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gtk/gsk/ngl/gskngldriverprivate.h

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gsk: add OpenGL based GskNglRenderer The primary goal here was to cleanup the current GL renderer to make maintenance easier going forward. Furthermore, it tracks state to allow us to implement more advanced renderer features going forward. Reordering This renderer will reorder batches by render target to reduce the number of times render targets are changed. In the future, we could also reorder by program within the render target if we can determine that vertices do not overlap. Uniform Snapshots To allow for reordering of batches all uniforms need to be tracked for the programs. This allows us to create the full uniform state when the batch has been moved into a new position. Some care was taken as it can be performance sensitive. Attachment Snapshots Similar to uniform snapshots, we need to know all of the texture attachments so that we can rebind them when necessary. Render Jobs To help isolate the process of creating GL commands from the renderer abstraction a render job abstraction was added. This could be extended in the future if we decided to do tiling. Command Queue Render jobs create batches using the command queue. The command queue will snapshot uniform and attachment state so that it can reorder batches right before executing them. Currently, the only reordering done is to ensure that we only visit each render target once. We could extend this by tracking vertices, attachments, and others. This code currently uses an inline array helper to reduce overhead from GArray which was showing up on profiles. It could be changed to use GdkArray without too much work, but had roughly double the instructions. Cycle counts have not yet been determined. GLSL Programs This was simplified to use XMACROS so that we can just extend one file (gskglprograms.defs) instead of multiple places. The programs are added as fields in the driver for easy access. Driver The driver manages textures, render targets, access to atlases, programs, and more. There is one driver per display, by using the shared GL context. Some work could be done here to batch uploads so that we make fewer calls to upload when sending icon theme data to the GPU. We'd need to keep a copy of the atlas data for such purposes.
2020-12-19 01:36:59 +00:00
/* gskngldriverprivate.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
*/
#ifndef __GSK_NGL_DRIVER_PRIVATE_H__
#define __GSK_NGL_DRIVER_PRIVATE_H__
#include <gdk/gdkgltextureprivate.h>
#include "gskngltypesprivate.h"
#include "gskngltexturepoolprivate.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,
ngl: move uniform key mapping into uniform state Previously, we translated the uniform key (an enum) into a location within the shader program in GskNglProgram. A number of performance improvements were focused around having low nubers for the uniform locations. Generally this is the case, but some drivers such as old Intel drivers on Windows may use rather large numbers for those. To combat this, we can push the translation of uniform keys into locations at the GskNglUniformState level so that we work with unranslated keys through the process until applying them. Fixes #3780
2021-03-23 19:10:12 +00:00
UNIFORM_CUSTOM_ARG0,
UNIFORM_CUSTOM_ARG1,
UNIFORM_CUSTOM_ARG2,
UNIFORM_CUSTOM_ARG3,
UNIFORM_CUSTOM_ARG4,
UNIFORM_CUSTOM_ARG5,
UNIFORM_CUSTOM_ARG6,
UNIFORM_CUSTOM_ARG7,
gsk: add OpenGL based GskNglRenderer The primary goal here was to cleanup the current GL renderer to make maintenance easier going forward. Furthermore, it tracks state to allow us to implement more advanced renderer features going forward. Reordering This renderer will reorder batches by render target to reduce the number of times render targets are changed. In the future, we could also reorder by program within the render target if we can determine that vertices do not overlap. Uniform Snapshots To allow for reordering of batches all uniforms need to be tracked for the programs. This allows us to create the full uniform state when the batch has been moved into a new position. Some care was taken as it can be performance sensitive. Attachment Snapshots Similar to uniform snapshots, we need to know all of the texture attachments so that we can rebind them when necessary. Render Jobs To help isolate the process of creating GL commands from the renderer abstraction a render job abstraction was added. This could be extended in the future if we decided to do tiling. Command Queue Render jobs create batches using the command queue. The command queue will snapshot uniform and attachment state so that it can reorder batches right before executing them. Currently, the only reordering done is to ensure that we only visit each render target once. We could extend this by tracking vertices, attachments, and others. This code currently uses an inline array helper to reduce overhead from GArray which was showing up on profiles. It could be changed to use GdkArray without too much work, but had roughly double the instructions. Cycle counts have not yet been determined. GLSL Programs This was simplified to use XMACROS so that we can just extend one file (gskglprograms.defs) instead of multiple places. The programs are added as fields in the driver for easy access. Driver The driver manages textures, render targets, access to atlases, programs, and more. There is one driver per display, by using the shared GL context. Some work could be done here to batch uploads so that we make fewer calls to upload when sending icon theme data to the GPU. We'd need to keep a copy of the atlas data for such purposes.
