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/*
* Copyright (C) 2011 Google Inc. All rights reserved.
* Copyright (C) 2012 Research In Motion Limited. 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 APPLE AND ITS 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 APPLE OR ITS 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 USE(3D_GRAPHICS)
#include "Extensions3DOpenGLCommon.h"
#include "ANGLEWebKitBridge.h"
#include "GraphicsContext3D.h"
#if PLATFORM(BLACKBERRY)
#include <BlackBerryPlatformLog.h>
#endif
#if PLATFORM(QT)
#include <private/qopenglextensions_p.h>
#elif USE(OPENGL_ES_2)
#include "OpenGLESShims.h"
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#elif PLATFORM(MAC)
#include <OpenGL/gl.h>
#elif PLATFORM(GTK) || PLATFORM(EFL) || PLATFORM(QT) || PLATFORM(WIN)
#include "OpenGLShims.h"
#endif
#include <wtf/MainThread.h>
#include <wtf/Vector.h>
namespace WebCore {
Extensions3DOpenGLCommon::Extensions3DOpenGLCommon(GraphicsContext3D* context)
: m_initializedAvailableExtensions(false)
, m_context(context)
, m_isNVIDIA(false)
, m_isAMD(false)
, m_isIntel(false)
, m_maySupportMultisampling(true)
, m_requiresBuiltInFunctionEmulation(false)
{
m_vendor = String(reinterpret_cast<const char*>(m_context->m_functions->glGetString(GL_VENDOR)));
Vector<String> vendorComponents;
m_vendor.lower().split(' ', vendorComponents);
if (vendorComponents.contains("nvidia"))
m_isNVIDIA = true;
if (vendorComponents.contains("ati") || vendorComponents.contains("amd"))
m_isAMD = true;
if (vendorComponents.contains("intel"))
m_isIntel = true;
#if PLATFORM(MAC)
if (m_isAMD || m_isIntel)
m_requiresBuiltInFunctionEmulation = true;
// Currently in Mac we only allow multisampling if the vendor is NVIDIA,
// or if the vendor is AMD/ATI and the system is 10.7.2 and above.
bool systemSupportsMultisampling = true;
#if !PLATFORM(IOS) && __MAC_OS_X_VERSION_MIN_REQUIRED < 1080
ASSERT(isMainThread());
static SInt32 version;
if (!version) {
if (Gestalt(gestaltSystemVersion, &version) != noErr)
systemSupportsMultisampling = false;
}
// See https://bugs.webkit.org/show_bug.cgi?id=77922 for more details
if (systemSupportsMultisampling)
systemSupportsMultisampling = version >= 0x1072;
#endif // SNOW_LEOPARD and LION
if (m_isAMD && !systemSupportsMultisampling)
m_maySupportMultisampling = false;
#endif
}
Extensions3DOpenGLCommon::~Extensions3DOpenGLCommon()
{
}
bool Extensions3DOpenGLCommon::supports(const String& name)
{
if (!m_initializedAvailableExtensions)
initializeAvailableExtensions();
return supportsExtension(name);
}
void Extensions3DOpenGLCommon::ensureEnabled(const String& name)
{
if (name == "GL_OES_standard_derivatives") {
// Enable support in ANGLE (if not enabled already)
ANGLEWebKitBridge& compiler = m_context->m_compiler;
ShBuiltInResources ANGLEResources = compiler.getResources();
if (!ANGLEResources.OES_standard_derivatives) {
ANGLEResources.OES_standard_derivatives = 1;
compiler.setResources(ANGLEResources);
}
} else if (name == "GL_EXT_draw_buffers") {
// Enable support in ANGLE (if not enabled already)
ANGLEWebKitBridge& compiler = m_context->m_compiler;
