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gecko-dev/dom/canvas/WebGLTextureUpload.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "WebGLTexture.h"
#include <algorithm>
#include "CanvasUtils.h"
#include "gfxPrefs.h"
#include "GLBlitHelper.h"
#include "GLContext.h"
#include "mozilla/Casting.h"
#include "mozilla/gfx/2D.h"
#include "mozilla/dom/HTMLCanvasElement.h"
#include "mozilla/dom/HTMLVideoElement.h"
#include "mozilla/dom/ImageBitmap.h"
#include "mozilla/dom/ImageData.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/Scoped.h"
#include "mozilla/Unused.h"
#include "ScopedGLHelpers.h"
#include "TexUnpackBlob.h"
#include "WebGLBuffer.h"
#include "WebGLContext.h"
#include "WebGLContextUtils.h"
#include "WebGLFramebuffer.h"
#include "WebGLTexelConversions.h"
namespace mozilla {
/* This file handles:
* TexStorage2D(texTarget, levels, internalFormat, width, height)
* TexStorage3D(texTarget, levels, intenralFormat, width, height, depth)
*
* TexImage2D(texImageTarget, level, internalFormat, width, height, border,
* unpackFormat, unpackType, data)
* TexImage3D(texImageTarget, level, internalFormat, width, height, depth,
* border, unpackFormat, unpackType, data)
* TexSubImage2D(texImageTarget, level, xOffset, yOffset, width, height,
* unpackFormat, unpackType, data)
* TexSubImage3D(texImageTarget, level, xOffset, yOffset, zOffset, width,
* height, depth, unpackFormat, unpackType, data)
*
* CompressedTexImage2D(texImageTarget, level, internalFormat, width, height,
* border, imageSize, data)
* CompressedTexImage3D(texImageTarget, level, internalFormat, width, height,
* depth, border, imageSize, data)
* CompressedTexSubImage2D(texImageTarget, level, xOffset, yOffset, width,
* height, sizedUnpackFormat, imageSize, data)
* CompressedTexSubImage3D(texImageTarget, level, xOffset, yOffset, zOffset,
* width, height, depth, sizedUnpackFormat, imageSize,
* data)
*
* CopyTexImage2D(texImageTarget, level, internalFormat, x, y, width, height,
* border)
* CopyTexImage3D - "Because the framebuffer is inhererntly two-dimensional,
* there is no CopyTexImage3D command."
* CopyTexSubImage2D(texImageTarget, level, xOffset, yOffset, x, y, width,
* height)
* CopyTexSubImage3D(texImageTarget, level, xOffset, yOffset, zOffset, x, y,
* width, height)
*/
static bool ValidateExtents(WebGLContext* webgl, GLsizei width, GLsizei height,
GLsizei depth, GLint border,
uint32_t* const out_width,
uint32_t* const out_height,
uint32_t* const out_depth) {
// Check border
if (border != 0) {
webgl->ErrorInvalidValue("`border` must be 0.");
return false;
}
if (width < 0 || height < 0 || depth < 0) {
/* GL ES Version 2.0.25 - 3.7.1 Texture Image Specification
* "If wt and ht are the specified image width and height,
* and if either wt or ht are less than zero, then the error
* INVALID_VALUE is generated."
*/
webgl->ErrorInvalidValue("`width`/`height`/`depth` must be >= 0.");
return false;
}
*out_width = width;
*out_height = height;
*out_depth = depth;
return true;
}
////////////////////////////////////////
// ArrayBufferView?
static inline bool DoesJSTypeMatchUnpackType(GLenum unpackType,
js::Scalar::Type jsType) {
switch (unpackType) {
case LOCAL_GL_BYTE:
return jsType == js::Scalar::Type::Int8;
case LOCAL_GL_UNSIGNED_BYTE:
return jsType == js::Scalar::Type::Uint8 ||
jsType == js::Scalar::Type::Uint8Clamped;
case LOCAL_GL_SHORT:
return jsType == js::Scalar::Type::Int16;
case LOCAL_GL_UNSIGNED_SHORT:
case LOCAL_GL_UNSIGNED_SHORT_4_4_4_4:
case LOCAL_GL_UNSIGNED_SHORT_5_5_5_1:
case LOCAL_GL_UNSIGNED_SHORT_5_6_5:
case LOCAL_GL_HALF_FLOAT:
case LOCAL_GL_HALF_FLOAT_OES:
return jsType == js::Scalar::Type::Uint16;
case LOCAL_GL_INT:
return jsType == js::Scalar::Type::Int32;
case LOCAL_GL_UNSIGNED_INT:
case LOCAL_GL_UNSIGNED_INT_2_10_10_10_REV:
case LOCAL_GL_UNSIGNED_INT_10F_11F_11F_REV:
case LOCAL_GL_UNSIGNED_INT_5_9_9_9_REV:
case LOCAL_GL_UNSIGNED_INT_24_8:
return jsType == js::Scalar::Type::Uint32;
case LOCAL_GL_FLOAT:
return jsType == js::Scalar::Type::Float32;
default:
return false;
}
}
static bool ValidateViewType(WebGLContext* webgl, GLenum unpackType,
const TexImageSource& src) {
if (!src.mView) return true;
const auto& view = *(src.mView);
const auto& jsType = view.Type();
if (!DoesJSTypeMatchUnpackType(unpackType, jsType)) {
webgl->ErrorInvalidOperation(
"ArrayBufferView type not compatible with"
" `type`.");
return false;
}
return true;
}
static bool ValidateUnpackInfo(WebGLContext* webgl,
const webgl::PackingInfo& pi) {
if (!webgl->mFormatUsage->AreUnpackEnumsValid(pi.format, pi.type)) {
webgl->ErrorInvalidEnum("Invalid unpack format/type: 0x%04x/0x%04x",
pi.format, pi.type);
return false;
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
static UniquePtr<webgl::TexUnpackBytes> FromView(
WebGLContext* webgl, TexImageTarget target, uint32_t width, uint32_t height,
uint32_t depth, const dom::ArrayBufferView* view, GLuint viewElemOffset,
GLuint viewElemLengthOverride, const GLenum errorVal) {
const bool isClientData = true;
const uint8_t* bytes = nullptr;
size_t availByteCount = 0;
if (view) {
if (!webgl->ValidateArrayBufferView(
*view, viewElemOffset, viewElemLengthOverride, errorVal,
const_cast<uint8_t**>(&bytes), &availByteCount)) {
return nullptr;
}
}
return MakeUnique<webgl::TexUnpackBytes>(webgl, target, width, height, depth,
isClientData, bytes, availByteCount);
}
static UniquePtr<webgl::TexUnpackBytes> FromPboOffset(
WebGLContext* webgl, TexImageTarget target, uint32_t width, uint32_t height,
uint32_t depth, WebGLsizeiptr pboOffset,
const Maybe<GLsizei>& expectedImageSize) {
if (pboOffset < 0) {
webgl->ErrorInvalidValue("offset cannot be negative.");
return nullptr;
}
const auto& buffer =
webgl->ValidateBufferSelection(LOCAL_GL_PIXEL_UNPACK_BUFFER);
if (!buffer) return nullptr;
size_t availBufferBytes = buffer->ByteLength();
if (size_t(pboOffset) > availBufferBytes) {
webgl->ErrorInvalidOperation("Offset is passed end of buffer.");
return nullptr;
}
availBufferBytes -= pboOffset;
if (expectedImageSize.isSome()) {
if (expectedImageSize.ref() < 0) {
webgl->ErrorInvalidValue("ImageSize can't be less than 0.");
return nullptr;
}
if (size_t(expectedImageSize.ref()) != availBufferBytes) {
webgl->ErrorInvalidOperation(
"ImageSize doesn't match the required upload byte size.");
return nullptr;
}
availBufferBytes = size_t(expectedImageSize.ref());
}
const bool isClientData = false;
const auto ptr = (const uint8_t*)pboOffset;
return MakeUnique<webgl::TexUnpackBytes>(webgl, target, width, height, depth,
isClientData, ptr, availBufferBytes);
}
static UniquePtr<webgl::TexUnpackBlob> FromImageBitmap(
WebGLContext* webgl, TexImageTarget target, uint32_t width, uint32_t height,
uint32_t depth, const dom::ImageBitmap& imageBitmap, ErrorResult* aRv) {
if (imageBitmap.IsWriteOnly()) {
aRv->Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
UniquePtr<dom::ImageBitmapCloneData> cloneData = imageBitmap.ToCloneData();
if (!cloneData) {
return nullptr;
}
const RefPtr<gfx::DataSourceSurface> surf = cloneData->mSurface;
if (!width) {
width = surf->GetSize().width;
}
if (!height) {
height = surf->GetSize().height;
}
// WhatWG "HTML Living Standard" (30 October 2015):
// "The getImageData(sx, sy, sw, sh) method [...] Pixels must be returned as
// non-premultiplied alpha values."
