mirror of
https://github.com/mozilla/gecko-dev.git
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1227 lines
40 KiB
C++
1227 lines
40 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#include "WebGLTexture.h"
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#include <algorithm>
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#include "GLContext.h"
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#include "mozilla/dom/WebGLRenderingContextBinding.h"
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#include "mozilla/gfx/Logging.h"
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#include "mozilla/MathAlgorithms.h"
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#include "mozilla/Scoped.h"
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#include "mozilla/Unused.h"
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#include "ScopedGLHelpers.h"
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#include "WebGLContext.h"
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#include "WebGLContextUtils.h"
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#include "WebGLFramebuffer.h"
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#include "WebGLSampler.h"
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#include "WebGLTexelConversions.h"
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namespace mozilla {
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/*static*/ const WebGLTexture::ImageInfo WebGLTexture::ImageInfo::kUndefined;
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////////////////////////////////////////
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template <typename T>
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static inline T&
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Mutable(const T& x)
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{
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return const_cast<T&>(x);
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}
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void
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WebGLTexture::ImageInfo::Clear(const char* funcName)
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{
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if (!IsDefined())
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return;
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OnRespecify(funcName);
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Mutable(mFormat) = LOCAL_GL_NONE;
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Mutable(mWidth) = 0;
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Mutable(mHeight) = 0;
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Mutable(mDepth) = 0;
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MOZ_ASSERT(!IsDefined());
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}
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void
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WebGLTexture::ImageInfo::Set(const char* funcName, const ImageInfo& a)
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{
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MOZ_ASSERT(a.IsDefined());
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Mutable(mFormat) = a.mFormat;
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Mutable(mWidth) = a.mWidth;
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Mutable(mHeight) = a.mHeight;
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Mutable(mDepth) = a.mDepth;
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mIsDataInitialized = a.mIsDataInitialized;
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// But *don't* transfer mAttachPoints!
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MOZ_ASSERT(a.mAttachPoints.empty());
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OnRespecify(funcName);
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}
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bool
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WebGLTexture::ImageInfo::IsPowerOfTwo() const
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{
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return mozilla::IsPowerOfTwo(mWidth) &&
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mozilla::IsPowerOfTwo(mHeight) &&
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mozilla::IsPowerOfTwo(mDepth);
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}
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void
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WebGLTexture::ImageInfo::AddAttachPoint(WebGLFBAttachPoint* attachPoint)
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{
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const auto pair = mAttachPoints.insert(attachPoint);
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DebugOnly<bool> didInsert = pair.second;
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MOZ_ASSERT(didInsert);
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}
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void
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WebGLTexture::ImageInfo::RemoveAttachPoint(WebGLFBAttachPoint* attachPoint)
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{
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DebugOnly<size_t> numElemsErased = mAttachPoints.erase(attachPoint);
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MOZ_ASSERT_IF(IsDefined(), numElemsErased == 1);
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}
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void
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WebGLTexture::ImageInfo::OnRespecify(const char* funcName) const
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{
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for (auto cur : mAttachPoints) {
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cur->OnBackingStoreRespecified(funcName);
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}
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}
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size_t
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WebGLTexture::ImageInfo::MemoryUsage() const
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{
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if (!IsDefined())
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return 0;
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const auto bytesPerTexel = mFormat->format->estimatedBytesPerPixel;
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return size_t(mWidth) * size_t(mHeight) * size_t(mDepth) * bytesPerTexel;
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}
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void
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WebGLTexture::ImageInfo::SetIsDataInitialized(bool isDataInitialized, WebGLTexture* tex)
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{
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MOZ_ASSERT(tex);
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MOZ_ASSERT(this >= &tex->mImageInfoArr[0]);
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MOZ_ASSERT(this < &tex->mImageInfoArr[kMaxLevelCount * kMaxFaceCount]);
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mIsDataInitialized = isDataInitialized;
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tex->InvalidateResolveCache();
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}
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////////////////////////////////////////
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JSObject*
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WebGLTexture::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto) {
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return dom::WebGLTextureBinding::Wrap(cx, this, givenProto);
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}
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WebGLTexture::WebGLTexture(WebGLContext* webgl, GLuint tex)
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: WebGLRefCountedObject(webgl)
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, mGLName(tex)
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, mTarget(LOCAL_GL_NONE)
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, mFaceCount(0)
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, mMinFilter(LOCAL_GL_NEAREST_MIPMAP_LINEAR)
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, mMagFilter(LOCAL_GL_LINEAR)
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, mWrapS(LOCAL_GL_REPEAT)
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, mWrapT(LOCAL_GL_REPEAT)
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, mImmutable(false)
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, mImmutableLevelCount(0)
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, mBaseMipmapLevel(0)
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, mMaxMipmapLevel(1000)
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, mTexCompareMode(LOCAL_GL_NONE)
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, mIsResolved(false)
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, mResolved_Swizzle(nullptr)
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{
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mContext->mTextures.insertBack(this);
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}
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void
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WebGLTexture::Delete()
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{
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const char funcName[] = "WebGLTexture::Delete";
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for (auto& cur : mImageInfoArr) {
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cur.Clear(funcName);
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}
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mContext->MakeContextCurrent();
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mContext->gl->fDeleteTextures(1, &mGLName);
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LinkedListElement<WebGLTexture>::removeFrom(mContext->mTextures);
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}
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size_t
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WebGLTexture::MemoryUsage() const
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{
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if (IsDeleted())
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return 0;
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size_t accum = 0;
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for (const auto& cur : mImageInfoArr) {
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accum += cur.MemoryUsage();
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}
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return accum;
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}
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void
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WebGLTexture::SetImageInfo(const char* funcName, ImageInfo* target,
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const ImageInfo& newInfo)
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{
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target->Set(funcName, newInfo);
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InvalidateResolveCache();
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}
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void
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WebGLTexture::SetImageInfosAtLevel(const char* funcName, uint32_t level,
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const ImageInfo& newInfo)
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{
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for (uint8_t i = 0; i < mFaceCount; i++) {
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ImageInfoAtFace(i, level).Set(funcName, newInfo);
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}
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InvalidateResolveCache();
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}
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bool
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WebGLTexture::IsMipmapComplete(const char* funcName, uint32_t texUnit,
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bool* const out_initFailed)
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{
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*out_initFailed = false;
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MOZ_ASSERT(DoesMinFilterRequireMipmap());
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// GLES 3.0.4, p161
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uint32_t maxLevel;
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if (!MaxEffectiveMipmapLevel(texUnit, &maxLevel))
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return false;
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// "* `level_base <= level_max`"
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if (mBaseMipmapLevel > maxLevel)
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return false;
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// Make a copy so we can modify it.
