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gecko/dom/canvas/WebGLTextureUpload.cpp

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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* 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 "GLBlitHelper.h"
#include "GLContext.h"
#include "mozilla/dom/HTMLVideoElement.h"
#include "mozilla/dom/ImageData.h"
#include "mozilla/MathAlgorithms.h"
#include "mozilla/Scoped.h"
#include "ScopedGLHelpers.h"
#include "WebGLContext.h"
#include "WebGLContextUtils.h"
#include "WebGLFramebuffer.h"
#include "WebGLTexelConversions.h"
namespace mozilla {
bool
DoesTargetMatchDimensions(WebGLContext* webgl, TexImageTarget target, uint8_t funcDims,
const char* funcName)
{
uint8_t targetDims;
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:
targetDims = 2;
break;
case LOCAL_GL_TEXTURE_3D:
targetDims = 3;
break;
default:
MOZ_CRASH("Unhandled texImageTarget.");
}
if (targetDims != funcDims) {
webgl->ErrorInvalidEnum("%s: `target` must match function dimensions.", funcName);
return false;
}
return true;
}
void
WebGLTexture::CompressedTexImage2D(TexImageTarget texImageTarget,
GLint level,
GLenum internalFormat,
GLsizei width, GLsizei height, GLint border,
const dom::ArrayBufferView& view)
{
const WebGLTexImageFunc func = WebGLTexImageFunc::CompTexImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
const char funcName[] = "compressedTexImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (!mContext->ValidateTexImage(texImageTarget.get(), level, internalFormat,
0, 0, 0, width, height, 0,
border, LOCAL_GL_NONE,
LOCAL_GL_NONE,
func, dims))
{
return;
}
view.ComputeLengthAndData();
uint32_t byteLength = view.Length();
if (!mContext->ValidateCompTexImageDataSize(level, internalFormat, width, height, byteLength, func, dims)) {
return;
}
if (!mContext->ValidateCompTexImageSize(level, internalFormat, 0, 0, width, height, width, height, func, dims))
{
return;
}
if (mImmutable) {
return mContext->ErrorInvalidOperation(
"compressedTexImage2D: disallowed because the texture bound to "
"this target has already been made immutable by texStorage2D");
}
mContext->MakeContextCurrent();
gl::GLContext* gl = mContext->gl;
gl->fCompressedTexImage2D(texImageTarget.get(), level, internalFormat, width, height, border, byteLength, view.Data());
SetImageInfo(texImageTarget, level, width, height, 1, internalFormat,
WebGLImageDataStatus::InitializedImageData);
}
void
WebGLTexture::CompressedTexSubImage2D(TexImageTarget texImageTarget, GLint level, GLint xOffset,
GLint yOffset, GLsizei width, GLsizei height,
GLenum internalFormat,
const dom::ArrayBufferView& view)
{
const WebGLTexImageFunc func = WebGLTexImageFunc::CompTexSubImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
const char funcName[] = "compressedTexSubImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (!mContext->ValidateTexImage(texImageTarget.get(),
level, internalFormat,
xOffset, yOffset, 0,
width, height, 0,
0, LOCAL_GL_NONE, LOCAL_GL_NONE,
func, dims))
{
return;
}
WebGLTexture::ImageInfo& levelInfo = ImageInfoAt(texImageTarget, level);
if (internalFormat != levelInfo.EffectiveInternalFormat()) {
return mContext->ErrorInvalidOperation("compressedTexImage2D: internalFormat does not match the existing image");
}
view.ComputeLengthAndData();
uint32_t byteLength = view.Length();
if (!mContext->ValidateCompTexImageDataSize(level, internalFormat, width, height, byteLength, func, dims))
return;
if (!mContext->ValidateCompTexImageSize(level, internalFormat,
xOffset, yOffset,
width, height,
levelInfo.Width(), levelInfo.Height(),
func, dims))
{
return;
}
if (levelInfo.HasUninitializedImageData()) {
bool coversWholeImage = xOffset == 0 &&
yOffset == 0 &&
width == levelInfo.Width() &&
height == levelInfo.Height();
if (coversWholeImage) {
SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
if (!EnsureInitializedImageData(texImageTarget, level))
return;
}
}
mContext->MakeContextCurrent();
gl::GLContext* gl = mContext->gl;
gl->fCompressedTexSubImage2D(texImageTarget.get(), level, xOffset, yOffset, width, height, internalFormat, byteLength, view.Data());
}
void
WebGLTexture::CopyTexSubImage2D_base(TexImageTarget texImageTarget, GLint level,
TexInternalFormat internalFormat,
GLint xOffset, GLint yOffset, GLint x,
GLint y, GLsizei width, GLsizei height,
bool sub)
{
const WebGLRectangleObject* framebufferRect = mContext->CurValidReadFBRectObject();
GLsizei framebufferWidth = framebufferRect ? framebufferRect->Width() : 0;
GLsizei framebufferHeight = framebufferRect ? framebufferRect->Height() : 0;
WebGLTexImageFunc func = sub
? WebGLTexImageFunc::CopyTexSubImage
: WebGLTexImageFunc::CopyTexImage;
WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
const char* info = InfoFrom(func, dims);
// TODO: This changes with color_buffer_float. Reassess when the
// patch lands.
if (!mContext->ValidateTexImage(texImageTarget, level, internalFormat.get(),
xOffset, yOffset, 0,
width, height, 0,
0,
LOCAL_GL_NONE, LOCAL_GL_NONE,
func, dims))
{
return;
}
if (!mContext->ValidateCopyTexImage(internalFormat.get(), func, dims))
return;
if (!mContext->mBoundReadFramebuffer)
mContext->ClearBackbufferIfNeeded();
mContext->MakeContextCurrent();
gl::GLContext* gl = mContext->gl;
if (mImmutable) {
if (!sub) {
return mContext->ErrorInvalidOperation("copyTexImage2D: disallowed because the texture bound to this target has already been made immutable by texStorage2D");
}
}
TexType framebuffertype = LOCAL_GL_NONE;
if (mContext->mBoundReadFramebuffer) {
TexInternalFormat framebuffereffectiveformat = mContext->mBoundReadFramebuffer->ColorAttachment(0).EffectiveInternalFormat();
framebuffertype = TypeFromInternalFormat(framebuffereffectiveformat);
} else {
// FIXME - here we're assuming that the default framebuffer is backed by UNSIGNED_BYTE
// that might not always be true, say if we had a 16bpp default framebuffer.
framebuffertype = LOCAL_GL_UNSIGNED_BYTE;
}
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromUnsizedInternalFormatAndType(internalFormat, framebuffertype);
// this should never fail, validation happened earlier.