return MakeUnique<webgl::TexUnpackSurface>(
webgl, target, width, height, depth, surf, cloneData->mAlphaType);
}
static UniquePtr<webgl::TexUnpackBlob> FromImageData(
WebGLContext* webgl, TexImageTarget target, uint32_t width, uint32_t height,
uint32_t depth, const dom::ImageData& imageData,
dom::Uint8ClampedArray* scopedArr) {
DebugOnly<bool> inited = scopedArr->Init(imageData.GetDataObject());
MOZ_ASSERT(inited);
scopedArr->ComputeLengthAndData();
const DebugOnly<size_t> dataSize = scopedArr->Length();
const void* const data = scopedArr->Data();
const gfx::IntSize size(imageData.Width(), imageData.Height());
const size_t stride = size.width * 4;
const gfx::SurfaceFormat surfFormat = gfx::SurfaceFormat::R8G8B8A8;
// WhatWG "HTML Living Standard" (30 October 2015):
// "The getImageData(sx, sy, sw, sh) method [...] Pixels must be returned as
// non-premultiplied alpha values."
const auto alphaType = gfxAlphaType::NonPremult;
MOZ_ASSERT(dataSize == stride * size.height);
uint8_t* wrappableData = (uint8_t*)data;
const RefPtr<gfx::DataSourceSurface> surf =
gfx::Factory::CreateWrappingDataSourceSurface(wrappableData, stride, size,
surfFormat);
if (!surf) {
webgl->ErrorOutOfMemory("OOM in FromImageData.");
return nullptr;
}
////
if (!width) {
width = imageData.Width();
}
if (!height) {
height = imageData.Height();
}
////
return MakeUnique<webgl::TexUnpackSurface>(webgl, target, width, height,
depth, surf, alphaType);
}
UniquePtr<webgl::TexUnpackBlob> WebGLContext::FromDomElem(
TexImageTarget target, uint32_t width, uint32_t height, uint32_t depth,
const dom::Element& elem, ErrorResult* const out_error) {
if (elem.IsHTMLElement(nsGkAtoms::canvas)) {
const dom::HTMLCanvasElement* canvas =
static_cast<const dom::HTMLCanvasElement*>(&elem);
if (canvas->IsWriteOnly()) {
out_error->Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
}
// The canvas spec says that drawImage should draw the first frame of
// animated images. The webgl spec doesn't mention the issue, so we do the
// same as drawImage.
uint32_t flags = nsLayoutUtils::SFE_WANT_FIRST_FRAME_IF_IMAGE |
nsLayoutUtils::SFE_WANT_IMAGE_SURFACE |
nsLayoutUtils::SFE_USE_ELEMENT_SIZE_IF_VECTOR;
if (mPixelStore_ColorspaceConversion == LOCAL_GL_NONE)
flags |= nsLayoutUtils::SFE_NO_COLORSPACE_CONVERSION;
if (!mPixelStore_PremultiplyAlpha)
flags |= nsLayoutUtils::SFE_PREFER_NO_PREMULTIPLY_ALPHA;
RefPtr<gfx::DrawTarget> idealDrawTarget = nullptr; // Don't care for now.
auto sfer = nsLayoutUtils::SurfaceFromElement(
const_cast<dom::Element*>(&elem), flags, idealDrawTarget);
//////
uint32_t elemWidth = 0;
uint32_t elemHeight = 0;
layers::Image* layersImage = nullptr;
if (!gfxPrefs::WebGLDisableDOMBlitUploads() && sfer.mLayersImage) {
layersImage = sfer.mLayersImage;
elemWidth = layersImage->GetSize().width;
elemHeight = layersImage->GetSize().height;
}
RefPtr<gfx::DataSourceSurface> dataSurf;
if (!layersImage && sfer.GetSourceSurface()) {
const auto surf = sfer.GetSourceSurface();
elemWidth = surf->GetSize().width;
elemHeight = surf->GetSize().height;
// WARNING: OSX can lose our MakeCurrent here.
dataSurf = surf->GetDataSurface();
}
//////
if (!width) {
width = elemWidth;
}
if (!height) {
height = elemHeight;
}
////
if (!layersImage && !dataSurf) {
const bool isClientData = true;
return MakeUnique<webgl::TexUnpackBytes>(this, target, width, height, depth,
isClientData, nullptr, 0);
}
//////
// While it's counter-intuitive, the shape of the SFEResult API means that we
// should try to pull out a surface first, and then, if we do pull out a
// surface, check CORS/write-only/etc..
if (!sfer.mCORSUsed) {
auto& srcPrincipal = sfer.mPrincipal;
nsIPrincipal* dstPrincipal = GetCanvas()->NodePrincipal();
if (!dstPrincipal->Subsumes(srcPrincipal)) {
GenerateWarning("Cross-origin elements require CORS.");
out_error->Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
}
if (sfer.mIsWriteOnly) {
// mIsWriteOnly defaults to true, and so will be true even if SFE merely
// failed. Thus we must test mIsWriteOnly after successfully retrieving an
// Image or SourceSurface.
GenerateWarning("Element is write-only, thus cannot be uploaded.");
out_error->Throw(NS_ERROR_DOM_SECURITY_ERR);
return nullptr;
}
//////
// Ok, we're good!
if (layersImage) {
return MakeUnique<webgl::TexUnpackImage>(this, target, width, height, depth,
layersImage, sfer.mAlphaType);
}
MOZ_ASSERT(dataSurf);
return MakeUnique<webgl::TexUnpackSurface>(this, target, width, height, depth,
dataSurf, sfer.mAlphaType);
}
////////////////////////////////////////
UniquePtr<webgl::TexUnpackBlob> WebGLContext::From(
TexImageTarget target, GLsizei rawWidth, GLsizei rawHeight,
GLsizei rawDepth, GLint border, const TexImageSource& src,
dom::Uint8ClampedArray* const scopedArr) {
uint32_t width, height, depth;
if (!ValidateExtents(this, rawWidth, rawHeight, rawDepth, border, &width,
&height, &depth)) {
return nullptr;
}
if (src.mPboOffset) {
return FromPboOffset(this, target, width, height, depth, *(src.mPboOffset),
Nothing());
}
if (mBoundPixelUnpackBuffer) {
ErrorInvalidOperation("PIXEL_UNPACK_BUFFER must be null.");
return nullptr;
}
if (src.mImageBitmap) {
return FromImageBitmap(this, target, width, height, depth,
*(src.mImageBitmap), src.mOut_error);
}
if (src.mImageData) {
return FromImageData(this, target, width, height, depth, *(src.mImageData),
scopedArr);
}
if (src.mDomElem) {
return FromDomElem(target, width, height, depth, *(src.mDomElem),
src.mOut_error);
}
return FromView(this, target, width, height, depth, src.mView,
src.mViewElemOffset, src.mViewElemLengthOverride,
LOCAL_GL_INVALID_OPERATION);
}
////////////////////////////////////////////////////////////////////////////////
static UniquePtr<webgl::TexUnpackBlob> ValidateTexOrSubImage(
WebGLContext* webgl, TexImageTarget target, GLsizei rawWidth,
GLsizei rawHeight, GLsizei rawDepth, GLint border,
const webgl::PackingInfo& pi, const TexImageSource& src,
dom::Uint8ClampedArray* const scopedArr) {
if (!ValidateUnpackInfo(webgl, pi)) return nullptr;
if (!ValidateViewType(webgl, pi.type, src)) return nullptr;
auto blob = webgl->From(target, rawWidth, rawHeight, rawDepth, border, src,
scopedArr);
if (!blob || !blob->Validate(webgl, pi)) return nullptr;
return blob;
}
void WebGLTexture::TexImage(TexImageTarget target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth, GLint border,
const webgl::PackingInfo& pi,
const TexImageSource& src) {
dom::RootedSpiderMonkeyInterface<dom::Uint8ClampedArray> scopedArr(
dom::RootingCx());
const auto blob = ValidateTexOrSubImage(mContext, target, width, height,
depth, border, pi, src, &scopedArr);
if (!blob) return;
TexImage(target, level, internalFormat, pi, blob.get());
}
void WebGLTexture::TexSubImage(TexImageTarget target, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset,
GLsizei width, GLsizei height, GLsizei depth,
const webgl::PackingInfo& pi,
const TexImageSource& src) {
const GLint border = 0;
dom::RootedSpiderMonkeyInterface<dom::Uint8ClampedArray> scopedArr(
dom::RootingCx());
const auto blob = ValidateTexOrSubImage(mContext, target, width, height,
depth, border, pi, src, &scopedArr);
if (!blob) return;
if (!blob->HasData()) {
mContext->ErrorInvalidValue("Source must not be null.");
return;
}
TexSubImage(target, level, xOffset, yOffset, zOffset, pi, blob.get());
}
//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
static bool ValidateTexImage(WebGLContext* webgl, WebGLTexture* texture,
TexImageTarget target, GLint level,
webgl::ImageInfo** const out_imageInfo) {
// Check level
if (level < 0) {
webgl->ErrorInvalidValue("`level` must be >= 0.");
return false;
}
if (level >= WebGLTexture::kMaxLevelCount) {
webgl->ErrorInvalidValue("`level` is too large.");
return false;
}
auto& imageInfo = texture->ImageInfoAt(target, level);
*out_imageInfo = &imageInfo;
return true;
}
// For *TexImage*
bool WebGLTexture::ValidateTexImageSpecification(
TexImageTarget target, GLint rawLevel, uint32_t width, uint32_t height,
uint32_t depth, webgl::ImageInfo** const out_imageInfo) {
if (mImmutable) {
mContext->ErrorInvalidOperation("Specified texture is immutable.");
return false;
}
// Do this early to validate `level`.