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const ImageInfo& baseImageInfo = BaseImageInfo();
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// Reference dimensions based on the current level.
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uint32_t refWidth = baseImageInfo.mWidth;
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uint32_t refHeight = baseImageInfo.mHeight;
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uint32_t refDepth = baseImageInfo.mDepth;
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MOZ_ASSERT(refWidth && refHeight && refDepth);
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for (uint32_t level = mBaseMipmapLevel; level <= maxLevel; level++) {
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if (!EnsureLevelInitialized(funcName, level)) {
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*out_initFailed = true;
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return false;
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}
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// "A cube map texture is mipmap complete if each of the six texture images,
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// considered individually, is mipmap complete."
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for (uint8_t face = 0; face < mFaceCount; face++) {
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const ImageInfo& cur = ImageInfoAtFace(face, level);
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// "* The set of mipmap arrays `level_base` through `q` (where `q` is defined
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// the "Mipmapping" discussion of section 3.8.10) were each specified with
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// the same effective internal format."
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// "* The dimensions of the arrays follow the sequence described in the
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// "Mipmapping" discussion of section 3.8.10."
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if (cur.mWidth != refWidth ||
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cur.mHeight != refHeight ||
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cur.mDepth != refDepth ||
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cur.mFormat != baseImageInfo.mFormat)
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{
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return false;
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}
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}
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// GLES 3.0.4, p158:
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// "[...] until the last array is reached with dimension 1 x 1 x 1."
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if (mTarget == LOCAL_GL_TEXTURE_3D) {
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if (refWidth == 1 &&
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refHeight == 1 &&
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refDepth == 1)
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{
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break;
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}
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refDepth = std::max(uint32_t(1), refDepth / 2);
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} else {
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// TEXTURE_2D_ARRAY may have depth != 1, but that's normal.
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if (refWidth == 1 &&
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refHeight == 1)
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{
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break;
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}
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}
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refWidth = std::max(uint32_t(1), refWidth / 2);
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refHeight = std::max(uint32_t(1), refHeight / 2);
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}
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return true;
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}
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bool
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WebGLTexture::IsCubeComplete() const
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{
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// GLES 3.0.4, p161
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// "[...] a cube map texture is cube complete if the following conditions all hold
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// true:
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// * The `level_base` arrays of each of the six texture images making up the cube map
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// have identical, positive, and square dimensions.
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// * The `level_base` arrays were each specified with the same effective internal
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// format."
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// Note that "cube complete" does not imply "mipmap complete".
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const ImageInfo& reference = BaseImageInfo();
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if (!reference.IsDefined())
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return false;
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auto refWidth = reference.mWidth;
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auto refFormat = reference.mFormat;
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for (uint8_t face = 0; face < mFaceCount; face++) {
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const ImageInfo& cur = ImageInfoAtFace(face, mBaseMipmapLevel);
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if (!cur.IsDefined())
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return false;
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MOZ_ASSERT(cur.mDepth == 1);
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if (cur.mFormat != refFormat || // Check effective formats.
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cur.mWidth != refWidth || // Check both width and height against refWidth to
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cur.mHeight != refWidth) // to enforce positive and square dimensions.
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{
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return false;
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}
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}
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return true;
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}
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bool
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WebGLTexture::IsComplete(const char* funcName, uint32_t texUnit,
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const char** const out_reason, bool* const out_initFailed)
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{
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*out_initFailed = false;
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if (!EnsureLevelInitialized(funcName, mBaseMipmapLevel)) {
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*out_initFailed = true;
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return false;
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}
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// Texture completeness is established at GLES 3.0.4, p160-161.
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// "[A] texture is complete unless any of the following conditions hold true:"
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// "* Any dimension of the `level_base` array is not positive."
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const ImageInfo& baseImageInfo = BaseImageInfo();
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if (!baseImageInfo.IsDefined()) {
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// In case of undefined texture image, we don't print any message because this is
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// a very common and often legitimate case (asynchronous texture loading).
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*out_reason = nullptr;
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return false;
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}
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if (!baseImageInfo.mWidth || !baseImageInfo.mHeight || !baseImageInfo.mDepth) {
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*out_reason = "The dimensions of `level_base` are not all positive.";
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return false;
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}
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// "* The texture is a cube map texture, and is not cube complete."
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if (IsCubeMap() && !IsCubeComplete()) {
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*out_reason = "Cubemaps must be \"cube complete\".";
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return false;
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}
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WebGLSampler* sampler = mContext->mBoundSamplers[texUnit];
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TexMinFilter minFilter = sampler ? sampler->mMinFilter : mMinFilter;
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TexMagFilter magFilter = sampler ? sampler->mMagFilter : mMagFilter;
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// "* The minification filter requires a mipmap (is neither NEAREST nor LINEAR) and
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// the texture is not mipmap complete."
