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e06e0e8555
Now that we have the display's context to hook into, we can use it to construct other GL contexts and don't need a GdkSurface vfunc anymore. This has the added benefit that backends can have different GdkGLContext classes on the display and get new GLContexts generated from them, so we get multiple GL backend support per GDK backend for free. I originally wanted to make this a vfunc on GdkGLContextClass, but it turns out all the abckends would just call g_object_new() anyway.
139 lines
6.3 KiB
C
139 lines
6.3 KiB
C
/* GDK - The GIMP Drawing Kit
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*
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* gdkglcontextprivate.h: GL context abstraction
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*
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* Copyright © 2014 Emmanuele Bassi
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef __GDK_GL_CONTEXT_PRIVATE_H__
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#define __GDK_GL_CONTEXT_PRIVATE_H__
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#include "gdkglcontext.h"
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#include "gdkdrawcontextprivate.h"
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#include "gdkmemorytexture.h"
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G_BEGIN_DECLS
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/* Version requirements for EGL contexts.
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*
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* If you add support for EGL to your backend, please require this.
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*/
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#define GDK_EGL_MIN_VERSION_MAJOR (1)
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#define GDK_EGL_MIN_VERSION_MINOR (4)
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#define GDK_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
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#define GDK_IS_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_GL_CONTEXT))
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#define GDK_GL_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
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typedef struct _GdkGLContextClass GdkGLContextClass;
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struct _GdkGLContext
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{
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GdkDrawContext parent_instance;
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/* We store the old drawn areas to support buffer-age optimizations */
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cairo_region_t *old_updated_area[2];
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};
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struct _GdkGLContextClass
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{
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GdkDrawContextClass parent_class;
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gboolean (* realize) (GdkGLContext *context,
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GError **error);
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gboolean (* make_current) (GdkGLContext *context,
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gboolean surfaceless);
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gboolean (* clear_current) (GdkGLContext *context);
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cairo_region_t * (* get_damage) (GdkGLContext *context);
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gboolean (* is_shared) (GdkGLContext *self,
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GdkGLContext *other);
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};
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typedef struct {
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guint program;
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guint position_location;
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guint uv_location;
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guint map_location;
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guint flip_location;
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} GdkGLContextProgram;
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typedef struct {
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guint vertex_array_object;
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guint tmp_framebuffer;
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guint tmp_vertex_buffer;
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GdkGLContextProgram texture_2d_quad_program;
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GdkGLContextProgram texture_rect_quad_program;
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GdkGLContextProgram *current_program;
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guint is_legacy : 1;
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guint use_es : 1;
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} GdkGLContextPaintData;
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GdkGLContext * gdk_gl_context_new_for_surface (GdkSurface *surface);
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void gdk_gl_context_set_is_legacy (GdkGLContext *context,
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gboolean is_legacy);
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void gdk_gl_context_upload_texture (GdkGLContext *context,
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const guchar *data,
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int width,
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int height,
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int stride,
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GdkMemoryFormat data_format,
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guint texture_target);
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GdkGLContextPaintData * gdk_gl_context_get_paint_data (GdkGLContext *context);
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gboolean gdk_gl_context_use_texture_rectangle (GdkGLContext *context);
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gboolean gdk_gl_context_has_unpack_subimage (GdkGLContext *context);
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void gdk_gl_context_push_debug_group (GdkGLContext *context,
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const char *message);
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void gdk_gl_context_push_debug_group_printf (GdkGLContext *context,
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const char *format,
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...) G_GNUC_PRINTF (2, 3);
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void gdk_gl_context_pop_debug_group (GdkGLContext *context);
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void gdk_gl_context_label_object (GdkGLContext *context,
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guint identifier,
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guint name,
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const char *label);
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void gdk_gl_context_label_object_printf (GdkGLContext *context,
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guint identifier,
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guint name,
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const char *format,
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...) G_GNUC_PRINTF (4, 5);
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gboolean gdk_gl_context_has_debug (GdkGLContext *self) G_GNUC_PURE;
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gboolean gdk_gl_context_use_es_bgra (GdkGLContext *context);
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typedef struct {
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float x1, y1, x2, y2;
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float u1, v1, u2, v2;
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} GdkTexturedQuad;
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void gdk_gl_texture_quads (GdkGLContext *context,
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guint texture_target,
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int n_quads,
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GdkTexturedQuad *quads,
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gboolean flip_colors);
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G_END_DECLS
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#endif /* __GDK_GL_CONTEXT_PRIVATE_H__ */
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