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- /*
- * Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
- *
- * SPDX-License-Identifier: BSD-2-Clause
- */
- #pragma once
- #include "Texture.h"
- #include <AK/Array.h>
- #include <AK/RefCounted.h>
- #include <AK/Vector.h>
- #include <LibGL/GL/gl.h>
- #include <LibGfx/Vector2.h>
- #include <LibGfx/Vector4.h>
- namespace GL {
- class Texture2D final : public Texture {
- public:
- // FIXME: These shouldn't really belong here, they're context specific.
- static constexpr u16 MAX_TEXTURE_SIZE = 2048;
- static constexpr u8 LOG2_MAX_TEXTURE_SIZE = 11;
- class MipMap {
- public:
- MipMap() = default;
- ~MipMap() = default;
- void set_width(GLsizei width) { m_width = width; }
- void set_height(GLsizei height) { m_height = height; }
- GLsizei width() const { return m_width; }
- GLsizei height() const { return m_height; }
- Vector<u32>& pixel_data() { return m_pixel_data; }
- const Vector<u32>& pixel_data() const { return m_pixel_data; }
- private:
- GLsizei m_width;
- GLsizei m_height;
- Vector<u32> m_pixel_data;
- };
- // To quote the Khronos documentation:
- // "You could say that a texture object contains a sampler object, which you access through the texture interface."
- // FIXME: Better name?
- struct TextureSamplerParamaters {
- GLint m_min_filter { GL_NEAREST_MIPMAP_LINEAR };
- GLint m_mag_filter { GL_LINEAR };
- GLint m_wrap_s_mode { GL_REPEAT };
- GLint m_wrap_t_mode { GL_REPEAT };
- };
- public:
- Texture2D() = default;
- ~Texture2D() { }
- virtual bool is_texture_2d() const override { return true; }
- void upload_texture_data(GLenum target, GLint lod, GLint internal_format, GLsizei width, GLsizei height, GLint border, GLenum format, GLenum type, const GLvoid* pixels);
- void replace_sub_texture_data(GLint lod, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height, GLenum format, GLenum type, const GLvoid* data);
- FloatVector4 sample_texel(const FloatVector2& uv) const;
- GLenum internal_format() const { return m_internal_format; }
- private:
- template<typename TCallback>
- void swizzle(Vector<u32>& pixels, TCallback&& callback)
- {
- for (auto& pixel : pixels)
- pixel = callback(pixel);
- }
- private:
- // FIXME: Mipmaps are currently unused, but we have the plumbing for it at least
- Array<MipMap, LOG2_MAX_TEXTURE_SIZE> m_mipmaps;
- GLenum m_internal_format;
- TextureSamplerParamaters m_sampler_params;
- };
- }
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