[gtk/mask-nodes: 39/39] gl: Render fill/stroke nodes using the mask shader
- From: Matthias Clasen <matthiasc src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/mask-nodes: 39/39] gl: Render fill/stroke nodes using the mask shader
- Date: Wed, 23 Dec 2020 04:51:20 +0000 (UTC)
commit a03a821840962d3f4eb3f91f3a00ee8128ba740d
Author: Matthias Clasen <mclasen redhat com>
Date: Mon Dec 14 20:35:39 2020 -0500
gl: Render fill/stroke nodes using the mask shader
Convert the path to an alpha mask and upload that
as a texture to use with the mask shader. We use
the path cache to reuse masks for the same path.
gsk/gl/gskglpathcache.c | 15 +++
gsk/gl/gskglpathcacheprivate.h | 4 +
gsk/gl/gskglrenderer.c | 222 ++++++++++++++++++++++++++++++++++++++++-
gsk/gl/gskglrenderopsprivate.h | 1 +
4 files changed, 239 insertions(+), 3 deletions(-)
---
diff --git a/gsk/gl/gskglpathcache.c b/gsk/gl/gskglpathcache.c
index 1dcb0c33d8..13f159e7c1 100644
--- a/gsk/gl/gskglpathcache.c
+++ b/gsk/gl/gskglpathcache.c
@@ -10,6 +10,8 @@ typedef struct
GskPath *path;
GskFillRule fill_rule;
const GskStroke *stroke;
+ float scale_x;
+ float scale_y;
guint hash;
GskStroke stroke_copy;
@@ -27,6 +29,8 @@ compute_hash (CacheItem *item)
hash += item->fill_rule;
if (item->stroke)
hash += gsk_stroke_hash (item->stroke);
+ hash += (int)(item->scale_x * 100);
+ hash += (int)(item->scale_y * 200);
return hash;
}
@@ -48,6 +52,8 @@ cache_key_equal (gconstpointer v1,
return item1->path == item2->path &&
item1->fill_rule == item2->fill_rule &&
+ item1->scale_x == item2->scale_x &&
+ item1->scale_y == item2->scale_y &&
(item1->stroke == item2->stroke ||
(item1->stroke && item2->stroke &&
gsk_stroke_equal (item1->stroke, item2->stroke)));
@@ -102,6 +108,8 @@ gsk_gl_path_cache_get_texture_id (GskGLPathCache *self,
GskPath *path,
GskFillRule fill_rule,
const GskStroke *stroke,
+ float scale_x,
+ float scale_y,
graphene_rect_t *out_bounds)
{
CacheItem key;
@@ -110,6 +118,8 @@ gsk_gl_path_cache_get_texture_id (GskGLPathCache *self,
key.path = path;
key.fill_rule = fill_rule;
key.stroke = stroke;
+ key.scale_x = scale_x;
+ key.scale_y = scale_y;
key.hash = compute_hash (&key);
item = g_hash_table_lookup (self->textures, &key);
@@ -130,6 +140,8 @@ gsk_gl_path_cache_commit (GskGLPathCache *self,
GskPath *path,
GskFillRule fill_rule,
const GskStroke *stroke,
+ float scale_x,
+ float scale_y,
int texture_id,
const graphene_rect_t *bounds)
{
@@ -147,6 +159,9 @@ gsk_gl_path_cache_commit (GskGLPathCache *self,
gsk_stroke_init_copy (&item->stroke_copy, stroke);
item->stroke = &item->stroke_copy;
}
+ item->scale_x = scale_x;
+ item->scale_y = scale_y;
+
item->hash = compute_hash (item);
item->unused_frames = 0;
diff --git a/gsk/gl/gskglpathcacheprivate.h b/gsk/gl/gskglpathcacheprivate.h
index 181d4be26f..cc2081c8ea 100644
--- a/gsk/gl/gskglpathcacheprivate.h
+++ b/gsk/gl/gskglpathcacheprivate.h
@@ -20,11 +20,15 @@ int gsk_gl_path_cache_get_texture_id (GskGLPathCache *self,
GskPath *path,
GskFillRule fill_rule,
const GskStroke *stroke,
+ float scale_x,
+ float scale_y,
graphene_rect_t *out_bounds);
void gsk_gl_path_cache_commit (GskGLPathCache *self,
GskPath *path,
GskFillRule fill_rule,
const GskStroke *stroke,
+ float scale_x,
+ float scale_y,
int texture_id,
const graphene_rect_t *bounds);
diff --git a/gsk/gl/gskglrenderer.c b/gsk/gl/gskglrenderer.c
index 09b7b4f0a1..4b70320b71 100644
--- a/gsk/gl/gskglrenderer.c
+++ b/gsk/gl/gskglrenderer.c
@@ -2764,6 +2764,217 @@ render_mask_node (GskGLRenderer *self,
load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
