| /* |
| * Copyright (C) 2012 Adobe Systems Incorporated. All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer. |
| * 2. 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. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER “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 HOLDER 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(CSS_SHADERS) && USE(3D_GRAPHICS) |
| #include "CustomFilterGlobalContext.h" |
| |
| #include "CustomFilterValidatedProgram.h" |
| #include "GraphicsContext3D.h" |
| |
| namespace WebCore { |
| |
| CustomFilterGlobalContext::CustomFilterGlobalContext() |
| { |
| } |
| |
| CustomFilterGlobalContext::~CustomFilterGlobalContext() |
| { |
| for (CustomFilterValidatedProgramsMap::iterator iter = m_programs.begin(); iter != m_programs.end(); ++iter) |
| iter->value->detachFromGlobalContext(); |
| } |
| |
| ANGLEWebKitBridge* CustomFilterGlobalContext::webglShaderValidator() |
| { |
| if (!m_webglShaderValidator) |
| m_webglShaderValidator = createShaderValidator(SH_WEBGL_SPEC); |
| return m_webglShaderValidator.get(); |
| } |
| |
| ANGLEWebKitBridge* CustomFilterGlobalContext::mixShaderValidator() |
| { |
| if (!m_mixShaderValidator) |
| m_mixShaderValidator = createShaderValidator(SH_CSS_SHADERS_SPEC); |
| return m_mixShaderValidator.get(); |
| } |
| |
| PassOwnPtr<ANGLEWebKitBridge> CustomFilterGlobalContext::createShaderValidator(ShShaderSpec shaderSpec) |
| { |
| OwnPtr<ANGLEWebKitBridge> validator = adoptPtr(new ANGLEWebKitBridge(SH_ESSL_OUTPUT, shaderSpec)); |
| ShBuiltInResources resources; |
| ShInitBuiltInResources(&resources); |
| validator->setResources(resources); |
| return validator.release(); |
| } |
| |
| void CustomFilterGlobalContext::prepareContextIfNeeded(HostWindow* hostWindow) |
| { |
| if (m_context.get()) |
| return; |
| |
| GraphicsContext3D::Attributes attributes; |
| attributes.preserveDrawingBuffer = true; |
| attributes.premultipliedAlpha = false; |
| attributes.shareResources = true; |
| attributes.preferDiscreteGPU = true; |
| m_context = GraphicsContext3D::create(attributes, hostWindow, GraphicsContext3D::RenderOffscreen); |
| if (!m_context) |
| return; |
| m_context->makeContextCurrent(); |
| m_context->enable(GraphicsContext3D::DEPTH_TEST); |
| } |
| |
| PassRefPtr<CustomFilterValidatedProgram> CustomFilterGlobalContext::getValidatedProgram(const CustomFilterProgramInfo& programInfo) |
| { |
| CustomFilterValidatedProgramsMap::iterator iter = m_programs.find(programInfo); |
| if (iter != m_programs.end()) |
| return iter->value; |
| |
| RefPtr<CustomFilterValidatedProgram> validatedProgram = CustomFilterValidatedProgram::create(this, programInfo); |
| m_programs.set(programInfo, validatedProgram.get()); |
| return validatedProgram.release(); |
| } |
| |
| void CustomFilterGlobalContext::removeValidatedProgram(const CustomFilterValidatedProgram* program) |
| { |
| CustomFilterValidatedProgramsMap::iterator iter = m_programs.find(program->programInfo()); |
| ASSERT(iter != m_programs.end()); |
| m_programs.remove(iter); |
| |
| #ifndef NDEBUG |
| // Check that there's no way we could have the same program under a different key. |
| for (iter = m_programs.begin(); iter != m_programs.end(); ++iter) |
| ASSERT(iter->value != program); |
| #endif |
| } |
| |
| } // namespace WebCore |
| |
| #endif // ENABLE(CSS_SHADERS) && USE(3D_GRAPHICS) |