forked from mirrors/gecko-dev
1368 lines
40 KiB
C++
1368 lines
40 KiB
C++
/* -*- 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 "WebGLFramebuffer.h"
|
||
|
||
#include "GLContext.h"
|
||
#include "mozilla/dom/WebGLRenderingContextBinding.h"
|
||
#include "nsPrintfCString.h"
|
||
#include "WebGLContext.h"
|
||
#include "WebGLContextUtils.h"
|
||
#include "WebGLExtensions.h"
|
||
#include "WebGLRenderbuffer.h"
|
||
#include "WebGLTexture.h"
|
||
|
||
namespace mozilla {
|
||
|
||
WebGLFBAttachPoint::WebGLFBAttachPoint(WebGLFramebuffer* fb, GLenum attachmentPoint)
|
||
: mFB(fb)
|
||
, mAttachmentPoint(attachmentPoint)
|
||
, mTexImageTarget(LOCAL_GL_NONE)
|
||
, mTexImageLayer(0)
|
||
, mTexImageLevel(0)
|
||
{ }
|
||
|
||
WebGLFBAttachPoint::~WebGLFBAttachPoint()
|
||
{
|
||
MOZ_ASSERT(!mRenderbufferPtr);
|
||
MOZ_ASSERT(!mTexturePtr);
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::Unlink()
|
||
{
|
||
Clear();
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::IsDeleteRequested() const
|
||
{
|
||
return Texture() ? Texture()->IsDeleteRequested()
|
||
: Renderbuffer() ? Renderbuffer()->IsDeleteRequested()
|
||
: false;
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::IsDefined() const
|
||
{
|
||
/*
|
||
return (Renderbuffer() && Renderbuffer()->IsDefined()) ||
|
||
(Texture() && Texture()->ImageInfoAt(mTexImageTarget,
|
||
mTexImageLevel).IsDefined());
|
||
*/
|
||
return (Renderbuffer() || Texture());
|
||
}
|
||
|
||
const webgl::FormatUsageInfo*
|
||
WebGLFBAttachPoint::Format() const
|
||
{
|
||
MOZ_ASSERT(IsDefined());
|
||
|
||
if (Texture())
|
||
return Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).mFormat;
|
||
|
||
if (Renderbuffer())
|
||
return Renderbuffer()->Format();
|
||
|
||
return nullptr;
|
||
}
|
||
|
||
uint32_t
|
||
WebGLFBAttachPoint::Samples() const
|
||
{
|
||
MOZ_ASSERT(IsDefined());
|
||
|
||
if (mRenderbufferPtr)
|
||
return mRenderbufferPtr->Samples();
|
||
|
||
return 0;
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::HasAlpha() const
|
||
{
|
||
return Format()->format->a;
|
||
}
|
||
|
||
const webgl::FormatUsageInfo*
|
||
WebGLFramebuffer::GetFormatForAttachment(const WebGLFBAttachPoint& attachment) const
|
||
{
|
||
MOZ_ASSERT(attachment.IsDefined());
|
||
MOZ_ASSERT(attachment.Texture() || attachment.Renderbuffer());
|
||
|
||
return attachment.Format();
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::IsReadableFloat() const
|
||
{
|
||
auto formatUsage = Format();
|
||
MOZ_ASSERT(formatUsage);
|
||
|
||
auto format = formatUsage->format;
|
||
if (!format->IsColorFormat())
|
||
return false;
|
||
|
||
return format->componentType == webgl::ComponentType::Float;
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::Clear()
|
||
{
|
||
if (mRenderbufferPtr) {
|
||
MOZ_ASSERT(!mTexturePtr);
|
||
mRenderbufferPtr->UnmarkAttachment(*this);
|
||
} else if (mTexturePtr) {
|
||
mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel).RemoveAttachPoint(this);
|
||
}
|
||
|
||
mTexturePtr = nullptr;
|
||
mRenderbufferPtr = nullptr;
|
||
|
||
OnBackingStoreRespecified();
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::SetTexImage(WebGLTexture* tex, TexImageTarget target, GLint level)
|
||
{
|
||
SetTexImageLayer(tex, target, level, 0);
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::SetTexImageLayer(WebGLTexture* tex, TexImageTarget target,
|
||
GLint level, GLint layer)
|
||
{
|
||
Clear();
|
||
|
||
mTexturePtr = tex;
|
||
mTexImageTarget = target;
|
||
mTexImageLevel = level;
|
||
mTexImageLayer = layer;
|
||
|
||
if (mTexturePtr) {
|
||
mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel).AddAttachPoint(this);
|
||
}
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::SetRenderbuffer(WebGLRenderbuffer* rb)
|
||
{
|
||
Clear();
|
||
|
||
mRenderbufferPtr = rb;
|
||
|
||
if (mRenderbufferPtr) {
|
||
mRenderbufferPtr->MarkAttachment(*this);
|
||
}
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::HasUninitializedImageData() const
|
||
{
|
||
if (!HasImage())
|
||
return false;
|
||
|
||
if (mRenderbufferPtr)
|
||
return mRenderbufferPtr->HasUninitializedImageData();
|
||
|
||
MOZ_ASSERT(mTexturePtr);
|
||
|
||
auto& imageInfo = mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel);
|
||
MOZ_ASSERT(imageInfo.IsDefined());
|
||
|
||
return !imageInfo.IsDataInitialized();
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::SetImageDataStatus(WebGLImageDataStatus newStatus)
|
||
{
|
||
if (!HasImage())
|
||
return;
|
||
|
||
if (mRenderbufferPtr) {
|
||
mRenderbufferPtr->mImageDataStatus = newStatus;
|
||
return;
|
||
}
|
||
|
||
MOZ_ASSERT(mTexturePtr);
|
||
|
||
auto& imageInfo = mTexturePtr->ImageInfoAt(mTexImageTarget, mTexImageLevel);
|
||
MOZ_ASSERT(imageInfo.IsDefined());
|
||
|
||
const bool isDataInitialized = (newStatus == WebGLImageDataStatus::InitializedImageData);
|
||
imageInfo.SetIsDataInitialized(isDataInitialized, mTexturePtr);
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::HasImage() const
|
||
{
|
||
if (Texture() && Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).IsDefined())
|
||
return true;
|
||
|
||
if (Renderbuffer() && Renderbuffer()->IsDefined())
|
||
return true;
|
||
|
||
return false;
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::Size(uint32_t* const out_width, uint32_t* const out_height) const
|
||
{
|
||
MOZ_ASSERT(HasImage());
|
||
|
||
if (Renderbuffer()) {
|
||
*out_width = Renderbuffer()->Width();
|
||
*out_height = Renderbuffer()->Height();
|
