- Finished Buffer Object Implementation

- Implemented Vertex Array Object - Began Texture Implementation
2025-08-03 13:49:33 -04:00
parent 9dc9ed4ed1
commit ff4d6efedc
5 changed files with 236 additions and 11 deletions
--- a/include/fennec/renderers/opengl/lib/texture.h
+++ b/include/fennec/renderers/opengl/lib/texture.h
@@ -0,0 +1,86 @@
+// =====================================================================================================================
+//  fennec, a free and open source game engine
+//  Copyright © 2025  Medusa Slockbower
+//
+//  This program is free software: you can redistribute it and/or modify
+//  it under the terms of the GNU General Public License as published by
+//  the Free Software Foundation, either version 3 of the License, or
+//  (at your option) any later version.
+//
+//  This program is distributed in the hope that it will be useful,
+//  but WITHOUT ANY WARRANTY; without even the implied warranty of
+//  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+//  GNU General Public License for more details.
+//
+//  You should have received a copy of the GNU General Public License
+//  along with this program.  If not, see <https://www.gnu.org/licenses/>.
+// =====================================================================================================================
+
+#ifndef FENNEC_RENDERERS_OPENGL_LIB_TEXTURE_H
+#define FENNEC_RENDERERS_OPENGL_LIB_TEXTURE_H
+
+#include <fennec/renderers/opengl/lib/fwd.h>
+#include <fennec/renderers/opengl/lib/enum.h>
+
+namespace fennec
+{
+
+namespace gl
+{
+
+template<GLenum TypeV, GLint FormatV, GLboolean ImmutableV>
+class texture {
+public:
+	static constexpr GLenum type        = TypeV;
+	static constexpr GLint  format      = FormatV;
+	static constexpr bool   immutable   = ImmutableV;
+	static constexpr bool   sampled     = TypeV == TEX_2D_MS or TypeV == TEX_2D_MS_V;
+	static constexpr bool   is_rect     = TypeV == TEX_RECT;
+	static constexpr bool   is_buffered = TypeV == TEX_BUFFER;
+	static constexpr bool   is_2d       = sampled or is_rect or TypeV == TEX_2D or TypeV == TEX_2D_V;
+	static constexpr bool   is_1d       = TypeV == TEX_1D    or TypeV == TEX_1D_V;
+	static constexpr bool   is_array    = TypeV == TEX_1D_V or TypeV == TEX_2D_V or TypeV == TEX_2D_MS_V or TypeV == TEX_CUBEMAP_V;
+	static constexpr bool   has_mipmaps = not(sampled or is_rect or is_buffered);
+
+	texture(GLsizei width, GLint mips, void* data) requires is_1d and not is_array
+		: _handle(NULL)
+		, _width(width), _height(1), _depth(1)
+		, _samples(1)
+		, _mips(mips) {
+		glGenTextures(1, &_handle);
+	}
+
+	texture(GLsizei width, GLsizei height, GLint mips) requires is_2d and not (is_array or sampled) or (is_1d and is_array)
+		: _handle(NULL)
+		, _width(width), _height(height), _depth(1)
+		, _samples(1)
+		, _mips(mips) {
+	}
+
+	void start() {
+		glBindTexture(type, _handle);
+	}
+
+	void end() {
+		glBindTexture(type, NULL);
+	}
+
+	void bind(GLint i) {
+		glActiveTexture(GL_TEXTURE0 + i);
+		start();
+	}
+
+private:
+	GLuint  _handle;
+	GLsizei _width;
+	GLsizei _height;
+	GLsizei _depth;
+	GLsizei _samples;
+	GLint   _mips;
+};
+
+}
+
+}
+
+#endif // FENNEC_RENDERERS_OPENGL_TEXTURE_H