forked from AuroraMiddleware/gtk
gdk: Add a gl texture implementation
This will be used to pass a GL textures from the application (or rather, GtkGLArea) down to the GSK GL renderer.
This commit is contained in:
parent
e7cab2bc0c
commit
b366ea84a7
109
gdk/gdktexture.c
109
gdk/gdktexture.c
@ -39,6 +39,8 @@
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#include "gdkinternals.h"
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#include "gdkcairo.h"
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#include <epoxy/gl.h>
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/**
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* SECTION:gdktexture
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* @Short_description: Image data for display
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@ -432,6 +434,88 @@ gdk_pixbuf_texture_init (GdkPixbufTexture *self)
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{
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}
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/* GdkGLTexture */
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struct _GdkGLTexture {
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GdkTexture parent_instance;
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GdkGLContext *context;
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int id;
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GDestroyNotify destroy;
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gpointer data;
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};
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struct _GdkGLTextureClass {
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GdkTextureClass parent_class;
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};
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G_DEFINE_TYPE (GdkGLTexture, gdk_gl_texture, GDK_TYPE_TEXTURE)
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static void
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gdk_gl_texture_dispose (GObject *object)
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{
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GdkGLTexture *self = GDK_GL_TEXTURE (object);
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g_object_unref (self->context);
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if (self->destroy)
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self->destroy (self->data);
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G_OBJECT_CLASS (gdk_gl_texture_parent_class)->dispose (object);
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}
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static void
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gdk_gl_texture_download (GdkTexture *texture,
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guchar *data,
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gsize stride)
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{
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GdkGLTexture *self = GDK_GL_TEXTURE (texture);
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cairo_surface_t *surface;
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cairo_t *cr;
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GdkWindow *window;
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surface = cairo_image_surface_create_for_data (data,
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CAIRO_FORMAT_ARGB32,
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texture->width, texture->height,
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stride);
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cr = cairo_create (surface);
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window = gdk_gl_context_get_window (self->context);
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gdk_cairo_draw_from_gl (cr, window, self->id, GL_TEXTURE, 1, 0, 0, texture->width, texture->height);
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cairo_destroy (cr);
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cairo_surface_finish (surface);
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cairo_surface_destroy (surface);
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}
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static void
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gdk_gl_texture_class_init (GdkGLTextureClass *klass)
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{
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GdkTextureClass *texture_class = GDK_TEXTURE_CLASS (klass);
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GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
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texture_class->download = gdk_gl_texture_download;
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gobject_class->dispose = gdk_gl_texture_dispose;
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}
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static void
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gdk_gl_texture_init (GdkGLTexture *self)
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{
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}
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GdkGLContext *
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gdk_gl_texture_get_context (GdkGLTexture *self)
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{
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return self->context;
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}
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int
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gdk_gl_texture_get_id (GdkGLTexture *self)
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{
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return self->id;
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}
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/**
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* gdk_texture_new_for_pixbuf:
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* @pixbuf: a #GdkPixbuf
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@ -532,6 +616,31 @@ gdk_texture_new_from_file (GFile *file,
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return texture;
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}
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GdkTexture *
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gdk_texture_new_for_gl (GdkGLContext *context,
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int id,
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int width,
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int height,
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GDestroyNotify destroy,
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gpointer data)
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{
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GdkGLTexture *self;
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g_return_val_if_fail (GDK_IS_GL_CONTEXT (context), NULL);
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self = g_object_new (GDK_TYPE_GL_TEXTURE,
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"width", width,
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"height", height,
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NULL);
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self->context = g_object_ref (context);
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self->id = id;
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self->destroy = destroy;
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self->data = data;
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return GDK_TEXTURE (self);
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}
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/**
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* gdk_texture_get_width:
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* @texture: a #GdkTexture
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@ -26,6 +26,7 @@
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#include <gdk/gdkversionmacros.h>
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#include <gdk/gdktypes.h>
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#include <gdk-pixbuf/gdk-pixbuf.h>
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#include <gdk/gdkglcontext.h>
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G_BEGIN_DECLS
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@ -55,6 +56,14 @@ GDK_AVAILABLE_IN_3_94
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GdkTexture * gdk_texture_new_from_file (GFile *file,
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GError **error);
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GDK_AVAILABLE_IN_3_94
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GdkTexture * gdk_texture_new_for_gl (GdkGLContext *context,
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int id,
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int width,
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int height,
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GDestroyNotify destroy,
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gpointer data);
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GDK_AVAILABLE_IN_3_94
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int gdk_texture_get_width (GdkTexture *texture);
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GDK_AVAILABLE_IN_3_94
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@ -44,6 +44,13 @@ void gdk_texture_clear_render_data (GdkTexture
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gpointer gdk_texture_get_render_data (GdkTexture *self,
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gpointer key);
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#define GDK_TYPE_GL_TEXTURE (gdk_gl_texture_get_type ())
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G_DECLARE_FINAL_TYPE (GdkGLTexture, gdk_gl_texture, GDK, GL_TEXTURE, GdkTexture)
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GdkGLContext * gdk_gl_texture_get_context (GdkGLTexture *self);
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int gdk_gl_texture_get_id (GdkGLTexture *self);
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G_END_DECLS
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#endif /* __GDK_TEXTURE_PRIVATE_H__ */
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