||
return;
|
||
}
|
||
|
||
MOZ_ASSERT(Texture());
|
||
MOZ_ASSERT(Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel).IsDefined());
|
||
const auto& imageInfo = Texture()->ImageInfoAt(mTexImageTarget, mTexImageLevel);
|
||
|
||
*out_width = imageInfo.mWidth;
|
||
*out_height = imageInfo.mHeight;
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::OnBackingStoreRespecified() const
|
||
{
|
||
mFB->InvalidateFramebufferStatus();
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::AttachmentName(nsCString* out) const
|
||
{
|
||
switch (mAttachmentPoint) {
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
out->AssignLiteral("DEPTH_ATTACHMENT");
|
||
return;
|
||
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
out->AssignLiteral("STENCIL_ATTACHMENT");
|
||
return;
|
||
|
||
case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
|
||
out->AssignLiteral("DEPTH_STENCIL_ATTACHMENT");
|
||
return;
|
||
|
||
default:
|
||
MOZ_ASSERT(mAttachmentPoint >= LOCAL_GL_COLOR_ATTACHMENT0);
|
||
out->AssignLiteral("COLOR_ATTACHMENT");
|
||
const uint32_t n = mAttachmentPoint - LOCAL_GL_COLOR_ATTACHMENT0;
|
||
out->AppendInt(n);
|
||
return;
|
||
}
|
||
}
|
||
|
||
bool
|
||
WebGLFBAttachPoint::IsComplete(WebGLContext* webgl, nsCString* const out_info) const
|
||
{
|
||
MOZ_ASSERT(IsDefined());
|
||
|
||
if (!HasImage()) {
|
||
AttachmentName(out_info);
|
||
out_info->AppendLiteral("'s image is not defined");
|
||
return false;
|
||
}
|
||
|
||
uint32_t width;
|
||
uint32_t height;
|
||
Size(&width, &height);
|
||
if (!width || !height) {
|
||
AttachmentName(out_info);
|
||
out_info->AppendLiteral(" has no width or height");
|
||
return false;
|
||
}
|
||
|
||
const auto formatUsage = Format();
|
||
if (!formatUsage->IsRenderable()) {
|
||
nsAutoCString attachName;
|
||
AttachmentName(&attachName);
|
||
|
||
*out_info = nsPrintfCString("%s has an effective format of %s, which is not"
|
||
" renderable",
|
||
attachName.BeginReading(), formatUsage->format->name);
|
||
return false;
|
||
}
|
||
|
||
const auto format = formatUsage->format;
|
||
|
||
bool hasRequiredBits;
|
||
|
||
switch (mAttachmentPoint) {
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
hasRequiredBits = format->d;
|
||
break;
|
||
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
hasRequiredBits = format->s;
|
||
break;
|
||
|
||
case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
|
||
MOZ_ASSERT(!webgl->IsWebGL2());
|
||
hasRequiredBits = (format->d && format->s);
|
||
break;
|
||
|
||
default:
|
||
MOZ_ASSERT(mAttachmentPoint >= LOCAL_GL_COLOR_ATTACHMENT0);
|
||
hasRequiredBits = format->IsColorFormat();
|
||
break;
|
||
}
|
||
|
||
if (!hasRequiredBits) {
|
||
AttachmentName(out_info);
|
||
out_info->AppendLiteral("'s format is missing required color/depth/stencil bits");
|
||
return false;
|
||
}
|
||
|
||
if (!webgl->IsWebGL2()) {
|
||
bool hasSurplusPlanes = false;
|
||
|
||
switch (mAttachmentPoint) {
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
hasSurplusPlanes = format->s;
|
||
break;
|
||
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
hasSurplusPlanes = format->d;
|
||
break;
|
||
}
|
||
|
||
if (hasSurplusPlanes) {
|
||
AttachmentName(out_info);
|
||
out_info->AppendLiteral("'s format has depth or stencil bits when it"
|
||
" shouldn't");
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
void
|
||
WebGLFBAttachPoint::FinalizeAttachment(gl::GLContext* gl, GLenum attachment) const
|
||
{
|
||
if (!HasImage()) {
|
||
switch (attachment) {
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
|
||
break;
|
||
|
||
default:
|
||
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, attachment,
|
||
LOCAL_GL_RENDERBUFFER, 0);
|
||
break;
|
||
}
|
||
|
||
return;
|
||
}
|
||
MOZ_ASSERT(HasImage());
|
||
|
||
if (Texture()) {
|
||
MOZ_ASSERT(gl == Texture()->mContext->GL());
|
||
|
||
const GLenum imageTarget = ImageTarget().get();
|
||
const GLint mipLevel = MipLevel();
|
||
const GLint layer = Layer();
|
||
const GLuint glName = Texture()->mGLName;
|
||
|
||
switch (imageTarget) {
|
||
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:
|
||
if (attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
|
||
imageTarget, glName, mipLevel);
|
||
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER,
|
||
LOCAL_GL_STENCIL_ATTACHMENT, imageTarget,
|
||
glName, mipLevel);
|
||
} else {
|
||
gl->fFramebufferTexture2D(LOCAL_GL_FRAMEBUFFER, attachment, imageTarget,
|
||
glName, mipLevel);
|
||
}
|
||
break;
|
||
|
||
case LOCAL_GL_TEXTURE_2D_ARRAY:
|
||
case LOCAL_GL_TEXTURE_3D:
|
||
if (attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER,
|
||
LOCAL_GL_DEPTH_ATTACHMENT, glName, mipLevel,
|
||
layer);
|
||
gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER,
|
||
LOCAL_GL_STENCIL_ATTACHMENT, glName,
|
||
mipLevel, layer);
|
||
} else {
|
||
gl->fFramebufferTextureLayer(LOCAL_GL_FRAMEBUFFER, attachment, glName,
|
||
mipLevel, layer);
|
||
}
|
||
break;
|
||
}
|
||
return;
|
||
}
|
||
|
||
if (Renderbuffer()) {
|
||
Renderbuffer()->DoFramebufferRenderbuffer(attachment);
|
||
return;
|
||
}
|
||
|
||
MOZ_CRASH("GFX: invalid render buffer");
|
||
}
|
||
|
||
JS::Value
|
||
WebGLFBAttachPoint::GetParameter(const char* funcName, WebGLContext* webgl, JSContext* cx,
|
||
GLenum target, GLenum attachment, GLenum pname,
|
||
ErrorResult* const out_error)
|
||
{
|
||
const bool hasAttachment = (mTexturePtr || mRenderbufferPtr);
|
||
if (!hasAttachment) {
|
||
// Divergent between GLES 3 and 2.
