void JSGlobalObjectInspectorController::reportAPIException(ExecState* exec, Exception* exception)
{
if (isTerminatedExecutionException(exception))
return;
ErrorHandlingScope errorScope(exec->vm());
RefPtr<ScriptCallStack> callStack = createScriptCallStackFromException(exec, exception, ScriptCallStack::maxCallStackSizeToCapture);
if (includesNativeCallStackWhenReportingExceptions())
appendAPIBacktrace(callStack.get());
// FIXME: <http://webkit.org/b/115087> Web Inspector: Should not evaluate JavaScript handling exceptions
// If this is a custom exception object, call toString on it to try and get a nice string representation for the exception.
String errorMessage = exception->value().toString(exec)->value(exec);
exec->clearException();
if (JSGlobalObjectConsoleClient::logToSystemConsole()) {
if (callStack->size()) {
const ScriptCallFrame& callFrame = callStack->at(0);
ConsoleClient::printConsoleMessage(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, callFrame.sourceURL(), callFrame.lineNumber(), callFrame.columnNumber());
} else
ConsoleClient::printConsoleMessage(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, String(), 0, 0);
}
m_consoleAgent->addMessageToConsole(std::make_unique<ConsoleMessage>(MessageSource::JS, MessageType::Log, MessageLevel::Error, errorMessage, callStack));
}
void
WebGLBuffer::BufferData(GLenum target, size_t size, const void* data, GLenum usage)
{
const char funcName[] = "bufferData";
if (!ValidateBufferUsageEnum(mContext, funcName, usage))
return;
if (mNumActiveTFOs) {
mContext->ErrorInvalidOperation("%s: Buffer is bound to an active transform"
" feedback object.",
funcName);
return;
}
const auto& gl = mContext->gl;
gl->MakeCurrent();
const ScopedLazyBind lazyBind(gl, target, this);
mContext->InvalidateBufferFetching();
#ifdef XP_MACOSX
// bug 790879
if (gl->WorkAroundDriverBugs() &&
size > INT32_MAX)
{
mContext->ErrorOutOfMemory("%s: Allocation size too large.", funcName);
return;
}
#endif
const bool sizeChanges = (size != ByteLength());
if (sizeChanges) {
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fBufferData(target, size, data, usage);
const auto error = errorScope.GetError();
if (error) {
MOZ_ASSERT(error == LOCAL_GL_OUT_OF_MEMORY);
mContext->ErrorOutOfMemory("%s: Error from driver: 0x%04x", funcName, error);
return;
}
} else {
gl->fBufferData(target, size, data, usage);
}
mUsage = usage;
mByteLength = size;
// Warning: Possibly shared memory. See bug 1225033.
if (!ElementArrayCacheBufferData(data, size)) {
mByteLength = 0;
mContext->ErrorOutOfMemory("%s: Failed update index buffer cache.", funcName);
}
}
void WebGLContext::AssertCachedBindings() const {
#ifdef DEBUG
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsWebGL2() ||
IsExtensionEnabled(WebGLExtensionID::OES_vertex_array_object)) {
AssertUintParamCorrect(gl, LOCAL_GL_VERTEX_ARRAY_BINDING,
mBoundVertexArray->mGLName);
}
GLint stencilBits = 0;
if (GetStencilBits(&stencilBits)) { // Depends on current draw framebuffer.
const GLuint stencilRefMask = (1 << stencilBits) - 1;
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_REF, stencilRefMask,
mStencilRefFront);
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_REF, stencilRefMask,
mStencilRefBack);
}
// Program
GLuint bound = mCurrentProgram ? mCurrentProgram->mGLName : 0;
AssertUintParamCorrect(gl, LOCAL_GL_CURRENT_PROGRAM, bound);
// Textures
GLenum activeTexture = mActiveTexture + LOCAL_GL_TEXTURE0;
AssertUintParamCorrect(gl, LOCAL_GL_ACTIVE_TEXTURE, activeTexture);
WebGLTexture* curTex = ActiveBoundTextureForTarget(LOCAL_GL_TEXTURE_2D);
bound = curTex ? curTex->mGLName : 0;
AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_2D, bound);
curTex = ActiveBoundTextureForTarget(LOCAL_GL_TEXTURE_CUBE_MAP);
bound = curTex ? curTex->mGLName : 0;
AssertUintParamCorrect(gl, LOCAL_GL_TEXTURE_BINDING_CUBE_MAP, bound);
// Buffers
bound = mBoundArrayBuffer ? mBoundArrayBuffer->mGLName : 0;
AssertUintParamCorrect(gl, LOCAL_GL_ARRAY_BUFFER_BINDING, bound);
MOZ_ASSERT(mBoundVertexArray);
WebGLBuffer* curBuff = mBoundVertexArray->mElementArrayBuffer;
bound = curBuff ? curBuff->mGLName : 0;
AssertUintParamCorrect(gl, LOCAL_GL_ELEMENT_ARRAY_BUFFER_BINDING, bound);
MOZ_ASSERT(!gl::GLContext::IsBadCallError(errorScope.GetError()));
#endif
// We do not check the renderbuffer binding, because we never rely on it
// matching.
