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b42405a [GTK3][OpenGL] Support OpenGL GTK3 new API with test codes
mqcmd196c035d93 [GTK3][OpenGL] Add OpenGL 3.2 example
mqcmd19628fb35c [GTK3][OpenGL] Remove message debug in cmake
mqcmd19674c1fcb Got rid of libglm dependency.
asmorkalovb977644 [GTK3][OpenGL] remove exmaple test code
mqcmd196b9b912e [GTK3][OpenGL] remove libepoxy from gtk highgui
mqcmd1961742657 [example][OpenGL3.2] replace lena.jpg with HappyFish.jpg
mqcmd19641efb5b remove libepoxy from all
mqcmd196c76cdb4 Warnings fix.
asmorkalov8ca3ec1 Skip new sample if libepoxy was not found.
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[GTK3][OpenGL] Support OpenGL GTK3 new API with test codes
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commitb42405a42e04d8567e6084cc1d70bf333f527ad3
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7 changes: 6 additions & 1 deletionCMakeLists.txt
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1464,9 +1464,14 @@ if(WITH_GTK OR HAVE_GTK) | ||
| else() | ||
| status(" GTK+:" "NO") | ||
| endif() | ||
| if(HAVE_GTK) | ||
| status( " GThread :" HAVE_GTHREAD THEN "YES (ver ${GTHREAD_VERSION})" ELSE NO) | ||
| if(HAVE_GTK3) | ||
| status( " Epoxy:" HAVE_EPOXY THEN "YES (ver ${EPOXY_VERSION})" ELSE NO) | ||
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| else() | ||
| status( " GtkGlExt:" HAVE_GTKGLEXT THEN "YES (ver ${GTKGLEXT_VERSION})" ELSE NO) | ||
| endif() | ||
| endif() | ||
| endif() | ||
2 changes: 1 addition & 1 deletioncmake/OpenCVFindLibsGUI.cmake
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -62,7 +62,7 @@ endif() | ||
| # --- OpenGl --- | ||
| ocv_clear_vars(HAVE_OPENGL HAVE_QT_OPENGL) | ||
| if(WITH_OPENGL) | ||
| if(WITH_WIN32UI OR (HAVE_QT AND QT_QTOPENGL_FOUND) OR(HAVE_GTK3 AND HAVE_EPOXY) OR (HAVE_GTK AND NOT HAVE_GTK3 ANDHAVE_GTKGLEXT)) | ||
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| find_package (OpenGL QUIET) | ||
| if(OPENGL_FOUND) | ||
| set(HAVE_OPENGL TRUE) | ||
2 changes: 1 addition & 1 deletionmodules/core/include/opencv2/core/opengl.hpp
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8 changes: 8 additions & 0 deletionsmodules/highgui/CMakeLists.txt
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35 changes: 22 additions & 13 deletionsmodules/highgui/cmake/detect_gtk.cmake
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109 changes: 97 additions & 12 deletionsmodules/highgui/src/window_gtk.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -46,10 +46,7 @@ | ||
| #include <gtk/gtk.h> | ||
| #if (GTK_MAJOR_VERSION == 2) && defined(HAVE_OPENGL) && !defined(HAVE_GTKGLEXT) | ||
| #undef HAVE_OPENGL // gtkglext is required | ||
| #endif | ||
| @@ -68,9 +65,14 @@ | ||
| #endif | ||
| #ifdef HAVE_OPENGL | ||
| #ifdef GTK_VERSION3 | ||
| #include <gtk/gtkglarea.h> | ||
| #include <epoxy/gl.h> | ||
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| #else | ||
| #include <gtk/gtkgl.h> | ||
| #include <GL/glu.h> | ||
| #endif | ||