|
||
|
||
// GLES 2.0.25 p127:
|
||
// "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, then querying any
|
||
// other pname will generate INVALID_ENUM."
|
||
|
||
// GLES 3.0.4 p240:
|
||
// "If the value of FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE is NONE, no framebuffer is
|
||
// bound to target. In this case querying pname
|
||
// FRAMEBUFFER_ATTACHMENT_OBJECT_NAME will return zero, and all other queries
|
||
// will generate an INVALID_OPERATION error."
|
||
switch (pname) {
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
|
||
return JS::Int32Value(LOCAL_GL_NONE);
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
|
||
if (webgl->IsWebGL2())
|
||
return JS::NullValue();
|
||
|
||
break;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
if (webgl->IsWebGL2()) {
|
||
webgl->ErrorInvalidOperation("%s: No attachment at %s.", funcName,
|
||
webgl->EnumName(attachment));
|
||
} else {
|
||
webgl->ErrorInvalidEnum("%s: No attachment at %s.", funcName,
|
||
webgl->EnumName(attachment));
|
||
}
|
||
return JS::NullValue();
|
||
}
|
||
|
||
bool isPNameValid = false;
|
||
switch (pname) {
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_TYPE:
|
||
return JS::Int32Value(mTexturePtr ? LOCAL_GL_TEXTURE
|
||
: LOCAL_GL_RENDERBUFFER);
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_OBJECT_NAME:
|
||
return (mTexturePtr ? webgl->WebGLObjectAsJSValue(cx, mTexturePtr.get(),
|
||
*out_error)
|
||
: webgl->WebGLObjectAsJSValue(cx, mRenderbufferPtr.get(),
|
||
*out_error));
|
||
|
||
//////
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LEVEL:
|
||
if (mTexturePtr)
|
||
return JS::Int32Value(MipLevel());
|
||
break;
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_CUBE_MAP_FACE:
|
||
if (mTexturePtr) {
|
||
GLenum face = 0;
|
||
if (mTexturePtr->Target() == LOCAL_GL_TEXTURE_CUBE_MAP) {
|
||
face = ImageTarget().get();
|
||
}
|
||
return JS::Int32Value(face);
|
||
}
|
||
break;
|
||
|
||
//////
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_TEXTURE_LAYER:
|
||
if (webgl->IsWebGL2() && mTexturePtr) {
|
||
int32_t layer = 0;
|
||
if (ImageTarget() == LOCAL_GL_TEXTURE_2D_ARRAY ||
|
||
ImageTarget() == LOCAL_GL_TEXTURE_3D)
|
||
{
|
||
layer = Layer();
|
||
}
|
||
return JS::Int32Value(layer);
|
||
}
|
||
break;
|
||
|
||
//////
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
|
||
isPNameValid = webgl->IsWebGL2();
|
||
break;
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
|
||
isPNameValid = (webgl->IsWebGL2() ||
|
||
webgl->IsExtensionEnabled(WebGLExtensionID::EXT_sRGB));
|
||
break;
|
||
}
|
||
|
||
if (!isPNameValid) {
|
||
webgl->ErrorInvalidEnum("%s: Invalid pname: 0x%04x", funcName, pname);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
const auto usage = Format();
|
||
if (!usage)
|
||
return JS::NullValue();
|
||
|
||
const auto format = usage->format;
|
||
|
||
GLint ret = 0;
|
||
switch (pname) {
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_RED_SIZE:
|
||
ret = format->r;
|
||
break;
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_GREEN_SIZE:
|
||
ret = format->g;
|
||
break;
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_BLUE_SIZE:
|
||
ret = format->b;
|
||
break;
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_ALPHA_SIZE:
|
||
ret = format->a;
|
||
break;
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_DEPTH_SIZE:
|
||
ret = format->d;
|
||
break;
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_STENCIL_SIZE:
|
||
ret = format->s;
|
||
break;
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COLOR_ENCODING:
|
||
ret = (format->isSRGB ? LOCAL_GL_SRGB
|
||
: LOCAL_GL_LINEAR);
|
||
break;
|
||
|
||
case LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE:
|
||
MOZ_ASSERT(attachment != LOCAL_GL_DEPTH_STENCIL_ATTACHMENT);
|
||
|
||
switch (format->componentType) {
|
||
case webgl::ComponentType::Special:
|
||
MOZ_ASSERT(false, "Should never happen.");
|
||
break;
|
||
case webgl::ComponentType::None:
|
||
ret = LOCAL_GL_NONE;
|
||
break;
|
||
case webgl::ComponentType::Int:
|
||
ret = LOCAL_GL_INT;
|
||
break;
|
||
case webgl::ComponentType::UInt:
|
||
ret = LOCAL_GL_UNSIGNED_INT;
|
||
break;
|
||
case webgl::ComponentType::NormInt:
|
||
ret = LOCAL_GL_SIGNED_NORMALIZED;
|
||
break;
|
||
case webgl::ComponentType::NormUInt:
|
||
ret = LOCAL_GL_UNSIGNED_NORMALIZED;
|
||
break;
|
||
case webgl::ComponentType::Float:
|
||
ret = LOCAL_GL_FLOAT;
|
||
break;
|
||
}
|
||
break;
|
||
|
||
default:
|
||
MOZ_ASSERT(false, "Missing case.");
|
||
break;
|
||
}
|
||
|
||
return JS::Int32Value(ret);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// WebGLFramebuffer
|
||
|
||
WebGLFramebuffer::WebGLFramebuffer(WebGLContext* webgl, GLuint fbo)
|
||
: WebGLContextBoundObject(webgl)
|
||
, mGLName(fbo)
|
||
, mIsKnownFBComplete(false)
|
||
, mReadBufferMode(LOCAL_GL_COLOR_ATTACHMENT0)