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const bool requiresMipmap = (minFilter != LOCAL_GL_NEAREST &&
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minFilter != LOCAL_GL_LINEAR);
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if (requiresMipmap && !IsMipmapComplete(funcName, texUnit, out_initFailed)) {
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if (*out_initFailed)
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return false;
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*out_reason = "Because the minification filter requires mipmapping, the texture"
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" must be \"mipmap complete\".";
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return false;
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}
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const bool isMinFilteringNearest = (minFilter == LOCAL_GL_NEAREST ||
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minFilter == LOCAL_GL_NEAREST_MIPMAP_NEAREST);
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const bool isMagFilteringNearest = (magFilter == LOCAL_GL_NEAREST);
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const bool isFilteringNearestOnly = (isMinFilteringNearest && isMagFilteringNearest);
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if (!isFilteringNearestOnly) {
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auto formatUsage = baseImageInfo.mFormat;
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auto format = formatUsage->format;
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bool isFilterable = formatUsage->isFilterable;
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// "* The effective internal format specified for the texture arrays is a sized
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// internal depth or depth and stencil format, the value of
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// TEXTURE_COMPARE_MODE is NONE[1], and either the magnification filter is not
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// NEAREST, or the minification filter is neither NEAREST nor
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// NEAREST_MIPMAP_NEAREST."
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// [1]: This sounds suspect, but is explicitly noted in the change log for GLES
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// 3.0.1:
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// "* Clarify that a texture is incomplete if it has a depth component, no
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// shadow comparison, and linear filtering (also Bug 9481)."
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if (format->d && mTexCompareMode != LOCAL_GL_NONE) {
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isFilterable = true;
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}
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// "* The effective internal format specified for the texture arrays is a sized
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// internal color format that is not texture-filterable, and either the
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// magnification filter is not NEAREST or the minification filter is neither
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// NEAREST nor NEAREST_MIPMAP_NEAREST."
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// Since all (GLES3) unsized color formats are filterable just like their sized
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// equivalents, we don't have to care whether its sized or not.
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if (!isFilterable) {
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*out_reason = "Because minification or magnification filtering is not NEAREST"
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" or NEAREST_MIPMAP_NEAREST, and the texture's format must be"
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" \"texture-filterable\".";
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return false;
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}
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}
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// Texture completeness is effectively (though not explicitly) amended for GLES2 by
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// the "Texture Access" section under $3.8 "Fragment Shaders". This also applies to
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// vertex shaders, as noted on GLES 2.0.25, p41.
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if (!mContext->IsWebGL2()) {
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// GLES 2.0.25, p87-88:
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// "Calling a sampler from a fragment shader will return (R,G,B,A)=(0,0,0,1) if
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// any of the following conditions are true:"
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// "* A two-dimensional sampler is called, the minification filter is one that
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// requires a mipmap[...], and the sampler's associated texture object is not
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// complete[.]"
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// (already covered)
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// "* A two-dimensional sampler is called, the minification filter is not one that
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// requires a mipmap (either NEAREST nor[sic] LINEAR), and either dimension of
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// the level zero array of the associated texture object is not positive."
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// (already covered)
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// "* A two-dimensional sampler is called, the corresponding texture image is a
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// non-power-of-two image[...], and either the texture wrap mode is not
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// CLAMP_TO_EDGE, or the minification filter is neither NEAREST nor LINEAR."
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// "* A cube map sampler is called, any of the corresponding texture images are
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// non-power-of-two images, and either the texture wrap mode is not
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// CLAMP_TO_EDGE, or the minification filter is neither NEAREST nor LINEAR."
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if (!baseImageInfo.IsPowerOfTwo()) {
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TexWrap wrapS = sampler ? sampler->mWrapS : mWrapS;
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TexWrap wrapT = sampler ? sampler->mWrapT : mWrapT;
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// "either the texture wrap mode is not CLAMP_TO_EDGE"
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if (wrapS != LOCAL_GL_CLAMP_TO_EDGE ||
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wrapT != LOCAL_GL_CLAMP_TO_EDGE)
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{
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*out_reason = "Non-power-of-two textures must have a wrap mode of"
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" CLAMP_TO_EDGE.";
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return false;
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}
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// "or the minification filter is neither NEAREST nor LINEAR"
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if (requiresMipmap) {
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*out_reason = "Mipmapping requires power-of-two textures.";
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return false;
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}
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}
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// "* A cube map sampler is called, and either the corresponding cube map texture
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// image is not cube complete, or TEXTURE_MIN_FILTER is one that requires a
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// mipmap and the texture is not mipmap cube complete."
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// (already covered)
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}
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return true;
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}
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bool
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WebGLTexture::MaxEffectiveMipmapLevel(uint32_t texUnit, uint32_t* const out) const
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{
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WebGLSampler* sampler = mContext->mBoundSamplers[texUnit];
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TexMinFilter minFilter = sampler ? sampler->mMinFilter : mMinFilter;
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if (minFilter == LOCAL_GL_NEAREST ||
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minFilter == LOCAL_GL_LINEAR)
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{
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// No extra mips used.
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*out = mBaseMipmapLevel;
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return true;
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}
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const auto& imageInfo = BaseImageInfo();
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if (!imageInfo.IsDefined())
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return false;
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uint32_t maxLevelBySize = mBaseMipmapLevel + imageInfo.PossibleMipmapLevels() - 1;
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*out = std::min<uint32_t>(maxLevelBySize, mMaxMipmapLevel);
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return true;
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}
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bool
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WebGLTexture::GetFakeBlackType(const char* funcName, uint32_t texUnit,
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FakeBlackType* const out_fakeBlack)
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{
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const char* incompleteReason;
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bool initFailed = false;
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if (!IsComplete(funcName, texUnit, &incompleteReason, &initFailed)) {
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if (initFailed) {
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mContext->ErrorOutOfMemory("%s: Failed to initialize texture data.",
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funcName);
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return false; // The world just exploded.