webgl::ImageInfo* imageInfo;
if (!ValidateTexImage(mContext, this, target, rawLevel, &imageInfo))
return false;
const uint32_t level(rawLevel);
if (mTarget == LOCAL_GL_TEXTURE_CUBE_MAP && width != height) {
mContext->ErrorInvalidValue("Cube map images must be square.");
return false;
}
/* GLES 3.0.4, p133-134:
* GL_MAX_TEXTURE_SIZE is *not* the max allowed texture size. Rather, it is
* the max (width/height) size guaranteed not to generate an INVALID_VALUE for
* too-large dimensions. Sizes larger than GL_MAX_TEXTURE_SIZE *may or may
* not* result in an INVALID_VALUE, or possibly GL_OOM.
*
* However, we have needed to set our maximums lower in the past to prevent
* resource corruption. Therefore we have mGLMaxTextureSize, which is neither
* necessarily lower nor higher than MAX_TEXTURE_SIZE.
*
* Note that mGLMaxTextureSize must be >= than the advertized
* MAX_TEXTURE_SIZE. For simplicity, we advertize MAX_TEXTURE_SIZE as
* mGLMaxTextureSize.
*/
uint32_t maxWidthHeight = 0;
uint32_t maxDepth = 0;
uint32_t maxLevel = 0;
MOZ_ASSERT(level <= 31);
switch (target.get()) {
case LOCAL_GL_TEXTURE_2D:
maxWidthHeight = mContext->mGLMaxTextureSize >> level;
maxDepth = 1;
maxLevel = CeilingLog2(mContext->mGLMaxTextureSize);
break;
case LOCAL_GL_TEXTURE_3D:
maxWidthHeight = mContext->mGLMax3DTextureSize >> level;
maxDepth = maxWidthHeight;
maxLevel = CeilingLog2(mContext->mGLMax3DTextureSize);
break;
case LOCAL_GL_TEXTURE_2D_ARRAY:
maxWidthHeight = mContext->mGLMaxTextureSize >> level;
// "The maximum number of layers for two-dimensional array textures
// (depth) must be at least MAX_ARRAY_TEXTURE_LAYERS for all levels."
maxDepth = mContext->mGLMaxArrayTextureLayers;
maxLevel = CeilingLog2(mContext->mGLMaxTextureSize);
break;
default: // cube maps
MOZ_ASSERT(IsCubeMap());
maxWidthHeight = mContext->mGLMaxCubeMapTextureSize >> level;
maxDepth = 1;
maxLevel = CeilingLog2(mContext->mGLMaxCubeMapTextureSize);
break;
}
if (level > maxLevel) {
mContext->ErrorInvalidValue("Requested level is not supported for target.");
return false;
}
if (width > maxWidthHeight || height > maxWidthHeight || depth > maxDepth) {
mContext->ErrorInvalidValue("Requested size at this level is unsupported.");
return false;
}
{
/* GL ES Version 2.0.25 - 3.7.1 Texture Image Specification
* "If level is greater than zero, and either width or
* height is not a power-of-two, the error INVALID_VALUE is
* generated."
*
* This restriction does not apply to GL ES Version 3.0+.
*/
bool requirePOT = (!mContext->IsWebGL2() && level != 0);
if (requirePOT) {
if (!IsPowerOfTwo(width) || !IsPowerOfTwo(height)) {
mContext->ErrorInvalidValue(
"For level > 0, width and height must be"
" powers of two.");
return false;
}
}
}
*out_imageInfo = imageInfo;
return true;
}
// For *TexSubImage*
bool WebGLTexture::ValidateTexImageSelection(
TexImageTarget target, GLint level, GLint xOffset, GLint yOffset,
GLint zOffset, uint32_t width, uint32_t height, uint32_t depth,
webgl::ImageInfo** const out_imageInfo) {
// The conformance test wants bad arg checks before imageInfo checks.
if (xOffset < 0 || yOffset < 0 || zOffset < 0) {
mContext->ErrorInvalidValue("Offsets must be >=0.");
return false;
}
webgl::ImageInfo* imageInfo;
if (!ValidateTexImage(mContext, this, target, level, &imageInfo))
return false;
if (!imageInfo->IsDefined()) {
mContext->ErrorInvalidOperation(
"The specified TexImage has not yet been"
" specified.");
return false;
}
const auto totalX = CheckedUint32(xOffset) + width;
const auto totalY = CheckedUint32(yOffset) + height;
const auto totalZ = CheckedUint32(zOffset) + depth;
if (!totalX.isValid() || totalX.value() > imageInfo->mWidth ||
!totalY.isValid() || totalY.value() > imageInfo->mHeight ||
!totalZ.isValid() || totalZ.value() > imageInfo->mDepth) {
mContext->ErrorInvalidValue(
"Offset+size must be <= the size of the existing"
" specified image.");
return false;
}
*out_imageInfo = imageInfo;
return true;
}
static bool ValidateCompressedTexUnpack(WebGLContext* webgl, GLsizei width,
GLsizei height, GLsizei depth,
const webgl::FormatInfo* format,
size_t dataSize) {
auto compression = format->compression;
auto bytesPerBlock = compression->bytesPerBlock;
auto blockWidth = compression->blockWidth;
auto blockHeight = compression->blockHeight;
auto widthInBlocks = CheckedUint32(width) / blockWidth;
auto heightInBlocks = CheckedUint32(height) / blockHeight;
if (width % blockWidth) widthInBlocks += 1;
if (height % blockHeight) heightInBlocks += 1;
const CheckedUint32 blocksPerImage = widthInBlocks * heightInBlocks;
const CheckedUint32 bytesPerImage = bytesPerBlock * blocksPerImage;
const CheckedUint32 bytesNeeded = bytesPerImage * depth;
if (!bytesNeeded.isValid()) {
webgl->ErrorOutOfMemory("Overflow while computing the needed buffer size.");
return false;
}
if (dataSize != bytesNeeded.value()) {
webgl->ErrorInvalidValue(
"Provided buffer's size must match expected size."
" (needs %u, has %zu)",
bytesNeeded.value(), dataSize);
return false;
}
return true;
}
static bool DoChannelsMatchForCopyTexImage(const webgl::FormatInfo* srcFormat,
const webgl::FormatInfo* dstFormat) {
// GLES 3.0.4 p140 Table 3.16 "Valid CopyTexImage source
// framebuffer/destination texture base internal format combinations."
switch (srcFormat->unsizedFormat) {
case webgl::UnsizedFormat::RGBA:
switch (dstFormat->unsizedFormat) {
case webgl::UnsizedFormat::A:
case webgl::UnsizedFormat::L:
case webgl::UnsizedFormat::LA:
case webgl::UnsizedFormat::R:
case webgl::UnsizedFormat::RG:
case webgl::UnsizedFormat::RGB:
case webgl::UnsizedFormat::RGBA:
return true;
default:
return false;
}
case webgl::UnsizedFormat::RGB:
switch (dstFormat->unsizedFormat) {
case webgl::UnsizedFormat::L:
case webgl::UnsizedFormat::R:
case webgl::UnsizedFormat::RG:
case webgl::UnsizedFormat::RGB:
return true;
default:
return false;
}
case webgl::UnsizedFormat::RG:
switch (dstFormat->unsizedFormat) {
case webgl::UnsizedFormat::L:
case webgl::UnsizedFormat::R:
case webgl::UnsizedFormat::RG:
return true;
default:
return false;
}
case webgl::UnsizedFormat::R:
switch (dstFormat->unsizedFormat) {
case webgl::UnsizedFormat::L:
case webgl::UnsizedFormat::R:
return true;
default:
return false;
}
default:
return false;
}
}
static bool EnsureImageDataInitializedForUpload(
WebGLTexture* tex, TexImageTarget target, GLint level, GLint xOffset,
GLint yOffset, GLint zOffset, uint32_t width, uint32_t height,
uint32_t depth, webgl::ImageInfo* imageInfo) {
if (!imageInfo->mHasData) {
const bool isFullUpload =
(!xOffset && !yOffset && !zOffset && width == imageInfo->mWidth &&
height == imageInfo->mHeight && depth == imageInfo->mDepth);
if (!isFullUpload) {
WebGLContext* webgl = tex->mContext;
webgl->GenerateWarning(
"Texture has not been initialized prior to a"
" partial upload, forcing the browser to clear it."
