From 38f61a24fcdf5a78cbabc9184f55ded3b496f1d4 Mon Sep 17 00:00:00 2001
From: PoroCYon <pcy@national.shitposting.agency>
Date: Sun, 26 May 2019 00:38:24 +0200
Subject: 'port' libui GL stuff to Linux
Only implemented the functions needed by melonDS, and only tested using
a very recent mesa+libglvnd+nouveau. Will most likely bork using
proprietary nvidia or old(er) drivers (see gl.c)
---
src/libui_sdl/libui/unix/CMakeLists.txt | 1 +
src/libui_sdl/libui/unix/area.c | 41 ++++++++++++++++++++++++++++
src/libui_sdl/libui/unix/gl.c | 47 +++++++++++++++++++++++++++++++++
src/libui_sdl/libui/unix/uipriv_unix.h | 6 ++++-
src/libui_sdl/libui/unix/window.c | 18 +++++++++++++
5 files changed, 112 insertions(+), 1 deletion(-)
create mode 100644 src/libui_sdl/libui/unix/gl.c
(limited to 'src/libui_sdl/libui')
diff --git a/src/libui_sdl/libui/unix/CMakeLists.txt b/src/libui_sdl/libui/unix/CMakeLists.txt
index 9300bcb..ec9ab75 100644
--- a/src/libui_sdl/libui/unix/CMakeLists.txt
+++ b/src/libui_sdl/libui/unix/CMakeLists.txt
@@ -43,6 +43,7 @@ list(APPEND _LIBUI_SOURCES
unix/text.c
unix/util.c
unix/window.c
+ unix/gl.c
)
set(_LIBUI_SOURCES ${_LIBUI_SOURCES} PARENT_SCOPE)
diff --git a/src/libui_sdl/libui/unix/area.c b/src/libui_sdl/libui/unix/area.c
index 2da9bab..e518ae5 100644
--- a/src/libui_sdl/libui/unix/area.c
+++ b/src/libui_sdl/libui/unix/area.c
@@ -38,7 +38,10 @@ struct uiArea {
GtkWidget *areaWidget;
GtkDrawingArea *drawingArea;
+ GtkGLArea *glArea;
areaWidget *area;
+
+ GdkGLContext *glContext;
int bgR, bgG, bgB;
@@ -730,6 +733,44 @@ uiArea *uiNewArea(uiAreaHandler *ah)
return a;
}
+uiArea *uiNewGLArea(uiAreaHandler *ah, const unsigned int* req_versions)
+{
+ uiArea *a;
+
+ uiUnixNewControl(uiArea, a);
+
+ a->ah = ah;
+ a->scrolling = FALSE;
+
+ GtkGLArea* gla = (GtkGLArea*)gtk_gl_area_new();
+ GdkGLContext* ctx = NULL;
+
+ for (int i = 0; req_versions[i] && !ctx; i++) {
+ int major = uiGLVerMajor(req_versions[i]);
+ int minor = uiGLVerMinor(req_versions[i]);
+ gtk_gl_area_set_required_version(gla, major, minor);
+ ctx = createGLContext(gla, major, minor);
+ }
+
+ a->glContext = ctx;
+ a->areaWidget = GTK_WIDGET(g_object_new(areaWidgetType, "libui-area",
+ a, NULL));
+ a->glArea = gla;
+ a->area = areaWidget(a->areaWidget);
+
+ a->widget = a->areaWidget;
+
+ uiAreaSetBackgroundColor(a, -1, -1, -1);
+
+ return a;
+}
+
+uiGLContext *uiAreaGetGLContext(uiArea* a)
+{
+ if (!a) return NULL;
+ return a->glContext;
+}
+
uiArea *uiNewScrollingArea(uiAreaHandler *ah, int width, int height)
{
uiArea *a;
diff --git a/src/libui_sdl/libui/unix/gl.c b/src/libui_sdl/libui/unix/gl.c
new file mode 100644
index 0000000..da41437
--- /dev/null
+++ b/src/libui_sdl/libui/unix/gl.c
@@ -0,0 +1,47 @@
+// 26 may 2019
+#include "uipriv_unix.h"
+
+/*