}
static GLenum
DoRenderbufferStorageMaybeMultisample(gl::GLContext* gl, GLsizei samples,
GLenum internalFormat, GLsizei width,
GLsizei height)
{
MOZ_ASSERT_IF(samples >= 1, gl->IsSupported(gl::GLFeature::framebuffer_multisample));
// Certain OpenGL ES renderbuffer formats may not exist on desktop OpenGL.
switch (internalFormat) {
case LOCAL_GL_RGBA4:
case LOCAL_GL_RGB5_A1:
// 16-bit RGBA formats are not supported on desktop GL.
if (!gl->IsGLES())
internalFormat = LOCAL_GL_RGBA8;
break;
case LOCAL_GL_RGB565:
// RGB565 is not supported on desktop GL.
if (!gl->IsGLES())
internalFormat = LOCAL_GL_RGB8;
break;
case LOCAL_GL_DEPTH_COMPONENT16:
if (!gl->IsGLES() || gl->IsExtensionSupported(gl::GLContext::OES_depth24))
internalFormat = LOCAL_GL_DEPTH_COMPONENT24;
else if (gl->IsSupported(gl::GLFeature::packed_depth_stencil))
internalFormat = LOCAL_GL_DEPTH24_STENCIL8;
break;
case LOCAL_GL_DEPTH_STENCIL:
MOZ_CRASH("GFX: GL_DEPTH_STENCIL is not valid here.");
break;
default:
break;
}
gl::GLContext::LocalErrorScope errorScope(*gl);
if (samples > 0) {
gl->fRenderbufferStorageMultisample(LOCAL_GL_RENDERBUFFER, samples,
internalFormat, width, height);
} else {
gl->fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, internalFormat, width, height);
}
return errorScope.GetError();
}
JSObject* throwTerminatedExecutionException(ExecState* exec)
{
VM& vm = exec->vm();
ErrorHandlingScope errorScope(vm);
return vm.throwException(exec, createTerminatedExecutionException(&vm));
}
JSObject* throwStackOverflowError(ExecState* exec)
{
VM& vm = exec->vm();
ErrorHandlingScope errorScope(vm);
return vm.throwException(exec, createStackOverflowError(exec));
}
bool
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, const webgl::PackingInfo& pi,
GLenum* const out_error) const
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
*out_error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (*out_error)
return true;
}
const char* fallbackReason;
do {
if (mDepth != 1) {
fallbackReason = "depth is not 1";
break;
}
if (webgl->mPixelStore_UnpackSkipPixels ||
webgl->mPixelStore_UnpackSkipRows ||
webgl->mPixelStore_UnpackSkipImages)
{
fallbackReason = "non-zero UNPACK_SKIP_* not yet supported";
break;
}
const auto fnHasPremultMismatch = [&]() {
if (mSrcAlphaType == gfxAlphaType::Opaque)
return false;
const bool srcIsPremult = (mSrcAlphaType == gfxAlphaType::Premult);
const auto& dstIsPremult = webgl->mPixelStore_PremultiplyAlpha;
if (srcIsPremult == dstIsPremult)
return false;
if (dstIsPremult) {
fallbackReason = "UNPACK_PREMULTIPLY_ALPHA_WEBGL is not true";
} else {
fallbackReason = "UNPACK_PREMULTIPLY_ALPHA_WEBGL is not false";
}
return true;
};
if (fnHasPremultMismatch())
break;
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA) {
fallbackReason = "`format` is not RGB or RGBA";
break;
}
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE) {
fallbackReason = "`type` is not UNSIGNED_BYTE";
break;
}
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError()) {
fallbackReason = "bug: failed to attach to FB for blit";
break;
}
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
fallbackReason = "bug: failed to confirm FB for blit";
break;
}
const gfx::IntSize destSize(mWidth, mHeight);
const auto dstOrigin = (webgl->mPixelStore_FlipY ? gl::OriginPos::TopLeft
: gl::OriginPos::BottomLeft);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
fallbackReason = "likely bug: failed to blit";
break;
}
// Blitting was successful, so we're done!