| #include <GL/gl.h> | ||
| #endif | ||
| #include <opencv2/core/utils/logger.hpp> | ||
| @@ -570,7 +572,7 @@ struct CvWindow : CvUIBase | ||
| last_key(0), flags(0), status(0), | ||
| on_mouse(NULL), on_mouse_param(NULL) | ||
| #ifdef HAVE_OPENGL | ||
| ,useGl(false), glDrawCallback(NULL), glDrawData(NULL), glArea(NULL) | ||
| #endif | ||
| { | ||
| CV_LOG_INFO(NULL, "OpenCV/UI: creating GTK window: " << window_name); | ||
| @@ -597,6 +599,7 @@ struct CvWindow : CvUIBase | ||
| CvOpenGlDrawCallback glDrawCallback; | ||
| void* glDrawData; | ||
| GtkWidget* glArea; | ||
| #endif | ||
| }; | ||
| @@ -640,7 +643,7 @@ CV_IMPL int cvInitSystem( int argc, char** argv ) | ||
| setlocale(LC_NUMERIC,"C"); | ||
| #if defined(HAVE_OPENGL) && not defined(GTK_VERSION3) // GTK3+ uses GtkGLArea so no need to check for GtkGLExt | ||
| if (!gtk_gl_init_check(&argc, &argv)) | ||
| { | ||
| hasError = true; | ||
| @@ -907,11 +910,40 @@ double cvGetOpenGlProp_GTK(const char* name) | ||
| // OpenGL support | ||
| #ifdef HAVE_OPENGL | ||
| namespace | ||
| { | ||
| #ifdef GTK_VERSION3 | ||
| void glRealizeCallback(GtkGLArea* area, gpointer user_data){ | ||
| gtk_gl_area_make_current(area); | ||
| if (gtk_gl_area_get_error(area) != NULL) | ||
| CV_Error(cv::Error::OpenGlApiCallError, "OpenGL context is not initialized"); | ||
| } | ||
| gboolean glRenderCallback(GtkGLArea* area, GdkGLContext* context, gpointer user_data){ | ||
| CvWindow* window = (CvWindow*)user_data; | ||
| gtk_gl_area_make_current(area); | ||
| if (gtk_gl_area_get_error(area) != NULL) { | ||
| CV_Error(cv::Error::OpenGlApiCallError, "OpenGL context is not initialized"); | ||
| return FALSE; | ||
| } | ||
| if(window->glDrawCallback) { | ||
| window->glDrawCallback(window->glDrawData); | ||
| } | ||
| // gtk_gl_area_queue_render(area); | ||
| return TRUE; | ||
| } | ||
| #endif | ||
| void createGlContext(CvWindow* window) | ||
| { | ||
| #ifdef GTK_VERSION3 | ||
| g_signal_connect(window->glArea, "realize", G_CALLBACK(glRealizeCallback), window); | ||
| g_signal_connect(window->glArea, "render", G_CALLBACK(glRenderCallback), window); | ||
| #else | ||
| GdkGLConfig* glconfig; | ||
| // Try double-buffered visual | ||
| @@ -923,11 +955,24 @@ namespace | ||
| if (!gtk_widget_set_gl_capability(window->widget, glconfig, NULL, TRUE, GDK_GL_RGBA_TYPE)) | ||
| CV_Error( cv::Error::OpenGlApiCallError, "Can't Create A GL Device Context" ); | ||
| #endif | ||
| window->useGl = true; | ||
| } | ||
| void drawGl(CvWindow* window) | ||
| { | ||
| #ifdef GTK_VERSION3 | ||
| GtkGLArea* gtkGlArea = GTK_GL_AREA(window->glArea); | ||
| if (gtk_gl_area_get_error(gtkGlArea) != NULL) | ||
| CV_Error(cv::Error::OpenGlApiCallError, "Can't Activate The GL Rendering Context"); | ||
| if (window->glDrawCallback) | ||
| window->glDrawCallback(window->glDrawData); | ||
| #else | ||
| GdkGLContext* glcontext = gtk_widget_get_gl_context(window->widget); | ||
| GdkGLDrawable* gldrawable = gtk_widget_get_gl_drawable(window->widget); | ||