|
||
, mColorAttachment0(this, LOCAL_GL_COLOR_ATTACHMENT0)
|
||
, mDepthAttachment(this, LOCAL_GL_DEPTH_ATTACHMENT)
|
||
, mStencilAttachment(this, LOCAL_GL_STENCIL_ATTACHMENT)
|
||
, mDepthStencilAttachment(this, LOCAL_GL_DEPTH_STENCIL_ATTACHMENT)
|
||
, mMoreColorAttachments(webgl->mGLMaxColorAttachments)
|
||
, mDrawBuffers(1, LOCAL_GL_COLOR_ATTACHMENT0)
|
||
#ifdef ANDROID
|
||
, mIsFB(false)
|
||
#endif
|
||
{
|
||
mContext->mFramebuffers.insertBack(this);
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::Delete()
|
||
{
|
||
mColorAttachment0.Clear();
|
||
mDepthAttachment.Clear();
|
||
mStencilAttachment.Clear();
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
cur.Clear();
|
||
}
|
||
|
||
mContext->MakeContextCurrent();
|
||
mContext->gl->fDeleteFramebuffers(1, &mGLName);
|
||
|
||
LinkedListElement<WebGLFramebuffer>::removeFrom(mContext->mFramebuffers);
|
||
|
||
#ifdef ANDROID
|
||
mIsFB = false;
|
||
#endif
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferRenderbuffer(GLenum attachment, RBTarget rbtarget,
|
||
WebGLRenderbuffer* rb)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!mContext->ValidateObjectAllowNull("framebufferRenderbuffer: renderbuffer", rb))
|
||
return;
|
||
|
||
// `attachPointEnum` is validated by ValidateFramebufferAttachment().
|
||
|
||
RefPtr<WebGLRenderbuffer> rb_ = rb; // Bug 1201275
|
||
const auto fnAttach = [this, &rb_](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetRenderbuffer(rb_);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferTexture2D(GLenum attachment, TexImageTarget texImageTarget,
|
||
WebGLTexture* tex, GLint level)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!mContext->ValidateObjectAllowNull("framebufferTexture2D: texture", tex))
|
||
return;
|
||
|
||
if (tex) {
|
||
if (!tex->HasEverBeenBound()) {
|
||
mContext->ErrorInvalidOperation("framebufferTexture2D: the texture"
|
||
" is not the name of a texture.");
|
||
return;
|
||
}
|
||
|
||
const TexTarget destTexTarget = TexImageTargetToTexTarget(texImageTarget);
|
||
if (tex->Target() != destTexTarget) {
|
||
mContext->ErrorInvalidOperation("framebufferTexture2D: Mismatched"
|
||
" texture and texture target.");
|
||
return;
|
||
}
|
||
}
|
||
|
||
RefPtr<WebGLTexture> tex_ = tex; // Bug 1201275
|
||
const auto fnAttach = [this, &tex_, texImageTarget, level](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetTexImage(tex_, texImageTarget, level);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FramebufferTextureLayer(GLenum attachment, WebGLTexture* tex,
|
||
GLint level, GLint layer)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
const TexImageTarget texImageTarget = (tex ? tex->Target().get()
|
||
: LOCAL_GL_TEXTURE_2D);
|
||
|
||
RefPtr<WebGLTexture> tex_ = tex; // Bug 1201275
|
||
const auto fnAttach = [this, &tex_, texImageTarget, level, layer](GLenum attachment) {
|
||
const auto attachPoint = this->GetAttachPoint(attachment);
|
||
MOZ_ASSERT(attachPoint);
|
||
|
||
attachPoint->SetTexImageLayer(tex_, texImageTarget, level, layer);
|
||
};
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
fnAttach(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
fnAttach(LOCAL_GL_STENCIL_ATTACHMENT);
|
||
} else {
|
||
fnAttach(attachment);
|
||
}
|
||
|
||
InvalidateFramebufferStatus();
|
||
}
|
||
|
||
WebGLFBAttachPoint*
|
||
WebGLFramebuffer::GetAttachPoint(GLenum attachPoint)
|
||
{
|
||
switch (attachPoint) {
|
||
case LOCAL_GL_COLOR_ATTACHMENT0:
|
||
return &mColorAttachment0;
|
||
|
||
case LOCAL_GL_DEPTH_STENCIL_ATTACHMENT:
|
||
return &mDepthStencilAttachment;
|
||
|
||
case LOCAL_GL_DEPTH_ATTACHMENT:
|
||
return &mDepthAttachment;
|
||
|
||
case LOCAL_GL_STENCIL_ATTACHMENT:
|
||
return &mStencilAttachment;
|
||
|
||
default:
|
||
break;
|
||
}
|
||
|
||
const auto lastCAEnum = mContext->LastColorAttachmentEnum();
|
||
if (attachPoint < LOCAL_GL_COLOR_ATTACHMENT1 ||
|
||
attachPoint > lastCAEnum)
|
||
{
|
||
return nullptr;
|
||
}
|
||
|
||
if (!mMoreColorAttachments.Size()) {
|
||
for (GLenum cur = LOCAL_GL_COLOR_ATTACHMENT1; cur <= lastCAEnum; cur++) {
|
||
mMoreColorAttachments.AppendNew(this, cur);
|
||
}
|
||
}
|
||
MOZ_ASSERT(LOCAL_GL_COLOR_ATTACHMENT0 + mMoreColorAttachments.Size() == lastCAEnum);
|
||
|
||
const size_t offset = attachPoint - LOCAL_GL_COLOR_ATTACHMENT1;
|
||
MOZ_ASSERT(offset <= mMoreColorAttachments.Size());
|
||
return &mMoreColorAttachments[offset];
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::DetachTexture(const WebGLTexture* tex)
|
||
{
|
||
if (mColorAttachment0.Texture() == tex)
|
||
mColorAttachment0.Clear();
|
||
|
||
if (mDepthAttachment.Texture() == tex)
|
||
mDepthAttachment.Clear();
|
||
|
||
if (mStencilAttachment.Texture() == tex)
|
||
mStencilAttachment.Clear();
|
||
|
||
if (mDepthStencilAttachment.Texture() == tex)
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