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}
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if (incompleteReason) {
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mContext->GenerateWarning("%s: Active texture %u for target 0x%04x is"
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" 'incomplete', and will be rendered as"
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" RGBA(0,0,0,1), as per the GLES 2.0.24 $3.8.2: %s",
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funcName, texUnit, mTarget.get(),
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incompleteReason);
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}
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*out_fakeBlack = FakeBlackType::RGBA0001;
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return true;
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}
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*out_fakeBlack = FakeBlackType::None;
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return true;
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}
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static void
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SetSwizzle(gl::GLContext* gl, TexTarget target, const GLint* swizzle)
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{
|
|
static const GLint kNoSwizzle[4] = { LOCAL_GL_RED, LOCAL_GL_GREEN, LOCAL_GL_BLUE,
|
|
LOCAL_GL_ALPHA };
|
|
if (!swizzle) {
|
|
swizzle = kNoSwizzle;
|
|
} else if (!gl->IsSupported(gl::GLFeature::texture_swizzle)) {
|
|
MOZ_CRASH("GFX: Needs swizzle feature to swizzle!");
|
|
}
|
|
|
|
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_R, swizzle[0]);
|
|
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_G, swizzle[1]);
|
|
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_B, swizzle[2]);
|
|
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_SWIZZLE_A, swizzle[3]);
|
|
}
|
|
|
|
bool
|
|
WebGLTexture::ResolveForDraw(const char* funcName, uint32_t texUnit,
|
|
FakeBlackType* const out_fakeBlack)
|
|
{
|
|
if (!mIsResolved) {
|
|
if (!GetFakeBlackType(funcName, texUnit, &mResolved_FakeBlack))
|
|
return false;
|
|
|
|
// Check which swizzle we should use. Since the texture must be complete at this
|
|
// point, just grab the format off any valid image.
|
|
const GLint* newSwizzle = nullptr;
|
|
if (mResolved_FakeBlack == FakeBlackType::None) {
|
|
const auto& cur = ImageInfoAtFace(0, mBaseMipmapLevel);
|
|
newSwizzle = cur.mFormat->textureSwizzleRGBA;
|
|
}
|
|
|
|
// Only set the swizzle if it changed since last time we did it.
|
|
if (newSwizzle != mResolved_Swizzle) {
|
|
mResolved_Swizzle = newSwizzle;
|
|
|
|
// Set the new swizzle!
|
|
mContext->gl->fActiveTexture(LOCAL_GL_TEXTURE0 + texUnit);
|
|
SetSwizzle(mContext->gl, mTarget, mResolved_Swizzle);
|
|
mContext->gl->fActiveTexture(LOCAL_GL_TEXTURE0 + mContext->mActiveTexture);
|
|
}
|
|
|
|
mIsResolved = true;
|
|
}
|
|
|
|
*out_fakeBlack = mResolved_FakeBlack;
|
|
return true;
|
|
}
|
|
|
|
bool
|
|
WebGLTexture::EnsureImageDataInitialized(const char* funcName, TexImageTarget target,
|
|
uint32_t level)
|
|
{
|
|
auto& imageInfo = ImageInfoAt(target, level);
|
|
if (!imageInfo.IsDefined())
|
|
return true;
|
|
|
|
if (imageInfo.IsDataInitialized())
|
|
return true;
|
|
|
|
return InitializeImageData(funcName, target, level);
|
|
}
|
|
|
|
bool
|
|
WebGLTexture::EnsureLevelInitialized(const char* funcName, uint32_t level)
|
|
{
|
|
if (mTarget != LOCAL_GL_TEXTURE_CUBE_MAP)
|
|
return EnsureImageDataInitialized(funcName, mTarget.get(), level);
|
|
|
|
for (GLenum texImageTarget = LOCAL_GL_TEXTURE_CUBE_MAP_POSITIVE_X;
|
|
texImageTarget <= LOCAL_GL_TEXTURE_CUBE_MAP_NEGATIVE_Z;
|
|
++texImageTarget)
|
|
{
|
|
if (!EnsureImageDataInitialized(funcName, texImageTarget, level))
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|
|
static void
|
|
ZeroANGLEDepthTexture(WebGLContext* webgl, GLuint tex,
|
|
const webgl::FormatUsageInfo* usage, uint32_t width,
|
|
uint32_t height)
|
|
{
|
|
const auto& format = usage->format;
|
|
GLenum attachPoint = 0;
|
|
GLbitfield clearBits = 0;
|
|
|
|
if (format->d) {
|
|
attachPoint = LOCAL_GL_DEPTH_ATTACHMENT;
|
|
clearBits |= LOCAL_GL_DEPTH_BUFFER_BIT;
|
|
}
|
|
|
|
if (format->s) {
|
|
attachPoint = (format->d ? LOCAL_GL_DEPTH_STENCIL_ATTACHMENT
|
|
: LOCAL_GL_STENCIL_ATTACHMENT);
|
|
clearBits |= LOCAL_GL_STENCIL_BUFFER_BIT;
|
|
}
|
|
|
|
MOZ_RELEASE_ASSERT(attachPoint && clearBits, "GFX: No bits cleared.");
|
|
|
|
////
|
|
const auto& gl = webgl->gl;
|
|
MOZ_ASSERT(gl->IsCurrent());
|
|
|
|
gl::ScopedFramebuffer scopedFB(gl);
|
|
const gl::ScopedBindFramebuffer scopedBindFB(gl, scopedFB.FB());
|
|
|
|
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, attachPoint, LOCAL_GL_TEXTURE_2D,
|
|
tex, 0);
|
|
|
|
const auto& status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
|
|
MOZ_RELEASE_ASSERT(status == LOCAL_GL_FRAMEBUFFER_COMPLETE);
|
|
|
|
////
|
|
|
|
const bool fakeNoAlpha = false;
|
|
webgl->ForceClearFramebufferWithDefaultValues(clearBits, fakeNoAlpha);
|
|
}
|
|
|
|
static bool
|
|
ZeroTextureData(WebGLContext* webgl, const char* funcName, GLuint tex,
|
|
TexImageTarget target, uint32_t level,
|
|
const webgl::FormatUsageInfo* usage, uint32_t width, uint32_t height,
|
|
uint32_t depth)
|
|
{
|
|
// This has two usecases:
|
|
// 1. Lazy zeroing of uninitialized textures:
|
|
// a. Before draw, when FakeBlack isn't viable. (TexStorage + Draw*)
|
|
// b. Before partial upload. (TexStorage + TexSubImage)
|
|
// 2. Zero subrects from out-of-bounds blits. (CopyTex(Sub)Image)
|
|
|
|
// We have no sympathy for any of these cases.