MOZ_ASSERT(effectiveInternalFormat != LOCAL_GL_NONE);
const bool widthOrHeightIsZero = (width == 0 || height == 0);
if (gl->WorkAroundDriverBugs() &&
sub && widthOrHeightIsZero)
{
// NV driver on Linux complains that CopyTexSubImage2D(level=0,
// xOffset=0, yOffset=2, x=0, y=0, width=0, height=0) from a 300x150 FB
// to a 0x2 texture. This a useless thing to do, but technically legal.
// NV331.38 generates INVALID_VALUE.
return mContext->DummyFramebufferOperation(info);
}
// check if the memory size of this texture may change with this call
bool sizeMayChange = !sub;
if (!sub && HasImageInfoAt(texImageTarget, level)) {
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
sizeMayChange = width != imageInfo.Width() ||
height != imageInfo.Height() ||
effectiveInternalFormat != imageInfo.EffectiveInternalFormat();
}
if (sizeMayChange)
mContext->GetAndFlushUnderlyingGLErrors();
if (CanvasUtils::CheckSaneSubrectSize(x, y, width, height, framebufferWidth, framebufferHeight)) {
if (sub)
gl->fCopyTexSubImage2D(texImageTarget.get(), level, xOffset, yOffset, x, y, width, height);
else
gl->fCopyTexImage2D(texImageTarget.get(), level, internalFormat.get(), x, y, width, height, 0);
} else {
// the rect doesn't fit in the framebuffer
// first, we initialize the texture as black
if (!sub) {
SetImageInfo(texImageTarget, level, width, height, 1,
effectiveInternalFormat,
WebGLImageDataStatus::UninitializedImageData);
if (!EnsureInitializedImageData(texImageTarget, level))
return;
}
// if we are completely outside of the framebuffer, we can exit now with our black texture
if ( x >= framebufferWidth
|| x+width <= 0
|| y >= framebufferHeight
|| y+height <= 0)
{
// we are completely outside of range, can exit now with buffer filled with zeros
return mContext->DummyFramebufferOperation(info);
}
GLint actual_x = clamped(x, 0, framebufferWidth);
GLint actual_x_plus_width = clamped(x + width, 0, framebufferWidth);
GLsizei actual_width = actual_x_plus_width - actual_x;
GLint actual_xOffset = xOffset + actual_x - x;
GLint actual_y = clamped(y, 0, framebufferHeight);
GLint actual_y_plus_height = clamped(y + height, 0, framebufferHeight);
GLsizei actual_height = actual_y_plus_height - actual_y;
GLint actual_yOffset = yOffset + actual_y - y;
gl->fCopyTexSubImage2D(texImageTarget.get(), level, actual_xOffset, actual_yOffset, actual_x, actual_y, actual_width, actual_height);
}
if (sizeMayChange) {
GLenum error = mContext->GetAndFlushUnderlyingGLErrors();
if (error) {
mContext->GenerateWarning("copyTexImage2D generated error %s", mContext->ErrorName(error));
return;
}
}
if (!sub) {
SetImageInfo(texImageTarget, level, width, height, 1,
effectiveInternalFormat,
WebGLImageDataStatus::InitializedImageData);
}
}
void
WebGLTexture::CopyTexImage2D(TexImageTarget texImageTarget,
GLint level,
GLenum internalFormat,
GLint x,
GLint y,
GLsizei width,
GLsizei height,
GLint border)
{
// copyTexImage2D only generates textures with type = UNSIGNED_BYTE
const WebGLTexImageFunc func = WebGLTexImageFunc::CopyTexImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
const char funcName[] = "copyTexImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (!mContext->ValidateTexImage(texImageTarget.get(), level, internalFormat,
0, 0, 0,
width, height, 0,
border, LOCAL_GL_NONE, LOCAL_GL_NONE,
func, dims))
{
return;
}
if (!mContext->ValidateCopyTexImage(internalFormat, func, dims))
return;
if (!mContext->mBoundReadFramebuffer)
mContext->ClearBackbufferIfNeeded();
CopyTexSubImage2D_base(texImageTarget, level, internalFormat, 0, 0, x, y, width, height, false);
}
void
WebGLTexture::CopyTexSubImage2D(TexImageTarget texImageTarget,
GLint level,
GLint xOffset,
GLint yOffset,
GLint x,
GLint y,
GLsizei width,
GLsizei height)
{
switch (texImageTarget.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:
break;
default:
return mContext->ErrorInvalidEnumInfo("copyTexSubImage2D: target", texImageTarget.get());
}
if (level < 0)
return mContext->ErrorInvalidValue("copyTexSubImage2D: level may not be negative");
GLsizei maxTextureSize = mContext->MaxTextureSizeForTarget(TexImageTargetToTexTarget(texImageTarget));
if (!(maxTextureSize >> level))
return mContext->ErrorInvalidValue("copyTexSubImage2D: 2^level exceeds maximum texture size");
if (width < 0 || height < 0)
return mContext->ErrorInvalidValue("copyTexSubImage2D: width and height may not be negative");
if (xOffset < 0 || yOffset < 0)
return mContext->ErrorInvalidValue("copyTexSubImage2D: xOffset and yOffset may not be negative");
if (!HasImageInfoAt(texImageTarget, level))
return mContext->ErrorInvalidOperation("copyTexSubImage2D: no texture image previously defined for this level and face");
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
GLsizei texWidth = imageInfo.Width();
GLsizei texHeight = imageInfo.Height();
if (xOffset + width > texWidth || xOffset + width < 0)
return mContext->ErrorInvalidValue("copyTexSubImage2D: xOffset+width is too large");
if (yOffset + height > texHeight || yOffset + height < 0)
return mContext->ErrorInvalidValue("copyTexSubImage2D: yOffset+height is too large");
if (!mContext->mBoundReadFramebuffer)
mContext->ClearBackbufferIfNeeded();
if (imageInfo.HasUninitializedImageData()) {
bool coversWholeImage = xOffset == 0 &&
yOffset == 0 &&
width == texWidth &&
height == texHeight;
if (coversWholeImage) {
SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
if (!EnsureInitializedImageData(texImageTarget, level))
return;
}
}
TexInternalFormat internalFormat;
TexType type;
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(imageInfo.EffectiveInternalFormat(),
&internalFormat, &type);
return CopyTexSubImage2D_base(texImageTarget, level, internalFormat, xOffset, yOffset, x, y, width, height, true);
}
GLenum
WebGLTexture::CheckedTexImage2D(TexImageTarget texImageTarget,
GLint level,
TexInternalFormat internalFormat,
GLsizei width,
GLsizei height,
GLint border,
TexFormat unpackFormat,
TexType unpackType,
const GLvoid* data)
{
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromInternalFormatAndType(internalFormat, unpackType);
bool sizeMayChange = true;
if (HasImageInfoAt(texImageTarget, level)) {
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
sizeMayChange = width != imageInfo.Width() ||
height != imageInfo.Height() ||
effectiveInternalFormat != imageInfo.EffectiveInternalFormat();
}
gl::GLContext* gl = mContext->gl;
// Convert to format and type required by OpenGL 'driver'.
