[gtk/wip/chergert/glproto: 200/493] stub out blurred outset shadow
- From: Christian Hergert <chergert src gnome org>
- To: commits-list gnome org
- Cc:
- Subject: [gtk/wip/chergert/glproto: 200/493] stub out blurred outset shadow
- Date: Fri, 19 Feb 2021 02:25:10 +0000 (UTC)
commit 185c8769154bff12728370f8d08b8e8a82ea7847
Author: Christian Hergert <chergert redhat com>
Date: Thu Jan 14 18:48:17 2021 -0800
stub out blurred outset shadow
gsk/next/gskglrenderjob.c | 322 +++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 321 insertions(+), 1 deletion(-)
---
diff --git a/gsk/next/gskglrenderjob.c b/gsk/next/gskglrenderjob.c
index 2ad68299aa..3d45bfb2a7 100644
--- a/gsk/next/gskglrenderjob.c
+++ b/gsk/next/gskglrenderjob.c
@@ -36,10 +36,12 @@
#include "gskgldriverprivate.h"
#include "gskglprogramprivate.h"
#include "gskglrenderjobprivate.h"
+#include "gskglshadowlibraryprivate.h"
#define ORTHO_NEAR_PLANE -10000
#define ORTHO_FAR_PLANE 10000
#define MAX_GRADIENT_STOPS 6
+#define SHADOW_EXTRA_SIZE 4
#define X1(r) ((r)->origin.x)
#define X2(r) ((r)->origin.x + (r)->size.width)
#define Y1(r) ((r)->origin.y)
@@ -150,6 +152,15 @@ node_is_invisible (const GskRenderNode *node)
isnan (node->bounds.size.height);
}
+static inline void
+gsk_rounded_rect_shrink_to_minimum (GskRoundedRect *self)
+{
+ self->bounds.size.width = MAX (self->corner[0].width + self->corner[1].width,
+ self->corner[3].width + self->corner[2].width);
+ self->bounds.size.height = MAX (self->corner[0].height + self->corner[3].height,
+ self->corner[1].height + self->corner[2].height);
+}
+
static inline gboolean G_GNUC_PURE
node_supports_transform (GskRenderNode *node)
{
@@ -2026,7 +2037,316 @@ static void
gsk_gl_render_job_visit_blurred_outset_shadow_node (GskGLRenderJob *job,
GskRenderNode *node)
{
- gsk_gl_render_job_visit_as_fallback (job, node);
+ const GskRoundedRect *outline = gsk_outset_shadow_node_get_outline (node);
+ const GdkRGBA *color = gsk_outset_shadow_node_get_color (node);
+ const float scale_x = job->scale_x;
+ const float scale_y = job->scale_y;
+ const float blur_radius = gsk_outset_shadow_node_get_blur_radius (node);
+ const float blur_extra = blur_radius * 2.0f; /* 2.0 = shader radius_multiplier */
+ const int extra_blur_pixels = (int) ceilf(blur_extra / 2.0 * MAX (scale_x, scale_y)); /* TODO: No need to
MAX() here actually */
+ const float spread = gsk_outset_shadow_node_get_spread (node);
+ const float dx = gsk_outset_shadow_node_get_dx (node);
+ const float dy = gsk_outset_shadow_node_get_dy (node);
+ GskRoundedRect scaled_outline;
+ int texture_width, texture_height;
+ int blurred_texture_id;
+ int cached_tid;
+ gboolean do_slicing;
+
+ /* scaled_outline is the minimal outline we need to draw the given drop shadow,
+ * enlarged by the spread and offset by the blur radius. */
+ scaled_outline = *outline;
+
+ if (outline->bounds.size.width < blur_extra ||
+ outline->bounds.size.height < blur_extra)
+ {
+ do_slicing = false;
+ gsk_rounded_rect_shrink (&scaled_outline, -spread, -spread, -spread, -spread);
+ }
+ else
+ {
+ /* Shrink our outline to the minimum size that can still hold all the border radii */
+ gsk_rounded_rect_shrink_to_minimum (&scaled_outline);
+ /* Increase by the spread */
+ gsk_rounded_rect_shrink (&scaled_outline, -spread, -spread, -spread, -spread);
+ /* Grow bounds but don't grow corners */