|
|
|
|
// "Doctor, it hurts when I do this!" "Well don't do that!"
|
|
webgl->GenerateWarning("%s: This operation requires zeroing texture data. This is"
|
|
" slow.",
|
|
funcName);
|
|
|
|
gl::GLContext* gl = webgl->GL();
|
|
gl->MakeCurrent();
|
|
|
|
GLenum scopeBindTarget;
|
|
switch (target.get()) {
|
|
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:
|
|
scopeBindTarget = LOCAL_GL_TEXTURE_CUBE_MAP;
|
|
break;
|
|
default:
|
|
scopeBindTarget = target.get();
|
|
break;
|
|
}
|
|
const gl::ScopedBindTexture scopeBindTexture(gl, tex, scopeBindTarget);
|
|
auto compression = usage->format->compression;
|
|
if (compression) {
|
|
auto sizedFormat = usage->format->sizedFormat;
|
|
MOZ_RELEASE_ASSERT(sizedFormat, "GFX: texture sized format not set");
|
|
|
|
const auto fnSizeInBlocks = [](CheckedUint32 pixels, uint8_t pixelsPerBlock) {
|
|
return RoundUpToMultipleOf(pixels, pixelsPerBlock) / pixelsPerBlock;
|
|
};
|
|
|
|
const auto widthBlocks = fnSizeInBlocks(width, compression->blockWidth);
|
|
const auto heightBlocks = fnSizeInBlocks(height, compression->blockHeight);
|
|
|
|
CheckedUint32 checkedByteCount = compression->bytesPerBlock;
|
|
checkedByteCount *= widthBlocks;
|
|
checkedByteCount *= heightBlocks;
|
|
checkedByteCount *= depth;
|
|
|
|
if (!checkedByteCount.isValid())
|
|
return false;
|
|
|
|
const size_t byteCount = checkedByteCount.value();
|
|
|
|
UniqueBuffer zeros = calloc(1, byteCount);
|
|
if (!zeros)
|
|
return false;
|
|
|
|
ScopedUnpackReset scopedReset(webgl);
|
|
gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 1); // Don't bother with striding it
|
|
// well.
|
|
|
|
const auto error = DoCompressedTexSubImage(gl, target.get(), level, 0, 0, 0,
|
|
width, height, depth, sizedFormat,
|
|
byteCount, zeros.get());
|
|
return !error;
|
|
}
|
|
|
|
const auto driverUnpackInfo = usage->idealUnpack;
|
|
MOZ_RELEASE_ASSERT(driverUnpackInfo, "GFX: ideal unpack info not set.");
|
|
|
|
if (webgl->IsExtensionEnabled(WebGLExtensionID::WEBGL_depth_texture) &&
|
|
gl->IsANGLE() &&
|
|
usage->format->d)
|
|
{
|
|
// ANGLE_depth_texture does not allow uploads, so we have to clear.
|
|
// (Restriction because of D3D9)
|
|
MOZ_ASSERT(target == LOCAL_GL_TEXTURE_2D);
|
|
MOZ_ASSERT(level == 0);
|
|
ZeroANGLEDepthTexture(webgl, tex, usage, width, height);
|
|
return true;
|
|
}
|
|
|
|
const webgl::PackingInfo packing = driverUnpackInfo->ToPacking();
|
|
|
|
const auto bytesPerPixel = webgl::BytesPerPixel(packing);
|
|
|
|
CheckedUint32 checkedByteCount = bytesPerPixel;
|
|
checkedByteCount *= width;
|
|
checkedByteCount *= height;
|
|
checkedByteCount *= depth;
|
|
|
|
if (!checkedByteCount.isValid())
|
|
return false;
|
|
|
|
const size_t byteCount = checkedByteCount.value();
|
|
|
|
UniqueBuffer zeros = calloc(1, byteCount);
|
|
if (!zeros)
|
|
return false;
|
|
|
|
ScopedUnpackReset scopedReset(webgl);
|
|
gl->fPixelStorei(LOCAL_GL_UNPACK_ALIGNMENT, 1); // Don't bother with striding it well.
|
|
const auto error = DoTexSubImage(gl, target, level, 0, 0, 0, width, height, depth,
|
|
packing, zeros.get());
|
|
return !error;
|
|
}
|
|
|
|
bool
|
|
WebGLTexture::InitializeImageData(const char* funcName, TexImageTarget target,
|
|
uint32_t level)
|
|
{
|
|
auto& imageInfo = ImageInfoAt(target, level);
|
|
MOZ_ASSERT(imageInfo.IsDefined());
|
|
MOZ_ASSERT(!imageInfo.IsDataInitialized());
|
|
|
|
const auto& usage = imageInfo.mFormat;
|
|
const auto& width = imageInfo.mWidth;
|
|
const auto& height = imageInfo.mHeight;
|
|
const auto& depth = imageInfo.mDepth;
|
|
|
|
if (!ZeroTextureData(mContext, funcName, mGLName, target, level, usage, width, height,
|
|
depth))
|
|
{
|
|
return false;
|
|
}
|
|
|
|
imageInfo.SetIsDataInitialized(true, this);
|
|
return true;
|
|
}
|
|
|
|
void
|
|
WebGLTexture::ClampLevelBaseAndMax()
|
|
{
|
|
if (!mImmutable)
|
|
return;
|
|
|
|
// GLES 3.0.4, p158:
|
|
// "For immutable-format textures, `level_base` is clamped to the range
|
|
// `[0, levels-1]`, `level_max` is then clamped to the range `
|
|
// `[level_base, levels-1]`, where `levels` is the parameter passed to
|
|
// TexStorage* for the texture object."