GLenum driverType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
effectiveInternalFormat,
&driverInternalFormat,
&driverFormat,
&driverType);
if (sizeMayChange) {
mContext->GetAndFlushUnderlyingGLErrors();
}
gl->fTexImage2D(texImageTarget.get(), level, driverInternalFormat, width, height, border, driverFormat, driverType, data);
if (effectiveInternalFormat != driverInternalFormat)
SetLegacyTextureSwizzle(gl, texImageTarget.get(), internalFormat.get());
GLenum error = LOCAL_GL_NO_ERROR;
if (sizeMayChange) {
error = mContext->GetAndFlushUnderlyingGLErrors();
}
return error;
}
void
WebGLTexture::TexImage2D_base(TexImageTarget texImageTarget, GLint level,
GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei srcStrideOrZero,
GLint border,
GLenum unpackFormat,
GLenum unpackType,
void* data, uint32_t byteLength,
js::Scalar::Type jsArrayType,
WebGLTexelFormat srcFormat, bool srcPremultiplied)
{
const WebGLTexImageFunc func = WebGLTexImageFunc::TexImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
if (unpackType == LOCAL_GL_HALF_FLOAT_OES) {
unpackType = LOCAL_GL_HALF_FLOAT;
}
if (!mContext->ValidateTexImage(texImageTarget, level, internalFormat,
0, 0, 0,
width, height, 0,
border, unpackFormat, unpackType, func, dims))
{
return;
}
const bool isDepthTexture = unpackFormat == LOCAL_GL_DEPTH_COMPONENT ||
unpackFormat == LOCAL_GL_DEPTH_STENCIL;
if (isDepthTexture && !mContext->IsWebGL2()) {
if (data != nullptr || level != 0)
return mContext->ErrorInvalidOperation("texImage2D: "
"with format of DEPTH_COMPONENT or DEPTH_STENCIL, "
"data must be nullptr, "
"level must be zero");
}
if (!mContext->ValidateTexInputData(unpackType, jsArrayType, func, dims))
return;
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromInternalFormatAndType(internalFormat, unpackType);
if (effectiveInternalFormat == LOCAL_GL_NONE) {
return mContext->ErrorInvalidOperation("texImage2D: bad combination of internalFormat and type");
}
size_t srcTexelSize = size_t(-1);
if (srcFormat == WebGLTexelFormat::Auto) {
// we need to find the exact sized format of the source data. Slightly abusing
// EffectiveInternalFormatFromInternalFormatAndType for that purpose. Really, an unsized source format
// is the same thing as an unsized internalFormat.
TexInternalFormat effectiveSourceFormat =
EffectiveInternalFormatFromInternalFormatAndType(unpackFormat, unpackType);
MOZ_ASSERT(effectiveSourceFormat != LOCAL_GL_NONE); // should have validated format/type combo earlier
const size_t srcbitsPerTexel = GetBitsPerTexel(effectiveSourceFormat);
MOZ_ASSERT((srcbitsPerTexel % 8) == 0); // should not have compressed formats here.
srcTexelSize = srcbitsPerTexel / 8;
} else {
srcTexelSize = WebGLTexelConversions::TexelBytesForFormat(srcFormat);
}
CheckedUint32 checked_neededByteLength =
mContext->GetImageSize(height, width, 1, srcTexelSize, mContext->mPixelStoreUnpackAlignment);
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * srcTexelSize;
CheckedUint32 checked_alignedRowSize =
RoundedToNextMultipleOf(checked_plainRowSize.value(), mContext->mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return mContext->ErrorInvalidOperation("texImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (byteLength && byteLength < bytesNeeded)
return mContext->ErrorInvalidOperation("texImage2D: not enough data for operation (need %d, have %d)",
bytesNeeded, byteLength);
if (mImmutable) {
return mContext->ErrorInvalidOperation(
"texImage2D: disallowed because the texture "
"bound to this target has already been made immutable by texStorage2D");
}
mContext->MakeContextCurrent();
nsAutoArrayPtr<uint8_t> convertedData;
void* pixels = nullptr;
WebGLImageDataStatus imageInfoStatusIfSuccess = WebGLImageDataStatus::UninitializedImageData;
WebGLTexelFormat dstFormat = GetWebGLTexelFormat(effectiveInternalFormat);
WebGLTexelFormat actualSrcFormat = srcFormat == WebGLTexelFormat::Auto ? dstFormat : srcFormat;
if (byteLength) {
size_t bitsPerTexel = GetBitsPerTexel(effectiveInternalFormat);
MOZ_ASSERT((bitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t dstTexelSize = bitsPerTexel / 8;
size_t srcStride = srcStrideOrZero ? srcStrideOrZero : checked_alignedRowSize.value();
size_t dstPlainRowSize = dstTexelSize * width;
size_t unpackAlignment = mContext->mPixelStoreUnpackAlignment;
size_t dstStride = ((dstPlainRowSize + unpackAlignment-1) / unpackAlignment) * unpackAlignment;
if (actualSrcFormat == dstFormat &&
srcPremultiplied == mContext->mPixelStorePremultiplyAlpha &&
srcStride == dstStride &&
!mContext->mPixelStoreFlipY)
{
// no conversion, no flipping, so we avoid copying anything and just pass the source pointer
pixels = data;
}
else
{
size_t convertedDataSize = height * dstStride;
convertedData = new (fallible) uint8_t[convertedDataSize];
if (!convertedData) {
mContext->ErrorOutOfMemory("texImage2D: Ran out of memory when allocating"
" a buffer for doing format conversion.");
return;
}
if (!mContext->ConvertImage(width, height, srcStride, dstStride,
static_cast<uint8_t*>(data), convertedData,
actualSrcFormat, srcPremultiplied,
dstFormat, mContext->mPixelStorePremultiplyAlpha, dstTexelSize))
{
return mContext->ErrorInvalidOperation("texImage2D: Unsupported texture format conversion");
}
pixels = reinterpret_cast<void*>(convertedData.get());
}
imageInfoStatusIfSuccess = WebGLImageDataStatus::InitializedImageData;
}
GLenum error = CheckedTexImage2D(texImageTarget, level, internalFormat, width,
height, border, unpackFormat, unpackType, pixels);
if (error) {
mContext->GenerateWarning("texImage2D generated error %s", mContext->ErrorName(error));
return;
}
// in all of the code paths above, we should have either initialized data,
// or allocated data and left it uninitialized, but in any case we shouldn't
// have NoImageData at this point.
