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