| @@ -947,6 +992,8 @@ namespace | ||
| glFlush(); | ||
| gdk_gl_drawable_gl_end(gldrawable); | ||
| #endif | ||
| } | ||
| } | ||
| @@ -1041,12 +1088,27 @@ static std::shared_ptr<CvWindow> namedWindow_(const std::string& name, int flags | ||
| window->frame = gtk_window_new( GTK_WINDOW_TOPLEVEL ); | ||
| window->widget = cvImageWidgetNew( flags ); | ||
| #if defined(HAVE_OPENGL) && defined(GTK_VERSION3) | ||
| if (flags & cv::WINDOW_OPENGL) { | ||
| window->glArea = gtk_gl_area_new(); | ||
| gtk_container_add(GTK_CONTAINER(window->frame), window->glArea); | ||
| gtk_widget_show(window->glArea); | ||
| } else { | ||
| window->paned = gtk_vbox_new( FALSE, 0 ); | ||
| gtk_box_pack_end( GTK_BOX(window->paned), window->widget, TRUE, TRUE, 0 ); | ||
| gtk_widget_show( window->widget ); | ||
| gtk_container_add( GTK_CONTAINER(window->frame), window->paned ); | ||
| gtk_widget_show( window->paned ); | ||
| } | ||
| #else | ||
| window->paned = gtk_vbox_new( FALSE, 0 ); | ||
| gtk_box_pack_end( GTK_BOX(window->paned), window->widget, TRUE, TRUE, 0 ); | ||
| gtk_widget_show( window->widget ); | ||
| gtk_container_add( GTK_CONTAINER(window->frame), window->paned ); | ||
| gtk_widget_show( window->paned ); | ||
| #endif | ||
| #ifndef HAVE_OPENGL | ||
| if (flags & cv::WINDOW_OPENGL) | ||
| @@ -1122,9 +1184,6 @@ static std::shared_ptr<CvWindow> namedWindow_(const std::string& name, int flags | ||
| CV_IMPL void cvSetOpenGlContext(const char* name) | ||
| { | ||
| CV_Assert(name && "NULL name string"); | ||
| CV_LOCK_MUTEX(); | ||
| @@ -1136,11 +1195,24 @@ CV_IMPL void cvSetOpenGlContext(const char* name) | ||
| if (!window->useGl) | ||
| CV_Error( cv::Error::OpenGlNotSupported, "Window doesn't support OpenGL" ); | ||
| #ifdef GTK_VERSION3 | ||
| if(gtk_gl_area_get_error(GTK_GL_AREA(window->glArea)) != NULL) | ||
| CV_Error( cv::Error::OpenGlApiCallError, "Can't Activate The GL Rendering Context"); | ||
| #else | ||
| GdkGLContext* glcontext; | ||
| GdkGLDrawable* gldrawable; | ||
| glcontext = gtk_widget_get_gl_context(window->widget); | ||
| gldrawable = gtk_widget_get_gl_drawable(window->widget); | ||
| if (!gdk_gl_drawable_make_current(gldrawable, glcontext)) | ||
| CV_Error( cv::Error::OpenGlApiCallError, "Can't Activate The GL Rendering Context" ); | ||
| #endif | ||
| } | ||
| CV_IMPL void cvUpdateWindow(const char* name) | ||
| @@ -1154,7 +1226,20 @@ CV_IMPL void cvUpdateWindow(const char* name) | ||
| return; | ||
| // window does not refresh without this | ||
| #ifdef GTK_VERSION3 | ||
| if ( GTK_IS_GL_AREA(window->glArea) ){ | ||
| gtk_gl_area_queue_render(GTK_GL_AREA(window->glArea)); | ||
| } else { | ||
| gtk_widget_queue_draw( GTK_WIDGET(window->widget)); | ||
| } | ||
| #else | ||
| gtk_widget_queue_draw( GTK_WIDGET(window->widget) ); | ||
| #endif | ||
| } | ||
| CV_IMPL void cvSetOpenGlDrawCallback(const char* name, CvOpenGlDrawCallback callback, void* userdata) | ||
75 changes: 73 additions & 2 deletionsmodules/highgui/test/test_gui.cpp
