| /* |
| * Copyright (C) 2018 Metrological Group B.V. |
| * Copyright (C) 2018, 2019 Igalia S.L. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * |
| * 1. Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * 2. Redistributions in binary form must reproduce the above |
| * copyright notice, this list of conditions and the following |
| * disclaimer in the documentation and/or other materials provided |
| * with the distribution. |
| * |
| * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR |
| * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT |
| * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT |
| * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
| * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
| * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
| * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE |
| * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| */ |
| |
| #include "config.h" |
| #include "NicosiaGCGLANGLELayer.h" |
| |
| #if USE(NICOSIA) && USE(TEXTURE_MAPPER) |
| |
| #include "ANGLEHeaders.h" |
| #include "Logging.h" |
| |
| namespace Nicosia { |
| |
| using namespace WebCore; |
| |
| const char* GCGLANGLELayer::ANGLEContext::errorString(int statusCode) |
| { |
| static_assert(sizeof(int) >= sizeof(EGLint), "EGLint must not be wider than int"); |
| switch (statusCode) { |
| #define CASE_RETURN_STRING(name) case name: return #name |
| // https://www.khronos.org/registry/EGL/sdk/docs/man/html/eglGetError.xhtml |
| CASE_RETURN_STRING(EGL_SUCCESS); |
| CASE_RETURN_STRING(EGL_NOT_INITIALIZED); |
| CASE_RETURN_STRING(EGL_BAD_ACCESS); |
| CASE_RETURN_STRING(EGL_BAD_ALLOC); |
| CASE_RETURN_STRING(EGL_BAD_ATTRIBUTE); |
| CASE_RETURN_STRING(EGL_BAD_CONTEXT); |
| CASE_RETURN_STRING(EGL_BAD_CONFIG); |
| CASE_RETURN_STRING(EGL_BAD_CURRENT_SURFACE); |
| CASE_RETURN_STRING(EGL_BAD_DISPLAY); |
| CASE_RETURN_STRING(EGL_BAD_SURFACE); |
| CASE_RETURN_STRING(EGL_BAD_MATCH); |
| CASE_RETURN_STRING(EGL_BAD_PARAMETER); |
| CASE_RETURN_STRING(EGL_BAD_NATIVE_PIXMAP); |
| CASE_RETURN_STRING(EGL_BAD_NATIVE_WINDOW); |
| CASE_RETURN_STRING(EGL_CONTEXT_LOST); |
| #undef CASE_RETURN_STRING |
| default: return "Unknown EGL error"; |
| } |
| } |
| |
| const char* GCGLANGLELayer::ANGLEContext::lastErrorString() |
| { |
| return errorString(EGL_GetError()); |
| } |
| |
| std::unique_ptr<GCGLANGLELayer::ANGLEContext> GCGLANGLELayer::ANGLEContext::createContext() |
| { |
| EGLDisplay display = EGL_GetDisplay(EGL_DEFAULT_DISPLAY); |
| if (display == EGL_NO_DISPLAY) |
| return nullptr; |
| |
| EGLint majorVersion, minorVersion; |
| if (EGL_Initialize(display, &majorVersion, &minorVersion) == EGL_FALSE) { |
| LOG(WebGL, "EGLDisplay Initialization failed."); |
| return nullptr; |
| } |
| LOG(WebGL, "ANGLE initialised Major: %d Minor: %d", majorVersion, minorVersion); |
| |
| const char* displayExtensions = EGL_QueryString(display, EGL_EXTENSIONS); |
| LOG(WebGL, "Extensions: %s", displayExtensions); |
| |
| EGLConfig config; |
| EGLint configAttributes[] = { |
| EGL_RENDERABLE_TYPE, EGL_OPENGL_ES2_BIT, |