" This may be slow.");
if (!tex->EnsureImageDataInitialized(target, level)) {
MOZ_ASSERT(false, "Unexpected failure to init image data.");
return false;
}
}
}
return true;
}
//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
// Actual calls
static inline GLenum DoTexStorage(gl::GLContext* gl, TexTarget target,
GLsizei levels, GLenum sizedFormat,
GLsizei width, GLsizei height,
GLsizei depth) {
gl::GLContext::LocalErrorScope errorScope(*gl);
switch (target.get()) {
case LOCAL_GL_TEXTURE_2D:
case LOCAL_GL_TEXTURE_CUBE_MAP:
MOZ_ASSERT(depth == 1);
gl->fTexStorage2D(target.get(), levels, sizedFormat, width, height);
break;
case LOCAL_GL_TEXTURE_3D:
case LOCAL_GL_TEXTURE_2D_ARRAY:
gl->fTexStorage3D(target.get(), levels, sizedFormat, width, height,
depth);
break;
default:
MOZ_CRASH("GFX: bad target");
}
return errorScope.GetError();
}
bool IsTarget3D(TexImageTarget target) {
switch (target.get()) {
case LOCAL_GL_TEXTURE_2D:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_X:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Y:
case LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_Z:
case LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z:
return false;
case LOCAL_GL_TEXTURE_3D:
case LOCAL_GL_TEXTURE_2D_ARRAY:
return true;
default:
MOZ_CRASH("GFX: bad target");
}
}
GLenum DoTexImage(gl::GLContext* gl, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLsizei width,
GLsizei height, GLsizei depth, const void* data) {
const GLint border = 0;
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsTarget3D(target)) {
gl->fTexImage3D(target.get(), level, dui->internalFormat, width, height,
depth, border, dui->unpackFormat, dui->unpackType, data);
} else {
MOZ_ASSERT(depth == 1);
gl->fTexImage2D(target.get(), level, dui->internalFormat, width, height,
border, dui->unpackFormat, dui->unpackType, data);
}
return errorScope.GetError();
}
GLenum DoTexSubImage(gl::GLContext* gl, TexImageTarget target, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset, GLsizei width,
GLsizei height, GLsizei depth,
const webgl::PackingInfo& pi, const void* data) {
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsTarget3D(target)) {
gl->fTexSubImage3D(target.get(), level, xOffset, yOffset, zOffset, width,
height, depth, pi.format, pi.type, data);
} else {
MOZ_ASSERT(zOffset == 0);
MOZ_ASSERT(depth == 1);
gl->fTexSubImage2D(target.get(), level, xOffset, yOffset, width, height,
pi.format, pi.type, data);
}
return errorScope.GetError();
}
static inline GLenum DoCompressedTexImage(gl::GLContext* gl,
TexImageTarget target, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLsizei depth,
GLsizei dataSize, const void* data) {
const GLint border = 0;
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsTarget3D(target)) {
gl->fCompressedTexImage3D(target.get(), level, internalFormat, width,
height, depth, border, dataSize, data);
} else {
MOZ_ASSERT(depth == 1);
gl->fCompressedTexImage2D(target.get(), level, internalFormat, width,
height, border, dataSize, data);
}
return errorScope.GetError();
}
GLenum DoCompressedTexSubImage(gl::GLContext* gl, TexImageTarget target,
GLint level, GLint xOffset, GLint yOffset,
GLint zOffset, GLsizei width, GLsizei height,
GLsizei depth, GLenum sizedUnpackFormat,
GLsizei dataSize, const void* data) {
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsTarget3D(target)) {
gl->fCompressedTexSubImage3D(target.get(), level, xOffset, yOffset, zOffset,
width, height, depth, sizedUnpackFormat,
dataSize, data);
} else {
MOZ_ASSERT(zOffset == 0);
MOZ_ASSERT(depth == 1);
gl->fCompressedTexSubImage2D(target.get(), level, xOffset, yOffset, width,
height, sizedUnpackFormat, dataSize, data);
}
return errorScope.GetError();
}
static inline GLenum DoCopyTexSubImage(gl::GLContext* gl, TexImageTarget target,
GLint level, GLint xOffset,
GLint yOffset, GLint zOffset, GLint x,
GLint y, GLsizei width, GLsizei height) {
gl::GLContext::LocalErrorScope errorScope(*gl);
if (IsTarget3D(target)) {
gl->fCopyTexSubImage3D(target.get(), level, xOffset, yOffset, zOffset, x, y,
width, height);
} else {
MOZ_ASSERT(zOffset == 0);
gl->fCopyTexSubImage2D(target.get(), level, xOffset, yOffset, x, y, width,
height);
}
return errorScope.GetError();
}
//////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////////////////////
// Actual (mostly generic) function implementations
static bool ValidateCompressedTexImageRestrictions(
WebGLContext* webgl, TexImageTarget target, uint32_t level,
const webgl::FormatInfo* format, uint32_t width, uint32_t height,
uint32_t depth) {
const auto fnIsDimValid_S3TC = [level](uint32_t size, uint32_t blockSize) {
if (size % blockSize == 0) return true;
if (level == 0) return false;
return (size == 0 || size == 1 || size == 2);
};
switch (format->compression->family) {
case webgl::CompressionFamily::ASTC:
if (target == LOCAL_GL_TEXTURE_3D &&
!webgl->gl->IsExtensionSupported(
gl::GLContext::KHR_texture_compression_astc_hdr)) {
webgl->ErrorInvalidOperation("TEXTURE_3D requires ASTC's hdr profile.");
return false;
}
break;
case webgl::CompressionFamily::PVRTC:
if (!IsPowerOfTwo(width) || !IsPowerOfTwo(height)) {
webgl->ErrorInvalidValue("%s requires power-of-two width and height.",
format->name);
return false;
}
break;
case webgl::CompressionFamily::S3TC:
if (!fnIsDimValid_S3TC(width, format->compression->blockWidth) ||
!fnIsDimValid_S3TC(height, format->compression->blockHeight)) {
webgl->ErrorInvalidOperation(
"%s requires that width and height are"
" block-aligned, or, if level>0, equal to 0, 1,"
" or 2.",
format->name);
return false;
}
break;
// Default: There are no restrictions on CompressedTexImage.
default: // ETC1, ES3
break;
}
return true;
}
static bool ValidateTargetForFormat(WebGLContext* webgl, TexImageTarget target,
const webgl::FormatInfo* format) {
// GLES 3.0.4 p127:
// "Textures with a base internal format of DEPTH_COMPONENT or DEPTH_STENCIL
// are supported by texture image specification commands only if `target` is
// TEXTURE_2D, TEXTURE_2D_ARRAY, or TEXTURE_CUBE_MAP. Using these formats in
// conjunction with any other `target` will result in an INVALID_OPERATION
// error."
const bool ok = [&]() {
if (bool(format->d) & (target == LOCAL_GL_TEXTURE_3D)) return false;
if (format->compression) {
switch (format->compression->family) {
case webgl::CompressionFamily::ES3:
case webgl::CompressionFamily::S3TC:
if (target == LOCAL_GL_TEXTURE_3D) return false;
break;
case webgl::CompressionFamily::ETC1:
case webgl::CompressionFamily::PVRTC:
case webgl::CompressionFamily::RGTC:
if (target == LOCAL_GL_TEXTURE_3D ||
target == LOCAL_GL_TEXTURE_2D_ARRAY) {
return false;
}
break;
default:
break;
}
}
return true;
}();
if (!ok) {
webgl->ErrorInvalidOperation("Format %s cannot be used with target %s.",
format->name, GetEnumName(target.get()));
return false;
}
return true;
}
void WebGLTexture::TexStorage(TexTarget target, GLsizei levels,
GLenum sizedFormat, GLsizei width, GLsizei height,
GLsizei depth) {
// Check levels
if (levels < 1) {
mContext->ErrorInvalidValue("`levels` must be >= 1.");
return;
}
if (!width || !height || !depth) {
mContext->ErrorInvalidValue("Dimensions must be non-zero.");
return;
}
const TexImageTarget testTarget =
IsCubeMap() ? LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X : target.get();
webgl::ImageInfo* baseImageInfo;
if (!ValidateTexImageSpecification(testTarget, 0, width, height, depth,
&baseImageInfo)) {
return;
}
MOZ_ALWAYS_TRUE(baseImageInfo);
auto dstUsage = mContext->mFormatUsage->GetSizedTexUsage(sizedFormat);
if (!dstUsage) {
mContext->ErrorInvalidEnumInfo("internalformat", sizedFormat);
return;
}
auto dstFormat = dstUsage->format;
if (!ValidateTargetForFormat(mContext, testTarget, dstFormat)) return;
if (dstFormat->compression) {
if (!ValidateCompressedTexImageRestrictions(
mContext, testTarget, 0, dstFormat, width, height, depth)) {
return;
}
}
////////////////////////////////////
const bool levelsOk = [&]() {
// Right-shift is only defined for bits-1, which is too large anyways.
const auto lastLevel = uint32_t(levels - 1);
if (lastLevel > 31) return false;
const auto lastLevelWidth = uint32_t(width) >> lastLevel;
const auto lastLevelHeight = uint32_t(height) >> lastLevel;
// If these are all zero, then some earlier level was the final 1x1(x1)
// level.
bool ok = lastLevelWidth || lastLevelHeight;
if (target == LOCAL_GL_TEXTURE_3D) {
const auto lastLevelDepth = uint32_t(depth) >> lastLevel;
ok |= bool(lastLevelDepth);
}
return ok;
}();
if (!levelsOk) {
mContext->ErrorInvalidOperation(
"Too many levels requested for the given"
" dimensions. (levels: %u, width: %u, height: %u,"
" depth: %u)",
levels, width, height, depth);
return;
}
////////////////////////////////////
// Do the thing!
