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gtk/gsk/gl/gskgldriverprivate.h
Benjamin Otte 32625381fa gsk: Deprecate GskGLShader and the rendernode 
The new renderers don't support them due to the required complexity of
integrating them with Vulkan and the assumptions those nodes make about
the renderer (the GL renderer exports its internal APIs into the
GLShader).

There haven't been any complaints that I'm aware of since 4.14 was
released where the default renderer does not support the nodes, so usage
in public seems to be close to nonexistant.

The 2 uses I know of were workarounds about missing features in GTK that
have stopped since GTK now supports them:

1. GStreamer used in to do premultiplication when the old GL renderer
   did not do so in hardware but on the CPU.
2. Adwaita used it for masking before the mask node wa added in 4.10.
2024-07-04 21:28:06 +02:00

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/* gskgldriverprivate.h
*
* Copyright 2020 Christian Hergert <chergert@redhat.com>
*
* This file is free software; you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by the Free
* Software Foundation; either version 2.1 of the License, or (at your option)
* any later version.
*
* This file 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program. If not, see <http://www.gnu.org/licenses/>.
*
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#pragma once
#include <gdk/gdkgltextureprivate.h>
#include "gskgltypesprivate.h"
#include "gskgltextureprivate.h"
G_BEGIN_DECLS
enum {
UNIFORM_SHARED_ALPHA,
UNIFORM_SHARED_SOURCE,
UNIFORM_SHARED_CLIP_RECT,
UNIFORM_SHARED_VIEWPORT,
UNIFORM_SHARED_PROJECTION,
UNIFORM_SHARED_MODELVIEW,
UNIFORM_SHARED_LAST
};
enum {
UNIFORM_CUSTOM_SIZE = UNIFORM_SHARED_LAST,
UNIFORM_CUSTOM_TEXTURE1,
UNIFORM_CUSTOM_TEXTURE2,
UNIFORM_CUSTOM_TEXTURE3,
UNIFORM_CUSTOM_TEXTURE4,
UNIFORM_CUSTOM_ARG0,
UNIFORM_CUSTOM_ARG1,
UNIFORM_CUSTOM_ARG2,
UNIFORM_CUSTOM_ARG3,
UNIFORM_CUSTOM_ARG4,
UNIFORM_CUSTOM_ARG5,
UNIFORM_CUSTOM_ARG6,
UNIFORM_CUSTOM_ARG7,
UNIFORM_CUSTOM_LAST
};
typedef struct {
gconstpointer pointer;
float scale_x;
float scale_y;
int pointer_is_child;
graphene_rect_t parent_rect; /* Valid when pointer_is_child */
} GskTextureKey;
#define GSK_GL_NO_UNIFORMS CONCAT_EXPANDED(UNIFORM_INVALID_,__COUNTER__)
#define CONCAT_EXPANDED(a,b) CONCAT_EXPANDED2(a,b)
#define CONCAT_EXPANDED2(a,b) a##b
#define GSK_GL_ADD_UNIFORM(pos, KEY, name) UNIFORM_##KEY = UNIFORM_SHARED_LAST + pos,
#define GSK_GL_DEFINE_PROGRAM(name, resource, uniforms) enum { uniforms };
#define GSK_GL_DEFINE_PROGRAM_NO_CLIP(name, resource, uniforms) enum { uniforms };
# include "gskglprograms.defs"
#undef GSK_GL_DEFINE_PROGRAM_NO_CLIP
#undef GSK_GL_DEFINE_PROGRAM
#undef GSK_GL_ADD_UNIFORM
#undef GSK_GL_NO_UNIFORMS
#undef CONCAT_EXPANDED
#undef CONCAT_EXPANDED2
#define GSK_TYPE_GL_DRIVER (gsk_gl_driver_get_type())
G_DECLARE_FINAL_TYPE (GskGLDriver, gsk_gl_driver, GSK, GL_DRIVER, GObject)
struct _GskGLRenderTarget
{
guint framebuffer_id;
guint texture_id;
int format;
int width;
int height;
};
struct _GskGLDriver
{
GObject parent_instance;
GskGLCommandQueue *shared_command_queue;
GskGLCommandQueue *command_queue;
GskGLGlyphLibrary *glyphs_library;
GskGLIconLibrary *icons_library;
GskGLShadowLibrary *shadows_library;
GArray *texture_pool;
GHashTable *textures;
GHashTable *key_to_texture_id;
GHashTable *texture_id_to_key;
GHashTable *shader_cache;
GArray *autorelease_framebuffers;
GPtrArray *render_targets;
#define GSK_GL_NO_UNIFORMS
#define GSK_GL_ADD_UNIFORM(pos, KEY, name)
#define GSK_GL_DEFINE_PROGRAM(name, resource, uniforms) \
GskGLProgram *name ## _no_clip; \
GskGLProgram *name ## _rect_clip; \
GskGLProgram *name;
#define GSK_GL_DEFINE_PROGRAM_NO_CLIP(name, resource, uniforms) \