if (cur.Texture() == tex)
|
||
cur.Clear();
|
||
}
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::DetachRenderbuffer(const WebGLRenderbuffer* rb)
|
||
{
|
||
if (mColorAttachment0.Renderbuffer() == rb)
|
||
mColorAttachment0.Clear();
|
||
|
||
if (mDepthAttachment.Renderbuffer() == rb)
|
||
mDepthAttachment.Clear();
|
||
|
||
if (mStencilAttachment.Renderbuffer() == rb)
|
||
mStencilAttachment.Clear();
|
||
|
||
if (mDepthStencilAttachment.Renderbuffer() == rb)
|
||
mDepthStencilAttachment.Clear();
|
||
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
if (cur.Renderbuffer() == rb)
|
||
cur.Clear();
|
||
}
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::HasDefinedAttachments() const
|
||
{
|
||
bool hasAttachments = false;
|
||
|
||
hasAttachments |= mColorAttachment0.IsDefined();
|
||
hasAttachments |= mDepthAttachment.IsDefined();
|
||
hasAttachments |= mStencilAttachment.IsDefined();
|
||
hasAttachments |= mDepthStencilAttachment.IsDefined();
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
hasAttachments |= cur.IsDefined();
|
||
}
|
||
|
||
return hasAttachments;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::HasIncompleteAttachments(nsCString* const out_info) const
|
||
{
|
||
const auto fnIsIncomplete = [this, out_info](const WebGLFBAttachPoint& cur) {
|
||
if (!cur.IsDefined())
|
||
return false; // Not defined, so can't count as incomplete.
|
||
|
||
return !cur.IsComplete(this->mContext, out_info);
|
||
};
|
||
|
||
bool hasIncomplete = false;
|
||
|
||
hasIncomplete |= fnIsIncomplete(mColorAttachment0);
|
||
hasIncomplete |= fnIsIncomplete(mDepthAttachment);
|
||
hasIncomplete |= fnIsIncomplete(mStencilAttachment);
|
||
hasIncomplete |= fnIsIncomplete(mDepthStencilAttachment);
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
hasIncomplete |= fnIsIncomplete(cur);
|
||
}
|
||
|
||
return hasIncomplete;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::AllImageRectsMatch() const
|
||
{
|
||
MOZ_ASSERT(HasDefinedAttachments());
|
||
DebugOnly<nsCString> fbStatusInfo;
|
||
MOZ_ASSERT(!HasIncompleteAttachments(&fbStatusInfo));
|
||
|
||
bool needsInit = true;
|
||
uint32_t width = 0;
|
||
uint32_t height = 0;
|
||
|
||
const auto fnInitializeOrMatch = [&needsInit, &width,
|
||
&height](const WebGLFBAttachPoint& attach)
|
||
{
|
||
if (!attach.HasImage())
|
||
return true;
|
||
|
||
uint32_t curWidth;
|
||
uint32_t curHeight;
|
||
attach.Size(&curWidth, &curHeight);
|
||
|
||
if (needsInit) {
|
||
needsInit = false;
|
||
width = curWidth;
|
||
height = curHeight;
|
||
return true;
|
||
}
|
||
|
||
return (curWidth == width &&
|
||
curHeight == height);
|
||
};
|
||
|
||
bool matches = true;
|
||
|
||
matches &= fnInitializeOrMatch(mColorAttachment0 );
|
||
matches &= fnInitializeOrMatch(mDepthAttachment );
|
||
matches &= fnInitializeOrMatch(mStencilAttachment );
|
||
matches &= fnInitializeOrMatch(mDepthStencilAttachment);
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
matches &= fnInitializeOrMatch(cur);
|
||
}
|
||
|
||
return matches;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::AllImageSamplesMatch() const
|
||
{
|
||
MOZ_ASSERT(HasDefinedAttachments());
|
||
DebugOnly<nsCString> fbStatusInfo;
|
||
MOZ_ASSERT(!HasIncompleteAttachments(&fbStatusInfo));
|
||
|
||
bool needsInit = true;
|
||
uint32_t samples = 0;
|
||
|
||
const auto fnInitializeOrMatch = [&needsInit,
|
||
&samples](const WebGLFBAttachPoint& attach)
|
||
{
|
||
if (!attach.HasImage())
|
||
return true;
|
||
|
||
const uint32_t curSamples = attach.Samples();
|
||
|
||
if (needsInit) {
|
||
needsInit = false;
|
||
samples = curSamples;
|
||
return true;
|
||
}
|
||
|
||
return (curSamples == samples);
|
||
};
|
||
|
||
bool matches = true;
|
||
|
||
matches &= fnInitializeOrMatch(mColorAttachment0 );
|
||
matches &= fnInitializeOrMatch(mDepthAttachment );
|
||
matches &= fnInitializeOrMatch(mStencilAttachment );
|
||
matches &= fnInitializeOrMatch(mDepthStencilAttachment);
|
||
|
||
for (const auto& cur : mMoreColorAttachments) {
|
||
matches &= fnInitializeOrMatch(cur);
|
||
}
|
||
|
||
return matches;
|
||
}
|
||
|
||
FBStatus
|
||
WebGLFramebuffer::PrecheckFramebufferStatus(nsCString* const out_info) const
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
if (!HasDefinedAttachments())
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MISSING_ATTACHMENT; // No attachments
|
||
|
||
if (HasIncompleteAttachments(out_info))
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_ATTACHMENT;
|
||
|
||
if (!AllImageRectsMatch())
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_DIMENSIONS; // Inconsistent sizes
|
||
|
||
if (!AllImageSamplesMatch())
|
||
return LOCAL_GL_FRAMEBUFFER_INCOMPLETE_MULTISAMPLE; // Inconsistent samples
|
||
|
||
if (!mContext->IsWebGL2()) {
|
||
// INCOMPLETE_DIMENSIONS doesn't exist in GLES3.