2020-12-19 01:36:59 +00:00
UNIFORM_CUSTOM_LAST
};
typedef struct {
gconstpointer pointer;
float scale_x;
float scale_y;
int filter;
int pointer_is_child;
graphene_rect_t parent_rect; /* Valid when pointer_is_child */
} GskTextureKey;
ngl: Set color as vertex attribute Instead of using uniforms for color used in multiple programs, pass it as vertex attributes. This will let us batch more draw calls, since we don't have to change uniforms so often. In particular, for syntax-highlighted text.
2021-03-12 00:46:15 +00:00
#define GSK_NGL_NO_UNIFORMS CONCAT_EXPANDED(UNIFORM_INVALID_,__COUNTER__)
#define CONCAT_EXPANDED(a,b) CONCAT_EXPANDED2(a,b)
#define CONCAT_EXPANDED2(a,b) a##b
gsk: add OpenGL based GskNglRenderer The primary goal here was to cleanup the current GL renderer to make maintenance easier going forward. Furthermore, it tracks state to allow us to implement more advanced renderer features going forward. Reordering This renderer will reorder batches by render target to reduce the number of times render targets are changed. In the future, we could also reorder by program within the render target if we can determine that vertices do not overlap. Uniform Snapshots To allow for reordering of batches all uniforms need to be tracked for the programs. This allows us to create the full uniform state when the batch has been moved into a new position. Some care was taken as it can be performance sensitive. Attachment Snapshots Similar to uniform snapshots, we need to know all of the texture attachments so that we can rebind them when necessary. Render Jobs To help isolate the process of creating GL commands from the renderer abstraction a render job abstraction was added. This could be extended in the future if we decided to do tiling. Command Queue Render jobs create batches using the command queue. The command queue will snapshot uniform and attachment state so that it can reorder batches right before executing them. Currently, the only reordering done is to ensure that we only visit each render target once. We could extend this by tracking vertices, attachments, and others. This code currently uses an inline array helper to reduce overhead from GArray which was showing up on profiles. It could be changed to use GdkArray without too much work, but had roughly double the instructions. Cycle counts have not yet been determined. GLSL Programs This was simplified to use XMACROS so that we can just extend one file (gskglprograms.defs) instead of multiple places. The programs are added as fields in the driver for easy access. Driver The driver manages textures, render targets, access to atlases, programs, and more. There is one driver per display, by using the shared GL context. Some work could be done here to batch uploads so that we make fewer calls to upload when sending icon theme data to the GPU. We'd need to keep a copy of the atlas data for such purposes.
2020-12-19 01:36:59 +00:00
#define GSK_NGL_ADD_UNIFORM(pos, KEY, name) UNIFORM_##KEY = UNIFORM_SHARED_LAST + pos,
#define GSK_NGL_DEFINE_PROGRAM(name, resource, uniforms) enum { uniforms };
# include "gsknglprograms.defs"
#undef GSK_NGL_DEFINE_PROGRAM
#undef GSK_NGL_ADD_UNIFORM
ngl: Set color as vertex attribute Instead of using uniforms for color used in multiple programs, pass it as vertex attributes. This will let us batch more draw calls, since we don't have to change uniforms so often. In particular, for syntax-highlighted text.
