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
40 namespace WebCore {
41
SolidFillShader(GraphicsContext3D * context,unsigned program)42 SolidFillShader::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
create(GraphicsContext3D * context)50 PassOwnPtr<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
use(const AffineTransform & transform,const Color & color)60 void 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