1/* 2 * Copyright (c) 2010, Google Inc. All rights reserved. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31#include "config.h" 32 33#if ENABLE(ACCELERATED_2D_CANVAS) 34 35#include "SolidFillShader.h" 36 37#include "Color.h" 38#include "GraphicsContext3D.h" 39 40namespace WebCore { 41 42SolidFillShader::SolidFillShader(GraphicsContext3D* context, unsigned program) 43 : Shader(context, program) 44{ 45 m_matrixLocation = context->getUniformLocation(program, "matrix"); 46 m_colorLocation = context->getUniformLocation(program, "color"); 47 m_positionLocation = context->getAttribLocation(program, "position"); 48} 49 50PassOwnPtr<SolidFillShader> SolidFillShader::create(GraphicsContext3D* context) 51{ 52 unsigned program = loadProgram(context, 53 generateVertex(Shader::TwoDimensional, Shader::SolidFill), 54 generateFragment(Shader::TwoDimensional, Shader::SolidFill, Shader::NotAntialiased)); 55 if (!program) 56 return 0; 57 return new SolidFillShader(context, program); 58} 59 60void SolidFillShader::use(const AffineTransform& transform, const Color& color) 61{ 62 m_context->useProgram(m_program); 63 64 float rgba[4]; 65 color.getRGBA(rgba[0], rgba[1], rgba[2], rgba[3]); 66 m_context->uniform4f(m_colorLocation, rgba[0] * rgba[3], rgba[1] * rgba[3], rgba[2] * rgba[3], rgba[3]); 67 68 float matrix[9]; 69 affineTo3x3(transform, matrix); 70 m_context->uniformMatrix3fv(m_matrixLocation, false /*transpose*/, matrix, 1 /*count*/); 71 72 m_context->vertexAttribPointer(m_positionLocation, 2, GraphicsContext3D::FLOAT, false, 0, 0); 73 74 m_context->enableVertexAttribArray(m_positionLocation); 75} 76 77} 78 79#endif 80