2021-03-12 00:46:15 +00:00
#undef GSK_NGL_NO_UNIFORMS
#undef CONCAT_EXPANDED
#undef CONCAT_EXPANDED2
gsk: add OpenGL based GskNglRenderer The primary goal here was to cleanup the current GL renderer to make maintenance easier going forward. Furthermore, it tracks state to allow us to implement more advanced renderer features going forward. Reordering This renderer will reorder batches by render target to reduce the number of times render targets are changed. In the future, we could also reorder by program within the render target if we can determine that vertices do not overlap. Uniform Snapshots To allow for reordering of batches all uniforms need to be tracked for the programs. This allows us to create the full uniform state when the batch has been moved into a new position. Some care was taken as it can be performance sensitive. Attachment Snapshots Similar to uniform snapshots, we need to know all of the texture attachments so that we can rebind them when necessary. Render Jobs To help isolate the process of creating GL commands from the renderer abstraction a render job abstraction was added. This could be extended in the future if we decided to do tiling. Command Queue Render jobs create batches using the command queue. The command queue will snapshot uniform and attachment state so that it can reorder batches right before executing them. Currently, the only reordering done is to ensure that we only visit each render target once. We could extend this by tracking vertices, attachments, and others. This code currently uses an inline array helper to reduce overhead from GArray which was showing up on profiles. It could be changed to use GdkArray without too much work, but had roughly double the instructions. Cycle counts have not yet been determined. GLSL Programs This was simplified to use XMACROS so that we can just extend one file (gskglprograms.defs) instead of multiple places. The programs are added as fields in the driver for easy access. Driver The driver manages textures, render targets, access to atlases, programs, and more. There is one driver per display, by using the shared GL context. Some work could be done here to batch uploads so that we make fewer calls to upload when sending icon theme data to the GPU. We'd need to keep a copy of the atlas data for such purposes.
2020-12-19 01:36:59 +00:00
#define GSK_TYPE_NGL_DRIVER (gsk_ngl_driver_get_type())
G_DECLARE_FINAL_TYPE (GskNglDriver, gsk_ngl_driver, GSK, NGL_DRIVER, GObject)
struct _GskNglRenderTarget
{
guint framebuffer_id;
guint texture_id;
int min_filter;
int mag_filter;
int width;
int height;
};
struct _GskNglDriver
{
GObject parent_instance;
GskNglCommandQueue *shared_command_queue;
GskNglCommandQueue *command_queue;
GskNglTexturePool texture_pool;
GskNglGlyphLibrary *glyphs;
GskNglIconLibrary *icons;
GskNglShadowLibrary *shadows;
GHashTable *textures;
GHashTable *key_to_texture_id;
GHashTable *texture_id_to_key;
GPtrArray *atlases;
GHashTable *shader_cache;
GArray *autorelease_framebuffers;
GPtrArray *render_targets;
#define GSK_NGL_NO_UNIFORMS
#define GSK_NGL_ADD_UNIFORM(pos, KEY, name)
ngl: Add infrastructure for clip-variants of shaders Make ngl compile each shader three times. Once with #define NO_CLIP 1 once with #define RECT_CLIP 1 and once as before.
2021-03-07 22:50:19 +00:00
#define GSK_NGL_DEFINE_PROGRAM(name, resource, uniforms) \
GskNglProgram *name ## _no_clip; \
GskNglProgram *name ## _rect_clip; \
GskNglProgram *name;
gsk: add OpenGL based GskNglRenderer The primary goal here was to cleanup the current GL renderer to make maintenance easier going forward. Furthermore, it tracks state to allow us to implement more advanced renderer features going forward. Reordering This renderer will reorder batches by render target to reduce the number of times render targets are changed. In the future, we could also reorder by program within the render target if we can determine that vertices do not overlap. Uniform Snapshots To allow for reordering of batches all uniforms need to be tracked for the programs. This allows us to create the full uniform state when the batch has been moved into a new position. Some care was taken as it can be performance sensitive. Attachment Snapshots Similar to uniform snapshots, we need to know all of the texture attachments so that we can rebind them when necessary. Render Jobs To help isolate the process of creating GL commands from the renderer abstraction a render job abstraction was added. This could be extended in the future if we decided to do tiling. Command Queue Render jobs create batches using the command queue. The command queue will snapshot uniform and attachment state so that it can reorder batches right before executing them. Currently, the only reordering done is to ensure that we only visit each render target once. We could extend this by tracking vertices, attachments, and others. This code currently uses an inline array helper to reduce overhead from GArray which was showing up on profiles. It could be changed to use GdkArray without too much work, but had roughly double the instructions. Cycle counts have not yet been determined. GLSL Programs This was simplified to use XMACROS so that we can just extend one file (gskglprograms.defs) instead of multiple places. The programs are added as fields in the driver for easy access. Driver The driver manages textures, render targets, access to atlases, programs, and more. There is one driver per display, by using the shared GL context. Some work could be done here to batch uploads so that we make fewer calls to upload when sending icon theme data to the GPU. We'd need to keep a copy of the atlas data for such purposes.
