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/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "TextureImageEGL.h"
#include "GLLibraryEGL.h"
#include "GLContext.h"
#include "GLUploadHelpers.h"
#include "gfxPlatform.h"
#include "mozilla/gfx/Types.h"
namespace mozilla {
namespace gl {
static GLenum
GLFormatForImage(gfx::SurfaceFormat aFormat)
{
switch (aFormat) {
case gfx::SurfaceFormat::B8G8R8A8:
case gfx::SurfaceFormat::B8G8R8X8:
return LOCAL_GL_RGBA;
case gfx::SurfaceFormat::R5G6B5_UINT16:
return LOCAL_GL_RGB;
case gfx::SurfaceFormat::A8:
return LOCAL_GL_LUMINANCE;
default:
NS_WARNING("Unknown GL format for Surface format");
}
return 0;
}
static GLenum
GLTypeForImage(gfx::SurfaceFormat aFormat)
{
switch (aFormat) {
case gfx::SurfaceFormat::B8G8R8A8:
case gfx::SurfaceFormat::B8G8R8X8:
case gfx::SurfaceFormat::A8:
return LOCAL_GL_UNSIGNED_BYTE;
case gfx::SurfaceFormat::R5G6B5_UINT16:
return LOCAL_GL_UNSIGNED_SHORT_5_6_5;
default:
NS_WARNING("Unknown GL format for Surface format");
}
return 0;
}
TextureImageEGL::TextureImageEGL(GLuint aTexture,
const gfx::IntSize& aSize,
GLenum aWrapMode,
ContentType aContentType,
GLContext* aContext,
Flags aFlags,
TextureState aTextureState,
TextureImage::ImageFormat aImageFormat)
: TextureImage(aSize, aWrapMode, aContentType, aFlags)
, mGLContext(aContext)
, mUpdateFormat(gfx::ImageFormatToSurfaceFormat(aImageFormat))
, mEGLImage(nullptr)
, mTexture(aTexture)
, mSurface(nullptr)
, mConfig(nullptr)
, mTextureState(aTextureState)
, mBound(false)
{
if (mUpdateFormat == gfx::SurfaceFormat::UNKNOWN) {
mUpdateFormat =
gfxPlatform::GetPlatform()->Optimal2DFormatForContent(GetContentType());
}
if (mUpdateFormat == gfx::SurfaceFormat::R5G6B5_UINT16) {
mTextureFormat = gfx::SurfaceFormat::R8G8B8X8;
} else if (mUpdateFormat == gfx::SurfaceFormat::B8G8R8X8) {
mTextureFormat = gfx::SurfaceFormat::B8G8R8X8;
} else {
mTextureFormat = gfx::SurfaceFormat::B8G8R8A8;
}
}
TextureImageEGL::~TextureImageEGL()
{
if (mGLContext->IsDestroyed() || !mGLContext->IsOwningThreadCurrent()) {
return;
}
// If we have a context, then we need to delete the texture;
// if we don't have a context (either real or shared),
// then they went away when the contex was deleted, because it
// was the only one that had access to it.
if (mGLContext->MakeCurrent()) {
mGLContext->fDeleteTextures(1, &mTexture);
}
ReleaseTexImage();
DestroyEGLSurface();
}
bool
TextureImageEGL::DirectUpdate(gfx::DataSourceSurface* aSurf, const nsIntRegion& aRegion, const gfx::IntPoint& aFrom /* = gfx::IntPoint(0,0) */)
{
gfx::IntRect bounds = aRegion.GetBounds();
nsIntRegion region;
if (mTextureState != Valid) {
bounds = gfx::IntRect(0, 0, mSize.width, mSize.height);
region = nsIntRegion(bounds);
} else {
region = aRegion;
}
bool needInit = mTextureState == Created;
size_t uploadSize = 0;
mTextureFormat =
UploadSurfaceToTexture(mGLContext,
aSurf,
region,
mTexture,
mSize,
&uploadSize,
needInit,
aFrom);
if (uploadSize > 0) {
UpdateUploadSize(uploadSize);
}
mTextureState = Valid;
return true;
}
void
TextureImageEGL::BindTexture(GLenum aTextureUnit)
{
// Ensure the texture is allocated before it is used.
if (mTextureState == Created) {
Resize(mSize);
}
mGLContext->fActiveTexture(aTextureUnit);
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fActiveTexture(LOCAL_GL_TEXTURE0);
}
void
TextureImageEGL::Resize(const gfx::IntSize& aSize)
{
if (mSize == aSize && mTextureState != Created)
return;
mGLContext->fBindTexture(LOCAL_GL_TEXTURE_2D, mTexture);
mGLContext->fTexImage2D(LOCAL_GL_TEXTURE_2D,
0,
GLFormatForImage(mUpdateFormat),
aSize.width,
aSize.height,
0,
GLFormatForImage(mUpdateFormat),
GLTypeForImage(mUpdateFormat),
nullptr);
mTextureState = Allocated;
mSize = aSize;
}
bool
TextureImageEGL::BindTexImage()
{
if (mBound && !ReleaseTexImage())
return false;
EGLBoolean success =
sEGLLibrary.fBindTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = true;
return true;
}
bool
TextureImageEGL::ReleaseTexImage()
{
if (!mBound)
return true;
EGLBoolean success =
sEGLLibrary.fReleaseTexImage(EGL_DISPLAY(),
(EGLSurface)mSurface,
LOCAL_EGL_BACK_BUFFER);
if (success == LOCAL_EGL_FALSE)
return false;
mBound = false;
return true;
}
void
TextureImageEGL::DestroyEGLSurface(void)
{
if (!mSurface)
return;
sEGLLibrary.fDestroySurface(EGL_DISPLAY(), mSurface);
mSurface = nullptr;
}
already_AddRefed<TextureImage>
CreateTextureImageEGL(GLContext* gl,
const gfx::IntSize& aSize,
TextureImage::ContentType aContentType,
GLenum aWrapMode,
TextureImage::Flags aFlags,
TextureImage::ImageFormat aImageFormat)
{
RefPtr<TextureImage> t = new gl::TiledTextureImage(gl, aSize, aContentType, aFlags, aImageFormat);
return t.forget();
}
already_AddRefed<TextureImage>
TileGenFuncEGL(GLContext* gl,
const gfx::IntSize& aSize,
TextureImage::ContentType aContentType,
TextureImage::Flags aFlags,
TextureImage::ImageFormat aImageFormat)
{
gl->MakeCurrent();
GLuint texture;
gl->fGenTextures(1, &texture);
RefPtr<TextureImageEGL> teximage =
new TextureImageEGL(texture, aSize, LOCAL_GL_CLAMP_TO_EDGE, aContentType,
gl, aFlags, TextureImage::Created, aImageFormat);
teximage->BindTexture(LOCAL_GL_TEXTURE0);
GLint texfilter = aFlags & TextureImage::UseNearestFilter ? LOCAL_GL_NEAREST : LOCAL_GL_LINEAR;
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MIN_FILTER, texfilter);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_MAG_FILTER, texfilter);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_S, LOCAL_GL_CLAMP_TO_EDGE);
gl->fTexParameteri(LOCAL_GL_TEXTURE_2D, LOCAL_GL_TEXTURE_WRAP_T, LOCAL_GL_CLAMP_TO_EDGE);
return teximage.forget();
}
} // namespace gl
} // namespace mozilla
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