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engines/watchmaker/3d/render/opengl_renderer.h

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+/* 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 WATCHMAKER_OPENGL_RENDERER_H
+#define WATCHMAKER_OPENGL_RENDERER_H
+
+
+#include "watchmaker/3d/math/Matrix4x4.h"
+#include "watchmaker/utils.h"
+#include "watchmaker/render.h"
+#include "watchmaker/3d/render/opengl_3d.h"
+
+namespace Watchmaker {
+
+enum class TransformMatrix {
+	PROJECTION,
+	VIEW
+};
+
+enum class RenderState {
+	LIGHT,
+	CLIP,
+	EXTENT,
+	ALPHABLEND,
+	ALPHAREF, // TODO
+	ZENABLE, // TODO
+	ZWRITE_ENABLE, // TODO
+	TEXTUREFACTOR // TODO
+};
+
+enum class BlendFactor {
+	ONE,
+	ZERO,
+	SRCALPHA,
+	INVSRCALPHA,
+	INVSRCCOLOR,
+	SRCCOLOR,
+	DESTCOLOR,
+	INVDESTCOLOR
+};
+
+enum class TextureWrapMode {
+	WRAP,
+	CLAMP
+};
+
+enum class PrimitiveType {
+	LINE,
+	TRIANGLE
+};
+
+Common::SharedPtr<TextureData> createTextureFromSurface(Graphics::Surface &surface, int texFormat);
+Texture *createGLTexture();
+
+class OpenGLRenderer {
+public:
+	void enter2Dmode();
+	void exit2Dmode();
+
+	void pushModelView();
+	void popModelView();
+	void setTransformMatrix(TransformMatrix which, const Matrix4x4 &matrix);
+	// TODO: This should be split.
+	void setRenderState(RenderState state, int value);
+	void setBlendFunc(BlendFactor src, BlendFactor dst);
+	bool error() const {
+		//warning("TODO: Implement error");
+		return false;
+	}
+	Common::String getErrorString() {
+		warning("TODO: Implement getErrorString");
+		return "";
+	}
+	// TODO: This just maps to the D3D way to setting textures
+	void setTexture(int stage, void *texture);
+	void setTexture(int stage, const gTexture &texture);
+	void setTextureWrapMode(int index, TextureWrapMode mode);
+
+	void drawPrimitives(PrimitiveType primitiveType, Vertex *vertices, int numPrimitives);
+	void drawIndexedPrimitivesVBO(PrimitiveType primitiveType, int VBO, int firstVertex, int numVertices, uint16 *faces, uint32 numFaces);
+	void drawIndexedPrimitivesVBO(PrimitiveType primitiveType, Common::SharedPtr<VertexBuffer> VBO, int firstVertex, int numVertices, Common::Array<uint16> faces, uint32 numFaces);
+	void drawIndexedPrimitivesVBO(PrimitiveType primitiveType, gBatchBlock &bb);
+	bool supportsMultiTexturing() const { // TODO
+		return false;
+	}
+};
+
+extern OpenGLRenderer *g_renderer;
+
+} // End of namespace Watchmaker
+
+#endif // WATCHMAKER_OPENGL_RENDERER_H