|
|
mBaseMipmapLevel = Clamp<uint32_t>(mBaseMipmapLevel, 0, mImmutableLevelCount - 1);
|
|
mMaxMipmapLevel = Clamp<uint32_t>(mMaxMipmapLevel, mBaseMipmapLevel,
|
|
mImmutableLevelCount - 1);
|
|
}
|
|
|
|
void
|
|
WebGLTexture::PopulateMipChain(const char* funcName, uint32_t firstLevel,
|
|
uint32_t lastLevel)
|
|
{
|
|
const ImageInfo& baseImageInfo = ImageInfoAtFace(0, firstLevel);
|
|
MOZ_ASSERT(baseImageInfo.IsDefined());
|
|
|
|
uint32_t refWidth = baseImageInfo.mWidth;
|
|
uint32_t refHeight = baseImageInfo.mHeight;
|
|
uint32_t refDepth = baseImageInfo.mDepth;
|
|
if (!refWidth || !refHeight || !refDepth)
|
|
return;
|
|
|
|
for (uint32_t level = firstLevel + 1; level <= lastLevel; level++) {
|
|
bool isMinimal = (refWidth == 1 &&
|
|
refHeight == 1);
|
|
if (mTarget == LOCAL_GL_TEXTURE_3D) {
|
|
isMinimal &= (refDepth == 1);
|
|
}
|
|
|
|
// Higher levels are unaffected.
|
|
if (isMinimal)
|
|
break;
|
|
|
|
refWidth = std::max(uint32_t(1), refWidth / 2);
|
|
refHeight = std::max(uint32_t(1), refHeight / 2);
|
|
if (mTarget == LOCAL_GL_TEXTURE_3D) { // But not TEXTURE_2D_ARRAY!
|
|
refDepth = std::max(uint32_t(1), refDepth / 2);
|
|
}
|
|
|
|
const ImageInfo cur(baseImageInfo.mFormat, refWidth, refHeight, refDepth,
|
|
baseImageInfo.IsDataInitialized());
|
|
|
|
SetImageInfosAtLevel(funcName, level, cur);
|
|
}
|
|
}
|
|
|
|
//////////////////////////////////////////////////////////////////////////////////////////
|
|
// GL calls
|
|
|
|
bool
|
|
WebGLTexture::BindTexture(TexTarget texTarget)
|
|
{
|
|
if (IsDeleted()) {
|
|
mContext->ErrorInvalidOperation("bindTexture: Cannot bind a deleted object.");
|
|
return false;
|
|
}
|
|
|
|
const bool isFirstBinding = !HasEverBeenBound();
|
|
if (!isFirstBinding && mTarget != texTarget) {
|
|
mContext->ErrorInvalidOperation("bindTexture: This texture has already been bound"
|
|
" to a different target.");
|
|
return false;
|
|
}
|
|
|
|
mTarget = texTarget;
|
|
|
|
mContext->gl->fBindTexture(mTarget.get(), mGLName);
|
|
|
|
if (isFirstBinding) {
|
|
mFaceCount = IsCubeMap() ? 6 : 1;
|
|
|
|
gl::GLContext* gl = mContext->gl;
|
|
|
|
// Thanks to the WebKit people for finding this out: GL_TEXTURE_WRAP_R
|
|
// is not present in GLES 2, but is present in GL and it seems as if for
|
|
// cube maps we need to set it to GL_CLAMP_TO_EDGE to get the expected
|
|
// GLES behavior.
|
|
// If we are WebGL 2 though, we'll want to leave it as REPEAT.
|
|
const bool hasWrapR = gl->IsSupported(gl::GLFeature::texture_3D);
|
|
if (IsCubeMap() && hasWrapR && !mContext->IsWebGL2()) {
|
|
gl->fTexParameteri(texTarget.get(), LOCAL_GL_TEXTURE_WRAP_R,
|
|
LOCAL_GL_CLAMP_TO_EDGE);
|
|
}
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
|
|
void
|
|
WebGLTexture::GenerateMipmap(TexTarget texTarget)
|
|
{
|
|
const char funcName[] = "generateMipmap";
|
|
// GLES 3.0.4 p160:
|
|
// "Mipmap generation replaces texel array levels level base + 1 through q with arrays
|
|
// derived from the level base array, regardless of their previous contents. All
|
|
// other mipmap arrays, including the level base array, are left unchanged by this
|
|
// computation."
|
|
const ImageInfo& baseImageInfo = BaseImageInfo();
|
|
if (!baseImageInfo.IsDefined()) {
|
|
mContext->ErrorInvalidOperation("%s: The base level of the texture is not"
|
|
" defined.",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
if (IsCubeMap() && !IsCubeComplete()) {
|
|
mContext->ErrorInvalidOperation("%s: Cube maps must be \"cube complete\".",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
if (!mContext->IsWebGL2() && !baseImageInfo.IsPowerOfTwo()) {
|
|
mContext->ErrorInvalidOperation("%s: The base level of the texture does not have"
|
|
" power-of-two dimensions.",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
auto format = baseImageInfo.mFormat->format;
|
|
if (format->compression) {
|
|
mContext->ErrorInvalidOperation("%s: Texture data at base level is compressed.",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
if (format->d) {
|
|
mContext->ErrorInvalidOperation("%s: Depth textures are not supported.",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
// OpenGL ES 3.0.4 p160:
|
|
// If the level base array was not specified with an unsized internal format from
|
|
// table 3.3 or a sized internal format that is both color-renderable and
|
|
// texture-filterable according to table 3.13, an INVALID_OPERATION error
|
|
// is generated.
|
|
const auto usage = baseImageInfo.mFormat;
|
|
bool canGenerateMipmap = (usage->IsRenderable() && usage->isFilterable);
|
|
switch (usage->format->effectiveFormat) {
|
|
case webgl::EffectiveFormat::Luminance8:
|
|
case webgl::EffectiveFormat::Alpha8:
|
|
case webgl::EffectiveFormat::Luminance8Alpha8:
|
|
// Non-color-renderable formats from Table 3.3.
|
|
canGenerateMipmap = true;
|
|
break;
|
|
default:
|
|
break;
|
|
}
|
|
|
|
if (!canGenerateMipmap) {
|
|
mContext->ErrorInvalidOperation("%s: Texture at base level is not unsized"
|
|
" internal format or is not"
|
|
" color-renderable or texture-filterable.",
|
|
funcName);
|
|
return;
|
|
}
|
|
|
|
// Done with validation. Do the operation.