| EGL_RED_SIZE, 8, |
| EGL_GREEN_SIZE, 8, |
| EGL_BLUE_SIZE, 8, |
| EGL_ALPHA_SIZE, 8, |
| EGL_NONE |
| }; |
| EGLint numberConfigsReturned = 0; |
| EGL_ChooseConfig(display, configAttributes, &config, 1, &numberConfigsReturned); |
| if (numberConfigsReturned != 1) { |
| LOG(WebGL, "EGLConfig Initialization failed."); |
| return nullptr; |
| } |
| LOG(WebGL, "Got EGLConfig"); |
| |
| EGL_BindAPI(EGL_OPENGL_ES_API); |
| if (EGL_GetError() != EGL_SUCCESS) { |
| LOG(WebGL, "Unable to bind to OPENGL_ES_API"); |
| return nullptr; |
| } |
| |
| std::vector<EGLint> contextAttributes; |
| contextAttributes.push_back(EGL_CONTEXT_CLIENT_VERSION); |
| contextAttributes.push_back(2); |
| contextAttributes.push_back(EGL_CONTEXT_WEBGL_COMPATIBILITY_ANGLE); |
| contextAttributes.push_back(EGL_TRUE); |
| contextAttributes.push_back(EGL_EXTENSIONS_ENABLED_ANGLE); |
| contextAttributes.push_back(EGL_TRUE); |
| if (strstr(displayExtensions, "EGL_ANGLE_power_preference")) { |
| contextAttributes.push_back(EGL_POWER_PREFERENCE_ANGLE); |
| // EGL_LOW_POWER_ANGLE is the default. Change to |
| // EGL_HIGH_POWER_ANGLE if desired. |
| contextAttributes.push_back(EGL_LOW_POWER_ANGLE); |
| } |
| contextAttributes.push_back(EGL_NONE); |
| |
| EGLContext context = EGL_CreateContext(display, config, EGL_NO_CONTEXT, contextAttributes.data()); |
| if (context == EGL_NO_CONTEXT) { |
| LOG(WebGL, "EGLContext Initialization failed."); |
| return nullptr; |
| } |
| LOG(WebGL, "Got EGLContext"); |
| |
| return std::unique_ptr<ANGLEContext>(new ANGLEContext(display, context, EGL_NO_SURFACE)); |
| } |
| |
| GCGLANGLELayer::ANGLEContext::ANGLEContext(EGLDisplay display, EGLContext context, EGLSurface surface) |
| : m_display(display) |
| , m_context(context) |
| , m_surface(surface) |
| { |
| } |
| |
| GCGLANGLELayer::ANGLEContext::~ANGLEContext() |
| { |
| if (m_context) { |
| gl::BindFramebuffer(GL_FRAMEBUFFER, 0); |
| EGL_MakeCurrent(m_display, EGL_NO_SURFACE, EGL_NO_SURFACE, EGL_NO_CONTEXT); |
| EGL_DestroyContext(m_display, m_context); |
| } |
| |
| if (m_surface) |
| EGL_DestroySurface(m_display, m_surface); |
| } |
| |
| bool GCGLANGLELayer::ANGLEContext::makeContextCurrent() |
| { |
| ASSERT(m_context); |
| |
| if (EGL_GetCurrentContext() != m_context) |
| return EGL_MakeCurrent(m_display, m_surface, m_surface, m_context); |
| return true; |
| } |
| |
| PlatformGraphicsContextGL GCGLANGLELayer::ANGLEContext::platformContext() const |
| { |
| return m_context; |
| } |
| |
| GCGLANGLELayer::GCGLANGLELayer(GraphicsContextGLOpenGL& context) |
| : GCGLLayer(context) |
| , m_angleContext(ANGLEContext::createContext()) |
| { |
| } |
| |
| GCGLANGLELayer::~GCGLANGLELayer() |
| { |
| } |
| |
| bool GCGLANGLELayer::makeContextCurrent() |
| { |
| ASSERT(m_angleContext); |
| return m_angleContext->makeContextCurrent(); |
| |
| } |
| |
| PlatformGraphicsContextGL GCGLANGLELayer::platformContext() const |
| { |
| ASSERT(m_angleContext); |
| return m_angleContext->platformContext(); |
| } |
| |
| } // namespace Nicosia |
| |
| #endif // USE(NICOSIA) && USE(TEXTURE_MAPPER) |