MOZ_ASSERT(imageInfoStatusIfSuccess != WebGLImageDataStatus::NoImageData);
SetImageInfo(texImageTarget, level, width, height, 1,
effectiveInternalFormat, imageInfoStatusIfSuccess);
}
void
WebGLTexture::TexImage2D(TexImageTarget texImageTarget, GLint level,
GLenum internalFormat, GLsizei width,
GLsizei height, GLint border, GLenum unpackFormat,
GLenum unpackType, const dom::Nullable<dom::ArrayBufferView>& maybeView,
ErrorResult* const out_rv)
{
void* data;
uint32_t length;
js::Scalar::Type jsArrayType;
if (maybeView.IsNull()) {
data = nullptr;
length = 0;
jsArrayType = js::Scalar::MaxTypedArrayViewType;
} else {
const dom::ArrayBufferView& view = maybeView.Value();
view.ComputeLengthAndData();
data = view.Data();
length = view.Length();
jsArrayType = view.Type();
}
const char funcName[] = "texImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
return TexImage2D_base(texImageTarget, level, internalFormat, width, height, 0, border, unpackFormat, unpackType,
data, length, jsArrayType,
WebGLTexelFormat::Auto, false);
}
void
WebGLTexture::TexImage2D(TexImageTarget texImageTarget, GLint level,
GLenum internalFormat, GLenum unpackFormat,
GLenum unpackType, dom::ImageData* imageData, ErrorResult* const out_rv)
{
if (!imageData) {
// Spec says to generate an INVALID_VALUE error
return mContext->ErrorInvalidValue("texImage2D: null ImageData");
}
dom::Uint8ClampedArray arr;
DebugOnly<bool> inited = arr.Init(imageData->GetDataObject());
MOZ_ASSERT(inited);
arr.ComputeLengthAndData();
void* pixelData = arr.Data();
const uint32_t pixelDataLength = arr.Length();
const char funcName[] = "texImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
return TexImage2D_base(texImageTarget, level, internalFormat, imageData->Width(),
imageData->Height(), 4*imageData->Width(), 0,
unpackFormat, unpackType, pixelData, pixelDataLength, js::Scalar::MaxTypedArrayViewType,
WebGLTexelFormat::RGBA8, false);
}
void
WebGLTexture::TexImage2D(TexImageTarget texImageTarget, GLint level,
GLenum internalFormat, GLenum unpackFormat, GLenum unpackType,
dom::Element* elem, ErrorResult* out_rv)
{
const char funcName[] = "texImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (level < 0)
return mContext->ErrorInvalidValue("texImage2D: level is negative");
const int32_t maxLevel = mContext->MaxTextureLevelForTexImageTarget(texImageTarget);
if (level > maxLevel) {
mContext->ErrorInvalidValue("texImage2D: level %d is too large, max is %d",
level, maxLevel);
return;
}
// Trying to handle the video by GPU directly first
if (TexImageFromVideoElement(texImageTarget, level, internalFormat,
unpackFormat, unpackType, elem))
{
return;
}
RefPtr<gfx::DataSourceSurface> data;
WebGLTexelFormat srcFormat;
nsLayoutUtils::SurfaceFromElementResult res = mContext->SurfaceFromElement(elem);
*out_rv = mContext->SurfaceFromElementResultToImageSurface(res, data, &srcFormat);
if (out_rv->Failed() || !data)
return;
gfx::IntSize size = data->GetSize();
uint32_t byteLength = data->Stride() * size.height;
return TexImage2D_base(texImageTarget, level, internalFormat,
size.width, size.height, data->Stride(), 0,
unpackFormat, unpackType, data->GetData(), byteLength,
js::Scalar::MaxTypedArrayViewType, srcFormat,
res.mIsPremultiplied);
}
void
WebGLTexture::TexSubImage2D_base(TexImageTarget texImageTarget, GLint level,
GLint xOffset, GLint yOffset,
GLsizei width, GLsizei height, GLsizei srcStrideOrZero,
GLenum unpackFormat, GLenum unpackType,
void* data, uint32_t byteLength,
js::Scalar::Type jsArrayType,
WebGLTexelFormat srcFormat, bool srcPremultiplied)
{
const WebGLTexImageFunc func = WebGLTexImageFunc::TexSubImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex2D;
if (unpackType == LOCAL_GL_HALF_FLOAT_OES)
unpackType = LOCAL_GL_HALF_FLOAT;
const char funcName[] = "texSubImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (!HasImageInfoAt(texImageTarget, level))
return mContext->ErrorInvalidOperation("texSubImage2D: no previously defined texture image");
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
const TexInternalFormat existingEffectiveInternalFormat = imageInfo.EffectiveInternalFormat();
if (!mContext->ValidateTexImage(texImageTarget, level,
existingEffectiveInternalFormat.get(),
xOffset, yOffset, 0,
width, height, 0,
0, unpackFormat, unpackType, func, dims))
{
return;
}
if (!mContext->ValidateTexInputData(unpackType, jsArrayType, func, dims))
return;
if (unpackType != TypeFromInternalFormat(existingEffectiveInternalFormat)) {
return mContext->ErrorInvalidOperation("texSubImage2D: type differs from that of the existing image");
}
size_t srcTexelSize = size_t(-1);
if (srcFormat == WebGLTexelFormat::Auto) {
const size_t bitsPerTexel = GetBitsPerTexel(existingEffectiveInternalFormat);
MOZ_ASSERT((bitsPerTexel % 8) == 0); // should not have compressed formats here.