GLenum error = DoTexStorage(mContext->gl, target.get(), levels, sizedFormat,
width, height, depth);
mContext->OnDataAllocCall();
if (error == LOCAL_GL_OUT_OF_MEMORY) {
mContext->ErrorOutOfMemory("Ran out of memory during texture allocation.");
return;
}
if (error) {
mContext->GenerateError(error, "Unexpected error from driver.");
const nsPrintfCString call(
"DoTexStorage(0x%04x, %i, 0x%04x, %i,%i,%i) -> 0x%04x", target.get(),
levels, sizedFormat, width, height, depth, error);
gfxCriticalError() << "Unexpected error from driver: "
<< call.BeginReading();
return;
}
////////////////////////////////////
// Update our specification data.
const bool isDataInitialized = false;
const webgl::ImageInfo newInfo{dstUsage, uint32_t(width), uint32_t(height),
uint32_t(depth), isDataInitialized};
{
const auto base_level = mBaseMipmapLevel;
mBaseMipmapLevel = 0;
ImageInfoAtFace(0, 0) = newInfo;
PopulateMipChain(levels - 1);
mBaseMipmapLevel = base_level;
}
mImmutable = true;
mImmutableLevelCount = AutoAssertCast(levels);
ClampLevelBaseAndMax();
}
////////////////////////////////////////
// Tex(Sub)Image
void WebGLTexture::TexImage(TexImageTarget target, GLint level,
GLenum internalFormat, const webgl::PackingInfo& pi,
const webgl::TexUnpackBlob* blob) {
////////////////////////////////////
// Get dest info
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSpecification(target, level, blob->mWidth, blob->mHeight,
blob->mDepth, &imageInfo)) {
return;
}
MOZ_ASSERT(imageInfo);
const auto& fua = mContext->mFormatUsage;
if (!fua->IsInternalFormatEnumValid(internalFormat)) {
mContext->ErrorInvalidValue("Invalid internalformat: 0x%04x",
internalFormat);
return;
}
auto dstUsage = fua->GetSizedTexUsage(internalFormat);
if (!dstUsage) {
if (internalFormat != pi.format) {
/* GL ES Version 3.0.4 - 3.8.3 Texture Image Specification
* "Specifying a combination of values for format, type, and
* internalformat that is not listed as a valid combination
* in tables 3.2 or 3.3 generates the error INVALID_OPERATION."
*/
mContext->ErrorInvalidOperation(
"Unsized internalFormat must match"
" unpack format.");
return;
}
dstUsage = fua->GetUnsizedTexUsage(pi);
}
if (!dstUsage) {
mContext->ErrorInvalidOperation(
"Invalid internalformat/format/type:"
" 0x%04x/0x%04x/0x%04x",
internalFormat, pi.format, pi.type);
return;
}
const webgl::DriverUnpackInfo* driverUnpackInfo;
if (!dstUsage->IsUnpackValid(pi, &driverUnpackInfo)) {
mContext->ErrorInvalidOperation(
"Mismatched internalFormat and format/type:"
" 0x%04x and 0x%04x/0x%04x",
internalFormat, pi.format, pi.type);
return;
}
////////////////////////////////////
// Check that source and dest info are compatible
auto dstFormat = dstUsage->format;
if (!ValidateTargetForFormat(mContext, target, dstFormat)) return;
if (!mContext->IsWebGL2() && dstFormat->d) {
if (target != LOCAL_GL_TEXTURE_2D || blob->HasData() || level != 0) {
mContext->ErrorInvalidOperation(
"With format %s, this function may only"
" be called with target=TEXTURE_2D,"
" data=null, and level=0.",
dstFormat->name);
return;
}
}
////////////////////////////////////
// Do the thing!
// It's tempting to do allocation first, and TexSubImage second, but this is
// generally slower.
const webgl::ImageInfo newImageInfo{dstUsage, blob->mWidth, blob->mHeight,
blob->mDepth, blob->HasData()};
const bool isSubImage = false;
const bool needsRespec = (imageInfo->mWidth != newImageInfo.mWidth ||
imageInfo->mHeight != newImageInfo.mHeight ||
imageInfo->mDepth != newImageInfo.mDepth ||
imageInfo->mFormat != newImageInfo.mFormat);
const GLint xOffset = 0;
const GLint yOffset = 0;
const GLint zOffset = 0;
GLenum glError;
if (!blob->TexOrSubImage(isSubImage, needsRespec, this, target, level,
driverUnpackInfo, xOffset, yOffset, zOffset, pi,
&glError)) {
return;
}
mContext->OnDataAllocCall();
if (glError == LOCAL_GL_OUT_OF_MEMORY) {
mContext->ErrorOutOfMemory("Driver ran out of memory during upload.");
return;
}
if (glError) {
const auto enumStr = EnumString(glError);
const nsPrintfCString dui(
"Unexpected error %s during upload. (dui: %x/%x/%x)", enumStr.c_str(),
driverUnpackInfo->internalFormat, driverUnpackInfo->unpackFormat,
driverUnpackInfo->unpackType);
mContext->ErrorInvalidOperation("%s", dui.BeginReading());
gfxCriticalError() << mContext->FuncName() << ": " << dui.BeginReading();
return;
}
////////////////////////////////////
// Update our specification data.
*imageInfo = newImageInfo;
InvalidateCaches();
}
void WebGLTexture::TexSubImage(TexImageTarget target, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset,
const webgl::PackingInfo& pi,
const webgl::TexUnpackBlob* blob) {
////////////////////////////////////
// Get dest info
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSelection(target, level, xOffset, yOffset, zOffset,
blob->mWidth, blob->mHeight, blob->mDepth,
&imageInfo)) {
return;
}
MOZ_ASSERT(imageInfo);
auto dstUsage = imageInfo->mFormat;
auto dstFormat = dstUsage->format;
if (!mContext->IsWebGL2() && dstFormat->d) {
mContext->ErrorInvalidOperation(
"Function may not be called on a texture of"
" format %s.",
dstFormat->name);
return;
}
////////////////////////////////////
// Get source info
const webgl::DriverUnpackInfo* driverUnpackInfo;
if (!dstUsage->IsUnpackValid(pi, &driverUnpackInfo)) {
mContext->ErrorInvalidOperation(
"Mismatched internalFormat and format/type:"
" %s and 0x%04x/0x%04x",
dstFormat->name, pi.format, pi.type);
return;
}
////////////////////////////////////
// Do the thing!
if (!EnsureImageDataInitializedForUpload(
this, target, level, xOffset, yOffset, zOffset, blob->mWidth,
blob->mHeight, blob->mDepth, imageInfo)) {
return;
}
const bool isSubImage = true;
const bool needsRespec = false;
GLenum glError;
if (!blob->TexOrSubImage(isSubImage, needsRespec, this, target, level,
driverUnpackInfo, xOffset, yOffset, zOffset, pi,
&glError)) {
return;
}
if (glError == LOCAL_GL_OUT_OF_MEMORY) {
mContext->ErrorOutOfMemory("Driver ran out of memory during upload.");
return;
}
if (glError) {
const auto enumStr = EnumString(glError);
const nsPrintfCString dui(
"Unexpected error %s during upload. (dui: %x/%x/%x)", enumStr.c_str(),
driverUnpackInfo->internalFormat, driverUnpackInfo->unpackFormat,
driverUnpackInfo->unpackType);
mContext->ErrorInvalidOperation("%s", dui.BeginReading());
gfxCriticalError() << mContext->FuncName() << ": " << dui.BeginReading();
return;
}
////////////////////////////////////
// Update our specification data?
