diff options
Diffstat (limited to 'gpu/gles2_conform_support/native/egl_native_linux.cc')
-rw-r--r-- | gpu/gles2_conform_support/native/egl_native_linux.cc | 121 |
1 files changed, 121 insertions, 0 deletions
diff --git a/gpu/gles2_conform_support/native/egl_native_linux.cc b/gpu/gles2_conform_support/native/egl_native_linux.cc new file mode 100644 index 0000000..a356e61 --- /dev/null +++ b/gpu/gles2_conform_support/native/egl_native_linux.cc @@ -0,0 +1,121 @@ +// Copyright (c) 2011 The Chromium Authors. All rights reserved. +// Use of this source code is governed by a BSD-style license that can be +// found in the LICENSE file. + +#include <EGL/egl.h> +#include <EGL/eglext.h> +#include <gdk/gdkx.h> +#include <gtk/gtk.h> + +extern "C" { +#if defined(GLES2_CONFORM_SUPPORT_ONLY) +#include "gpu/gles2_conform_support/gtf/gtf_stubs.h" +#else +#include "third_party/gles2_conform/GTF_ES/glsl/GTF/Source/eglNative.h" +#endif +} + + +GTFbool GTFNativeCreateDisplay(EGLNativeDisplayType *pNativeDisplay) { + int argc = 0; + char **argv = NULL; + gtk_init(&argc, &argv); + *pNativeDisplay = GDK_DISPLAY();; + return *pNativeDisplay ? GTFtrue : GTFfalse; +} + +void GTFNativeDestroyDisplay(EGLNativeDisplayType nativeDisplay) { + gtk_exit(0); +} + +GTFbool GTFNativeCreateWindow(EGLNativeDisplayType nativeDisplay, + EGLDisplay eglDisplay, EGLConfig eglConfig, + const char* title, int width, int height, + EGLNativeWindowType *pNativeWindow) { +#ifdef CHROMEOS_GLES2_CONFORMANCE + // Due to the behavior of ChromeOS window manager, which always resize the + // top level window etc, we had to create a popup window. + GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_POPUP); +#else + GtkWidget* hwnd = gtk_window_new(GTK_WINDOW_TOPLEVEL); +#endif + + gtk_window_set_title(GTK_WINDOW(hwnd), title); + gtk_window_set_default_size(GTK_WINDOW(hwnd), width, height); + gtk_widget_set_double_buffered(hwnd, FALSE); + gtk_widget_set_app_paintable(hwnd, TRUE); + + // We had to enter gtk main loop to realize the window on ChromeOS. + gtk_widget_show_now(hwnd); + + *pNativeWindow = GDK_WINDOW_XWINDOW(hwnd->window); + + return GTFtrue; +} + +void GTFNativeDestroyWindow(EGLNativeDisplayType nativeDisplay, + EGLNativeWindowType nativeWindow) { + GdkWindow* window = gdk_window_lookup(nativeWindow); + gpointer widget = NULL; + gdk_window_get_user_data(window, &widget); + gtk_widget_destroy(GTK_WIDGET(widget)); +} + +EGLImageKHR GTFCreateEGLImage(int width, int height, + GLenum format, GLenum type) { + PFNEGLCREATEIMAGEKHRPROC egl_create_image_khr_; + egl_create_image_khr_ = reinterpret_cast<PFNEGLCREATEIMAGEKHRPROC> + (eglGetProcAddress("eglCreateImageKHR")); + + static const EGLint attrib[] = { + EGL_IMAGE_PRESERVED_KHR, EGL_TRUE, + EGL_GL_TEXTURE_LEVEL_KHR, 0, + EGL_NONE + }; + + if (format != GL_RGBA && format != GL_RGB) + return static_cast<EGLImageKHR>(NULL); + + if (type != GL_UNSIGNED_BYTE) + return static_cast<EGLImageKHR>(NULL); + + GLuint texture; + glGenTextures(1, &texture); + glBindTexture(GL_TEXTURE_2D, texture); + glTexImage2D(GL_TEXTURE_2D, + 0, + format, + width, + height, + 0, + format, + type, + NULL); + + // Disable mip-maps because we do not require it. + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); + glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); + + if(glGetError() != GL_NO_ERROR) + return static_cast<EGLImageKHR>(NULL); + + EGLImageKHR egl_image = + egl_create_image_khr_(eglGetCurrentDisplay(), + eglGetCurrentContext(), + EGL_GL_TEXTURE_2D_KHR, + reinterpret_cast<EGLClientBuffer>(texture), + attrib); + + if (eglGetError() == EGL_SUCCESS) + return egl_image; + else + return static_cast<EGLImageKHR>(NULL); +} + +void GTFDestroyEGLImage(EGLImageKHR image) { + PFNEGLDESTROYIMAGEKHRPROC egl_destroy_image_khr_; + egl_destroy_image_khr_ = reinterpret_cast<PFNEGLDESTROYIMAGEKHRPROC> + (eglGetProcAddress("eglDestroyImageKHR")); + + egl_destroy_image_khr_(eglGetCurrentDisplay(), image); +} |