+ *(melonDS:17013): Gtk-CRITICAL **: 00:28:09.095: gtk_gl_area_set_required_version: assertion 'GTK_IS_GL_AREA (area)' failed
+
+(melonDS:17013): GLib-GObject-WARNING **: 00:28:09.096: invalid cast from 'GtkGLArea' to 'areaWidget'
+ */
+
+struct uiGLContext {
+ GtkGLArea *gla;
+ GdkGLContext *gctx;
+ int vermaj, vermin;
+};
+
+uiGLContext *createGLContext(GtkGLArea* gla, int maj, int min)
+{
+ uiGLContext *ret = uiAlloc(sizeof(uiGLContext), "uiGLContext");
+ ret->gla = gla;
+ ret->gctx = gtk_gl_area_get_context(gla);
+ ret->vermaj = maj; ret->vermin = min;
+ return ret;
+}
+
+void uiGLSwapBuffers(uiGLContext* ctx)
+{
+ if (!ctx) return;
+ gtk_gl_area_attach_buffers(ctx->gla);
+}
+
+void uiGLMakeContextCurrent(uiGLContext* ctx)
+{
+ if (!ctx) return;
+ gtk_gl_area_make_current(ctx->gla);
+}
+void *uiGLGetProcAddress(const char* proc)
+{
+ // this *will* break for older systems that don't have libglvnd!
+ // TODO: use a real solution
+ return dlsym(NULL /* RTLD_DEFAULT */, proc);
+}
+unsigned int uiGLGetVersion(uiGLContext* ctx)
+{
+ if (!ctx) return 0;
+ return uiGLVersion(ctx->vermaj, ctx->vermin);
+}
+
diff --git a/src/libui_sdl/libui/unix/uipriv_unix.h b/src/libui_sdl/libui/unix/uipriv_unix.h
index 33ff1e3..42d5d76 100644
--- a/src/libui_sdl/libui/unix/uipriv_unix.h
+++ b/src/libui_sdl/libui/unix/uipriv_unix.h
@@ -5,7 +5,7 @@
#define GDK_VERSION_MAX_ALLOWED GDK_VERSION_3_10
#include <gtk/gtk.h>
#include <math.h>
-#include <dlfcn.h> // see drawtext.c
+#include <dlfcn.h> // see drawtext.c, gl.c
#include <langinfo.h>
#include <string.h>
#include <stdlib.h>
@@ -63,3 +63,7 @@ extern GtkCellRenderer *newCellRendererButton(void);
extern void loadFutures(void);
extern PangoAttribute *FUTURE_pango_attr_foreground_alpha_new(guint16 alpha);
extern gboolean FUTURE_gtk_widget_path_iter_set_object_name(GtkWidgetPath *path, gint pos, const char *name);
+
+// gl.c
+extern uiGLContext *createGLContext(GtkGLArea* gla, int maj, int min);
+
diff --git a/src/libui_sdl/libui/unix/window.c b/src/libui_sdl/libui/unix/window.c
index 7da1134..6d5e2de 100644
--- a/src/libui_sdl/libui/unix/window.c
+++ b/src/libui_sdl/libui/unix/window.c
@@ -102,6 +102,23 @@ static void uiWindowDestroy(uiControl *c)
uiFreeControl(uiControl(w));
}
+void uiWindowSetPosition(uiWindow *w, int x, int y)
+{
+ if (!w) return;
+
+ gtk_window_move(w->window, x, y);
+}
+
+void uiWindowPosition(uiWindow *w, int *x, int *y)
+{
+ if (!w) return;
+
+ int xx, yy;
+ gtk_window_get_position(w->window, &xx, &yy);
+ if (x) *x = xx;
+ if (y) *y = yy;
+}
+
uiUnixControlDefaultHandle(uiWindow)
uiControl *uiWindowParent(uiControl *c)
@@ -442,3 +459,4 @@ uiWindow *uiNewWindow(const char *title, int width, int height, int maximized, i
return w;
}
+
--
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