1 /* 2 Copyright (c) 2013 yvt 3 4 This file is part of OpenSpades. 5 6 OpenSpades is free software: you can redistribute it and/or modify 7 it under the terms of the GNU General Public License as published by 8 the Free Software Foundation, either version 3 of the License, or 9 (at your option) any later version. 10 11 OpenSpades is distributed in the hope that it will be useful, 12 but WITHOUT ANY WARRANTY; without even the implied warranty of 13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 GNU General Public License for more details. 15 16 You should have received a copy of the GNU General Public License 17 along with OpenSpades. If not, see <http://www.gnu.org/licenses/>. 18 19 */ 20 21 #include <cstdint> 22 23 #include "GLProgramAttribute.h" 24 #include "GLQuadRenderer.h" 25 26 namespace spades { 27 namespace draw { GLQuadRenderer(IGLDevice * device)28 GLQuadRenderer::GLQuadRenderer(IGLDevice *device) : device(device) {} 29 ~GLQuadRenderer()30 GLQuadRenderer::~GLQuadRenderer() {} 31 SetCoordAttributeIndex(IGLDevice::UInteger idx)32 void GLQuadRenderer::SetCoordAttributeIndex(IGLDevice::UInteger idx) { attrIndex = idx; } 33 Draw()34 void GLQuadRenderer::Draw() { 35 static const uint8_t vertices[][4] = {{0, 0}, {1, 0}, {1, 1}, {0, 1}}; 36 37 device->EnableVertexAttribArray(attrIndex, true); 38 device->VertexAttribPointer(attrIndex, 2, IGLDevice::UnsignedByte, false, 4, vertices); 39 device->DrawArrays(IGLDevice::TriangleFan, 0, 4); 40 device->EnableVertexAttribArray(attrIndex, false); 41 } 42 } 43 } 44