srcTexelSize = bitsPerTexel / 8;
} else {
srcTexelSize = WebGLTexelConversions::TexelBytesForFormat(srcFormat);
}
if (width == 0 || height == 0)
return; // ES 2.0 says it has no effect, we better return right now
CheckedUint32 checked_neededByteLength =
mContext->GetImageSize(height, width, 1, srcTexelSize, mContext->mPixelStoreUnpackAlignment);
CheckedUint32 checked_plainRowSize = CheckedUint32(width) * srcTexelSize;
CheckedUint32 checked_alignedRowSize =
RoundedToNextMultipleOf(checked_plainRowSize.value(), mContext->mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return mContext->ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (byteLength < bytesNeeded)
return mContext->ErrorInvalidOperation("texSubImage2D: not enough data for operation (need %d, have %d)", bytesNeeded, byteLength);
if (imageInfo.HasUninitializedImageData()) {
bool coversWholeImage = xOffset == 0 &&
yOffset == 0 &&
width == imageInfo.Width() &&
height == imageInfo.Height();
if (coversWholeImage) {
SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
if (!EnsureInitializedImageData(texImageTarget, level))
return;
}
}
mContext->MakeContextCurrent();
gl::GLContext* gl = mContext->gl;
size_t srcStride = srcStrideOrZero ? srcStrideOrZero : checked_alignedRowSize.value();
uint32_t dstTexelSize = GetBitsPerTexel(existingEffectiveInternalFormat) / 8;
size_t dstPlainRowSize = dstTexelSize * width;
// There are checks above to ensure that this won't overflow.
size_t dstStride = RoundedToNextMultipleOf(dstPlainRowSize, mContext->mPixelStoreUnpackAlignment).value();
void* pixels = data;
nsAutoArrayPtr<uint8_t> convertedData;
WebGLTexelFormat dstFormat = GetWebGLTexelFormat(existingEffectiveInternalFormat);
WebGLTexelFormat actualSrcFormat = srcFormat == WebGLTexelFormat::Auto ? dstFormat : srcFormat;
// no conversion, no flipping, so we avoid copying anything and just pass the source pointer
bool noConversion = (actualSrcFormat == dstFormat &&
srcPremultiplied == mContext->mPixelStorePremultiplyAlpha &&
srcStride == dstStride &&
!mContext->mPixelStoreFlipY);
if (!noConversion) {
size_t convertedDataSize = height * dstStride;
convertedData = new (fallible) uint8_t[convertedDataSize];
if (!convertedData) {
mContext->ErrorOutOfMemory("texImage2D: Ran out of memory when allocating"
" a buffer for doing format conversion.");
return;
}
if (!mContext->ConvertImage(width, height, srcStride, dstStride,
static_cast<const uint8_t*>(data), convertedData,
actualSrcFormat, srcPremultiplied,
dstFormat, mContext->mPixelStorePremultiplyAlpha, dstTexelSize))
{
return mContext->ErrorInvalidOperation("texSubImage2D: Unsupported texture format conversion");
}
pixels = reinterpret_cast<void*>(convertedData.get());
}
GLenum driverType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
existingEffectiveInternalFormat,
&driverInternalFormat,
&driverFormat,
&driverType);
gl->fTexSubImage2D(texImageTarget.get(), level, xOffset, yOffset, width, height, driverFormat, driverType, pixels);
}
void
WebGLTexture::TexSubImage2D(TexImageTarget texImageTarget, GLint level,
GLint xOffset, GLint yOffset,
GLsizei width, GLsizei height,
GLenum unpackFormat, GLenum unpackType,
const dom::Nullable<dom::ArrayBufferView>& maybeView,
ErrorResult* const out_rv)
{
if (maybeView.IsNull())
return mContext->ErrorInvalidValue("texSubImage2D: pixels must not be null!");
const dom::ArrayBufferView& view = maybeView.Value();
view.ComputeLengthAndData();
const char funcName[] = "texSubImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
return TexSubImage2D_base(texImageTarget, level, xOffset, yOffset,
width, height, 0, unpackFormat, unpackType,
view.Data(), view.Length(), view.Type(),
WebGLTexelFormat::Auto, false);
}
void
WebGLTexture::TexSubImage2D(TexImageTarget texImageTarget, GLint level,
GLint xOffset, GLint yOffset,
GLenum unpackFormat, GLenum unpackType, dom::ImageData* imageData,
ErrorResult* const out_rv)
{
if (!imageData)
return mContext->ErrorInvalidValue("texSubImage2D: pixels must not be null!");
dom::Uint8ClampedArray arr;
DebugOnly<bool> inited = arr.Init(imageData->GetDataObject());
MOZ_ASSERT(inited);
arr.ComputeLengthAndData();
return TexSubImage2D_base(texImageTarget, level, xOffset, yOffset,
imageData->Width(), imageData->Height(),
4*imageData->Width(), unpackFormat, unpackType,
arr.Data(), arr.Length(),
js::Scalar::MaxTypedArrayViewType,
WebGLTexelFormat::RGBA8, false);
}
bool
WebGLTexture::TexImageFromVideoElement(TexImageTarget texImageTarget,
GLint level, GLenum internalFormat,
GLenum unpackFormat, GLenum unpackType,
mozilla::dom::Element* elem)
{
if (unpackType == LOCAL_GL_HALF_FLOAT_OES &&
!mContext->gl->IsExtensionSupported(gl::GLContext::OES_texture_half_float))
{
unpackType = LOCAL_GL_HALF_FLOAT;
}
if (!mContext->ValidateTexImageFormatAndType(unpackFormat, unpackType,
WebGLTexImageFunc::TexImage,
WebGLTexDimensions::Tex2D))
{
return false;
}
dom::HTMLVideoElement* video = dom::HTMLVideoElement::FromContentOrNull(elem);
if (!video)
return false;
uint16_t readyState;
if (NS_SUCCEEDED(video->GetReadyState(&readyState)) &&
readyState < nsIDOMHTMLMediaElement::HAVE_CURRENT_DATA)
{
//No frame inside, just return
return false;
}
// If it doesn't have a principal, just bail
nsCOMPtr<nsIPrincipal> principal = video->GetCurrentPrincipal();