imageInfo->mHasData = true;
}
////////////////////////////////////////
// CompressedTex(Sub)Image
UniquePtr<webgl::TexUnpackBytes> WebGLContext::FromCompressed(
TexImageTarget target, GLsizei rawWidth, GLsizei rawHeight,
GLsizei rawDepth, GLint border, const TexImageSource& src,
const Maybe<GLsizei>& expectedImageSize) {
uint32_t width, height, depth;
if (!ValidateExtents(this, rawWidth, rawHeight, rawDepth, border, &width,
&height, &depth)) {
return nullptr;
}
if (src.mPboOffset) {
return FromPboOffset(this, target, width, height, depth, *(src.mPboOffset),
expectedImageSize);
}
if (mBoundPixelUnpackBuffer) {
ErrorInvalidOperation("PIXEL_UNPACK_BUFFER must be null.");
return nullptr;
}
return FromView(this, target, width, height, depth, src.mView,
src.mViewElemOffset, src.mViewElemLengthOverride,
LOCAL_GL_INVALID_VALUE);
}
void WebGLTexture::CompressedTexImage(TexImageTarget target, GLint level,
GLenum internalFormat, GLsizei rawWidth,
GLsizei rawHeight, GLsizei rawDepth,
GLint border, const TexImageSource& src,
const Maybe<GLsizei>& expectedImageSize) {
const auto blob = mContext->FromCompressed(
target, rawWidth, rawHeight, rawDepth, border, src, expectedImageSize);
if (!blob) return;
////////////////////////////////////
// Get dest info
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSpecification(target, level, blob->mWidth, blob->mHeight,
blob->mDepth, &imageInfo)) {
return;
}
MOZ_ASSERT(imageInfo);
auto usage = mContext->mFormatUsage->GetSizedTexUsage(internalFormat);
if (!usage || !usage->format->compression) {
mContext->ErrorInvalidEnumArg("internalFormat", internalFormat);
return;
}
auto format = usage->format;
if (!ValidateTargetForFormat(mContext, target, format)) return;
////////////////////////////////////
// Get source info
if (!ValidateCompressedTexUnpack(mContext, blob->mWidth, blob->mHeight,
blob->mDepth, format, blob->mAvailBytes)) {
return;
}
////////////////////////////////////
// Check that source is compatible with dest
if (!ValidateCompressedTexImageRestrictions(mContext, target, level, format,
blob->mWidth, blob->mHeight,
blob->mDepth)) {
return;
}
////////////////////////////////////
// Do the thing!
const ScopedLazyBind bindPBO(mContext->gl, LOCAL_GL_PIXEL_UNPACK_BUFFER,
mContext->mBoundPixelUnpackBuffer);
// Warning: Possibly shared memory. See bug 1225033.
const auto error = DoCompressedTexImage(
mContext->gl, target, level, internalFormat, blob->mWidth, blob->mHeight,
blob->mDepth, blob->mAvailBytes, blob->mPtr);
mContext->OnDataAllocCall();
if (error == LOCAL_GL_OUT_OF_MEMORY) {
mContext->ErrorOutOfMemory("Ran out of memory during upload.");
return;
}
if (error) {
mContext->GenerateError(error, "Unexpected error from driver.");
const nsPrintfCString call(
"DoCompressedTexImage(0x%04x, %i, 0x%04x, %u,%u,%u, %u) -> 0x%04x",
target.get(), level, internalFormat, blob->mWidth, blob->mHeight,
blob->mDepth, uint32_t(blob->mAvailBytes), error);
gfxCriticalError() << "Unexpected error from driver: "
<< call.BeginReading();
return;
}
////////////////////////////////////
// Update our specification data.
const bool isDataInitialized = true;
const webgl::ImageInfo newImageInfo{usage, blob->mWidth, blob->mHeight,
blob->mDepth, isDataInitialized};
*imageInfo = newImageInfo;
InvalidateCaches();
}
static inline bool IsSubImageBlockAligned(
const webgl::CompressedFormatInfo* compression,
const webgl::ImageInfo* imageInfo, GLint xOffset, GLint yOffset,
uint32_t width, uint32_t height) {
if (xOffset % compression->blockWidth != 0 ||
yOffset % compression->blockHeight != 0) {
return false;
}
if (width % compression->blockWidth != 0 &&
xOffset + width != imageInfo->mWidth)
return false;
if (height % compression->blockHeight != 0 &&
yOffset + height != imageInfo->mHeight)
return false;
return true;
}
void WebGLTexture::CompressedTexSubImage(
TexImageTarget target, GLint level, GLint xOffset, GLint yOffset,
GLint zOffset, GLsizei rawWidth, GLsizei rawHeight, GLsizei rawDepth,
GLenum sizedUnpackFormat, const TexImageSource& src,
const Maybe<GLsizei>& expectedImageSize) {
const GLint border = 0;
const auto blob = mContext->FromCompressed(
target, rawWidth, rawHeight, rawDepth, border, src, expectedImageSize);
if (!blob) return;
////////////////////////////////////
// Get dest info
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSelection(target, level, xOffset, yOffset, zOffset,
blob->mWidth, blob->mHeight, blob->mDepth,
&imageInfo)) {
return;
}
MOZ_ASSERT(imageInfo);
auto dstUsage = imageInfo->mFormat;
auto dstFormat = dstUsage->format;
////////////////////////////////////
// Get source info
auto srcUsage = mContext->mFormatUsage->GetSizedTexUsage(sizedUnpackFormat);
if (!srcUsage || !srcUsage->format->compression) {
mContext->ErrorInvalidEnumArg("sizedUnpackFormat", sizedUnpackFormat);
return;
}
if (srcUsage != dstUsage) {
mContext->ErrorInvalidOperation(
"`format` must match the format of the"
" existing texture image.");
return;
}
auto format = srcUsage->format;
MOZ_ASSERT(format == dstFormat);
if (!ValidateCompressedTexUnpack(mContext, blob->mWidth, blob->mHeight,
blob->mDepth, format, blob->mAvailBytes)) {
return;
}
////////////////////////////////////
// Check that source is compatible with dest
switch (format->compression->family) {
// Forbidden:
case webgl::CompressionFamily::ETC1:
mContext->ErrorInvalidOperation(
"Format does not allow sub-image"
" updates.");
return;
// Block-aligned:
case webgl::CompressionFamily::ES3: // Yes, the ES3 formats don't match the
// ES3
case webgl::CompressionFamily::S3TC: // default behavior.
case webgl::CompressionFamily::BPTC:
case webgl::CompressionFamily::RGTC:
if (!IsSubImageBlockAligned(dstFormat->compression, imageInfo, xOffset,
yOffset, blob->mWidth, blob->mHeight)) {
mContext->ErrorInvalidOperation(
"Format requires block-aligned sub-image"
" updates.");
return;
}
break;
// Full-only: (The ES3 default)
default: // PVRTC
if (xOffset || yOffset || blob->mWidth != imageInfo->mWidth ||
blob->mHeight != imageInfo->mHeight) {
mContext->ErrorInvalidOperation(
"Format does not allow partial sub-image"
" updates.");
return;
}
break;
}
////////////////////////////////////
// Do the thing!
if (!EnsureImageDataInitializedForUpload(
this, target, level, xOffset, yOffset, zOffset, blob->mWidth,
blob->mHeight, blob->mDepth, imageInfo)) {
return;
}
const ScopedLazyBind bindPBO(mContext->gl, LOCAL_GL_PIXEL_UNPACK_BUFFER,
mContext->mBoundPixelUnpackBuffer);
// Warning: Possibly shared memory. See bug 1225033.
const auto error = DoCompressedTexSubImage(
mContext->gl, target, level, xOffset, yOffset, zOffset, blob->mWidth,
blob->mHeight, blob->mDepth, sizedUnpackFormat, blob->mAvailBytes,
blob->mPtr);
if (error == LOCAL_GL_OUT_OF_MEMORY) {
mContext->ErrorOutOfMemory("Ran out of memory during upload.");
return;
}
if (error) {
mContext->GenerateError(error, "Unexpected error from driver.");
const nsPrintfCString call(
"DoCompressedTexSubImage(0x%04x, %i, %i,%i,%i, %u,%u,%u, 0x%04x, %u) "
"-> 0x%04x",
target.get(), level, xOffset, yOffset, zOffset, blob->mWidth,
blob->mHeight, blob->mDepth, sizedUnpackFormat,
uint32_t(blob->mAvailBytes), error);
gfxCriticalError() << "Unexpected error from driver: "
<< call.BeginReading();
return;
}
////////////////////////////////////
// Update our specification data?
