Start preview feature. Add dummy triangle to test OpenGL.
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f42d61192a
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4aa63db8dd
@ -44,6 +44,10 @@
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#include <gds-render/geometric/cell-geometrics.h>
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#include <gds-render/version.h>
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#ifdef GDS_RENDER_OPGENGL_PREVIEW
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#include <preview-rendering/preview-rendering-gui.h>
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#endif
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/** @brief Columns of selection tree view */
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enum cell_store_columns {
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CELL_SEL_LIBRARY = 0,
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@ -68,6 +72,9 @@ struct _GdsRenderGui {
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/* Custom fields */
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GtkWindow *main_window;
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#ifdef GDS_RENDER_OPGENGL_PREVIEW
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OpenGlPreviewGui *preview_gui;
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#endif
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GtkWidget *convert_button;
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GtkWidget *open_button;
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GtkWidget *load_layer_button;
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@ -189,8 +196,8 @@ static gboolean cell_store_filter_visible_func(GtkTreeModel *model, GtkTreeIter
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gtk_tree_model_get(model, iter, CELL_SEL_CELL, &cell, CELL_SEL_LIBRARY, &lib, -1);
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/* Show always, if this is a pure lib entry */
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if (lib && !cell) {
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/* Show always, if this is a pure lib entry */
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if (lib && !cell) {
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result = TRUE;
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goto exit_filter;
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}
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@ -665,6 +672,9 @@ static void gds_render_gui_dispose(GObject *gobject)
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g_clear_object(&self->save_layer_button);
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g_clear_object(&self->open_button);
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g_clear_object(&self->select_all_button);
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#ifdef GDS_RENDER_OPGENGL_PREVIEW
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g_clear_object(&self->preview_gui);
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#endif
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if (self->main_window) {
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g_signal_handlers_destroy(self->main_window);
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@ -768,7 +778,15 @@ static void gds_render_gui_init(GdsRenderGui *self)
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GtkWidget *activity_bar_box;
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GtkWidget *auto_color_button;
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GtkWidget *auto_naming_button;
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#ifdef GDS_RENDER_OPGENGL_PREVIEW
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OpenGlPreviewGui *preview_gui;
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preview_gui = opengl_preview_gui_new();
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/* No need to reference the preview gui. It is already referenced upon creation */
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self->preview_gui = preview_gui;
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opengl_preview_gui_show(preview_gui);
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#endif
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main_builder = gtk_builder_new_from_resource("/gui/main.glade");
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self->cell_tree_view = GTK_TREE_VIEW(gtk_builder_get_object(main_builder, "cell-tree"));
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5
main.c
5
main.c
@ -96,6 +96,11 @@ static void app_about(GSimpleAction *action, GVariant *parameter, gpointer user_
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comment_text = g_string_new(_("gds-render is a free tool for rendering GDS2 layout files into vector graphics."));
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g_string_append_printf(comment_text, _("\n\nFull git commit: %s"), _app_git_commit);
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#ifdef GDS_RENDER_OPGENGL_PREVIEW
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g_string_append_printf(comment_text, _("\nOpenGL Previev: Availabe"));
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#else
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g_string_append_printf(comment_text, _("\nOpenGL Previev: Unavailabe"));
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#endif
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builder = gtk_builder_new_from_resource("/gui/about.glade");
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dialog = GTK_DIALOG(gtk_builder_get_object(builder, "about-dialog"));
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gtk_window_set_transient_for(GTK_WINDOW(dialog), NULL);
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@ -1,7 +1,15 @@
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project(opengl-preview)
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cmake_minimum_required(VERSION 3.0)
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find_package(PkgConfig REQUIRED)
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pkg_check_modules(EPOXY REQUIRED epoxy)
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pkg_search_module(GLIB REQUIRED glib-2.0)
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pkg_check_modules(GTK3 REQUIRED gtk+-3.0)
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aux_source_directory("src" SRCS)
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add_library(${PROJECT_NAME} STATIC ${SRCS})
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target_include_directories(${PROJECT_NAME} PUBLIC "include")
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target_include_directories(${PROJECT_NAME} PRIVATE ${EPOXY_INCLUDE_DIRS} ${GLIB_INCLUDE_DIRS} ${GTK3_INCLUDE_DIRS})
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target_link_directories(${PROJECT_NAME} PUBLIC ${EPOXY_LINK_DIRS} ${GLIB_LINK_DIRS} ${GTK3_LINK_DIRS})
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target_link_libraries(${PROJECT_NAME} ${GLIB_LDFLAGS} ${EPOXY_LDFLAGS} ${GTK3_LDFLAGS})
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@ -0,0 +1,14 @@
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#ifndef _PREVIEW_RENDERING_GUI_H_
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#define _PREVIEW_RENDERING_GUI_H_
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#include <gtk/gtk.h>
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G_DECLARE_FINAL_TYPE(OpenGlPreviewGui, opengl_preview_gui, GDS_RENDER, OPENGL_PREVIEW_GUI, GObject)
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#define TYPE_GDS_RENDER_OPENGL_PREVIEW_GUI (opengl_preview_gui_get_type())
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OpenGlPreviewGui *opengl_preview_gui_new(void);
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void opengl_preview_gui_show(OpenGlPreviewGui *self);
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#endif /* _PREVIEW_RENDERING_GUI_H_ */
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167
preview-rendering/src/preview-rendering-gui.c
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167
preview-rendering/src/preview-rendering-gui.c
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@ -0,0 +1,167 @@
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#include <preview-rendering/preview-rendering-gui.h>
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#include <epoxy/gl.h>
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struct _OpenGlPreviewGui {
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GObject super;
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GtkWindow *main_window;
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GtkGLArea *gl_area;
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unsigned int polygon_shader_prog;