if (!principal)
return false;
mozilla::layers::ImageContainer* container = video->GetImageContainer();
if (!container)
return false;
if (video->GetCORSMode() == CORS_NONE) {
bool subsumes;
nsresult rv = mContext->mCanvasElement->NodePrincipal()->Subsumes(principal, &subsumes);
if (NS_FAILED(rv) || !subsumes) {
mContext->GenerateWarning("It is forbidden to load a WebGL texture from a cross-domain element that has not been validated with CORS. "
"See https://developer.mozilla.org/en/WebGL/Cross-Domain_Textures");
return false;
}
}
layers::AutoLockImage lockedImage(container);
layers::Image* srcImage = lockedImage.GetImage();
if (!srcImage) {
return false;
}
gl::GLContext* gl = mContext->gl;
gl->MakeCurrent();
const WebGLTexture::ImageInfo& info = ImageInfoAt(texImageTarget, 0);
bool dimensionsMatch = info.Width() == srcImage->GetSize().width &&
info.Height() == srcImage->GetSize().height;
if (!dimensionsMatch) {
// we need to allocation
gl->fTexImage2D(texImageTarget.get(), level, internalFormat,
srcImage->GetSize().width, srcImage->GetSize().height,
0, unpackFormat, unpackType, nullptr);
}
const gl::OriginPos destOrigin = mContext->mPixelStoreFlipY ? gl::OriginPos::BottomLeft
: gl::OriginPos::TopLeft;
bool ok = gl->BlitHelper()->BlitImageToTexture(srcImage,
srcImage->GetSize(),
mGLName,
texImageTarget.get(),
destOrigin);
if (ok) {
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromInternalFormatAndType(internalFormat,
unpackType);
MOZ_ASSERT(effectiveInternalFormat != LOCAL_GL_NONE);
SetImageInfo(texImageTarget, level, srcImage->GetSize().width,
srcImage->GetSize().height, 1,
effectiveInternalFormat,
WebGLImageDataStatus::InitializedImageData);
Bind(TexImageTargetToTexTarget(texImageTarget));
}
return ok;
}
void
WebGLTexture::TexSubImage2D(TexImageTarget texImageTarget, GLint level, GLint xOffset,
GLint yOffset, GLenum unpackFormat, GLenum unpackType,
dom::Element* elem, ErrorResult* const out_rv)
{
const char funcName[] = "texSubImage2D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 2, funcName))
return;
if (level < 0)
return mContext->ErrorInvalidValue("texSubImage2D: level is negative");
const int32_t maxLevel = mContext->MaxTextureLevelForTexImageTarget(texImageTarget);
if (level > maxLevel) {
mContext->ErrorInvalidValue("texSubImage2D: level %d is too large, max is %d",
level, maxLevel);
return;
}
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
const TexInternalFormat internalFormat = imageInfo.EffectiveInternalFormat();
// Trying to handle the video by GPU directly first
if (TexImageFromVideoElement(texImageTarget, level, internalFormat.get(), unpackFormat, unpackType, elem))
{
return;
}
RefPtr<gfx::DataSourceSurface> data;
WebGLTexelFormat srcFormat;
nsLayoutUtils::SurfaceFromElementResult res = mContext->SurfaceFromElement(elem);
*out_rv = mContext->SurfaceFromElementResultToImageSurface(res, data, &srcFormat);
if (out_rv->Failed() || !data)
return;
gfx::IntSize size = data->GetSize();
uint32_t byteLength = data->Stride() * size.height;
TexSubImage2D_base(texImageTarget, level, xOffset, yOffset, size.width,
size.height, data->Stride(), unpackFormat, unpackType, data->GetData(),
byteLength, js::Scalar::MaxTypedArrayViewType, srcFormat,
res.mIsPremultiplied);
}
bool
WebGLTexture::ValidateSizedInternalFormat(GLenum internalFormat, const char* info)
{
switch (internalFormat) {
// Sized Internal Formats
// https://www.khronos.org/opengles/sdk/docs/man3/html/glTexStorage2D.xhtml
case LOCAL_GL_R8:
case LOCAL_GL_R8_SNORM:
case LOCAL_GL_R16F:
case LOCAL_GL_R32F:
case LOCAL_GL_R8UI:
case LOCAL_GL_R8I:
case LOCAL_GL_R16UI:
case LOCAL_GL_R16I:
case LOCAL_GL_R32UI:
case LOCAL_GL_R32I:
case LOCAL_GL_RG8:
case LOCAL_GL_RG8_SNORM:
case LOCAL_GL_RG16F:
case LOCAL_GL_RG32F:
case LOCAL_GL_RG8UI:
case LOCAL_GL_RG8I:
case LOCAL_GL_RG16UI:
case LOCAL_GL_RG16I:
case LOCAL_GL_RG32UI:
case LOCAL_GL_RG32I:
case LOCAL_GL_RGB8:
case LOCAL_GL_SRGB8:
case LOCAL_GL_RGB565:
case LOCAL_GL_RGB8_SNORM:
case LOCAL_GL_R11F_G11F_B10F:
case LOCAL_GL_RGB9_E5:
case LOCAL_GL_RGB16F:
case LOCAL_GL_RGB32F:
case LOCAL_GL_RGB8UI:
case LOCAL_GL_RGB8I:
case LOCAL_GL_RGB16UI:
case LOCAL_GL_RGB16I:
case LOCAL_GL_RGB32UI:
case LOCAL_GL_RGB32I:
case LOCAL_GL_RGBA8:
case LOCAL_GL_SRGB8_ALPHA8:
case LOCAL_GL_RGBA8_SNORM:
case LOCAL_GL_RGB5_A1:
case LOCAL_GL_RGBA4:
case LOCAL_GL_RGB10_A2:
case LOCAL_GL_RGBA16F:
case LOCAL_GL_RGBA32F:
case LOCAL_GL_RGBA8UI:
case LOCAL_GL_RGBA8I:
case LOCAL_GL_RGB10_A2UI:
case LOCAL_GL_RGBA16UI:
case LOCAL_GL_RGBA16I:
case LOCAL_GL_RGBA32I:
case LOCAL_GL_RGBA32UI:
case LOCAL_GL_DEPTH_COMPONENT16:
case LOCAL_GL_DEPTH_COMPONENT24:
case LOCAL_GL_DEPTH_COMPONENT32F:
case LOCAL_GL_DEPTH24_STENCIL8:
case LOCAL_GL_DEPTH32F_STENCIL8:
return true;
}
if (IsCompressedTextureFormat(internalFormat))
return true;
nsCString name;
mContext->EnumName(internalFormat, &name);
mContext->ErrorInvalidEnum("%s: invalid internal format %s", info, name.get());
return false;
}
/** Validates parameters to texStorage{2D,3D} */
bool
WebGLTexture::ValidateTexStorage(TexTarget texTarget, GLsizei levels, GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
const char* info)
{
// GL_INVALID_OPERATION is generated if the texture object currently bound to target already has
// GL_TEXTURE_IMMUTABLE_FORMAT set to GL_TRUE.