}
+static GdkTexture *
+make_path_mask (GskPath *path,
+ GskFillRule fill_rule,
+ float scale_x,
+ float scale_y,
+ graphene_rect_t *bounds)
+{
+ cairo_surface_t *surface;
+ cairo_t *cr;
+ int width;
+ int height;
+ int stride;
+ guchar *buffer;
+ GBytes *bytes;
+ GdkTexture *mask;
+
+ gsk_path_get_bounds (path, bounds);
+
+ width = ceilf (bounds->size.width * scale_x);
+ height = ceilf (bounds->size.height * scale_y);
+ stride = cairo_format_stride_for_width (CAIRO_FORMAT_ARGB32, width);
+
+ buffer = g_malloc0 (stride * height);
+ surface = cairo_image_surface_create_for_data (buffer,
+ CAIRO_FORMAT_ARGB32,
+ width, height,
+ stride);
+ cairo_surface_set_device_scale (surface, scale_x, scale_y);
+
+ cr = cairo_create (surface);
+ cairo_translate (cr, 0, bounds->size.height);
+ cairo_scale (cr, 1, -1);
+ cairo_translate (cr, - bounds->origin.x, - bounds->origin.y);
+
+ switch (fill_rule)
+ {
+ case GSK_FILL_RULE_WINDING:
+ cairo_set_fill_rule (cr, CAIRO_FILL_RULE_WINDING);
+ break;
+ case GSK_FILL_RULE_EVEN_ODD:
+ cairo_set_fill_rule (cr, CAIRO_FILL_RULE_EVEN_ODD);
+ break;
+ default:
+ g_assert_not_reached ();
+ break;
+ }
+
+ gsk_path_to_cairo (path, cr);
+ cairo_clip (cr);
+
+ cairo_set_source_rgb (cr, 0, 0, 0);
+ cairo_paint (cr);
+
+ cairo_destroy (cr);
+
+ bytes = g_bytes_new_take (buffer, stride * height);
+ mask = gdk_memory_texture_new (width, height, GDK_MEMORY_DEFAULT, bytes, stride);
+ g_bytes_unref (bytes);
+
+ cairo_surface_destroy (surface);
+
+ return mask;
+}
+
+static inline void
+render_fill_node (GskGLRenderer *self,
+ GskRenderNode *node,
+ RenderOpBuilder *builder)
+{
+ GskRenderNode *child = gsk_fill_node_get_child (node);
+ TextureRegion child_region;
+ gboolean is_offscreen1;
+ GskPath *path;
+ GskFillRule fill_rule;
+ graphene_rect_t mask_bounds;
+ int mask_texture_id;
+ OpMask *op;
+ float scale_x = builder->scale_x;
+ float scale_y = builder->scale_y;
+
+ if (!add_offscreen_ops (self, builder,
+ &node->bounds,
+ child,
+ &child_region, &is_offscreen1,
+ FORCE_OFFSCREEN | RESET_CLIP))
+ {
+ gsk_gl_renderer_add_render_ops (self, child, builder);
+ return;
+ }
+
+ path = gsk_fill_node_get_path (node);
+ fill_rule = gsk_fill_node_get_fill_rule (node);
+ mask_texture_id = gsk_gl_path_cache_get_texture_id (&self->path_cache,
+ path,
+ fill_rule,
+ NULL,
+ scale_x, scale_y,
+ &mask_bounds);
+ if (mask_texture_id == 0)
+ {
+ GdkTexture *mask;
+
+ mask = make_path_mask (path, fill_rule, scale_x, scale_y, &mask_bounds);
+
+ mask_texture_id =
+ gsk_gl_driver_get_texture_for_texture (self->gl_driver,
+ mask,
+ GL_LINEAR,
+ GL_LINEAR);
+
+ gsk_gl_driver_mark_texture_permanent (self->gl_driver, mask_texture_id);
+ gsk_gl_path_cache_commit (&self->path_cache,
+ path,
+ fill_rule,
+ NULL,
+ scale_x, scale_y,
+ mask_texture_id,
+ &mask_bounds);
+
+ g_object_unref (mask);
+ }
+
+ ops_set_program (builder, &self->programs->mask_program);
+
+ op = ops_begin (builder, OP_CHANGE_MASK);
+ op->mask = mask_texture_id;
+ op->texture_rect[0] = (mask_bounds.origin.x - node->bounds.origin.x) / node->bounds.size.width;
+ op->texture_rect[1] = (mask_bounds.origin.y - node->bounds.origin.y) / node->bounds.size.height;
+ op->texture_rect[2] = (mask_bounds.origin.x + mask_bounds.size.width - node->bounds.origin.x) /
node->bounds.size.width;
+ op->texture_rect[3] = (mask_bounds.origin.y + mask_bounds.size.height - node->bounds.origin.y) /
node->bounds.size.height;
+
+ ops_set_texture (builder, child_region.texture_id);
+
+ load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
