1 files changed, 93 insertions, 0 deletions
diff --git a/Source/WebCore/platform/graphics/gpu/SolidFillShader.cpp b/Source/WebCore/platform/graphics/gpu/SolidFillShader.cpp
new file mode 100644
index 0000000..86079be
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+++ b/Source/WebCore/platform/graphics/gpu/SolidFillShader.cpp
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+/*
+ * Copyright (c) 2010, Google Inc. All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are
+ * met:
+ *
+ *     * Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ *     * Redistributions in binary form must reproduce the above
+ * copyright notice, this list of conditions and the following disclaimer
+ * in the documentation and/or other materials provided with the
+ * distribution.
+ *     * Neither the name of Google Inc. nor the names of its
+ * contributors may be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+
+#if ENABLE(ACCELERATED_2D_CANVAS)
+
+#include "SolidFillShader.h"
+
+#include "Color.h"
+#include "GraphicsContext3D.h"
+
+namespace WebCore {
+
+SolidFillShader::SolidFillShader(GraphicsContext3D* context, unsigned program)
+    : Shader(context, program)
+{
+    m_matrixLocation = context->getUniformLocation(program, "matrix");
+    m_colorLocation = context->getUniformLocation(program, "color");
+    m_positionLocation = context->getAttribLocation(program, "position");
+}
+
+PassOwnPtr<SolidFillShader> SolidFillShader::create(GraphicsContext3D* context)
+{
+    static const char* vertexShaderSource =
+            "uniform mat3 matrix;\n"
+            "uniform vec4 color;\n"
+            "attribute vec3 position;\n"
+            "void main() {\n"
+            "    gl_Position = vec4(matrix * position, 1.0);\n"
+            "}\n";
+    static const char* fragmentShaderSource =
+            "#ifdef GL_ES\n"
+            "precision mediump float;\n"
+            "#endif\n"
+            "uniform mat3 matrix;\n"
+            "uniform vec4 color;\n"
+            "void main() {\n"
+            "    gl_FragColor = color;\n"
+            "}\n";
+    unsigned program = loadProgram(context, vertexShaderSource, fragmentShaderSource);
+    if (!program)
+        return 0;
+    return new SolidFillShader(context, program);
+}
+
+void SolidFillShader::use(const AffineTransform& transform, const Color& color)
+{
+    m_context->useProgram(m_program);
+
+    float rgba[4];
+    color.getRGBA(rgba[0], rgba[1], rgba[2], rgba[3]);
+    m_context->uniform4f(m_colorLocation, rgba[0] * rgba[3], rgba[1] * rgba[3], rgba[2] * rgba[3], rgba[3]);
+
+    float matrix[9];
+    affineTo3x3(transform, matrix);
+    m_context->uniformMatrix3fv(m_matrixLocation, false /*transpose*/, matrix, 1 /*count*/);
+
+    m_context->vertexAttribPointer(m_positionLocation, 3, GraphicsContext3D::FLOAT, false, 0, 0);
+
+    m_context->enableVertexAttribArray(m_positionLocation);
+}
+
+}
+
+#endif