1 files changed, 72 insertions, 0 deletions
diff --git a/gfx/gl/glTexture.h b/gfx/gl/glTexture.h
new file mode 100644
index 0000000..3472c4a
--- /dev/null
+++ b/gfx/gl/glTexture.h
@@ -0,0 +1,72 @@
+#pragma once
+
+#include "glArrays.h"
+#include "gl_traits.h"
+
+namespace Impl {
+	template<GLenum> struct TextureTargetTraits;
+
+	template<GLenum Target> struct TextureTargetTraitsCommon {
+		static void
+		create(GLsizei count, GLuint * textures)
+		{
+			glCreateTextures(Target, count, textures);
+		}
+	};
+
+	template<> struct TextureTargetTraits<GL_TEXTURE_2D> : TextureTargetTraitsCommon<GL_TEXTURE_2D> {
+		constexpr static glm::length_t dims = 2;
+	};
+
+	template<> struct TextureTargetTraits<GL_TEXTURE_2D_ARRAY> : TextureTargetTraitsCommon<GL_TEXTURE_2D_ARRAY> {
+		constexpr static glm::length_t dims = 3;
+	};
+
+	template<> struct TextureTargetTraits<GL_TEXTURE_RECTANGLE> : TextureTargetTraitsCommon<GL_TEXTURE_RECTANGLE> {
+		constexpr static glm::length_t dims = 2;
+	};
+
+	struct glTextureBase : Detail::glNamed {
+		void bind(GLuint unit) const;
+		void generateMipmap();
+
+		template<has_glTextureParameter T>
+		void
+		parameter(GLenum pname, T param)
+		{
+			(*gl_traits<T>::glTextureParameterFunc)(name, pname, param);
+		}
+
+		template<glm::length_t L, has_glTextureParameterv T, glm::qualifier Q>
+		void
+		parameter(GLenum pname, const glm::vec<L, T, Q> & param)
+		{
+			(*gl_traits<T>::glTextureParametervFunc)(name, pname, glm::value_ptr(param));
+		}
+	};
+
+	template<glm::length_t Dims>
+		requires(Dims >= 1 && Dims <= 3)
+	struct glTextureDims : glTextureBase {
+		[[nodiscard]] glm::vec<Dims, GLsizei> getSize() const;
+		void storage(GLsizei levels, GLenum internalformat, glm::vec<Dims, GLsizei> dims);
+		void image(GLenum format, GLenum type, const void * pixels);
+		void image(glm::vec<Dims, GLint> size, GLenum format, GLenum type, const void * pixels);
+		void subImage(glm::vec<Dims, GLint> offset, glm::vec<Dims, GLint> size, GLenum format, GLenum type,
+				const void * pixels);
+
+		void saveColour(const char * path) const;
+		void saveDepth(const char * path) const;
+		void saveNormal(const char * path) const;
+		void savePosition(const char * path) const;
+	};
+
+	template<GLenum Target> struct glTexture : glTextureDims<TextureTargetTraits<Target>::dims> { };
+}
+
+template<GLenum Target, size_t N>
+using glTextures
+		= glManagedArray<Impl::glTexture<Target>, N, &Impl::TextureTargetTraits<Target>::create, &glDeleteTextures>;
+template<GLenum Target>
+using glTexture
+		= glManagedSingle<Impl::glTexture<Target>, &Impl::TextureTargetTraits<Target>::create, &glDeleteTextures>;