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-rw-r--r--widget/cocoa/RectTextureImage.mm171
1 files changed, 171 insertions, 0 deletions
diff --git a/widget/cocoa/RectTextureImage.mm b/widget/cocoa/RectTextureImage.mm
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+++ b/widget/cocoa/RectTextureImage.mm
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+/* -*- Mode: objc; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* 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 "RectTextureImage.h"
+
+#include "gfxUtils.h"
+#include "GLContextCGL.h"
+#include "mozilla/layers/GLManager.h"
+#include "mozilla/gfx/MacIOSurface.h"
+#include "OGLShaderProgram.h"
+#include "ScopedGLHelpers.h"
+
+namespace mozilla {
+namespace widget {
+
+RectTextureImage::RectTextureImage()
+ : mGLContext(nullptr)
+ , mTexture(0)
+ , mInUpdate(false)
+{
+}
+
+RectTextureImage::~RectTextureImage()
+{
+ DeleteTexture();
+}
+
+already_AddRefed<gfx::DrawTarget>
+RectTextureImage::BeginUpdate(const LayoutDeviceIntSize& aNewSize,
+ const LayoutDeviceIntRegion& aDirtyRegion)
+{
+ MOZ_ASSERT(!mInUpdate, "Beginning update during update!");
+ mUpdateRegion = aDirtyRegion;
+ bool needRecreate = false;
+ if (aNewSize != mBufferSize) {
+ mBufferSize = aNewSize;
+ mUpdateRegion =
+ LayoutDeviceIntRect(LayoutDeviceIntPoint(0, 0), aNewSize);
+ needRecreate = true;
+ }
+
+ if (mUpdateRegion.IsEmpty()) {
+ return nullptr;
+ }
+
+ if (!mIOSurface || needRecreate) {
+ DeleteTexture();
+ mIOSurface = MacIOSurface::CreateIOSurface(mBufferSize.width,
+ mBufferSize.height);
+
+ if (!mIOSurface) {
+ return nullptr;
+ }
+ }
+
+ mInUpdate = true;
+
+ mIOSurface->Lock(false);
+ unsigned char* ioData = (unsigned char*)mIOSurface->GetBaseAddress();
+ gfx::IntSize size(mBufferSize.width, mBufferSize.height);
+ int32_t stride = mIOSurface->GetBytesPerRow();
+ gfx::SurfaceFormat format = gfx::SurfaceFormat::B8G8R8A8;
+ RefPtr<gfx::DrawTarget> drawTarget =
+ gfx::Factory::CreateDrawTargetForData(gfx::BackendType::SKIA,
+ ioData, size,
+ stride, format);
+ return drawTarget.forget();
+}
+
+void
+RectTextureImage::EndUpdate()
+{
+ MOZ_ASSERT(mInUpdate, "Ending update while not in update");
+ mIOSurface->Unlock(false);
+ mInUpdate = false;
+}
+
+void
+RectTextureImage::UpdateFromCGContext(const LayoutDeviceIntSize& aNewSize,
+ const LayoutDeviceIntRegion& aDirtyRegion,
+ CGContextRef aCGContext)
+{
+ gfx::IntSize size = gfx::IntSize(CGBitmapContextGetWidth(aCGContext),
+ CGBitmapContextGetHeight(aCGContext));
+ RefPtr<gfx::DrawTarget> dt = BeginUpdate(aNewSize, aDirtyRegion);
+ if (dt) {
+ gfx::Rect rect(0, 0, size.width, size.height);
+ gfxUtils::ClipToRegion(dt, GetUpdateRegion().ToUnknownRegion());
+ RefPtr<gfx::SourceSurface> sourceSurface =
+ dt->CreateSourceSurfaceFromData(static_cast<uint8_t *>(CGBitmapContextGetData(aCGContext)),
+ size,
+ CGBitmapContextGetBytesPerRow(aCGContext),
+ gfx::SurfaceFormat::B8G8R8A8);
+ dt->DrawSurface(sourceSurface, rect, rect,
+ gfx::DrawSurfaceOptions(),
+ gfx::DrawOptions(1.0, gfx::CompositionOp::OP_SOURCE));
+ dt->PopClip();
+ EndUpdate();
+ }
+}
+
+void
+RectTextureImage::Draw(layers::GLManager* aManager,
+ const LayoutDeviceIntPoint& aLocation,
+ const gfx::Matrix4x4& aTransform)
+{
+ gl::GLContext* gl = aManager->gl();
+
+ BindIOSurfaceToTexture(gl);
+
+ layers::ShaderProgramOGL* program =
+ aManager->GetProgram(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+ gfx::SurfaceFormat::R8G8B8A8);
+
+ gl->fActiveTexture(LOCAL_GL_TEXTURE0);
+ gl::ScopedBindTexture texture(gl, mTexture, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
+
+ aManager->ActivateProgram(program);
+ program->SetProjectionMatrix(aManager->GetProjMatrix());
+ program->SetLayerTransform(gfx::Matrix4x4(aTransform).PostTranslate(aLocation.x, aLocation.y, 0));
+ program->SetTextureTransform(gfx::Matrix4x4());
+ program->SetRenderOffset(nsIntPoint(0, 0));
+ program->SetTexCoordMultiplier(mBufferSize.width, mBufferSize.height);
+ program->SetTextureUnit(0);
+
+ aManager->BindAndDrawQuad(program,
+ gfx::Rect(0.0, 0.0, mBufferSize.width, mBufferSize.height),
+ gfx::Rect(0.0, 0.0, 1.0f, 1.0f));
+}
+
+void
+RectTextureImage::DeleteTexture()
+{
+ if (mTexture) {
+ MOZ_ASSERT(mGLContext);
+ mGLContext->MakeCurrent();
+ mGLContext->fDeleteTextures(1, &mTexture);
+ mTexture = 0;
+ }
+}
+
+void
+RectTextureImage::BindIOSurfaceToTexture(gl::GLContext* aGL)
+{
+ if (!mTexture) {
+ MOZ_ASSERT(aGL);
+ aGL->fGenTextures(1, &mTexture);
+ aGL->fActiveTexture(LOCAL_GL_TEXTURE0);
+ gl::ScopedBindTexture texture(aGL, mTexture, LOCAL_GL_TEXTURE_RECTANGLE_ARB);
+ aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+ LOCAL_GL_TEXTURE_MIN_FILTER,
+ LOCAL_GL_LINEAR);
+ aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+ LOCAL_GL_TEXTURE_MAG_FILTER,
+ LOCAL_GL_LINEAR);
+ aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+ LOCAL_GL_TEXTURE_WRAP_T,
+ LOCAL_GL_CLAMP_TO_EDGE);
+ aGL->fTexParameteri(LOCAL_GL_TEXTURE_RECTANGLE_ARB,
+ LOCAL_GL_TEXTURE_WRAP_S,
+ LOCAL_GL_CLAMP_TO_EDGE);
+
+ mIOSurface->CGLTexImageIOSurface2D(gl::GLContextCGL::Cast(aGL)->GetCGLContext());
+ mGLContext = aGL;
+ }
+}
+
+} // namespace widget
+} // namespace mozilla