Initial commit

src/quadarray.h

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+/*
+** quadarray.h
+**
+** This file is part of mkxp.
+**
+** Copyright (C) 2013 Jonas Kulla <Nyocurio@gmail.com>
+**
+** mkxp 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 2 of the License, or
+** (at your option) any later version.
+**
+** mkxp 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 mkxp.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef QUADARRAY_H
+#define QUADARRAY_H
+
+#include <QtGlobal>
+#include "gl-util.h"
+#include "globalstate.h"
+#include "global-ibo.h"
+
+typedef quint32 index_t;
+#define _GL_INDEX_TYPE GL_UNSIGNED_INT
+
+struct ColorQuadArray
+{
+	QVector<Vertex> vertices;
+
+	VBO::ID vbo;
+	VAO::ID vao;
+
+	int quadCount;
+
+	ColorQuadArray()
+	    : quadCount(0)
+	{
+		vbo = VBO::gen();
+		vao = VAO::gen();
+
+		VAO::bind(vao);
+		VBO::bind(vbo);
+		gState->bindQuadIBO();
+
+		glEnableClientState(GL_VERTEX_ARRAY);
+		glEnableClientState(GL_TEXTURE_COORD_ARRAY);
+		glEnableClientState(GL_COLOR_ARRAY);
+
+		glVertexPointer  (2, GL_FLOAT, sizeof(Vertex), Vertex::posOffset());
+		glTexCoordPointer(2, GL_FLOAT, sizeof(Vertex), Vertex::texPosOffset());
+		glColorPointer   (4, GL_FLOAT, sizeof(Vertex), Vertex::colorOffset());
+
+		VAO::unbind();
+		IBO::unbind();
+		VBO::unbind();
+	}
+
+	~ColorQuadArray()
+	{
+		VBO::del(vbo);
+		VAO::del(vao);
+	}
+
+	void resize(int size)
+	{
+		vertices.resize(size * 4);
+		quadCount = size;
+	}
+
+	/* This needs to be called after the final 'append()' call
+	 * and previous to the first 'draw()' call. */
+	void commit()
+	{
+		VBO::bind(vbo);
+		VBO::uploadData(vertices.size() * sizeof(Vertex), vertices.constData(), GL_DYNAMIC_DRAW);
+		VBO::unbind();
+
+		gState->ensureQuadIBO(quadCount);
+	}
+
+	void draw(uint offset, uint count)
+	{
+		VAO::bind(vao);
+
+		const char *_offset = (const char*) 0 + offset * 6 * sizeof(index_t);
+		glDrawElements(GL_TRIANGLES, count * 6, _GL_INDEX_TYPE, _offset);
+
+		VAO::unbind();
+	}
+
+	void draw()
+	{
+		draw(0, quadCount);
+	}
+
+	int count() const
+	{
+		return quadCount;
+	}
+};
+
+struct PointArray
+{
+	QVector<Vertex> vertices;
+	VBO::ID vbo;
+	VAO::ID vao;
+
+	PointArray()
+	{
+		vbo = VBO::gen();
+		vao = VAO::gen();
+
+		VAO::bind(vao);
+		VBO::bind(vbo);
+
+		glEnableClientState(GL_VERTEX_ARRAY);
+		glEnableClientState(GL_COLOR_ARRAY);
+		glDisableClientState(GL_TEXTURE_COORD_ARRAY);
+
+		glVertexPointer(2, GL_FLOAT, sizeof(Vertex), (const GLvoid*) 0);
+		glColorPointer (4, GL_FLOAT, sizeof(Vertex), (const GLvoid*) sizeof(SVertex));
+
+		VAO::unbind();
+		VBO::unbind();
+	}
+
+	~PointArray()
+	{
+		VBO::del(vbo);
+		VAO::del(vao);
+	}
+
+	void append(const Vec2 &pos, const Vec4 &color)
+	{
+		Vertex vert;
+		vert.pos = pos;
+		vert.color = color;
+		vertices.append(vert);
+	}
+
+	void commit()
+	{
+		VBO::bind(vbo);
+		VBO::uploadData(vertices.size() * sizeof(Vertex), vertices.constData());
+		VBO::unbind();
+	}
+
+	void reset()
+	{
+		vertices.clear();
+	}
+
+	void draw()
+	{
+		VAO::bind(vao);
+		glDrawArrays(GL_POINTS, 0, count());
+		VAO::unbind();
+	}
+
+	int count()
+	{
+		return vertices.count();
+	}
+};
+
+#endif // QUADARRAY_H