static bool ClearDepthTexture(const WebGLContext& webgl, const GLuint tex,
const TexImageTarget imageTarget,
const uint32_t level,
const webgl::FormatUsageInfo* const usage,
const uint32_t depth) {
// Depth resources actually clear to 1.0f, not 0.0f!
// They are also always renderable.
MOZ_ASSERT(usage->IsRenderable());
const auto& gl = webgl.gl;
const auto& format = usage->format;
GLenum attachPoint = LOCAL_GL_DEPTH_ATTACHMENT;
GLbitfield clearBits = LOCAL_GL_DEPTH_BUFFER_BIT;
if (format->s) {
attachPoint = LOCAL_GL_DEPTH_STENCIL_ATTACHMENT;
clearBits |= LOCAL_GL_STENCIL_BUFFER_BIT;
}
// -
gl::ScopedFramebuffer scopedFB(gl);
const gl::ScopedBindFramebuffer scopedBindFB(gl, scopedFB.FB());
const webgl::ScopedPrepForResourceClear scopedPrep(webgl);
const auto fnAttach = [&](const uint32_t z) {
switch (imageTarget.get()) {
case LOCAL_GL_TEXTURE_3D:
case LOCAL_GL_TEXTURE_2D_ARRAY:
gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER, attachPoint, tex,
level, z);
break;
default:
if (attachPoint == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_DEPTH_ATTACHMENT,
imageTarget.get(), tex, level);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
LOCAL_GL_STENCIL_ATTACHMENT,
imageTarget.get(), tex, level);
} else {
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, attachPoint,
imageTarget.get(), tex, level);
}
break;
}
};
for (uint32_t z = 0; z < depth; ++z) {
fnAttach(z);
gl->fClear(clearBits);
}
const auto& status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
const bool isComplete = (status == LOCAL_GL_FRAMEBUFFER_COMPLETE);
MOZ_ASSERT(isComplete);
return isComplete;
}
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);
}
bool
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, const webgl::PackingInfo& pi,
GLenum* const out_error) const
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
*out_error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (*out_error)
return true;
}
const char* fallbackReason;
do {
if (mDepth != 1) {
fallbackReason = "depth is not 1";
break;
}
if (webgl->mPixelStore_UnpackSkipPixels ||
webgl->mPixelStore_UnpackSkipRows ||
webgl->mPixelStore_UnpackSkipImages)
{
fallbackReason = "non-zero UNPACK_SKIP_* not yet supported";
break;
}
const auto fnHasPremultMismatch = [&]() {
if (mSrcAlphaType == gfxAlphaType::Opaque)
return false;
const bool srcIsPremult = (mSrcAlphaType == gfxAlphaType::Premult);
const auto& dstIsPremult = webgl->mPixelStore_PremultiplyAlpha;
if (srcIsPremult == dstIsPremult)
return false;
if (dstIsPremult) {
fallbackReason = "UNPACK_PREMULTIPLY_ALPHA_WEBGL is not true";
} else {
fallbackReason = "UNPACK_PREMULTIPLY_ALPHA_WEBGL is not false";
}
return true;
};
if (fnHasPremultMismatch())
break;
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA) {
fallbackReason = "`format` is not RGB or RGBA";
break;
}
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE) {
fallbackReason = "`type` is not UNSIGNED_BYTE";
break;
}
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError()) {
fallbackReason = "bug: failed to attach to FB for blit";
break;
}
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
fallbackReason = "bug: failed to confirm FB for blit";
break;
}
const gfx::IntSize destSize(mWidth, mHeight);
const auto dstOrigin = (webgl->mPixelStore_FlipY ? gl::OriginPos::TopLeft
: gl::OriginPos::BottomLeft);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
fallbackReason = "likely bug: failed to blit";
break;
}
// Blitting was successful, so we're done!