|
|
|
|
mContext->MakeContextCurrent();
|
|
gl::GLContext* gl = mContext->gl;
|
|
|
|
if (gl->WorkAroundDriverBugs()) {
|
|
// bug 696495 - to work around failures in the texture-mips.html test on various drivers, we
|
|
// set the minification filter before calling glGenerateMipmap. This should not carry a significant performance
|
|
// overhead so we do it unconditionally.
|
|
//
|
|
// note that the choice of GL_NEAREST_MIPMAP_NEAREST really matters. See Chromium bug 101105.
|
|
gl->fTexParameteri(texTarget.get(), LOCAL_GL_TEXTURE_MIN_FILTER,
|
|
LOCAL_GL_NEAREST_MIPMAP_NEAREST);
|
|
gl->fGenerateMipmap(texTarget.get());
|
|
gl->fTexParameteri(texTarget.get(), LOCAL_GL_TEXTURE_MIN_FILTER,
|
|
mMinFilter.get());
|
|
} else {
|
|
gl->fGenerateMipmap(texTarget.get());
|
|
}
|
|
|
|
// Record the results.
|
|
// Note that we don't use MaxEffectiveMipmapLevel() here, since that returns
|
|
// mBaseMipmapLevel if the min filter doesn't require mipmaps.
|
|
const uint32_t maxLevel = mBaseMipmapLevel + baseImageInfo.PossibleMipmapLevels() - 1;
|
|
PopulateMipChain(funcName, mBaseMipmapLevel, maxLevel);
|
|
}
|
|
|
|
JS::Value
|
|
WebGLTexture::GetTexParameter(TexTarget texTarget, GLenum pname)
|
|
{
|
|
mContext->MakeContextCurrent();
|
|
|
|
GLint i = 0;
|
|
GLfloat f = 0.0f;
|
|
|
|
switch (pname) {
|
|
case LOCAL_GL_TEXTURE_MIN_FILTER:
|
|
return JS::NumberValue(uint32_t(mMinFilter.get()));
|
|
|
|
case LOCAL_GL_TEXTURE_MAG_FILTER:
|
|
return JS::NumberValue(uint32_t(mMagFilter.get()));
|
|
|
|
case LOCAL_GL_TEXTURE_WRAP_S:
|
|
return JS::NumberValue(uint32_t(mWrapS.get()));
|
|
|
|
case LOCAL_GL_TEXTURE_WRAP_T:
|
|
return JS::NumberValue(uint32_t(mWrapT.get()));
|
|
|
|
case LOCAL_GL_TEXTURE_BASE_LEVEL:
|
|
return JS::NumberValue(mBaseMipmapLevel);
|
|
|
|
case LOCAL_GL_TEXTURE_COMPARE_MODE:
|
|
return JS::NumberValue(uint32_t(mTexCompareMode));
|
|
|
|
case LOCAL_GL_TEXTURE_MAX_LEVEL:
|
|
return JS::NumberValue(mMaxMipmapLevel);
|
|
|
|
case LOCAL_GL_TEXTURE_IMMUTABLE_FORMAT:
|
|
return JS::BooleanValue(mImmutable);
|
|
|
|
case LOCAL_GL_TEXTURE_IMMUTABLE_LEVELS:
|
|
return JS::NumberValue(uint32_t(mImmutableLevelCount));
|
|
|
|
case LOCAL_GL_TEXTURE_COMPARE_FUNC:
|
|
case LOCAL_GL_TEXTURE_WRAP_R:
|
|
mContext->gl->fGetTexParameteriv(texTarget.get(), pname, &i);
|
|
return JS::NumberValue(uint32_t(i));
|
|
|
|
case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
|
|
case LOCAL_GL_TEXTURE_MAX_LOD:
|
|
case LOCAL_GL_TEXTURE_MIN_LOD:
|
|
mContext->gl->fGetTexParameterfv(texTarget.get(), pname, &f);
|
|
return JS::NumberValue(float(f));
|
|
|
|
default:
|
|
MOZ_CRASH("GFX: Unhandled pname.");
|
|
}
|
|
}
|
|
|
|
bool
|
|
WebGLTexture::IsTexture() const
|
|
{
|
|
return HasEverBeenBound() && !IsDeleted();
|
|
}
|
|
|
|
// Here we have to support all pnames with both int and float params.
|
|
// See this discussion:
|
|
// https://www.khronos.org/webgl/public-mailing-list/archives/1008/msg00014.html
|
|
void
|
|
WebGLTexture::TexParameter(TexTarget texTarget, GLenum pname, const FloatOrInt& param)
|
|
{
|
|
bool isPNameValid = false;
|
|
switch (pname) {
|
|
// GLES 2.0.25 p76:
|
|
case LOCAL_GL_TEXTURE_WRAP_S:
|
|
case LOCAL_GL_TEXTURE_WRAP_T:
|
|
case LOCAL_GL_TEXTURE_MIN_FILTER:
|
|
case LOCAL_GL_TEXTURE_MAG_FILTER:
|
|
isPNameValid = true;
|
|
break;
|
|
|
|
// GLES 3.0.4 p149-150:
|
|
case LOCAL_GL_TEXTURE_BASE_LEVEL:
|
|
case LOCAL_GL_TEXTURE_COMPARE_MODE:
|
|
case LOCAL_GL_TEXTURE_COMPARE_FUNC:
|
|
case LOCAL_GL_TEXTURE_MAX_LEVEL:
|
|
case LOCAL_GL_TEXTURE_MAX_LOD:
|
|
case LOCAL_GL_TEXTURE_MIN_LOD:
|
|
case LOCAL_GL_TEXTURE_WRAP_R:
|
|
if (mContext->IsWebGL2())
|
|
isPNameValid = true;
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
|
|
if (mContext->IsExtensionEnabled(WebGLExtensionID::EXT_texture_filter_anisotropic))
|
|
isPNameValid = true;
|
|
break;
|
|
}
|
|
|
|
if (!isPNameValid) {
|
|
mContext->ErrorInvalidEnumInfo("texParameter: pname", pname);
|
|
return;
|
|
}
|
|
|
|
////////////////
|
|
// Validate params and invalidate if needed.
