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41cd0c6f13
After commit 447bc18c48 EGL on X11 broke.
But the handling of the GL context also was quite awkward because it was
unclear who was responsible for ensuring it got reset.
Change that by making gdk_gl_context_clear_current_if_surface() return
the context (with a reference because it might be the last reference) it
had unset, so that after changing EGL properties the code that caused
the clearing can re-make it current.
This moves the responsibility to the actual code that is dealing with
updating properties and frees the outer layers of code from that task.
And that means the X11 EGL code doesn't need to care and the code in the
Wayland backend that did care can be removed.
Related: !7662
Fixes: #6964 on X11
195 lines
9.3 KiB
C
195 lines
9.3 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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#pragma once
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#include "gdkglcontext.h"
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#include "gdkdrawcontextprivate.h"
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#include "gdkglversionprivate.h"
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#include "gdkdmabufprivate.h"
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G_BEGIN_DECLS
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typedef enum {
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GDK_GL_FEATURE_DEBUG = 1 << 0,
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GDK_GL_FEATURE_UNPACK_SUBIMAGE = 1 << 1,
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GDK_GL_FEATURE_VERTEX_HALF_FLOAT = 1 << 2,
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GDK_GL_FEATURE_SYNC = 1 << 3,
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GDK_GL_FEATURE_BASE_INSTANCE = 1 << 4,
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GDK_GL_FEATURE_BUFFER_STORAGE = 1 << 5,
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} GdkGLFeatures;
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typedef enum {
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GDK_GL_NONE = 0,
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GDK_GL_EGL,
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GDK_GL_GLX,
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GDK_GL_WGL,
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GDK_GL_CGL
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} GdkGLBackend;
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typedef enum {
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/* The format is supported for glTexImage2D() */
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GDK_GL_FORMAT_USABLE = 1 << 0,
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/* The format can be rendered to.
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* GL/GLES spec term: "color-renderable" */
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GDK_GL_FORMAT_RENDERABLE = 1 << 1,
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/* GL_LINEAR/GL_MIPMAP_LINEAR can be used for textures in this format.
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* GLES spec term: "texture-filterable" */
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GDK_GL_FORMAT_FILTERABLE = 1 << 2
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} GdkGLMemoryFlags;
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/* The maximum amount of buffers we track update regions for.
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* Note that this is equal to the max buffer age value we
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* can provide a damage region for */
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#define GDK_GL_MAX_TRACKED_BUFFERS 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[GDK_GL_MAX_TRACKED_BUFFERS];
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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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GdkGLBackend backend_type;
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GdkGLAPI (* 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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gboolean (* is_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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guint (* get_default_framebuffer) (GdkGLContext *self);
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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 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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gboolean gdk_gl_backend_can_be_used (GdkGLBackend backend_type,
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GError **error);
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void gdk_gl_backend_use (GdkGLBackend backend_type);
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GdkGLContext * gdk_gl_context_clear_current_if_surface (GdkSurface *surface) G_GNUC_WARN_UNUSED_RESULT;
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GdkGLContext * gdk_gl_context_new (GdkDisplay *display,
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GdkSurface *surface,
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gboolean surface_attached);
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gboolean gdk_gl_context_is_api_allowed (GdkGLContext *self,
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GdkGLAPI api,
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GError **error);
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void gdk_gl_context_set_version (GdkGLContext *context,
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const GdkGLVersion *version);
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void gdk_gl_context_set_is_legacy (GdkGLContext *context,
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gboolean is_legacy);
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gboolean gdk_gl_context_check_gl_version (GdkGLContext *context,
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const GdkGLVersion *gl_version,
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const GdkGLVersion *gles_version);
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static inline gboolean
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gdk_gl_context_check_version (GdkGLContext *context,
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const char *gl_version,
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const char *gles_version)
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{
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return gdk_gl_context_check_gl_version (context,
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gl_version ? &GDK_GL_VERSION_STRING (gl_version) : NULL,
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gles_version ? &GDK_GL_VERSION_STRING (gles_version) : NULL);
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}
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void gdk_gl_context_get_matching_version (GdkGLContext *context,
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GdkGLAPI api,
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gboolean legacy,
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GdkGLVersion *out_version);
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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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const char * gdk_gl_context_get_glsl_version_string (GdkGLContext *self);
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GdkGLMemoryFlags gdk_gl_context_get_format_flags (GdkGLContext *self,
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GdkMemoryFormat format) G_GNUC_PURE;
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gboolean gdk_gl_context_has_feature (GdkGLContext *self,
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GdkGLFeatures feature) G_GNUC_PURE;
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gboolean gdk_gl_context_use_es_bgra (GdkGLContext *context);
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gboolean gdk_gl_context_has_vertex_arrays (GdkGLContext *self) G_GNUC_PURE;
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double gdk_gl_context_get_scale (GdkGLContext *self);
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guint gdk_gl_context_import_dmabuf (GdkGLContext *self,
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int width,
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int height,
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const GdkDmabuf *dmabuf,
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gboolean *external);
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gboolean gdk_gl_context_export_dmabuf (GdkGLContext *self,
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unsigned int texture_id,
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GdkDmabuf *dmabuf);
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G_END_DECLS
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