/* -*- 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