|
|
|
|
bool paramBadEnum = false;
|
|
bool paramBadValue = false;
|
|
|
|
switch (pname) {
|
|
case LOCAL_GL_TEXTURE_BASE_LEVEL:
|
|
case LOCAL_GL_TEXTURE_MAX_LEVEL:
|
|
paramBadValue = (param.i < 0);
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_COMPARE_MODE:
|
|
paramBadValue = (param.i != LOCAL_GL_NONE &&
|
|
param.i != LOCAL_GL_COMPARE_REF_TO_TEXTURE);
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_COMPARE_FUNC:
|
|
switch (param.i) {
|
|
case LOCAL_GL_LEQUAL:
|
|
case LOCAL_GL_GEQUAL:
|
|
case LOCAL_GL_LESS:
|
|
case LOCAL_GL_GREATER:
|
|
case LOCAL_GL_EQUAL:
|
|
case LOCAL_GL_NOTEQUAL:
|
|
case LOCAL_GL_ALWAYS:
|
|
case LOCAL_GL_NEVER:
|
|
break;
|
|
|
|
default:
|
|
paramBadValue = true;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MIN_FILTER:
|
|
switch (param.i) {
|
|
case LOCAL_GL_NEAREST:
|
|
case LOCAL_GL_LINEAR:
|
|
case LOCAL_GL_NEAREST_MIPMAP_NEAREST:
|
|
case LOCAL_GL_LINEAR_MIPMAP_NEAREST:
|
|
case LOCAL_GL_NEAREST_MIPMAP_LINEAR:
|
|
case LOCAL_GL_LINEAR_MIPMAP_LINEAR:
|
|
break;
|
|
|
|
default:
|
|
paramBadEnum = true;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MAG_FILTER:
|
|
switch (param.i) {
|
|
case LOCAL_GL_NEAREST:
|
|
case LOCAL_GL_LINEAR:
|
|
break;
|
|
|
|
default:
|
|
paramBadEnum = true;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_WRAP_S:
|
|
case LOCAL_GL_TEXTURE_WRAP_T:
|
|
case LOCAL_GL_TEXTURE_WRAP_R:
|
|
switch (param.i) {
|
|
case LOCAL_GL_CLAMP_TO_EDGE:
|
|
case LOCAL_GL_MIRRORED_REPEAT:
|
|
case LOCAL_GL_REPEAT:
|
|
break;
|
|
|
|
default:
|
|
paramBadEnum = true;
|
|
break;
|
|
}
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
|
|
if (param.f < 1.0f)
|
|
paramBadValue = true;
|
|
|
|
break;
|
|
}
|
|
|
|
if (paramBadEnum) {
|
|
if (!param.isFloat) {
|
|
mContext->ErrorInvalidEnum("texParameteri: pname 0x%04x: Invalid param"
|
|
" 0x%04x.",
|
|
pname, param.i);
|
|
} else {
|
|
mContext->ErrorInvalidEnum("texParameterf: pname 0x%04x: Invalid param %g.",
|
|
pname, param.f);
|
|
}
|
|
return;
|
|
}
|
|
|
|
if (paramBadValue) {
|
|
if (!param.isFloat) {
|
|
mContext->ErrorInvalidValue("texParameteri: pname 0x%04x: Invalid param %i"
|
|
" (0x%x).",
|
|
pname, param.i, param.i);
|
|
} else {
|
|
mContext->ErrorInvalidValue("texParameterf: pname 0x%04x: Invalid param %g.",
|
|
pname, param.f);
|
|
}
|
|
return;
|
|
}
|
|
|
|
////////////////
|
|
// Store any needed values
|
|
|
|
FloatOrInt clamped = param;
|
|
switch (pname) {
|
|
case LOCAL_GL_TEXTURE_BASE_LEVEL:
|
|
mBaseMipmapLevel = clamped.i;
|
|
ClampLevelBaseAndMax();
|
|
clamped = FloatOrInt(GLint(mBaseMipmapLevel));
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MAX_LEVEL:
|
|
mMaxMipmapLevel = clamped.i;
|
|
ClampLevelBaseAndMax();
|
|
clamped = FloatOrInt(GLint(mMaxMipmapLevel));
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MIN_FILTER:
|
|
mMinFilter = clamped.i;
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_MAG_FILTER:
|
|
mMagFilter = clamped.i;
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_WRAP_S:
|
|
mWrapS = clamped.i;
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_WRAP_T:
|
|
mWrapT = clamped.i;
|
|
break;
|
|
|
|
case LOCAL_GL_TEXTURE_COMPARE_MODE:
|
|
mTexCompareMode = clamped.i;
|
|
break;
|
|
|
|
// We don't actually need to store the WRAP_R, since it doesn't change texture
|
|
// completeness rules.
|
|
}
|
|
|
|
// Only a couple of pnames don't need to invalidate our resolve status cache.
|
|
switch (pname) {
|
|
case LOCAL_GL_TEXTURE_MAX_ANISOTROPY_EXT:
|
|
case LOCAL_GL_TEXTURE_WRAP_R:
|
|
break;
|
|
|
|
default:
|
|
InvalidateResolveCache();
|
|
break;
|
|
}
|
|
|
|
////////////////
|
|
|
|
mContext->MakeContextCurrent();
|
|
if (!clamped.isFloat)
|
|
mContext->gl->fTexParameteri(texTarget.get(), pname, clamped.i);
|
|
else
|
|
mContext->gl->fTexParameterf(texTarget.get(), pname, clamped.f);
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////////////
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE_0(WebGLTexture)
|
|
|
|
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLTexture, AddRef)
|
|
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLTexture, Release)
|
|
|
|
} // namespace mozilla
|