LibGL: Introduce Texture base class for all texture types

7 files changed, 101 insertions, 74 deletions

diff --git a/Userland/Libraries/LibGL/CMakeLists.txt b/Userland/Libraries/LibGL/CMakeLists.txt
index fb377b04da..1814b6a328 100644
--- a/Userland/Libraries/LibGL/CMakeLists.txt
+++ b/Userland/Libraries/LibGL/CMakeLists.txt
@@ -1,6 +1,6 @@
 set(SOURCES
     Tex/NameAllocator.cpp
-    Tex/Texture.cpp
+    Tex/Texture2D.cpp
     Clipper.cpp
     GLBlend.cpp
     GLColor.cpp
diff --git a/Userland/Libraries/LibGL/SoftwareGLContext.cpp b/Userland/Libraries/LibGL/SoftwareGLContext.cpp
index 420292aaf1..96a54ee4b1 100644
--- a/Userland/Libraries/LibGL/SoftwareGLContext.cpp
+++ b/Userland/Libraries/LibGL/SoftwareGLContext.cpp
@@ -313,7 +313,7 @@ void SoftwareGLContext::gl_end()
         }
 
         // FIXME: Change this when we have texture units/multi-texturing
-        m_rasterizer.submit_triangle(triangle, *m_allocated_textures.find(1)->value);
+        m_rasterizer.submit_triangle(triangle, *static_ptr_cast<Texture2D>(m_allocated_textures.find(1)->value));
     }
 
     triangle_list.clear();
@@ -667,7 +667,7 @@ void SoftwareGLContext::gl_gen_textures(GLsizei n, GLuint* textures)
     for (auto i = 0; i < n; i++) {
         GLuint name = textures[i];
 
-        m_allocated_textures.set(name, adopt_ref(*new Texture()));
+        m_allocated_textures.set(name, adopt_ref(*new Texture2D()));
     }
 }
 
@@ -696,14 +696,14 @@ void SoftwareGLContext::gl_tex_image_2d(GLenum target, GLint level, GLint intern
     // We only support symbolic constants for now
     RETURN_WITH_ERROR_IF(!(internal_format == GL_RGB || internal_format == GL_RGBA), GL_INVALID_ENUM);
     RETURN_WITH_ERROR_IF(type != GL_UNSIGNED_BYTE, GL_INVALID_VALUE);
-    RETURN_WITH_ERROR_IF(level < 0 || level > Texture::LOG2_MAX_TEXTURE_SIZE, GL_INVALID_VALUE);
-    RETURN_WITH_ERROR_IF(width < 0 || height < 0 || width > (2 + Texture::MAX_TEXTURE_SIZE) || height > (2 + Texture::MAX_TEXTURE_SIZE), GL_INVALID_VALUE);
+    RETURN_WITH_ERROR_IF(level < 0 || level > Texture2D::LOG2_MAX_TEXTURE_SIZE, GL_INVALID_VALUE);
+    RETURN_WITH_ERROR_IF(width < 0 || height < 0 || width > (2 + Texture2D::MAX_TEXTURE_SIZE) || height > (2 + Texture2D::MAX_TEXTURE_SIZE), GL_INVALID_VALUE);
     RETURN_WITH_ERROR_IF((width & 2) != 0 || (height & 2) != 0, GL_INVALID_VALUE);
     RETURN_WITH_ERROR_IF(border < 0 || border > 1, GL_INVALID_VALUE);
 
     // TODO: Load texture from the currently active texture unit
     // This is to test the functionality of texture data upload
-    m_allocated_textures.find(1)->value->upload_texture_data(target, level, internal_format, width, height, border, format, type, data);
+    static_ptr_cast<Texture2D>(m_allocated_textures.find(1)->value)->upload_texture_data(target, level, internal_format, width, height, border, format, type, data);
 }
 
 void SoftwareGLContext::gl_front_face(GLenum face)
diff --git a/Userland/Libraries/LibGL/SoftwareRasterizer.cpp b/Userland/Libraries/LibGL/SoftwareRasterizer.cpp
index ac6912ee1d..3f13938288 100644
--- a/Userland/Libraries/LibGL/SoftwareRasterizer.cpp
+++ b/Userland/Libraries/LibGL/SoftwareRasterizer.cpp
@@ -414,7 +414,7 @@ SoftwareRasterizer::SoftwareRasterizer(const Gfx::IntSize& min_size)
 {
 }
 
