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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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19
Userland/Libraries/LibGL/Tex/Texture2D.h
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@ -10,10 +10,8 @@
#include "Texture.h"
#include <AK/Array.h>
#include <AK/IntegralMath.h>
#include <LibGL/GL/gl.h>
#include <LibGL/Tex/MipMap.h>
#include <LibGL/Tex/Sampler2D.h>
#include <LibGPU/ImageDataLayout.h>
@ -31,24 +29,17 @@ public:
void upload_texture_data(GLuint lod, GLenum internal_format, GPU::ImageDataLayout input_layout, GLvoid const* pixels);
void replace_sub_texture_data(GLuint lod, GPU::ImageDataLayout input_layout, Vector3<i32> const& output_offset, GLvoid const* pixels);
MipMap const& mipmap(unsigned lod) const
{
if (lod >= m_mipmaps.size())
return m_mipmaps.last();
return m_mipmaps.at(lod);
}
void set_generate_mipmaps(bool generate_mipmaps);
GLenum internal_format() const { return m_internal_format; }
Sampler2D const& sampler() const { return m_sampler; }
Sampler2D& sampler() { return m_sampler; }
int width_at_lod(unsigned level) const { return (level >= m_mipmaps.size()) ? 0 : m_mipmaps.at(level).width(); }
int height_at_lod(unsigned level) const { return (level >= m_mipmaps.size()) ? 0 : m_mipmaps.at(level).height(); }
int width_at_lod(unsigned level) const { return static_cast<int>(device_image()->width_at_level(level)); }
int height_at_lod(unsigned level) const { return static_cast<int>(device_image()->height_at_level(level)); }
int depth_at_lod(unsigned level) const { return static_cast<int>(device_image()->depth_at_level(level)); }
private:
// FIXME: Mipmaps are currently unused, but we have the plumbing for it at least
Array<MipMap, LOG2_MAX_TEXTURE_SIZE> m_mipmaps;
bool m_generate_mipmaps { false };
GLenum m_internal_format;
Sampler2D m_sampler;
};