*out_error = 0;
return true;
} while (false);
const nsPrintfCString perfMsg("%s: Failed to hit GPU-copy fast-path: %s (src type %u)",
funcName, fallbackReason, uint32_t(mImage->GetFormat()));
if (webgl->mPixelStore_RequireFastPath) {
webgl->ErrorInvalidOperation("%s", perfMsg.BeginReading());
return false;
}
webgl->GeneratePerfWarning("%s Falling back to CPU upload.",
perfMsg.BeginReading());
const RefPtr<gfx::SourceSurface> surf = mImage->GetAsSourceSurface();
RefPtr<gfx::DataSourceSurface> dataSurf;
if (surf) {
// WARNING: OSX can lose our MakeCurrent here.
dataSurf = surf->GetDataSurface();
}
if (!dataSurf) {
webgl->ErrorOutOfMemory("%s: GetAsSourceSurface or GetDataSurface failed after"
" blit failed for TexUnpackImage.",
funcName);
return false;
}
const TexUnpackSurface surfBlob(webgl, target, mWidth, mHeight, mDepth, dataSurf,
mSrcAlphaType);
return surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level,
dui, xOffset, yOffset, zOffset, pi, out_error);
}
bool
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, GLenum* const out_error) const
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
*out_error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (*out_error)
return false;
}
do {
if (mDepth != 1)
break;
const bool isDstPremult = webgl->mPixelStore_PremultiplyAlpha;
if (mIsSrcPremult != isDstPremult)
break;
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA)
break;
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE)
break;
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError())
break;
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE)
break;
const gfx::IntSize destSize(mWidth, mHeight);
const auto dstOrigin = (webgl->mPixelStore_FlipY ? gl::OriginPos::TopLeft
: gl::OriginPos::BottomLeft);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
break;
}
// Blitting was successful, so we're done!
*out_error = 0;
return true;
} while (false);
webgl->GenerateWarning("%s: Failed to hit GPU-copy fast-path. Falling back to CPU"
" upload.",
funcName);
const RefPtr<gfx::SourceSurface> surf = mImage->GetAsSourceSurface();
RefPtr<gfx::DataSourceSurface> dataSurf;
if (surf) {
// WARNING: OSX can lose our MakeCurrent here.
dataSurf = surf->GetDataSurface();
}
if (!dataSurf) {
webgl->ErrorOutOfMemory("%s: GetAsSourceSurface or GetDataSurface failed after"
" blit failed for TexUnpackImage.",
funcName);
return false;
}
const TexUnpackSurface surfBlob(webgl, target, mWidth, mHeight, mDepth, dataSurf,
mIsSrcPremult);
return surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level,
dui, xOffset, yOffset, zOffset, out_error);
}
void
TexUnpackImage::TexOrSubImage(bool isSubImage, bool needsRespec, const char* funcName,
WebGLTexture* tex, TexImageTarget target, GLint level,
const webgl::DriverUnpackInfo* dui, GLint xOffset,
GLint yOffset, GLint zOffset, GLenum* const out_glError)
{
MOZ_ASSERT_IF(needsRespec, !isSubImage);
*out_glError = 0;
WebGLContext* webgl = tex->mContext;
gl::GLContext* gl = webgl->GL();
gl->MakeCurrent();
if (needsRespec) {
GLenum error = DoTexOrSubImage(isSubImage, gl, target.get(), level, dui, xOffset,
yOffset, zOffset, mWidth, mHeight, mDepth,
nullptr);
if (error) {
MOZ_ASSERT(!error);
*out_glError = LOCAL_GL_OUT_OF_MEMORY;
return;
}
}
do {
if (dui->unpackFormat != LOCAL_GL_RGB && dui->unpackFormat != LOCAL_GL_RGBA)
break;
if (dui->unpackType != LOCAL_GL_UNSIGNED_BYTE)
break;
gl::ScopedFramebuffer scopedFB(gl);
gl::ScopedBindFramebuffer bindFB(gl, scopedFB.FB());
{
gl::GLContext::LocalErrorScope errorScope(*gl);
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_COLOR_ATTACHMENT0,
target.get(), tex->mGLName, level);
if (errorScope.GetError())
break;
}
const GLenum status = gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
if (status != LOCAL_GL_FRAMEBUFFER_COMPLETE)
break;
gl::OriginPos srcOrigin, dstOrigin;
OriginsForDOM(webgl, &srcOrigin, &dstOrigin);
const gfx::IntSize destSize(mWidth, mHeight);
if (!gl->BlitHelper()->BlitImageToFramebuffer(mImage, destSize, scopedFB.FB(),
dstOrigin))
{
break;
}
return; // Blitting was successful, so we're done!
} while (false);
TexUnpackSurface surfBlob(mImage->GetAsSourceSurface(), mIsAlphaPremult);
surfBlob.TexOrSubImage(isSubImage, needsRespec, funcName, tex, target, level, dui,
xOffset, yOffset, zOffset, out_glError);
}