-void SoftwareRasterizer::submit_triangle(const GLTriangle& triangle, const Texture& texture)
+void SoftwareRasterizer::submit_triangle(const GLTriangle& triangle, const Texture2D& texture)
 {
     rasterize_triangle(m_options, *m_render_target, *m_depth_buffer, triangle, [&texture](const FloatVector2& uv, const FloatVector4& color) -> FloatVector4 {
         // TODO: We'd do some kind of multitexturing/blending here
diff --git a/Userland/Libraries/LibGL/SoftwareRasterizer.h b/Userland/Libraries/LibGL/SoftwareRasterizer.h
index 5bac4b7354..717fefdc41 100644
--- a/Userland/Libraries/LibGL/SoftwareRasterizer.h
+++ b/Userland/Libraries/LibGL/SoftwareRasterizer.h
@@ -9,7 +9,7 @@
 #include "DepthBuffer.h"
 #include "GL/gl.h"
 #include "GLStruct.h"
-#include "Tex/Texture.h"
+#include "Tex/Texture2D.h"
 #include <AK/OwnPtr.h>
 #include <LibGfx/Bitmap.h>
 #include <LibGfx/Vector4.h>
@@ -31,7 +31,7 @@ class SoftwareRasterizer final {
 public:
     SoftwareRasterizer(const Gfx::IntSize& min_size);
 
-    void submit_triangle(const GLTriangle& triangle, const Texture& texture);
+    void submit_triangle(const GLTriangle& triangle, const Texture2D& texture);
     void resize(const Gfx::IntSize& min_size);
     void clear_color(const FloatVector4&);
     void clear_depth(float);
diff --git a/Userland/Libraries/LibGL/Tex/Texture.h b/Userland/Libraries/LibGL/Tex/Texture.h
index bb42429089..d3f9ddfc2a 100644
--- a/Userland/Libraries/LibGL/Tex/Texture.h
+++ b/Userland/Libraries/LibGL/Tex/Texture.h
@@ -1,78 +1,23 @@
 /*
- * Copyright (c) 2021, Jesse Buhagiar <jooster669@gmail.com>
+ * Copyright (c) 2021, Stephan Unverwerth <s.unverwerth@serenityos.org>
  *
  * SPDX-License-Identifier: BSD-2-Clause
  */
 
 #pragma once
 
-#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 Texture final : public RefCounted<Texture> {
+class Texture : public RefCounted<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;
+    virtual ~Texture() { }
 
-    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:
-    Texture() = default;
-    ~Texture() { }
-
-    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;
+    virtual bool is_texture_1d() const { return false; }
+    virtual bool is_texture_2d() const { return false; }
+    virtual bool is_texture_3d() const { return false; }
+    virtual bool is_cube_map() const { return false; }
 };
 
 }
diff --git a/Userland/Libraries/LibGL/Tex/Texture.cpp b/Userland/Libraries/LibGL/Tex/Texture2D.cpp
index 76324a7ea3..3e684e7ebd 100644
--- a/Userland/Libraries/LibGL/Tex/Texture.cpp
+++ b/Userland/Libraries/LibGL/Tex/Texture2D.cpp
@@ -6,12 +6,12 @@
 
 #include <AK/Format.h>
 #include <LibGL/GL/gl.h>
-#include <LibGL/Tex/Texture.h>
+#include <LibGL/Tex/Texture2D.h>
 #include <string.h>
 
 namespace GL {
 
-void Texture::upload_texture_data(GLenum, GLint lod, GLint internal_format, GLsizei width, GLsizei height, GLint, GLenum format, GLenum, const GLvoid* pixels)
+void Texture2D::upload_texture_data(GLenum, GLint lod, GLint internal_format, GLsizei width, GLsizei height, GLint, GLenum format, GLenum, const GLvoid* 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
@@ -112,7 +112,7 @@ void Texture::upload_texture_data(GLenum, GLint lod, GLint internal_format, GLsi
     mip.set_height(height);
 }
 
-FloatVector4 Texture::sample_texel(const FloatVector2& uv) const
+FloatVector4 Texture2D::sample_texel(const FloatVector2& uv) const
 {
     auto& mip = m_mipmaps.at(0);
 
diff --git a/Userland/Libraries/LibGL/Tex/Texture2D.h b/Userland/Libraries/LibGL/Tex/Texture2D.h
new file mode 100644
index 0000000000..82ed949446
--- /dev/null
+++ b/Userland/Libraries/LibGL/Tex/Texture2D.h
@@ -0,0 +1,82 @@
+/*
+ * 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;
+};
+
+}