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unsigned int vao;
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unsigned int vbo;
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float color[4];
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};
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G_DEFINE_TYPE(OpenGlPreviewGui, opengl_preview_gui, G_TYPE_OBJECT)
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static void opengl_preview_gui_dispose(GObject *gobj)
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{
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OpenGlPreviewGui *self;
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self = GDS_RENDER_OPENGL_PREVIEW_GUI(gobj);
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g_clear_object(&self->gl_area);
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if (self->main_window) {
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gtk_widget_destroy(GTK_WIDGET(self->main_window));
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self->main_window = NULL;
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}
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G_OBJECT_CLASS(opengl_preview_gui_parent_class)->dispose(gobj);
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}
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static void opengl_preview_gui_class_init(OpenGlPreviewGuiClass *klass)
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{
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GObjectClass *oclass = G_OBJECT_CLASS(klass);
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oclass->dispose = opengl_preview_gui_dispose;
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}
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static gboolean gl_area_render(GtkGLArea *area, GdkGLContext *context, gpointer user)
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{
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OpenGlPreviewGui *gui;
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int loc;
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gui = GDS_RENDER_OPENGL_PREVIEW_GUI(user);
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gtk_gl_area_make_current(area);
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glClearColor (0, 0, 0, 1.0);
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glClear (GL_COLOR_BUFFER_BIT);
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glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
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glUseProgram(gui->polygon_shader_prog);
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glBindVertexArray(gui->vao);
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loc = glGetUniformLocation(gui->polygon_shader_prog, "const_color");
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glUniform4fv(loc, 1, gui->color);
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glDrawArrays(GL_TRIANGLES, 0, 3);
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glFlush();
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return TRUE;
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}
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static int compile_shader_from_resource(GLenum shader_type, const char *res_name, unsigned int *shader)
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{
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int success;
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GBytes *res_bytes;
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const char *data;
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gsize size;
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int size_int;
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int sh;
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res_bytes = g_resources_lookup_data(res_name, G_RESOURCE_LOOKUP_FLAGS_NONE, NULL);
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data = g_bytes_get_data(res_bytes, &size);
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sh = glCreateShader(shader_type);
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size_int = (int)size;
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glShaderSource(sh, 1, &data, &size_int);
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glCompileShader(sh);
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glGetShaderiv(sh, GL_COMPILE_STATUS, &success);
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g_bytes_unref(res_bytes);
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if (shader)
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*shader = sh;
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return success;
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}
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static gboolean gl_area_realize(GtkGLArea *area, gpointer user)
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{
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unsigned int vbo;
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unsigned int vs;
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unsigned int fs;
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unsigned int prog;
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unsigned int vao;
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OpenGlPreviewGui *gui;
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int success;
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gui = GDS_RENDER_OPENGL_PREVIEW_GUI(user);
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gui->color[0] = 0.6f;
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gui->color[1] = 0.5f;
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gui->color[2] = 0.12f;
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gui->color[3] = 1.0f;
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gtk_gl_area_make_current(area);
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if (!compile_shader_from_resource(GL_VERTEX_SHADER, "/shaders/polygon.vs", &vs)) {
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g_warning("Error compiling vertex shader");
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}
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if (!compile_shader_from_resource(GL_FRAGMENT_SHADER, "/shaders/polygon.fs", &fs)) {
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g_warning("Error compiling fragment shader");
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}
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prog = glCreateProgram();
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glAttachShader(prog, vs);
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glAttachShader(prog, fs);
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glLinkProgram(prog);
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glGetProgramiv(prog, GL_LINK_STATUS, &success);
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if (!success) {
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g_warning("Error linking shader");
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}
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glUseProgram(prog);
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glDeleteShader(vs);
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glDeleteShader(fs);
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float vertices[] = {
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-0.5f, -0.5f,
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0.5f, -0.5f,
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0.0f, 0.5f,
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};
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glGenVertexArrays(1, &vao);
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glBindVertexArray(vao);
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glGenBuffers(1, &vbo);
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glBindBuffer(GL_ARRAY_BUFFER, vbo);
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glBufferData(GL_ARRAY_BUFFER, sizeof(vertices), vertices, GL_STATIC_DRAW);
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glVertexAttribPointer(0, 2, GL_FLOAT, GL_FALSE, 2*sizeof(float), (void *)0);
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glEnableVertexAttribArray(0);
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gui->polygon_shader_prog = prog;
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gui->vao = vao;
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gui->vbo = vbo;
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return TRUE;
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}
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static void opengl_preview_gui_init(OpenGlPreviewGui *self)
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{
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GtkBuilder *builder;