+}
+
+static inline void
+render_stroke_node (GskGLRenderer *self,
+ GskRenderNode *node,
+ RenderOpBuilder *builder)
+{
+ GskRenderNode *child = gsk_stroke_node_get_child (node);
+ TextureRegion child_region;
+ gboolean is_offscreen1;
+ GskPath *path;
+ GskStroke *stroke;
+ int mask_texture_id;
+ graphene_rect_t mask_bounds;
+ OpMask *op;
+ float scale_x = builder->scale_x;
+ float scale_y = builder->scale_y;
+
+ if (!add_offscreen_ops (self, builder,
+ &node->bounds,
+ child,
+ &child_region, &is_offscreen1,
+ FORCE_OFFSCREEN | RESET_CLIP))
+ {
+ gsk_gl_renderer_add_render_ops (self, child, builder);
+ return;
+ }
+
+ path = gsk_stroke_node_get_path (node);
+ stroke = (GskStroke *)gsk_stroke_node_get_stroke (node);
+
+ mask_texture_id = gsk_gl_path_cache_get_texture_id (&self->path_cache,
+ path,
+ GSK_FILL_RULE_EVEN_ODD,
+ stroke,
+ scale_x, scale_y,
+ &mask_bounds);
+ if (mask_texture_id == 0)
+ {
+ GskPath *stroke_path;
+ GdkTexture *mask;
+
+ stroke_path = gsk_path_stroke (path, stroke);
+ mask = make_path_mask (stroke_path, GSK_FILL_RULE_EVEN_ODD, scale_x, scale_y, &mask_bounds);
+
+ mask_texture_id =
+ gsk_gl_driver_get_texture_for_texture (self->gl_driver,
+ mask,
+ GL_LINEAR,
+ GL_LINEAR);
+
+ gsk_gl_driver_mark_texture_permanent (self->gl_driver, mask_texture_id);
+ gsk_gl_path_cache_commit (&self->path_cache,
+ path,
+ GSK_FILL_RULE_EVEN_ODD,
+ stroke,
+ scale_x, scale_y,
+ mask_texture_id,
+ &mask_bounds);
+ g_object_unref (mask);
+ gsk_path_unref (stroke_path);
+ }
+
+ ops_set_program (builder, &self->programs->mask_program);
+
+ op = ops_begin (builder, OP_CHANGE_MASK);
+ op->mask = mask_texture_id;
+ op->texture_rect[0] = (mask_bounds.origin.x - node->bounds.origin.x) / node->bounds.size.width;
+ op->texture_rect[1] = (mask_bounds.origin.y - node->bounds.origin.y) / node->bounds.size.height;
+ op->texture_rect[2] = (mask_bounds.origin.x + mask_bounds.size.width - node->bounds.origin.x) /
node->bounds.size.width;
+ op->texture_rect[3] = (mask_bounds.origin.y + mask_bounds.size.height - node->bounds.origin.y) /
node->bounds.size.height;
+
+ ops_set_texture (builder, child_region.texture_id);
+
+ load_offscreen_vertex_data (ops_draw (builder, NULL), node, builder);
+}
+
static inline void
render_blend_node (GskGLRenderer *self,
GskRenderNode *node,
@@ -3493,7 +3704,6 @@ gsk_gl_renderer_create_programs (GskGLRenderer *self,
INIT_PROGRAM_UNIFORM_LOCATION (repeat, child_bounds);
INIT_PROGRAM_UNIFORM_LOCATION (repeat, texture_rect);
-
/* We initialize the alpha uniform here, since the default value is important.
* We can't do it in the shader like a reasonable person would because that doesn't
* work in gles. */
@@ -3875,10 +4085,16 @@ gsk_gl_renderer_add_render_ops (GskGLRenderer *self,
render_mask_node (self, node, builder);
break;
- case GSK_REPEATING_LINEAR_GRADIENT_NODE:
- case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_FILL_NODE:
+ render_fill_node (self, node, builder);
+ break;
+
case GSK_STROKE_NODE:
+ render_stroke_node (self, node, builder);
+ break;
+
+ case GSK_REPEATING_LINEAR_GRADIENT_NODE:
+ case GSK_REPEATING_RADIAL_GRADIENT_NODE:
case GSK_CAIRO_NODE:
default:
{
diff --git a/gsk/gl/gskglrenderopsprivate.h b/gsk/gl/gskglrenderopsprivate.h
index 3d02866b83..148b6b8df8 100644
--- a/gsk/gl/gskglrenderopsprivate.h
+++ b/gsk/gl/gskglrenderopsprivate.h
@@ -181,6 +181,7 @@ struct _Program
} glshader;
struct {
int mask_location;
+ int child_rect_location;
int texture_rect_location;
} mask;
};
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