Initial commit

engines/alcachofa/graphics-opengl.h

@@ -0,0 +1,68 @@
+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#ifndef ALCACHOFA_GRAPHICS_OPENGL_H
+#define ALCACHOFA_GRAPHICS_OPENGL_H
+
+#include "alcachofa/graphics-opengl-base.h"
+
+#include "graphics/managed_surface.h"
+#include "graphics/opengl/system_headers.h"
+#include "graphics/opengl/debug.h"
+
+namespace Alcachofa {
+
+class OpenGLTexture : public ITexture {
+public:
+	OpenGLTexture(int32 w, int32 h, bool withMipmaps);
+	~OpenGLTexture() override;
+
+	inline GLuint handle() const { return _handle; }
+	void setMirrorWrap(bool wrap);
+	void update(const Graphics::Surface &surface) override;
+
+protected:
+	bool _withMipmaps;
+	bool _mirrorWrap = true;
+	GLuint _handle = 0;
+};
+
+class OpenGLRenderer : public OpenGLRendererBase {
+public:
+	OpenGLRenderer(Common::Point resolution);
+
+	Common::ScopedPtr<ITexture> createTexture(int32 w, int32 h, bool withMipmaps) override;
+	Graphics::PixelFormat getPixelFormat() const override;
+	bool requiresPoTTextures() const override;
+	void end() override;
+	void setOutput(Graphics::Surface &output) override;
+
+protected:
+	void setViewportInner(int x, int y, int width, int height) override;
+	void setBlendFunc(BlendMode blendMode); ///< just the blend-func, not texenv/shader uniform
+	void checkFirstDrawCommand();
+
+	OpenGLTexture *_currentTexture = nullptr;
+};
+
+}
+
+#endif // ALCACHOFA_GRAPHICS_OPENGL_H