*out_error = 0;
return true;
} while (false);
const nsPrintfCString perfMsg("%s: Failed to hit GPU-copy fast-path: %s (src type %u)",
funcName, fallbackReason, uint32_t(mImage->GetFormat()));
if (webgl->mPixelStore_RequireFastPath) {
webgl->ErrorInvalidOperation("%s", perfMsg.BeginReading());
return false;
}
webgl->GeneratePerfWarning("%s Falling back to CPU upload.",
perfMsg.BeginReading());
const RefPtr<gfx::SourceSurface> surf = mImage->GetAsSourceSurface();
RefPtr<gfx::DataSourceSurface> dataSurf;
if (surf) {
// WARNING: OSX can lose our MakeCurrent here.
dataSurf = surf->GetDataSurface();
}
if (!dataSurf) {
webgl->ErrorOutOfMemory("%s: GetAsSourceSurface or GetDataSurface failed after"
" blit failed for TexUnpackImage.",
funcName);
return false;
}
const TexUnpackSurface surfBlob(webgl, target, mWidth, mHeight, mDepth, dataSurf,
mSrcAlphaType);
return surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level,
dui, xOffset, yOffset, zOffset, pi, out_error);
}
bool
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, GLenum* const out_error) const
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
*out_error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (*out_error)
return false;
}
do {
if (mDepth != 1)
break;
const bool isDstPremult = webgl->mPixelStore_PremultiplyAlpha;
if (mIsSrcPremult != isDstPremult)
break;
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA)
break;
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE)
break;
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError())
break;
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE)
break;
const gfx::IntSize destSize(mWidth, mHeight);
const auto dstOrigin = (webgl->mPixelStore_FlipY ? gl::OriginPos::TopLeft
: gl::OriginPos::BottomLeft);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
break;
}
// Blitting was successful, so we're done!
*out_error = 0;
return true;
} while (false);
webgl->GenerateWarning("%s: Failed to hit GPU-copy fast-path. Falling back to CPU"
" upload.",
funcName);
const RefPtr<gfx::SourceSurface> surf = mImage->GetAsSourceSurface();
RefPtr<gfx::DataSourceSurface> dataSurf;
if (surf) {
// WARNING: OSX can lose our MakeCurrent here.
dataSurf = surf->GetDataSurface();
}
if (!dataSurf) {
webgl->ErrorOutOfMemory("%s: GetAsSourceSurface or GetDataSurface failed after"
" blit failed for TexUnpackImage.",
funcName);
return false;
}
const TexUnpackSurface surfBlob(webgl, target, mWidth, mHeight, mDepth, dataSurf,
mIsSrcPremult);
return surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level,
dui, xOffset, yOffset, zOffset, out_error);
}
void
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, GLenum* const out_glError)
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
*out_glError = 0;
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
GLenum error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (error) {
MOZ_ASSERT(!error);
*out_glError = LOCAL_GL_OUT_OF_MEMORY;
return;
}
}
do {
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA)
break;
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE)
break;
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError())
break;
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE)
break;
gl::OriginPos srcOrigin, dstOrigin;
OriginsForDOM(webgl, &srcOrigin, &dstOrigin);
const gfx::IntSize destSize(mWidth, mHeight);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
break;
}
return; // Blitting was successful, so we're done!
} while (false);
TexUnpackSurface surfBlob(mImage->GetAsSourceSurface(), mIsAlphaPremult);
surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level, dui,
xOffset, yOffset, zOffset, out_glError);
}
void
WebGLBuffer::BufferData(GLenum target, size_t size, const void* data, GLenum usage)
{
// Careful: data.Length() could conceivably be any uint32_t, but GLsizeiptr
// is like intptr_t.