imageInfo->mHasData = true;
}
////////////////////////////////////////
// CopyTex(Sub)Image
static bool ValidateCopyTexImageFormats(WebGLContext* webgl,
const webgl::FormatInfo* srcFormat,
const webgl::FormatInfo* dstFormat) {
MOZ_ASSERT(!srcFormat->compression);
if (dstFormat->compression) {
webgl->ErrorInvalidEnum(
"Specified destination must not have a compressed"
" format.");
return false;
}
if (dstFormat->effectiveFormat == webgl::EffectiveFormat::RGB9_E5) {
webgl->ErrorInvalidOperation(
"RGB9_E5 is an invalid destination for"
" CopyTex(Sub)Image. (GLES 3.0.4 p145)");
return false;
}
if (!DoChannelsMatchForCopyTexImage(srcFormat, dstFormat)) {
webgl->ErrorInvalidOperation(
"Destination channels must be compatible with"
" source channels. (GLES 3.0.4 p140 Table 3.16)");
return false;
}
return true;
}
////////////////////////////////////////////////////////////////////////////////
class ScopedCopyTexImageSource {
WebGLContext* const mWebGL;
GLuint mRB;
GLuint mFB;
public:
ScopedCopyTexImageSource(WebGLContext* webgl, uint32_t srcWidth,
uint32_t srcHeight,
const webgl::FormatInfo* srcFormat,
const webgl::FormatUsageInfo* dstUsage);
~ScopedCopyTexImageSource();
};
ScopedCopyTexImageSource::ScopedCopyTexImageSource(
WebGLContext* webgl, uint32_t srcWidth, uint32_t srcHeight,
const webgl::FormatInfo* srcFormat, const webgl::FormatUsageInfo* dstUsage)
: mWebGL(webgl), mRB(0), mFB(0) {
switch (dstUsage->format->unsizedFormat) {
case webgl::UnsizedFormat::L:
case webgl::UnsizedFormat::A:
case webgl::UnsizedFormat::LA:
webgl->GenerateWarning(
"Copying to a LUMINANCE, ALPHA, or LUMINANCE_ALPHA"
" is deprecated, and has severely reduced performance"
" on some platforms.");
break;
default:
MOZ_ASSERT(!dstUsage->textureSwizzleRGBA);
return;
}
if (!dstUsage->textureSwizzleRGBA) return;
gl::GLContext* gl = webgl->gl;
GLenum sizedFormat;
switch (srcFormat->componentType) {
case webgl::ComponentType::NormUInt:
sizedFormat = LOCAL_GL_RGBA8;
break;
case webgl::ComponentType::Float:
if (webgl->IsExtensionEnabled(
WebGLExtensionID::WEBGL_color_buffer_float)) {
sizedFormat = LOCAL_GL_RGBA32F;
break;
}
if (webgl->IsExtensionEnabled(
WebGLExtensionID::EXT_color_buffer_half_float)) {
sizedFormat = LOCAL_GL_RGBA16F;
break;
}
MOZ_CRASH("GFX: Should be able to request CopyTexImage from Float.");
default:
MOZ_CRASH("GFX: Should be able to request CopyTexImage from this type.");
}
gl::ScopedTexture scopedTex(gl);
gl::ScopedBindTexture scopedBindTex(gl, scopedTex.Texture(),
LOCAL_GL_TEXTURE_2D);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER,
LOCAL_GL_NEAREST);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER,
LOCAL_GL_NEAREST);
GLint blitSwizzle[4] = {LOCAL_GL_ZERO};
switch (dstUsage->format->unsizedFormat) {
case webgl::UnsizedFormat::L:
blitSwizzle[0] = LOCAL_GL_RED;
break;
case webgl::UnsizedFormat::A:
blitSwizzle[0] = LOCAL_GL_ALPHA;
break;
case webgl::UnsizedFormat::LA:
blitSwizzle[0] = LOCAL_GL_RED;
blitSwizzle[1] = LOCAL_GL_ALPHA;
break;
default:
MOZ_CRASH("GFX: Unhandled unsizedFormat.");
}
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_R,
blitSwizzle[0]);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_G,
blitSwizzle[1]);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_B,
blitSwizzle[2]);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_A,
blitSwizzle[3]);
gl->fCopyTexImage2D(LOCAL_GL_TEXTURE_2D, 0, sizedFormat, 0, 0, srcWidth,
srcHeight, 0);
// Now create the swizzled FB we'll be exposing.
GLuint rgbaRB = 0;
gl->fGenRenderbuffers(1, &rgbaRB);
gl::ScopedBindRenderbuffer scopedRB(gl, rgbaRB);
gl->fRenderbufferStorage(LOCAL_GL_RENDERBUFFER, sizedFormat, srcWidth,
srcHeight);
GLuint rgbaFB = 0;
gl->fGenFramebuffers(1, &rgbaFB);
gl->fBindFramebuffer(LOCAL_GL_FRAMEBUFFER, rgbaFB);
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
LOCAL_GL_RENDERBUFFER, rgbaRB);
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
MOZ_CRASH("GFX: Temp framebuffer is not complete.");
}
// Restore RB binding.
scopedRB.Unwrap(); // This function should really have a better name.
// Draw-blit rgbaTex into rgbaFB.
const gfx::IntSize srcSize(srcWidth, srcHeight);
{
const gl::ScopedBindFramebuffer bindFB(gl, rgbaFB);
gl->BlitHelper()->DrawBlitTextureToFramebuffer(scopedTex.Texture(), srcSize,
srcSize);
}
// Restore Tex2D binding and destroy the temp tex.
scopedBindTex.Unwrap();
scopedTex.Unwrap();
// Leave RB and FB alive, and FB bound.
mRB = rgbaRB;
mFB = rgbaFB;
}
template <typename T>
static inline GLenum ToGLHandle(const T& obj) {
return (obj ? obj->mGLName : 0);
}
ScopedCopyTexImageSource::~ScopedCopyTexImageSource() {
if (!mFB) {
MOZ_ASSERT(!mRB);
return;
}
MOZ_ASSERT(mRB);
gl::GLContext* gl = mWebGL->gl;
// If we're swizzling, it's because we're on a GL core (3.2+) profile, which
// has split framebuffer support.
gl->fBindFramebuffer(LOCAL_GL_DRAW_FRAMEBUFFER,
ToGLHandle(mWebGL->mBoundDrawFramebuffer));
gl->fBindFramebuffer(LOCAL_GL_READ_FRAMEBUFFER,
ToGLHandle(mWebGL->mBoundReadFramebuffer));
gl->fDeleteFramebuffers(1, &mFB);
gl->fDeleteRenderbuffers(1, &mRB);
}
////////////////////////////////////////////////////////////////////////////////
static bool GetUnsizedFormatForCopy(GLenum internalFormat,
webgl::UnsizedFormat* const out) {
switch (internalFormat) {
case LOCAL_GL_RED:
*out = webgl::UnsizedFormat::R;
break;
case LOCAL_GL_RG:
*out = webgl::UnsizedFormat::RG;
break;
case LOCAL_GL_RGB:
*out = webgl::UnsizedFormat::RGB;
break;
case LOCAL_GL_RGBA:
*out = webgl::UnsizedFormat::RGBA;
break;
case LOCAL_GL_LUMINANCE:
*out = webgl::UnsizedFormat::L;
break;
case LOCAL_GL_ALPHA:
*out = webgl::UnsizedFormat::A;
break;
case LOCAL_GL_LUMINANCE_ALPHA:
*out = webgl::UnsizedFormat::LA;
break;
default:
return false;
}
return true;
}
static const webgl::FormatUsageInfo* ValidateCopyDestUsage(
WebGLContext* webgl, const webgl::FormatInfo* srcFormat,
GLenum internalFormat) {
const auto& fua = webgl->mFormatUsage;
switch (internalFormat) {
case LOCAL_GL_R8_SNORM:
case LOCAL_GL_RG8_SNORM:
case LOCAL_GL_RGB8_SNORM:
case LOCAL_GL_RGBA8_SNORM:
webgl->ErrorInvalidEnum("SNORM formats are invalid for CopyTexImage.");
return nullptr;
}
auto dstUsage = fua->GetSizedTexUsage(internalFormat);
if (!dstUsage) {
// Ok, maybe it's unsized.
webgl::UnsizedFormat unsizedFormat;
if (!GetUnsizedFormatForCopy(internalFormat, &unsizedFormat)) {
webgl->ErrorInvalidEnumInfo("internalFormat", internalFormat);
return nullptr;
}
const auto dstFormat = srcFormat->GetCopyDecayFormat(unsizedFormat);
if (dstFormat) {
dstUsage = fua->GetUsage(dstFormat->effectiveFormat);
}
if (!dstUsage) {
webgl->ErrorInvalidOperation(
"0x%04x is not a valid unsized format for"
" source format %s.",
internalFormat, srcFormat->name);
return nullptr;
}
return dstUsage;
}
// Alright, it's sized.
