mirror of
https://gitlab.gnome.org/GNOME/gtk.git
synced 2024-12-27 14:10:30 +00:00
96b800fa0c
If glBufferStorage() is available, we can replace our usage of glBufferSubData() with persistently mapped storage via glMappedBufferRange(). This has 1 disadvantage: 1. It's not supported everywhere, it requires GL 4.4 or GL_EXT_buffer_storage. But every GPU of the last 10 years should implement it. So we check for it and keep the old code. The old code can also be forced via GDK_GL_DISABLE=buffer-storage. But it has 2 advantages: 1. It is what Vulkan does, so it unifies the two renderers' buffer handling. 2. It is a significant performance boost in use cases with large vertex buffers. Those are pretty rare, but do happen with lots of text at a small font size. An example would be a small font in a maximized VTE terminal or the overview in gnome-text-editor. A custom benchmark tailored for this problem can be created with: tests/rendernode-create-tests 1000000 text.node This creates a node file called "text.node" that draws 1 million text nodes. (Creating that test takes a minute or so. A smaller number may be useful on less powerful hardware than my Intel Tigerlake laptop.) The difference can then be compared via: tools/gtk4-rendernode-tool benchmark --runs=20 text.node and GDK_GL_DISABLE=buffer-storage tools/gtk4-rendernode-tool benchmark --runs=20 text.node For my laptop, the difference is: before: 1.1s after: 0.8s Related: !7021
194 lines
9.1 KiB
C
194 lines
9.1 KiB
C
/* GDK - The GIMP Drawing Kit
|
|
*
|
|
* gdkglcontextprivate.h: GL context abstraction
|
|
*
|
|
* Copyright © 2014 Emmanuele Bassi
|
|
*
|
|
* This library is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU Library General Public
|
|
* License as published by the Free Software Foundation; either
|
|
* version 2 of the License, or (at your option) any later version.
|
|
*
|
|
* This library is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
* Library General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU Library General Public
|
|
* License along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "gdkglcontext.h"
|
|
#include "gdkdrawcontextprivate.h"
|
|
#include "gdkglversionprivate.h"
|
|
#include "gdkdmabufprivate.h"
|
|
|
|
G_BEGIN_DECLS
|
|
|
|
typedef enum {
|
|
GDK_GL_FEATURE_DEBUG = 1 << 0,
|
|
GDK_GL_FEATURE_UNPACK_SUBIMAGE = 1 << 1,
|
|
GDK_GL_FEATURE_VERTEX_HALF_FLOAT = 1 << 2,
|
|
GDK_GL_FEATURE_SYNC = 1 << 3,
|
|
GDK_GL_FEATURE_BASE_INSTANCE = 1 << 4,
|
|
GDK_GL_FEATURE_BUFFER_STORAGE = 1 << 5,
|
|
} GdkGLFeatures;
|
|
|
|
typedef enum {
|
|
GDK_GL_NONE = 0,
|
|
GDK_GL_EGL,
|
|
GDK_GL_GLX,
|
|
GDK_GL_WGL,
|
|
GDK_GL_CGL
|
|
} GdkGLBackend;
|
|
|
|
typedef enum {
|
|
/* The format is supported for glTexImage2D() */
|
|
GDK_GL_FORMAT_USABLE = 1 << 0,
|
|
/* The format can be rendered to.
|
|
* GL/GLES spec term: "color-renderable" */
|
|
GDK_GL_FORMAT_RENDERABLE = 1 << 1,
|
|
/* GL_LINEAR/GL_MIPMAP_LINEAR can be used for textures in this format.
|
|
* GLES spec term: "texture-filterable" */
|
|
GDK_GL_FORMAT_FILTERABLE = 1 << 2
|
|
} GdkGLMemoryFlags;
|
|
|
|
/* The maximum amount of buffers we track update regions for.