|
||
const auto depthOrStencilCount = int(mDepthAttachment.IsDefined()) +
|
||
int(mStencilAttachment.IsDefined()) +
|
||
int(mDepthStencilAttachment.IsDefined());
|
||
if (depthOrStencilCount > 1)
|
||
return LOCAL_GL_FRAMEBUFFER_UNSUPPORTED;
|
||
}
|
||
|
||
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
|
||
}
|
||
|
||
FBStatus
|
||
WebGLFramebuffer::CheckFramebufferStatus(nsCString* const out_info) const
|
||
{
|
||
if (mIsKnownFBComplete)
|
||
return LOCAL_GL_FRAMEBUFFER_COMPLETE;
|
||
|
||
FBStatus ret = PrecheckFramebufferStatus(out_info);
|
||
if (ret != LOCAL_GL_FRAMEBUFFER_COMPLETE)
|
||
return ret;
|
||
|
||
// Looks good on our end. Let's ask the driver.
|
||
mContext->MakeContextCurrent();
|
||
|
||
// Ok, attach our chosen flavor of {DEPTH, STENCIL, DEPTH_STENCIL}.
|
||
FinalizeAttachments();
|
||
|
||
// TODO: This should not be unconditionally GL_FRAMEBUFFER.
|
||
ret = mContext->gl->fCheckFramebufferStatus(LOCAL_GL_FRAMEBUFFER);
|
||
|
||
if (ret == LOCAL_GL_FRAMEBUFFER_COMPLETE) {
|
||
mIsKnownFBComplete = true;
|
||
} else {
|
||
out_info->AssignLiteral("Bad status according to the driver");
|
||
}
|
||
|
||
return ret;
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::ValidateAndInitAttachments(const char* funcName)
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
nsCString fbStatusInfo;
|
||
const auto fbStatus = CheckFramebufferStatus(&fbStatusInfo);
|
||
if (fbStatus != LOCAL_GL_FRAMEBUFFER_COMPLETE) {
|
||
nsCString errorText = nsPrintfCString("Incomplete framebuffer: Status 0x%04x",
|
||
fbStatus.get());
|
||
if (fbStatusInfo.Length()) {
|
||
errorText += ": ";
|
||
errorText += fbStatusInfo;
|
||
}
|
||
|
||
mContext->ErrorInvalidFramebufferOperation("%s: %s.", funcName,
|
||
errorText.BeginReading());
|
||
return false;
|
||
}
|
||
|
||
// Cool! We've checked out ok. Just need to initialize.
|
||
|
||
//////
|
||
// Check if we need to initialize anything
|
||
|
||
std::vector<WebGLFBAttachPoint*> tex3DToClear;
|
||
|
||
const auto fnGatherIf3D = [&](WebGLFBAttachPoint& attach) {
|
||
if (!attach.Texture())
|
||
return false;
|
||
|
||
const auto& info = attach.Texture()->ImageInfoAt(attach.ImageTarget(),
|
||
attach.MipLevel());
|
||
if (info.mDepth == 1)
|
||
return false;
|
||
|
||
tex3DToClear.push_back(&attach);
|
||
return true;
|
||
};
|
||
|
||
//////
|
||
|
||
uint32_t clearBits = 0;
|
||
std::vector<GLenum> drawBuffersForClear(1 + mMoreColorAttachments.Size(),
|
||
LOCAL_GL_NONE);
|
||
|
||
std::vector<WebGLFBAttachPoint*> attachmentsToClear;
|
||
attachmentsToClear.reserve(1 + mMoreColorAttachments.Size() + 3);
|
||
|
||
const auto fnGatherColor = [&](WebGLFBAttachPoint& attach, uint32_t colorAttachNum) {
|
||
if (!IsDrawBuffer(colorAttachNum) || !attach.HasUninitializedImageData())
|
||
return;
|
||
|
||
if (fnGatherIf3D(attach))
|
||
return;
|
||
|
||
attachmentsToClear.push_back(&attach);
|
||
|
||
clearBits |= LOCAL_GL_COLOR_BUFFER_BIT;
|
||
drawBuffersForClear[colorAttachNum] = LOCAL_GL_COLOR_ATTACHMENT0 + colorAttachNum;
|
||
};
|
||
|
||
const auto fnGatherOther = [&](WebGLFBAttachPoint& attach, GLenum attachClearBits) {
|
||
if (!attach.HasUninitializedImageData())
|
||
return;
|
||
|
||
if (fnGatherIf3D(attach))
|
||
return;
|
||
|
||
attachmentsToClear.push_back(&attach);
|
||
|
||
clearBits |= attachClearBits;
|
||
};
|
||
|
||
//////
|
||
|
||
fnGatherColor(mColorAttachment0, 0);
|
||
|
||
size_t colorAttachNum = 1;
|
||
for (auto& cur : mMoreColorAttachments) {
|
||
fnGatherColor(cur, colorAttachNum);
|
||
++colorAttachNum;
|
||
}
|
||
|
||
fnGatherOther(mDepthAttachment, LOCAL_GL_DEPTH_BUFFER_BIT);
|
||
fnGatherOther(mStencilAttachment, LOCAL_GL_STENCIL_BUFFER_BIT);
|
||
fnGatherOther(mDepthStencilAttachment,
|
||
LOCAL_GL_DEPTH_BUFFER_BIT | LOCAL_GL_STENCIL_BUFFER_BIT);
|
||
|
||
//////
|
||
|
||
mContext->MakeContextCurrent();
|
||
|
||
if (clearBits) {
|
||
const auto fnDrawBuffers = [this](const std::vector<GLenum>& list) {
|
||
this->mContext->gl->fDrawBuffers(list.size(), list.data());
|
||
};
|
||
|
||
const auto drawBufferExt = WebGLExtensionID::WEBGL_draw_buffers;
|
||
const bool hasDrawBuffers = (mContext->IsWebGL2() ||
|
||
mContext->IsExtensionEnabled(drawBufferExt));
|
||
|
||
if (hasDrawBuffers) {
|
||
fnDrawBuffers(drawBuffersForClear);
|
||
}
|
||
|
||
////////////
|
||
|
||
// Clear!