ShBuiltInResources ANGLEResources = compiler.getResources();
if (!ANGLEResources.EXT_draw_buffers) {
ANGLEResources.EXT_draw_buffers = 1;
m_context->getIntegerv(Extensions3D::MAX_DRAW_BUFFERS_EXT, &ANGLEResources.MaxDrawBuffers);
compiler.setResources(ANGLEResources);
}
}
}
bool Extensions3DOpenGLCommon::isEnabled(const String& name)
{
if (name == "GL_OES_standard_derivatives") {
ANGLEWebKitBridge& compiler = m_context->m_compiler;
return compiler.getResources().OES_standard_derivatives;
}
return supports(name);
}
int Extensions3DOpenGLCommon::getGraphicsResetStatusARB()
{
return GraphicsContext3D::NO_ERROR;
}
String Extensions3DOpenGLCommon::getTranslatedShaderSourceANGLE(Platform3DObject shader)
{
ASSERT(shader);
int GLshaderType;
ANGLEShaderType shaderType;
ANGLEWebKitBridge& compiler = m_context->m_compiler;
m_context->getShaderiv(shader, GraphicsContext3D::SHADER_TYPE, &GLshaderType);
if (GLshaderType == GraphicsContext3D::VERTEX_SHADER)
shaderType = SHADER_TYPE_VERTEX;
else if (GLshaderType == GraphicsContext3D::FRAGMENT_SHADER)
shaderType = SHADER_TYPE_FRAGMENT;
else
return ""; // Invalid shader type.
HashMap<Platform3DObject, GraphicsContext3D::ShaderSourceEntry>::iterator result = m_context->m_shaderSourceMap.find(shader);
if (result == m_context->m_shaderSourceMap.end())
return "";
GraphicsContext3D::ShaderSourceEntry& entry = result->value;
String translatedShaderSource;
String shaderInfoLog;
int extraCompileOptions = SH_MAP_LONG_VARIABLE_NAMES | SH_CLAMP_INDIRECT_ARRAY_BOUNDS;
if (m_requiresBuiltInFunctionEmulation)
extraCompileOptions |= SH_EMULATE_BUILT_IN_FUNCTIONS;
Vector<ANGLEShaderSymbol> symbols;
bool isValid = compiler.compileShaderSource(entry.source.utf8().data(), shaderType, translatedShaderSource, shaderInfoLog, symbols, extraCompileOptions);
entry.log = shaderInfoLog;
entry.isValid = isValid;
size_t numSymbols = symbols.size();
for (size_t i = 0; i < numSymbols; ++i) {
ANGLEShaderSymbol shaderSymbol = symbols[i];
GraphicsContext3D::SymbolInfo symbolInfo(shaderSymbol.dataType, shaderSymbol.size, shaderSymbol.mappedName);
entry.symbolMap(shaderSymbol.symbolType).set(shaderSymbol.name, symbolInfo);
}
if (!isValid)
return "";
return translatedShaderSource;
}
void Extensions3DOpenGLCommon::initializeAvailableExtensions()
{
String extensionsString = getExtensions();
Vector<String> availableExtensions;
extensionsString.split(" ", availableExtensions);
for (size_t i = 0; i < availableExtensions.size(); ++i)
m_availableExtensions.add(availableExtensions[i]);
m_initializedAvailableExtensions = true;
}
void Extensions3DOpenGLCommon::readnPixelsEXT(int, int, GC3Dsizei, GC3Dsizei, GC3Denum, GC3Denum, GC3Dsizei, void *)
{
m_context->synthesizeGLError(GL_INVALID_OPERATION);
}
void Extensions3DOpenGLCommon::getnUniformfvEXT(GC3Duint, int, GC3Dsizei, float *)
{
m_context->synthesizeGLError(GL_INVALID_OPERATION);
}
void Extensions3DOpenGLCommon::getnUniformivEXT(GC3Duint, int, GC3Dsizei, int *)
{
m_context->synthesizeGLError(GL_INVALID_OPERATION);
}
} // namespace WebCore
#endif // USE(3D_GRAPHICS)
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