if (!CheckedInt<GLsizeiptr>(size).isValid())
return mContext->ErrorOutOfMemory("bad size");
if (!ValidateBufferUsageEnum(mContext, usage))
return;
#ifdef XP_MACOSX
// bug 790879
if (mContext->gl->WorkAroundDriverBugs() &&
size > INT32_MAX)
{
mContext->ErrorOutOfMemory("Allocation size too large.");
return;
}
#endif
const void* uploadData = data;
UniqueBuffer newIndexCache;
if (target == LOCAL_GL_ELEMENT_ARRAY_BUFFER &&
mContext->mNeedsIndexValidation)
{
newIndexCache = malloc(size);
if (!newIndexCache) {
mContext->ErrorOutOfMemory("Failed to alloc index cache.");
return;
}
memcpy(newIndexCache.get(), data, size);
uploadData = newIndexCache.get();
}
const auto& gl = mContext->gl;
const ScopedLazyBind lazyBind(gl, target, this);
const bool sizeChanges = (size != ByteLength());
if (sizeChanges) {
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fBufferData(target, size, uploadData, usage);
const auto error = errorScope.GetError();
if (error) {
MOZ_ASSERT(error == LOCAL_GL_OUT_OF_MEMORY);
mContext->ErrorOutOfMemory("Error from driver: 0x%04x", error);
return;
}
} else {
gl->fBufferData(target, size, uploadData, usage);
}
mContext->OnDataAllocCall();
mUsage = usage;
mByteLength = size;
mFetchInvalidator.InvalidateCaches();
mIndexCache = std::move(newIndexCache);
if (mIndexCache) {
if (!mIndexRanges.empty()) {
mContext->GeneratePerfWarning("[%p] Invalidating %u ranges.", this,
uint32_t(mIndexRanges.size()));
mIndexRanges.clear();
}
}
ResetLastUpdateFenceId();
}
void WebGLContext::AssertCachedGlobalState() const {
#ifdef DEBUG
gl::GLContext::LocalErrorScope errorScope(*gl);
////////////////
// Draw state
MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_DITHER) == mDitherEnabled);
MOZ_ASSERT_IF(IsWebGL2(), gl->fIsEnabled(LOCAL_GL_RASTERIZER_DISCARD) ==
mRasterizerDiscardEnabled);
MOZ_ASSERT(gl->fIsEnabled(LOCAL_GL_SCISSOR_TEST) == mScissorTestEnabled);
// Cannot trivially check COLOR_CLEAR_VALUE, since in old GL versions glGet
// may clamp based on whether the current framebuffer is floating-point or
// not. This also means COLOR_CLEAR_VALUE save+restore is dangerous!
realGLboolean depthWriteMask = 0;
gl->fGetBooleanv(LOCAL_GL_DEPTH_WRITEMASK, &depthWriteMask);
MOZ_ASSERT(depthWriteMask == mDepthWriteMask);
GLfloat depthClearValue = 0.0f;
gl->fGetFloatv(LOCAL_GL_DEPTH_CLEAR_VALUE, &depthClearValue);
MOZ_ASSERT(IsCacheCorrect(mDepthClearValue, depthClearValue));
const int maxStencilBits = 8;
const GLuint maxStencilBitsMask = (1 << maxStencilBits) - 1;
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_CLEAR_VALUE,
maxStencilBitsMask, mStencilClearValue);
// GLES 3.0.4, $4.1.4, p177:
// [...] the front and back stencil mask are both set to the value `2^s -
// 1`, where `s` is greater than or equal to the number of bits in the
// deepest stencil buffer supported by the GL implementation.
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_VALUE_MASK,
maxStencilBitsMask, mStencilValueMaskFront);
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_VALUE_MASK,
maxStencilBitsMask, mStencilValueMaskBack);
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_WRITEMASK,
maxStencilBitsMask, mStencilWriteMaskFront);
AssertMaskedUintParamCorrect(gl, LOCAL_GL_STENCIL_BACK_WRITEMASK,
maxStencilBitsMask, mStencilWriteMaskBack);
// Viewport
GLint int4[4] = {0, 0, 0, 0};
gl->fGetIntegerv(LOCAL_GL_VIEWPORT, int4);
MOZ_ASSERT(int4[0] == mViewportX && int4[1] == mViewportY &&
int4[2] == mViewportWidth && int4[3] == mViewportHeight);
AssertUintParamCorrect(gl, LOCAL_GL_PACK_ALIGNMENT,
mPixelStore_PackAlignment);
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_ALIGNMENT,
mPixelStore_UnpackAlignment);
if (IsWebGL2()) {
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_IMAGE_HEIGHT,
mPixelStore_UnpackImageHeight);
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_SKIP_IMAGES,
mPixelStore_UnpackSkipImages);
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_ROW_LENGTH,
mPixelStore_UnpackRowLength);
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_SKIP_ROWS,
mPixelStore_UnpackSkipRows);
AssertUintParamCorrect(gl, LOCAL_GL_UNPACK_SKIP_PIXELS,
mPixelStore_UnpackSkipPixels);
AssertUintParamCorrect(gl, LOCAL_GL_PACK_ROW_LENGTH,
mPixelStore_PackRowLength);
AssertUintParamCorrect(gl, LOCAL_GL_PACK_SKIP_ROWS,
mPixelStore_PackSkipRows);
AssertUintParamCorrect(gl, LOCAL_GL_PACK_SKIP_PIXELS,
mPixelStore_PackSkipPixels);
}
MOZ_ASSERT(!gl::GLContext::IsBadCallError(errorScope.GetError()));
#endif
}