2020-12-19 01:36:59 +00:00
# include "gsknglprograms.defs"
#undef GSK_NGL_NO_UNIFORMS
#undef GSK_NGL_ADD_UNIFORM
#undef GSK_NGL_DEFINE_PROGRAM
gint64 current_frame_id;
/* Used to reduce number of comparisons */
guint stamps[UNIFORM_SHARED_LAST];
guint debug : 1;
guint in_frame : 1;
};
GskNglDriver *gsk_ngl_driver_from_shared_context (GdkGLContext *context,
gboolean debug_shaders,
GError **error);
GskNglCommandQueue *gsk_ngl_driver_create_command_queue (GskNglDriver *self,
GdkGLContext *context);
GdkGLContext *gsk_ngl_driver_get_context (GskNglDriver *self);
gboolean gsk_ngl_driver_create_render_target (GskNglDriver *self,
int width,
int height,
int min_filter,
int mag_filter,
GskNglRenderTarget **render_target);
guint gsk_ngl_driver_release_render_target (GskNglDriver *self,
GskNglRenderTarget *render_target,
gboolean release_texture);
void gsk_ngl_driver_begin_frame (GskNglDriver *self,
GskNglCommandQueue *command_queue);
void gsk_ngl_driver_end_frame (GskNglDriver *self);
void gsk_ngl_driver_after_frame (GskNglDriver *self);
GdkTexture *gsk_ngl_driver_create_gdk_texture (GskNglDriver *self,
guint texture_id);
void gsk_ngl_driver_cache_texture (GskNglDriver *self,
const GskTextureKey *key,
guint texture_id);
guint gsk_ngl_driver_load_texture (GskNglDriver *self,
GdkTexture *texture,
int min_filter,
int mag_filter);
GskNglTexture *gsk_ngl_driver_create_texture (GskNglDriver *self,
float width,
float height,
int min_filter,
int mag_filter);
void gsk_ngl_driver_release_texture (GskNglDriver *self,
GskNglTexture *texture);
void gsk_ngl_driver_release_texture_by_id (GskNglDriver *self,
guint texture_id);
GskNglTexture *gsk_ngl_driver_mark_texture_permanent (GskNglDriver *self,
guint texture_id);
void gsk_ngl_driver_add_texture_slices (GskNglDriver *self,
GdkTexture *texture,
GskNglTextureSlice **out_slices,
guint *out_n_slices);
GskNglProgram *gsk_ngl_driver_lookup_shader (GskNglDriver *self,
GskGLShader *shader,
GError **error);
GskNglTextureAtlas *gsk_ngl_driver_create_atlas (GskNglDriver *self);
#ifdef G_ENABLE_DEBUG
void gsk_ngl_driver_save_atlases_to_png (GskNglDriver *self,
const char *directory);
#endif
static inline GskNglTexture *
gsk_ngl_driver_get_texture_by_id (GskNglDriver *self,
guint texture_id)
{
return g_hash_table_lookup (self->textures, GUINT_TO_POINTER (texture_id));
}
/**
* gsk_ngl_driver_lookup_texture:
* @self: a #GskNglDriver
* @key: the key for the texture
*
* 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_ngl_driver_lookup_texture (GskNglDriver *self,
const GskTextureKey *key)
{
gpointer id;
if (g_hash_table_lookup_extended (self->key_to_texture_id, key, NULL, &id))
{
GskNglTexture *texture = g_hash_table_lookup (self->textures, id);
if (texture != NULL)
texture->last_used_in_frame = self->current_frame_id;
return GPOINTER_TO_UINT (id);
}
return 0;
}
static inline void
gsk_ngl_driver_slice_texture (GskNglDriver *self,
GdkTexture *texture,
GskNglTextureSlice **out_slices,
guint *out_n_slices)
{
GskNglTexture *t;
if ((t = gdk_texture_get_render_data (texture, self)))
{
*out_slices = t->slices;
*out_n_slices = t->n_slices;
return;
}
gsk_ngl_driver_add_texture_slices (self, texture, out_slices, out_n_slices);
}
G_END_DECLS
#endif /* __GSK_NGL_DRIVER_PRIVATE_H__ */
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