|
||
{
|
||
gl::ScopedBindFramebuffer autoBind(mContext->gl, mGLName);
|
||
|
||
mContext->ForceClearFramebufferWithDefaultValues(clearBits, false);
|
||
}
|
||
|
||
if (hasDrawBuffers) {
|
||
fnDrawBuffers(mDrawBuffers);
|
||
}
|
||
|
||
for (auto* cur : attachmentsToClear) {
|
||
cur->SetImageDataStatus(WebGLImageDataStatus::InitializedImageData);
|
||
}
|
||
}
|
||
|
||
//////
|
||
|
||
for (auto* attach : tex3DToClear) {
|
||
auto* tex = attach->Texture();
|
||
if (!tex->InitializeImageData(funcName, attach->ImageTarget(),
|
||
attach->MipLevel()))
|
||
{
|
||
return false;
|
||
}
|
||
}
|
||
|
||
return true;
|
||
}
|
||
|
||
static void
|
||
FinalizeDrawAndReadBuffers(gl::GLContext* gl, bool isColorBufferDefined)
|
||
{
|
||
MOZ_ASSERT(gl, "Expected a valid GLContext ptr.");
|
||
// GLES don't support DrawBuffer()/ReadBuffer.
|
||
// According to http://www.opengl.org/wiki/Framebuffer_Object
|
||
//
|
||
// Each draw buffers must either specify color attachment points that have images
|
||
// attached or must be GL_NONE. (GL_FRAMEBUFFER_INCOMPLETE_DRAW_BUFFER when false).
|
||
//
|
||
// If the read buffer is set, then it must specify an attachment point that has an
|
||
// image attached. (GL_FRAMEBUFFER_INCOMPLETE_READ_BUFFER when false).
|
||
//
|
||
// Note that this test is not performed if OpenGL 4.2 or ARB_ES2_compatibility is
|
||
// available.
|
||
if (gl->IsGLES() ||
|
||
gl->IsSupported(gl::GLFeature::ES2_compatibility) ||
|
||
gl->IsAtLeast(gl::ContextProfile::OpenGL, 420))
|
||
{
|
||
return;
|
||
}
|
||
|
||
// TODO(djg): Assert that fDrawBuffer/fReadBuffer is not NULL.
|
||
GLenum colorBufferSource = isColorBufferDefined ? LOCAL_GL_COLOR_ATTACHMENT0
|
||
: LOCAL_GL_NONE;
|
||
gl->fDrawBuffer(colorBufferSource);
|
||
gl->fReadBuffer(colorBufferSource);
|
||
}
|
||
|
||
void
|
||
WebGLFramebuffer::FinalizeAttachments() const
|
||
{
|
||
MOZ_ASSERT(mContext->mBoundDrawFramebuffer == this ||
|
||
mContext->mBoundReadFramebuffer == this);
|
||
|
||
gl::GLContext* gl = mContext->gl;
|
||
|
||
// Nuke the depth and stencil attachment points.
|
||
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_DEPTH_ATTACHMENT,
|
||
LOCAL_GL_RENDERBUFFER, 0);
|
||
gl->fFramebufferRenderbuffer(LOCAL_GL_FRAMEBUFFER, LOCAL_GL_STENCIL_ATTACHMENT,
|
||
LOCAL_GL_RENDERBUFFER, 0);
|
||
|
||
// Call finalize.