if (mImmutable) {
mContext->ErrorInvalidOperation("%s: texture bound to target %s is already immutable",
info, mContext->EnumName(texTarget.get()));
return false;
}
// GL_INVALID_ENUM is generated if internalFormat is not a valid sized internal format.
if (!ValidateSizedInternalFormat(internalFormat, info))
return false;
// GL_INVALID_VALUE is generated if width, height or levels are less than 1.
if (width < 1) { mContext->ErrorInvalidValue("%s: width is < 1", info); return false; }
if (height < 1) { mContext->ErrorInvalidValue("%s: height is < 1", info); return false; }
if (depth < 1) { mContext->ErrorInvalidValue("%s: depth is < 1", info); return false; }
if (levels < 1) { mContext->ErrorInvalidValue("%s: levels is < 1", info); return false; }
// GL_INVALID_OPERATION is generated if levels is greater than floor(log2(max(width, height, depth)))+1.
if (FloorLog2(std::max(std::max(width, height), depth)) + 1 < levels) {
mContext->ErrorInvalidOperation("%s: too many levels for given texture dimensions", info);
return false;
}
return true;
}
void
WebGLTexture::TexStorage2D(TexTarget texTarget, GLsizei levels, GLenum internalFormat, GLsizei width, GLsizei height)
{
// GL_INVALID_ENUM is generated if target is not one of the accepted target enumerants.
if (texTarget != LOCAL_GL_TEXTURE_2D && texTarget != LOCAL_GL_TEXTURE_CUBE_MAP)
return mContext->ErrorInvalidEnum("texStorage2D: target is not TEXTURE_2D or TEXTURE_CUBE_MAP");
if (!ValidateTexStorage(texTarget, levels, internalFormat, width, height, 1, "texStorage2D"))
return;
gl::GLContext* gl = mContext->gl;
gl->MakeCurrent();
mContext->GetAndFlushUnderlyingGLErrors();
gl->fTexStorage2D(texTarget.get(), levels, internalFormat, width, height);
GLenum error = mContext->GetAndFlushUnderlyingGLErrors();
if (error) {
return mContext->GenerateWarning("texStorage2D generated error %s", mContext->ErrorName(error));
}
SetImmutable();
const size_t facesCount = (texTarget == LOCAL_GL_TEXTURE_2D) ? 1 : 6;
GLsizei w = width;
GLsizei h = height;
for (size_t l = 0; l < size_t(levels); l++) {
for (size_t f = 0; f < facesCount; f++) {
SetImageInfo(TexImageTargetForTargetAndFace(texTarget, f),
l, w, h, 1,
internalFormat,
WebGLImageDataStatus::UninitializedImageData);
}
w = std::max(1, w / 2);
h = std::max(1, h / 2);
}
}
void
WebGLTexture::TexStorage3D(TexTarget texTarget, GLsizei levels, GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei depth)
{
// GL_INVALID_ENUM is generated if target is not one of the accepted target enumerants.
if (texTarget != LOCAL_GL_TEXTURE_3D)
return mContext->ErrorInvalidEnum("texStorage3D: target is not TEXTURE_3D");
if (!ValidateTexStorage(texTarget, levels, internalFormat, width, height, depth, "texStorage3D"))
return;
gl::GLContext* gl = mContext->gl;
gl->MakeCurrent();
mContext->GetAndFlushUnderlyingGLErrors();
gl->fTexStorage3D(texTarget.get(), levels, internalFormat, width, height, depth);
GLenum error = mContext->GetAndFlushUnderlyingGLErrors();
if (error) {
return mContext->GenerateWarning("texStorage3D generated error %s", mContext->ErrorName(error));
}
SetImmutable();
GLsizei w = width;
GLsizei h = height;
GLsizei d = depth;
for (size_t l = 0; l < size_t(levels); l++) {
SetImageInfo(TexImageTargetForTargetAndFace(texTarget, 0),
l, w, h, d,
internalFormat,
WebGLImageDataStatus::UninitializedImageData);
w = std::max(1, w >> 1);
h = std::max(1, h >> 1);
d = std::max(1, d >> 1);
}
}
void
WebGLTexture::TexImage3D(TexImageTarget texImageTarget, GLint level, GLenum internalFormat,
GLsizei width, GLsizei height, GLsizei depth,
GLint border, GLenum unpackFormat, GLenum unpackType,
const dom::Nullable<dom::ArrayBufferView>& maybeView,
ErrorResult* const out_rv)
{
void* data;
size_t dataLength;
js::Scalar::Type jsArrayType;
if (maybeView.IsNull()) {
data = nullptr;
dataLength = 0;
jsArrayType = js::Scalar::MaxTypedArrayViewType;
} else {
const dom::ArrayBufferView& view = maybeView.Value();
view.ComputeLengthAndData();
data = view.Data();
dataLength = view.Length();
jsArrayType = view.Type();
}
const char funcName[] = "texImage3D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 3, funcName))
return;
const WebGLTexImageFunc func = WebGLTexImageFunc::TexImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex3D;
if (!mContext->ValidateTexImage(texImageTarget, level, internalFormat,
0, 0, 0,
width, height, depth,
border, unpackFormat, unpackType, func, dims))
{
return;
}
if (!mContext->ValidateTexInputData(unpackType, jsArrayType, func, dims))
return;
TexInternalFormat effectiveInternalFormat =
EffectiveInternalFormatFromInternalFormatAndType(internalFormat, unpackType);
if (effectiveInternalFormat == LOCAL_GL_NONE) {
return mContext->ErrorInvalidOperation("texImage3D: bad combination of internalFormat and unpackType");
}
// we need to find the exact sized format of the source data. Slightly abusing
// EffectiveInternalFormatFromInternalFormatAndType for that purpose. Really, an unsized source format
// is the same thing as an unsized internalFormat.