GskGLProgram *name;
# include "gskglprograms.defs"
#undef GSK_GL_NO_UNIFORMS
#undef GSK_GL_ADD_UNIFORM
#undef GSK_GL_DEFINE_PROGRAM
#undef GSK_GL_DEFINE_PROGRAM_NO_CLIP
gint64 current_frame_id;
/* Used to reduce number of comparisons */
guint stamps[UNIFORM_SHARED_LAST];
guint debug : 1;
guint in_frame : 1;
};
GskGLDriver * gsk_gl_driver_for_display (GdkDisplay *display,
gboolean debug_shaders,
GError **error);
GskGLCommandQueue * gsk_gl_driver_create_command_queue (GskGLDriver *self,
GdkGLContext *context);
GdkGLContext * gsk_gl_driver_get_context (GskGLDriver *self);
gboolean gsk_gl_driver_create_render_target (GskGLDriver *self,
int width,
int height,
int format,
GskGLRenderTarget **render_target);
guint gsk_gl_driver_release_render_target (GskGLDriver *self,
GskGLRenderTarget *render_target,
gboolean release_texture);
void gsk_gl_driver_begin_frame (GskGLDriver *self,
GskGLCommandQueue *command_queue);
void gsk_gl_driver_end_frame (GskGLDriver *self);
void gsk_gl_driver_after_frame (GskGLDriver *self);
GdkTexture * gsk_gl_driver_create_gdk_texture (GskGLDriver *self,
guint texture_id,
GdkMemoryFormat format);
void gsk_gl_driver_cache_texture (GskGLDriver *self,
const GskTextureKey *key,
guint texture_id);
guint gsk_gl_driver_load_texture (GskGLDriver *self,
GdkTexture *texture,
gboolean ensure_mipmap);
GskGLTexture * gsk_gl_driver_create_texture (GskGLDriver *self,
float width,
float height,
int format);
void gsk_gl_driver_release_texture (GskGLDriver *self,
GskGLTexture *texture);
void gsk_gl_driver_release_texture_by_id (GskGLDriver *self,
guint texture_id);
GskGLTexture * gsk_gl_driver_mark_texture_permanent (GskGLDriver *self,
guint texture_id);
void gsk_gl_driver_add_texture_slices (GskGLDriver *self,
GdkTexture *texture,
gboolean ensure_mipmap,
GskGLTextureSlice **out_slices,
guint *out_n_slices);
G_GNUC_BEGIN_IGNORE_DEPRECATIONS
GskGLProgram * gsk_gl_driver_lookup_shader (GskGLDriver *self,
GskGLShader *shader,
GError **error);
G_GNUC_END_IGNORE_DEPRECATIONS
#if 0
void gsk_gl_driver_save_texture_to_png (GskGLDriver *self,
int texture_id,
int width,
int height,
const char *filename);
void gsk_gl_driver_save_atlases_to_png (GskGLDriver *self,
const char *filename);
#endif
static inline GskGLTexture *
gsk_gl_driver_get_texture_by_id (GskGLDriver *self,
guint texture_id)
{
return g_hash_table_lookup (self->textures, GUINT_TO_POINTER (texture_id));
}
/**
* gsk_gl_driver_lookup_texture:
* @self: a `GskGLDriver`
* @key: the key for the texture
* @has_mipmap: (out): Return location for whether the texture has a mipmap
*
* Looks up a texture in the texture cache by @key.
*
* If the texture could not be found, then zero is returned.
*
* Returns: a positive integer if the texture was found; otherwise 0.
*/
static inline guint
gsk_gl_driver_lookup_texture (GskGLDriver *self,
const GskTextureKey *key,
gboolean *has_mipmap)
{
gpointer id;
if (g_hash_table_lookup_extended (self->key_to_texture_id, key, NULL, &id))
{
GskGLTexture *texture = g_hash_table_lookup (self->textures, id);
if (texture != NULL)
texture->last_used_in_frame = self->current_frame_id;
if (has_mipmap)
*has_mipmap = texture ? texture->has_mipmap : FALSE;
return GPOINTER_TO_UINT (id);
}
return 0;
}
static inline void
gsk_gl_driver_slice_texture (GskGLDriver *self,
GdkTexture *texture,
gboolean ensure_mipmap,
GskGLTextureSlice **out_slices,
guint *out_n_slices)
{
GskGLTexture *t;
t = gdk_texture_get_render_data (texture, self);
if (t && t->slices &&
(t->has_mipmap || !ensure_mipmap))
{
*out_slices = t->slices;
*out_n_slices = t->n_slices;
return;
}
gsk_gl_driver_add_texture_slices (self, texture, ensure_mipmap, out_slices, out_n_slices);
}
G_END_DECLS
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