal_format, GPU::ImageDataLayout input_layout, GLvoid const* pixels)
{
// NOTE: Some target, format, and internal formats are currently unsupported.
// Considering we control this library, and `gl.h` itself, we don't need to add any
// checks here to see if we support them; the program will simply fail to compile..
auto& mip = m_mipmaps[lod];
m_internal_format = internal_format;
mip.set_width(input_layout.selection.width);
mip.set_height(input_layout.selection.height);
// No pixel data was supplied; leave the texture memory uninitialized.
if (pixels == nullptr)
return;
replace_sub_texture_data(lod, input_layout, { 0, 0, 0 }, pixels);
if (lod == 0 && m_generate_mipmaps)
device_image()->regenerate_mipmaps();
}
void Texture2D::replace_sub_texture_data(GLuint lod, GPU::ImageDataLayout input_layout, Vector3<i32> const& output_offset, GLvoid const* pixels)
@ -42,7 +37,18 @@ void Texture2D::replace_sub_texture_data(GLuint lod, GPU::ImageDataLayout input_
// once used for rendering for the first time.
VERIFY(!device_image().is_null());
device_image()->write_texels(0, lod, output_offset, pixels, input_layout);
device_image()->write_texels(lod, output_offset, pixels, input_layout);
if (lod == 0 && m_generate_mipmaps)
device_image()->regenerate_mipmaps();
}
void Texture2D::set_generate_mipmaps(bool generate_mipmaps)
{
if (m_generate_mipmaps == generate_mipmaps)
return;
m_generate_mipmaps = generate_mipmaps;
if (generate_mipmaps && !device_image().is_null())
device_image()->regenerate_mipmaps();
}
}