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -253,6 +253,77 @@ TEST(Highgui_GUI, currentUIFramework) | ||
| EXPECT_GT(framework.size(), 0); // builtin backends | ||
| #endif | ||
| } | ||
| #if (!defined(ENABLE_PLUGINS) \ | ||
| && !defined HAVE_GTK \ | ||
| && !defined HAVE_QT \ | ||
| && !defined HAVE_WIN32UI \ | ||
| && !defined HAVE_COCOA \ | ||
| && !defined HAVE_WAYLAND \ | ||
| ) || !defined(HAVE_OPENGL) | ||
| TEST(Highgui_GUI, DISABLED_gl) | ||
| #else | ||
| #include<epoxy/gl.h> | ||
| #include<GL/gl.h> | ||
| static GLuint create_shader(const char* source, GLenum type) { | ||
| GLuint shader = glCreateShader(type); | ||
| glShaderSource(shader, 1, &source, NULL); | ||
| glCompileShader(shader); | ||
| return shader; | ||
| } | ||
| struct DrawData | ||
| { | ||
| GLuint vao, vbo, program; | ||
| }; | ||
| void draw(void* userdata){ | ||
| DrawData* data = static_cast<DrawData*>(userdata); | ||
| glBindVertexArray(data->vao); | ||
| glDrawArrays(GL_TRIANGLES, 0, 3); | ||
| glBindVertexArray(0); | ||
| } | ||
| TEST(Highgui_GUI, gl) | ||
| #endif | ||
| { | ||
| const std::string window_name("gl_test_window"); | ||
| const Size image_size(800, 600); | ||
| EXPECT_NO_THROW(destroyAllWindows()); | ||
| ASSERT_NO_THROW(namedWindow(window_name, WINDOW_OPENGL)); | ||
| ASSERT_NO_THROW(resizeWindow(window_name, image_size)); | ||
| DrawData data; | ||
| const char *vertex_shader_source = | ||
| "#version 330 core\n" | ||
| "layout (location = 0) in vec3 position;\n" | ||
| "void main() {\n" | ||
| " gl_Position = vec4(position, 1.0);\n" | ||
| "}\n"; | ||
| const char *fragment_shader_source = | ||
| "#version 330 core\n" | ||
| "out vec4 color;\n" | ||
| "void main() {\n" | ||
| " color = vec4(1.0, 1.0, 1.0, 1.0); // white\n" | ||
| "}\n"; | ||
| GLuint vertex_shader = create_shader(vertex_shader_source, GL_VERTEX_SHADER); | ||
| GLuint fragment_shader = create_shader(fragment_shader_source, GL_FRAGMENT_SHADER); | ||
| data.program = glCreateProgram(); | ||
| glAttachShader(data.program, vertex_shader); | ||
| glAttachShader(data.program, fragment_shader); | ||
| glLinkProgram(data.program); | ||
| glUseProgram(data.program); | ||
| GLfloat vertices[] = { | ||
| 0.0f, 0.5f, 0.0f, | ||
| -0.5f, -0.5f, 0.0f, | ||
| 0.5f, -0.5f, 0.0f | ||
| }; | ||
| glGenVertexArrays(1, &data.vao); | ||
| glBindVertexArray(data.vao); | ||
| glGenBuffers(1, &data.vbo); | ||
| glBindBuffer(GL_ARRAY_BUFFER, data.vbo); | ||
| glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW); | ||
| glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(GLfloat), (GLvoid*)0); | ||
| glEnableVertexAttribArray(0); | ||
| glBindVertexArray(0); | ||
| ASSERT_NO_THROW(setOpenGlDrawCallback(window_name, draw, &data)); | ||
| EXPECT_NO_THROW(waitKey(10000)); | ||
| EXPECT_NO_THROW(setOpenGlDrawCallback(window_name, 0)); | ||
| EXPECT_NO_THROW(destroyAllWindows()); | ||
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| } | ||
| }} // namespace | ||
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