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builder = gtk_builder_new_from_resource("/gui/preview-window.glade");
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self->main_window = GTK_WINDOW(gtk_builder_get_object(builder, "main-window"));
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self->gl_area = GTK_GL_AREA(gtk_builder_get_object(builder, "gl-area"));
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g_signal_connect(self->gl_area, "render", G_CALLBACK(gl_area_render), self);
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g_signal_connect(self->gl_area, "realize", G_CALLBACK(gl_area_realize), self);
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g_object_ref(self->gl_area);
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}
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OpenGlPreviewGui *opengl_preview_gui_new(void)
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{
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return GDS_RENDER_OPENGL_PREVIEW_GUI(g_object_new(TYPE_GDS_RENDER_OPENGL_PREVIEW_GUI, NULL));
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}
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void opengl_preview_gui_show(OpenGlPreviewGui *self)
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{
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gtk_widget_show(GTK_WIDGET(self->main_window));
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}
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@ -1,4 +1,8 @@
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#include <epoxy/gl.h>
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int foobar(void)
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{
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GLuint foo;
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glGenBuffers(1, &foo);
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return 42;
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}
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43
resources/preview-window.glade
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43
resources/preview-window.glade
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<?xml version="1.0" encoding="UTF-8"?>
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<!-- Generated with glade 3.38.2 -->
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<interface>
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<requires lib="gtk+" version="3.24"/>
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<object class="GtkWindow" id="main-window">
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<property name="can-focus">False</property>
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<property name="default-width">1024</property>
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<property name="default-height">500</property>
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<child>
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<object class="GtkBox">
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<property name="visible">True</property>
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<property name="can-focus">False</property>
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<property name="baseline-position">bottom</property>
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<child>
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<object class="GtkButton">
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<property name="label" translatable="yes">button</property>
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<property name="visible">True</property>
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<property name="can-focus">True</property>
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<property name="receives-default">True</property>
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</object>
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<packing>
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<property name="expand">False</property>
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<property name="fill">True</property>
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<property name="position">0</property>
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</packing>
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</child>
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<child>
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<object class="GtkGLArea" id="gl-area">
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<property name="visible">True</property>
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<property name="app-paintable">True</property>
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<property name="can-focus">False</property>
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<property name="has-alpha">True</property>
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</object>
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<packing>
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<property name="expand">True</property>
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<property name="fill">True</property>
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<property name="position">1</property>
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</packing>
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</child>
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</object>
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</child>
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</object>
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</interface>
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@ -5,6 +5,7 @@
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<file compressed="true">about.glade</file>
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<file>layer-widget.glade</file>
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<file>dialog.glade</file>
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<file compressed="true">preview-window.glade</file>
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</gresource>
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<gresource prefix="/data">
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<file compressed="true">color-palette.txt</file>
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@ -12,6 +13,10 @@
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<gresource prefix="/images">
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<file compressed="true" alias="logo.svg">../icon/gds-render.svg</file>
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</gresource>
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<gresource prefix="/shaders">
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<file compressed="true" alias="polygon.fs">./shaders/polygon.fs.glsl</file>
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<file compressed="true" alias="polygon.vs">./shaders/polygon.vs.glsl</file>
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</gresource>
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</gresources>
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9
resources/shaders/polygon.fs.glsl
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9
resources/shaders/polygon.fs.glsl
Normal file
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#version 330 core
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out vec4 FragColor;
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in vec4 vertex_color;
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void main()
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{
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FragColor = vertex_color;
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}
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12
resources/shaders/polygon.vs.glsl
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12
resources/shaders/polygon.vs.glsl
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#version 330 core
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//uniform mat4 mvp;
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uniform vec4 const_color;
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layout (location = 0) in vec2 input_vertex;
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out vec4 vertex_color;
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void main()
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{
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gl_Position = vec4(input_vertex.x, input_vertex.y, 0.0, 1.0);
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vertex_color = const_color;
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}
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