const auto dstFormat = dstUsage->format;
if (dstFormat->componentType != srcFormat->componentType) {
webgl->ErrorInvalidOperation(
"For sized internalFormats, source and dest"
" component types must match. (source: %s, dest:"
" %s)",
srcFormat->name, dstFormat->name);
return nullptr;
}
bool componentSizesMatch = true;
if (dstFormat->r) {
componentSizesMatch &= (dstFormat->r == srcFormat->r);
}
if (dstFormat->g) {
componentSizesMatch &= (dstFormat->g == srcFormat->g);
}
if (dstFormat->b) {
componentSizesMatch &= (dstFormat->b == srcFormat->b);
}
if (dstFormat->a) {
componentSizesMatch &= (dstFormat->a == srcFormat->a);
}
if (!componentSizesMatch) {
webgl->ErrorInvalidOperation(
"For sized internalFormats, source and dest"
" component sizes must match exactly. (source: %s,"
" dest: %s)",
srcFormat->name, dstFormat->name);
return nullptr;
}
return dstUsage;
}
bool WebGLTexture::ValidateCopyTexImageForFeedback(uint32_t level,
GLint layer) const {
const auto& fb = mContext->mBoundReadFramebuffer;
if (fb) {
const auto& attach = fb->ColorReadBuffer();
MOZ_ASSERT(attach);
if (attach->Texture() == this && attach->Layer() == layer &&
uint32_t(attach->MipLevel()) == level) {
// Note that the TexImageTargets *don't* have to match for this to be
// undefined per GLES 3.0.4 p211, thus an INVALID_OP in WebGL.
mContext->ErrorInvalidOperation(
"Feedback loop detected, as this texture"
" is already attached to READ_FRAMEBUFFER's"
" READ_BUFFER-selected COLOR_ATTACHMENT%u.",
attach->mAttachmentPoint);
return false;
}
}
return true;
}
static bool DoCopyTexOrSubImage(WebGLContext* webgl, bool isSubImage,
const WebGLTexture* tex, TexImageTarget target,
GLint level, GLint xWithinSrc, GLint yWithinSrc,
uint32_t srcTotalWidth, uint32_t srcTotalHeight,
const webgl::FormatUsageInfo* srcUsage,
GLint xOffset, GLint yOffset, GLint zOffset,
uint32_t dstWidth, uint32_t dstHeight,
const webgl::FormatUsageInfo* dstUsage) {
const auto& gl = webgl->gl;
////
int32_t readX, readY;
int32_t writeX, writeY;
int32_t rwWidth, rwHeight;
if (!Intersect(srcTotalWidth, xWithinSrc, dstWidth, &readX, &writeX,
&rwWidth) ||
!Intersect(srcTotalHeight, yWithinSrc, dstHeight, &readY, &writeY,
&rwHeight)) {
webgl->ErrorOutOfMemory("Bad subrect selection.");
return false;
}
writeX += xOffset;
writeY += yOffset;
////
GLenum error = 0;
nsCString errorText;
do {
const auto& idealUnpack = dstUsage->idealUnpack;
if (!isSubImage) {
UniqueBuffer buffer;
if (uint32_t(rwWidth) != dstWidth || uint32_t(rwHeight) != dstHeight) {
const auto& pi = idealUnpack->ToPacking();
CheckedInt<size_t> byteCount = BytesPerPixel(pi);
byteCount *= dstWidth;
byteCount *= dstHeight;
if (byteCount.isValid()) {
buffer = calloc(1u, byteCount.value());
}
if (!buffer.get()) {
webgl->ErrorOutOfMemory("Ran out of memory allocating zeros.");
return false;
}
}
const ScopedUnpackReset unpackReset(webgl);
gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 1);
error = DoTexImage(gl, target, level, idealUnpack, dstWidth, dstHeight, 1,
buffer.get());
if (error) {
errorText = nsPrintfCString(
"DoTexImage(0x%04x, %i, {0x%04x, 0x%04x, 0x%04x}, %u,%u,1) -> "
"0x%04x",
target.get(), level, idealUnpack->internalFormat,
idealUnpack->unpackFormat, idealUnpack->unpackType, dstWidth,
dstHeight, error);
break;
}
}
if (!rwWidth || !rwHeight) {
// There aren't any pixels to copy, so we're 'done'.
return true;
}
const auto& srcFormat = srcUsage->format;
ScopedCopyTexImageSource maybeSwizzle(webgl, srcTotalWidth, srcTotalHeight,
srcFormat, dstUsage);
error = DoCopyTexSubImage(gl, target, level, writeX, writeY, zOffset, readX,
readY, rwWidth, rwHeight);
if (error) {
errorText = nsPrintfCString(
"DoCopyTexSubImage(0x%04x, %i, %i,%i,%i, %i,%i, %u,%u) -> 0x%04x",
target.get(), level, writeX, writeY, zOffset, readX, readY, rwWidth,
rwHeight, error);
break;
}
return true;
} while (false);
if (error == LOCAL_GL_OUT_OF_MEMORY) {
webgl->ErrorOutOfMemory("Ran out of memory during texture copy.");
return false;
}
if (gl->IsANGLE() && error == LOCAL_GL_INVALID_OPERATION) {
webgl->ErrorImplementationBug(
"ANGLE is particular about CopyTexSubImage"
" formats matching exactly.");
return false;
}
webgl->GenerateError(error, "Unexpected error from driver.");
gfxCriticalError() << "Unexpected error from driver: "
<< errorText.BeginReading();
return false;
}
// There is no CopyTexImage3D.
void WebGLTexture::CopyTexImage2D(TexImageTarget target, GLint level,
GLenum internalFormat, GLint x, GLint y,
GLsizei rawWidth, GLsizei rawHeight,
GLint border) {
////////////////////////////////////
// Get dest info
uint32_t width, height, depth;
if (!ValidateExtents(mContext, rawWidth, rawHeight, 1, border, &width,
&height, &depth)) {
return;
}
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSpecification(target, level, width, height, depth,
&imageInfo))
return;
MOZ_ASSERT(imageInfo);
////////////////////////////////////
// Get source info
const webgl::FormatUsageInfo* srcUsage;
uint32_t srcTotalWidth;
uint32_t srcTotalHeight;
if (!mContext->BindCurFBForColorRead(&srcUsage, &srcTotalWidth,
&srcTotalHeight)) {
return;
}
if (!ValidateCopyTexImageForFeedback(level)) return;
////////////////////////////////////
// Check that source and dest info are compatible
const auto& srcFormat = srcUsage->format;
const auto dstUsage =
ValidateCopyDestUsage(mContext, srcFormat, internalFormat);
if (!dstUsage) return;
const auto& dstFormat = dstUsage->format;
if (!ValidateTargetForFormat(mContext, target, dstFormat)) return;
if (!mContext->IsWebGL2() && dstFormat->d) {
mContext->ErrorInvalidOperation(
"Function may not be called with format %s.", dstFormat->name);
return;
}
if (!ValidateCopyTexImageFormats(mContext, srcFormat, dstFormat)) return;
////////////////////////////////////
// Do the thing!
const bool isSubImage = false;
if (!DoCopyTexOrSubImage(mContext, isSubImage, this, target, level, x, y,
srcTotalWidth, srcTotalHeight, srcUsage, 0, 0, 0,
width, height, dstUsage)) {
return;
}
mContext->OnDataAllocCall();
////////////////////////////////////
// Update our specification data.
const bool isDataInitialized = true;
const webgl::ImageInfo newImageInfo{dstUsage, width, height, depth,
isDataInitialized};
*imageInfo = newImageInfo;
InvalidateCaches();
}
void WebGLTexture::CopyTexSubImage(TexImageTarget target, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset,
GLint x, GLint y, GLsizei rawWidth,
GLsizei rawHeight) {
uint32_t width, height, depth;
if (!ValidateExtents(mContext, rawWidth, rawHeight, 1, 0, &width, &height,
&depth)) {
return;
}
////////////////////////////////////
// Get dest info
webgl::ImageInfo* imageInfo;
if (!ValidateTexImageSelection(target, level, xOffset, yOffset, zOffset,
width, height, depth, &imageInfo)) {
return;
}
MOZ_ASSERT(imageInfo);
auto dstUsage = imageInfo->mFormat;
MOZ_ASSERT(dstUsage);
auto dstFormat = dstUsage->format;
if (!mContext->IsWebGL2() && dstFormat->d) {
mContext->ErrorInvalidOperation(
"Function may not be called on a texture of"
" format %s.",
dstFormat->name);
return;
}
////////////////////////////////////
// Get source info
const webgl::FormatUsageInfo* srcUsage;
uint32_t srcTotalWidth;
uint32_t srcTotalHeight;
if (!mContext->BindCurFBForColorRead(&srcUsage, &srcTotalWidth,
&srcTotalHeight)) {
return;
}
if (!ValidateCopyTexImageForFeedback(level, zOffset)) return;
////////////////////////////////////
// Check that source and dest info are compatible
auto srcFormat = srcUsage->format;
if (!ValidateCopyTexImageFormats(mContext, srcFormat, dstFormat)) return;
////////////////////////////////////
// Do the thing!
if (!EnsureImageDataInitializedForUpload(this, target, level, xOffset,
yOffset, zOffset, width, height,
depth, imageInfo)) {
return;
}
const bool isSubImage = true;
if (!DoCopyTexOrSubImage(mContext, isSubImage, this, target, level, x, y,
srcTotalWidth, srcTotalHeight, srcUsage, xOffset,
yOffset, zOffset, width, height, dstUsage)) {
return;
}
////////////////////////////////////
// Update our specification data?
imageInfo->mHasData = true;
}
} // namespace mozilla
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