+ graphene_rect_inset (&scaled_outline.bounds, - blur_extra / 2.0, - blur_extra / 2.0);
+ /* For the center part, we add a few pixels */
+ scaled_outline.bounds.size.width += SHADOW_EXTRA_SIZE;
+ scaled_outline.bounds.size.height += SHADOW_EXTRA_SIZE;
+
+ do_slicing = true;
+ }
+
+ texture_width = (int)ceil ((scaled_outline.bounds.size.width + blur_extra) * scale_x);
+ texture_height = (int)ceil ((scaled_outline.bounds.size.height + blur_extra) * scale_y);
+
+ scaled_outline.bounds.origin.x = extra_blur_pixels;
+ scaled_outline.bounds.origin.y = extra_blur_pixels;
+ scaled_outline.bounds.size.width = texture_width - (extra_blur_pixels * 2);
+ scaled_outline.bounds.size.height = texture_height - (extra_blur_pixels * 2);
+
+ for (guint i = 0; i < 4; i ++)
+ {
+ scaled_outline.corner[i].width *= scale_x;
+ scaled_outline.corner[i].height *= scale_y;
+ }
+
+#if 0
+ cached_tid = gsk_gl_shadow_library_get_texture_id (job->driver->shadows,
+ &scaled_outline,
+ blur_radius);
+
+
+ if (cached_tid == 0)
+ {
+ int texture_id, render_target;
+ int prev_render_target;
+ graphene_matrix_t prev_projection;
+ graphene_rect_t prev_viewport;
+ graphene_matrix_t item_proj;
+
+ gsk_gl_driver_create_render_target (self->gl_driver,
+ texture_width, texture_height,
+ GL_NEAREST, GL_NEAREST,
+ &texture_id, &render_target);
+ if (gdk_gl_context_has_debug (self->gl_context))
+ {
+ gdk_gl_context_label_object_printf (self->gl_context, GL_TEXTURE, texture_id,
+ "Outset Shadow Temp %d", texture_id);
+ gdk_gl_context_label_object_printf (self->gl_context, GL_FRAMEBUFFER, render_target,
+ "Outset Shadow FB Temp %d", render_target);
+ }
+
+ ops_set_program (builder, &self->programs->color_program);
+ init_projection_matrix (&item_proj,
+ &GRAPHENE_RECT_INIT (0, 0, texture_width, texture_height));
+
+ prev_render_target = ops_set_render_target (builder, render_target);
+ ops_begin (builder, OP_CLEAR);
+ prev_projection = ops_set_projection (builder, &item_proj);
+ ops_set_modelview (builder, NULL);
+ prev_viewport = ops_set_viewport (builder, &GRAPHENE_RECT_INIT (0, 0, texture_width, texture_height));
+
+ /* Draw outline */
+ ops_push_clip (builder, &scaled_outline);
+ ops_set_color (builder, &COLOR_WHITE);
+ load_float_vertex_data (ops_draw (builder, NULL), builder,
+ 0, 0, texture_width, texture_height);
+
+ ops_pop_clip (builder);
+ ops_set_viewport (builder, &prev_viewport);
+ ops_pop_modelview (builder);
+ ops_set_projection (builder, &prev_projection);
+ ops_set_render_target (builder, prev_render_target);
+
+ /* Now blur the outline */
+ blurred_texture_id = blur_texture (self, builder,
+ &(TextureRegion) { texture_id, 0, 0, 1, 1 },
+ texture_width,
+ texture_height,
+ blur_radius * scale_x,
+ blur_radius * scale_y);
+
+ gsk_gl_driver_mark_texture_permanent (self->gl_driver, blurred_texture_id);
+ gsk_gl_shadow_cache_commit (&self->shadow_cache,
+ &scaled_outline,
+ blur_radius,
+ blurred_texture_id);
+ }
+ else
+ {
+ blurred_texture_id = cached_tid;
+ }
+
+
+ if (!do_slicing)
+ {
+ const float min_x = floorf (outline->bounds.origin.x - spread - (blur_extra / 2.0) + dx);
+ const float min_y = floorf (outline->bounds.origin.y - spread - (blur_extra / 2.0) + dy);
+
+ ops_set_program (builder, &self->programs->outset_shadow_program);
+ ops_set_color (builder, color);
+ ops_set_texture (builder, blurred_texture_id);
+
+ shadow = ops_begin (builder, OP_CHANGE_OUTSET_SHADOW);