|
||
mColorAttachment0.FinalizeAttachment(gl, LOCAL_GL_COLOR_ATTACHMENT0);
|
||
mDepthAttachment.FinalizeAttachment(gl, LOCAL_GL_DEPTH_ATTACHMENT);
|
||
mStencilAttachment.FinalizeAttachment(gl, LOCAL_GL_STENCIL_ATTACHMENT);
|
||
mDepthStencilAttachment.FinalizeAttachment(gl, LOCAL_GL_DEPTH_STENCIL_ATTACHMENT);
|
||
|
||
for (size_t i = 0; i < mMoreColorAttachments.Size(); i++) {
|
||
GLenum attachPoint = LOCAL_GL_COLOR_ATTACHMENT1 + i;
|
||
mMoreColorAttachments[i].FinalizeAttachment(gl, attachPoint);
|
||
}
|
||
|
||
FinalizeDrawAndReadBuffers(gl, mColorAttachment0.IsDefined());
|
||
}
|
||
|
||
bool
|
||
WebGLFramebuffer::ValidateForRead(const char* funcName,
|
||
const webgl::FormatUsageInfo** const out_format,
|
||
uint32_t* const out_width, uint32_t* const out_height)
|
||
{
|
||
if (!ValidateAndInitAttachments(funcName))
|
||
return false;
|
||
|
||
if (mReadBufferMode == LOCAL_GL_NONE) {
|
||
mContext->ErrorInvalidOperation("%s: Read buffer mode must not be NONE.",
|
||
funcName);
|
||
return false;
|
||
}
|
||
|
||
const auto attachPoint = GetAttachPoint(mReadBufferMode);
|
||
if (!attachPoint || !attachPoint->IsDefined()) {
|
||
mContext->ErrorInvalidOperation("%s: The attachment specified for reading is"
|
||
" null.", funcName);
|
||
return false;
|
||
}
|
||
|
||
*out_format = attachPoint->Format();
|
||
attachPoint->Size(out_width, out_height);
|
||
return true;
|
||
}
|
||
|
||
static bool
|
||
AttachmentsDontMatch(const WebGLFBAttachPoint& a, const WebGLFBAttachPoint& b)
|
||
{
|
||
if (a.Texture()) {
|
||
return (a.Texture() != b.Texture());
|
||
}
|
||
|
||
if (a.Renderbuffer()) {
|
||
return (a.Renderbuffer() != b.Renderbuffer());
|
||
}
|
||
|
||
return false;
|
||
}
|
||
|
||
JS::Value
|
||
WebGLFramebuffer::GetAttachmentParameter(const char* funcName, JSContext* cx,
|
||
GLenum target, GLenum attachment,
|
||
GLenum pname, ErrorResult* const out_error)
|
||
{
|
||
auto attachPoint = GetAttachPoint(attachment);
|
||
if (!attachPoint) {
|
||
mContext->ErrorInvalidEnum("%s: Can only query COLOR_ATTACHMENTi,"
|
||
" DEPTH_ATTACHMENT, DEPTH_STENCIL_ATTACHMENT, or"
|
||
" STENCIL_ATTACHMENT for a framebuffer.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
if (mContext->IsWebGL2() && attachment == LOCAL_GL_DEPTH_STENCIL_ATTACHMENT) {
|
||
// There are a couple special rules for this one.
|
||
|
||
if (pname == LOCAL_GL_FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE) {
|
||
mContext->ErrorInvalidOperation("%s: Querying"
|
||
" FRAMEBUFFER_ATTACHMENT_COMPONENT_TYPE"
|
||
" against DEPTH_STENCIL_ATTACHMENT is an"
|
||
" error.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
if (AttachmentsDontMatch(DepthAttachment(), StencilAttachment())) {
|
||
mContext->ErrorInvalidOperation("%s: DEPTH_ATTACHMENT and STENCIL_ATTACHMENT"
|
||
" have different objects bound.",
|
||
funcName);
|
||
return JS::NullValue();
|
||
}
|
||
|
||
attachPoint = GetAttachPoint(LOCAL_GL_DEPTH_ATTACHMENT);
|
||
}
|
||
|
||
FinalizeAttachments();
|
||
|
||
return attachPoint->GetParameter(funcName, mContext, cx, target, attachment, pname,
|
||
out_error);
|
||
}
|
||
|
||
|
||
void
|
||
WebGLFramebuffer::GatherAttachments(std::vector<const WebGLFBAttachPoint*>* const out) const
|
||
{
|
||
auto itr = mDrawBuffers.cbegin();
|
||
if (itr != mDrawBuffers.cend() &&
|
||
*itr != LOCAL_GL_NONE)
|
||
{
|
||
out->push_back(&mColorAttachment0);
|
||
++itr;
|
||
}
|
||
|
||
size_t i = 0;
|
||
for (; itr != mDrawBuffers.cend(); ++itr) {
|
||
if (i >= mMoreColorAttachments.Size())
|
||
break;
|
||
|
||
if (*itr != LOCAL_GL_NONE) {
|
||
out->push_back(&mMoreColorAttachments[i]);
|
||
}
|
||
++i;
|
||
}
|
||
|
||
out->push_back(&mDepthAttachment);
|
||
out->push_back(&mStencilAttachment);
|
||
out->push_back(&mDepthStencilAttachment);
|
||
}
|
||
|
||
////////////////////////////////////////////////////////////////////////////////
|
||
// Goop.
|
||
|
||
JSObject*
|
||
WebGLFramebuffer::WrapObject(JSContext* cx, JS::Handle<JSObject*> givenProto)
|
||
{
|
||
return dom::WebGLFramebufferBinding::Wrap(cx, this, givenProto);
|
||
}
|
||
|
||
inline void
|
||
ImplCycleCollectionUnlink(mozilla::WebGLFBAttachPoint& field)
|
||
{
|
||
field.Unlink();
|
||
}
|
||
|
||
inline void
|
||
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
|
||
mozilla::WebGLFBAttachPoint& field,
|
||
const char* name,
|
||
uint32_t flags = 0)
|
||
{
|
||
CycleCollectionNoteChild(callback, field.Texture(), name, flags);
|
||
CycleCollectionNoteChild(callback, field.Renderbuffer(), name, flags);
|
||
}
|
||
|
||
template<typename C>
|
||
inline void
|
||
ImplCycleCollectionUnlink(C& field)
|
||
{
|
||
for (auto& cur : field) {
|
||
cur.Unlink();
|
||
}
|
||
}
|
||
|
||
template<typename C>
|
||
inline void
|
||
ImplCycleCollectionTraverse(nsCycleCollectionTraversalCallback& callback,
|
||
C& field,
|
||
const char* name,
|
||
uint32_t flags = 0)
|
||
{
|
||
for (auto& cur : field) {
|
||
ImplCycleCollectionTraverse(callback, cur, name, flags);
|
||
}
|
||
}
|
||
|
||
NS_IMPL_CYCLE_COLLECTION_WRAPPERCACHE(WebGLFramebuffer,
|
||
mColorAttachment0,
|
||
mDepthAttachment,
|
||
mStencilAttachment,
|
||
mDepthStencilAttachment,
|
||
mMoreColorAttachments)
|
||
|
||
NS_IMPL_CYCLE_COLLECTION_ROOT_NATIVE(WebGLFramebuffer, AddRef)
|
||
NS_IMPL_CYCLE_COLLECTION_UNROOT_NATIVE(WebGLFramebuffer, Release)
|
||
|
||
} // namespace mozilla
|