TexInternalFormat effectiveSourceFormat =
EffectiveInternalFormatFromInternalFormatAndType(unpackFormat, unpackType);
MOZ_ASSERT(effectiveSourceFormat != LOCAL_GL_NONE); // should have validated unpack format/type combo earlier
const size_t srcbitsPerTexel = GetBitsPerTexel(effectiveSourceFormat);
MOZ_ASSERT((srcbitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t srcTexelSize = srcbitsPerTexel / 8;
CheckedUint32 checked_neededByteLength =
mContext->GetImageSize(height, width, depth, srcTexelSize, mContext->mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return mContext->ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (dataLength && dataLength < bytesNeeded)
return mContext->ErrorInvalidOperation("texImage3D: not enough data for operation (need %d, have %d)",
bytesNeeded, dataLength);
if (IsImmutable()) {
return mContext->ErrorInvalidOperation(
"texImage3D: disallowed because the texture "
"bound to this target has already been made immutable by texStorage3D");
}
gl::GLContext* gl = mContext->gl;
gl->MakeCurrent();
GLenum driverUnpackType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverUnpackFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(gl,
effectiveInternalFormat,
&driverInternalFormat,
&driverUnpackFormat,
&driverUnpackType);
mContext->GetAndFlushUnderlyingGLErrors();
gl->fTexImage3D(texImageTarget.get(), level,
driverInternalFormat,
width, height, depth,
0, driverUnpackFormat, driverUnpackType,
data);
GLenum error = mContext->GetAndFlushUnderlyingGLErrors();
if (error) {
return mContext->GenerateWarning("texImage3D generated error %s", mContext->ErrorName(error));
}
SetImageInfo(texImageTarget, level,
width, height, depth,
effectiveInternalFormat,
data ? WebGLImageDataStatus::InitializedImageData
: WebGLImageDataStatus::UninitializedImageData);
}
void
WebGLTexture::TexSubImage3D(TexImageTarget texImageTarget, GLint level,
GLint xOffset, GLint yOffset, GLint zOffset,
GLsizei width, GLsizei height, GLsizei depth,
GLenum unpackFormat, GLenum unpackType,
const dom::Nullable<dom::ArrayBufferView>& maybeView,
ErrorResult* const out_rv)
{
if (maybeView.IsNull())
return mContext->ErrorInvalidValue("texSubImage3D: pixels must not be null!");
const dom::ArrayBufferView& view = maybeView.Value();
view.ComputeLengthAndData();
const char funcName[] = "texSubImage3D";
if (!DoesTargetMatchDimensions(mContext, texImageTarget, 3, funcName))
return;
const WebGLTexImageFunc func = WebGLTexImageFunc::TexSubImage;
const WebGLTexDimensions dims = WebGLTexDimensions::Tex3D;
if (!HasImageInfoAt(texImageTarget, level)) {
return mContext->ErrorInvalidOperation("texSubImage3D: no previously defined texture image");
}
const WebGLTexture::ImageInfo& imageInfo = ImageInfoAt(texImageTarget, level);
const TexInternalFormat existingEffectiveInternalFormat = imageInfo.EffectiveInternalFormat();
TexInternalFormat existingUnsizedInternalFormat = LOCAL_GL_NONE;
TexType existingType = LOCAL_GL_NONE;
UnsizedInternalFormatAndTypeFromEffectiveInternalFormat(existingEffectiveInternalFormat,
&existingUnsizedInternalFormat,
&existingType);
if (!mContext->ValidateTexImage(texImageTarget, level, existingEffectiveInternalFormat.get(),
xOffset, yOffset, zOffset,
width, height, depth,
0, unpackFormat, unpackType, func, dims))
{
return;
}
if (unpackType != existingType) {
return mContext->ErrorInvalidOperation("texSubImage3D: type differs from that of the existing image");
}
js::Scalar::Type jsArrayType = view.Type();
void* data = view.Data();
size_t dataLength = view.Length();
if (!mContext->ValidateTexInputData(unpackType, jsArrayType, func, dims))
return;
const size_t bitsPerTexel = GetBitsPerTexel(existingEffectiveInternalFormat);
MOZ_ASSERT((bitsPerTexel % 8) == 0); // should not have compressed formats here.
size_t srcTexelSize = bitsPerTexel / 8;
if (width == 0 || height == 0 || depth == 0)
return; // no effect, we better return right now
CheckedUint32 checked_neededByteLength =
mContext->GetImageSize(height, width, depth, srcTexelSize, mContext->mPixelStoreUnpackAlignment);
if (!checked_neededByteLength.isValid())
return mContext->ErrorInvalidOperation("texSubImage2D: integer overflow computing the needed buffer size");
uint32_t bytesNeeded = checked_neededByteLength.value();
if (dataLength < bytesNeeded)
return mContext->ErrorInvalidOperation("texSubImage2D: not enough data for operation (need %d, have %d)", bytesNeeded, dataLength);
if (imageInfo.HasUninitializedImageData()) {
bool coversWholeImage = xOffset == 0 &&
yOffset == 0 &&
zOffset == 0 &&
width == imageInfo.Width() &&
height == imageInfo.Height() &&
depth == imageInfo.Depth();
if (coversWholeImage) {
SetImageDataStatus(texImageTarget, level, WebGLImageDataStatus::InitializedImageData);
} else {
if (!EnsureInitializedImageData(texImageTarget, level))
return;
}
}
GLenum driverUnpackType = LOCAL_GL_NONE;
GLenum driverInternalFormat = LOCAL_GL_NONE;
GLenum driverUnpackFormat = LOCAL_GL_NONE;
DriverFormatsFromEffectiveInternalFormat(mContext->gl,
existingEffectiveInternalFormat,
&driverInternalFormat,
&driverUnpackFormat,
&driverUnpackType);
mContext->MakeContextCurrent();
mContext->gl->fTexSubImage3D(texImageTarget.get(), level,
xOffset, yOffset, zOffset,
width, height, depth,
driverUnpackFormat, driverUnpackType, data);
}
} // namespace mozilla
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