|
|
* Note that this is equal to the max buffer age value we
|
|
* can provide a damage region for */
|
|
#define GDK_GL_MAX_TRACKED_BUFFERS 4
|
|
|
|
#define GDK_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_CAST ((klass), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
|
|
#define GDK_IS_GL_CONTEXT_CLASS(klass) (G_TYPE_CHECK_CLASS_TYPE ((klass), GDK_TYPE_GL_CONTEXT))
|
|
#define GDK_GL_CONTEXT_GET_CLASS(obj) (G_TYPE_INSTANCE_GET_CLASS ((obj), GDK_TYPE_GL_CONTEXT, GdkGLContextClass))
|
|
|
|
typedef struct _GdkGLContextClass GdkGLContextClass;
|
|
|
|
struct _GdkGLContext
|
|
{
|
|
GdkDrawContext parent_instance;
|
|
|
|
/* We store the old drawn areas to support buffer-age optimizations */
|
|
cairo_region_t *old_updated_area[GDK_GL_MAX_TRACKED_BUFFERS];
|
|
};
|
|
|
|
struct _GdkGLContextClass
|
|
{
|
|
GdkDrawContextClass parent_class;
|
|
|
|
GdkGLBackend backend_type;
|
|
|
|
GdkGLAPI (* realize) (GdkGLContext *context,
|
|
GError **error);
|
|
|
|
gboolean (* make_current) (GdkGLContext *context,
|
|
gboolean surfaceless);
|
|
gboolean (* clear_current) (GdkGLContext *context);
|
|
gboolean (* is_current) (GdkGLContext *context);
|
|
cairo_region_t * (* get_damage) (GdkGLContext *context);
|
|
|
|
gboolean (* is_shared) (GdkGLContext *self,
|
|
GdkGLContext *other);
|
|
|
|
guint (* get_default_framebuffer) (GdkGLContext *self);
|
|
};
|
|
|
|
typedef struct {
|
|
guint program;
|
|
guint position_location;
|
|
guint uv_location;
|
|
guint map_location;
|
|
guint flip_location;
|
|
} GdkGLContextProgram;
|
|
|
|
typedef struct {
|
|
guint tmp_framebuffer;
|
|
guint tmp_vertex_buffer;
|
|
|
|
GdkGLContextProgram texture_2d_quad_program;
|
|
GdkGLContextProgram texture_rect_quad_program;
|
|
|
|
GdkGLContextProgram *current_program;
|
|
|
|
guint is_legacy : 1;
|
|
guint use_es : 1;
|
|
} GdkGLContextPaintData;
|
|
|
|
gboolean gdk_gl_backend_can_be_used (GdkGLBackend backend_type,
|
|
GError **error);
|
|
void gdk_gl_backend_use (GdkGLBackend backend_type);
|
|
|
|
void gdk_gl_context_clear_current_if_surface (GdkSurface *surface);
|
|
|
|
GdkGLContext * gdk_gl_context_new (GdkDisplay *display,
|
|
GdkSurface *surface);
|
|
|
|
gboolean gdk_gl_context_is_api_allowed (GdkGLContext *self,
|
|
GdkGLAPI api,
|
|
GError **error);
|
|
void gdk_gl_context_set_version (GdkGLContext *context,
|
|
const GdkGLVersion *version);
|
|
void gdk_gl_context_set_is_legacy (GdkGLContext *context,
|
|
gboolean is_legacy);
|
|
gboolean gdk_gl_context_check_gl_version (GdkGLContext *context,
|
|
const GdkGLVersion *gl_version,
|
|
const GdkGLVersion *gles_version);
|
|
|
|
static inline gboolean
|
|
gdk_gl_context_check_version (GdkGLContext *context,
|
|
const char *gl_version,
|
|
const char *gles_version)
|
|
{
|
|
return gdk_gl_context_check_gl_version (context,
|
|
gl_version ? &GDK_GL_VERSION_STRING (gl_version) : NULL,
|
|
gles_version ? &GDK_GL_VERSION_STRING (gles_version) : NULL);
|
|
}
|
|
|
|
void gdk_gl_context_get_matching_version (GdkGLContext *context,
|
|
GdkGLAPI api,
|
|
gboolean legacy,
|
|
GdkGLVersion *out_version);
|
|
|
|
void gdk_gl_context_push_debug_group (GdkGLContext *context,
|
|
const char *message);
|
|
void gdk_gl_context_push_debug_group_printf (GdkGLContext *context,
|
|
const char *format,
|
|
...) G_GNUC_PRINTF (2, 3);
|
|
void gdk_gl_context_pop_debug_group (GdkGLContext *context);
|
|
void gdk_gl_context_label_object (GdkGLContext *context,
|
|
guint identifier,
|
|
guint name,
|
|
const char *label);
|
|
void gdk_gl_context_label_object_printf (GdkGLContext *context,
|
|
guint identifier,
|
|
guint name,
|
|
const char *format,
|
|
...) G_GNUC_PRINTF (4, 5);
|
|
|
|
const char * gdk_gl_context_get_glsl_version_string (GdkGLContext *self);
|
|
|
|
GdkGLMemoryFlags gdk_gl_context_get_format_flags (GdkGLContext *self,
|
|
GdkMemoryFormat format) G_GNUC_PURE;
|
|
gboolean gdk_gl_context_has_feature (GdkGLContext *self,
|
|
GdkGLFeatures feature) G_GNUC_PURE;
|
|
|
|
gboolean gdk_gl_context_use_es_bgra (GdkGLContext *context);
|
|
|
|
gboolean gdk_gl_context_has_vertex_arrays (GdkGLContext *self) G_GNUC_PURE;
|
|
|
|
double gdk_gl_context_get_scale (GdkGLContext *self);
|
|
|
|
guint gdk_gl_context_import_dmabuf (GdkGLContext *self,
|
|
int width,
|
|
int height,
|
|
const GdkDmabuf *dmabuf,
|
|
gboolean *external);
|
|
|
|
gboolean gdk_gl_context_export_dmabuf (GdkGLContext *self,
|
|
unsigned int texture_id,
|
|
GdkDmabuf *dmabuf);
|
|
|
|
G_END_DECLS
|