gram@google.com
686e35e638
Also updated to work with recent Skia CL 7640. Review URL: https://codereview.chromium.org//12212074 git-svn-id: https://dart.googlecode.com/svn/branches/bleeding_edge/dart@18279 260f80e4-7a28-3924-810f-c04153c831b5
97 lines
2.9 KiB
C++
97 lines
2.9 KiB
C++
// Copyright (c) 2013, the Dart project authors. Please see the AUTHORS file
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// for details. All rights reserved. Use of this source code is governed by a
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// BSD-style license that can be found in the LICENSE file.
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#include "embedders/openglui/common/graphics_handler.h"
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#include "embedders/openglui/common/canvas_context.h"
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#include "embedders/openglui/common/log.h"
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extern void CheckGLError(const char *function);
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GraphicsHandler* graphics;
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GraphicsHandler::GraphicsHandler()
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: ag(),
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grcontext(NULL),
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width_(0),
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height_(0) {
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graphics = this;
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}
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// Kludge to get around an issue with Android emulator, which returns
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// NULL for the shader language version, causing Skia to blow up.
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const GrGLubyte* myGLGetString(GLenum name) {
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const GrGLubyte* str = glGetString(name);
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if (NULL == str && GL_SHADING_LANGUAGE_VERSION == name) {
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return reinterpret_cast<GrGLubyte*>(
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const_cast<char*>("OpenGL ES GLSL ES 1.0"));
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} else {
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return str;
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}
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}
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int32_t GraphicsHandler::Start() {
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SkGraphics::Init();
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GrGLInterface* fGL = const_cast<GrGLInterface*>(GrGLCreateNativeInterface());
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LOGI("Created native interface %s\n", fGL ? "succeeded" : "failed");
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fGL->fGetString = myGLGetString;
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grcontext = GrContext::Create(kOpenGL_GrBackend, (GrBackendContext)fGL);
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LOGI("Created GrContext %s\n", grcontext ? "succeeded" : "failed");
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return 0;
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}
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void GraphicsHandler::Stop() {
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SkGraphics::Term();
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}
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SkCanvas* GraphicsHandler::CreateDisplayCanvas() {
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GrBackendRenderTargetDesc desc;
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desc.fWidth = width_;
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desc.fHeight = height_;
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desc.fConfig = kSkia8888_GrPixelConfig;
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desc.fOrigin = kBottomLeft_GrSurfaceOrigin;
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glGetIntegerv(GL_SAMPLES, &desc.fSampleCnt);
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glGetIntegerv(GL_STENCIL_BITS, &desc.fStencilBits);
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LOGI("Creating %dx%d display canvas, samples %d, stencil bits %d",
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width_, height_, desc.fSampleCnt, desc.fStencilBits);
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GrGLint buffer;
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glGetIntegerv(GL_FRAMEBUFFER_BINDING, &buffer);
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desc.fRenderTargetHandle = buffer;
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GrRenderTarget* fGrRenderTarget = grcontext->wrapBackendRenderTarget(desc);
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SkGpuDevice* device = new SkGpuDevice(grcontext, fGrRenderTarget);
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// fGrRenderTarget->unref(); // TODO(gram): determine if we need this.
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SkCanvas* canvas = new SkCanvas(device);
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device->unref();
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return canvas;
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}
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SkCanvas* GraphicsHandler::CreateBitmapCanvas(int width, int height) {
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LOGI("Creating %dx%d bitmap canvas", width, height);
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SkDevice* rasterDevice =
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new SkDevice(SkBitmap::kARGB_8888_Config, width, height);
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SkCanvas* canvas = new SkCanvas(rasterDevice);
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rasterDevice->unref();
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return canvas;
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}
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void GraphicsHandler::SetViewport(int left, int top, int width, int height) {
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width_ = width;
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height_ = height;
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glViewport(left, top, width, height);
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CheckGLError("glViewPort");
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}
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int32_t GraphicsHandler::Update() {
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extern CanvasContext* display_context;
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if (display_context != NULL) {
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LOGI("Flushing display context\n");
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display_context->Flush();
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}
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SwapBuffers();
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return 0;
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}
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