+ shadow->outline.value = transform_rect (self, builder, outline);
+ shadow->outline.send = TRUE;
+
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x, min_y,
+ texture_width / scale_x, texture_height / scale_y
+ ), builder,
+ &(TextureRegion) { 0, 0, 0, 1, 1 },
+ FALSE);
+ return;
+ }
+
+
+ ops_set_program (builder, &self->programs->outset_shadow_program);
+ ops_set_color (builder, color);
+ ops_set_texture (builder, blurred_texture_id);
+
+ shadow = ops_begin (builder, OP_CHANGE_OUTSET_SHADOW);
+ shadow->outline.value = transform_rect (self, builder, outline);
+ shadow->outline.send = TRUE;
+
+ {
+ const float min_x = floorf (outline->bounds.origin.x - spread - (blur_extra / 2.0) + dx);
+ const float min_y = floorf (outline->bounds.origin.y - spread - (blur_extra / 2.0) + dy);
+ const float max_x = ceilf (outline->bounds.origin.x + outline->bounds.size.width +
+ (blur_extra / 2.0) + dx + spread);
+ const float max_y = ceilf (outline->bounds.origin.y + outline->bounds.size.height +
+ (blur_extra / 2.0) + dy + spread);
+ cairo_rectangle_int_t slices[9];
+ TextureRegion tregs[9];
+
+ /* TODO: The slicing never changes and could just go into the cache */
+ nine_slice_rounded_rect (&scaled_outline, slices);
+ nine_slice_grow (slices, extra_blur_pixels);
+ nine_slice_to_texture_coords (slices, texture_width, texture_height, tregs);
+
+ /* Our texture coordinates MUST be scaled, while the actual vertex coords
+ * MUST NOT be scaled. */
+
+ /* Top left */
+ if (slice_is_visible (&slices[NINE_SLICE_TOP_LEFT]))
+ {
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x, min_y,
+ slices[NINE_SLICE_TOP_LEFT].width / scale_x,
+ slices[NINE_SLICE_TOP_LEFT].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_TOP_LEFT], TRUE);
+ }
+
+ /* Top center */
+ if (slice_is_visible (&slices[NINE_SLICE_TOP_CENTER]))
+ {
+ const float width = (max_x - min_x) - (slices[NINE_SLICE_TOP_LEFT].width / scale_x +
+ slices[NINE_SLICE_TOP_RIGHT].width / scale_x);
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x + (slices[NINE_SLICE_TOP_LEFT].width / scale_x),
+ min_y,
+ width,
+ slices[NINE_SLICE_TOP_CENTER].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_TOP_CENTER], TRUE);
+ }
+ /* Top right */
+ if (slice_is_visible (&slices[NINE_SLICE_TOP_RIGHT]))
+ {
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ max_x - (slices[NINE_SLICE_TOP_RIGHT].width / scale_x),
+ min_y,
+ slices[NINE_SLICE_TOP_RIGHT].width / scale_x,
+ slices[NINE_SLICE_TOP_RIGHT].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_TOP_RIGHT], TRUE);
+ }
+
+ /* Bottom right */
+ if (slice_is_visible (&slices[NINE_SLICE_BOTTOM_RIGHT]))
+ {
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ max_x - (slices[NINE_SLICE_BOTTOM_RIGHT].width / scale_x),
+ max_y - (slices[NINE_SLICE_BOTTOM_RIGHT].height / scale_y),
+ slices[NINE_SLICE_BOTTOM_RIGHT].width / scale_x,
+ slices[NINE_SLICE_BOTTOM_RIGHT].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_BOTTOM_RIGHT], TRUE);
+ }
+
+ /* Bottom left */
+ if (slice_is_visible (&slices[NINE_SLICE_BOTTOM_LEFT]))
+ {
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x,
+ max_y - (slices[NINE_SLICE_BOTTOM_LEFT].height / scale_y),
+ slices[NINE_SLICE_BOTTOM_LEFT].width / scale_x,
+ slices[NINE_SLICE_BOTTOM_LEFT].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_BOTTOM_LEFT], TRUE);
+ }
+
+ /* Left side */
+ if (slice_is_visible (&slices[NINE_SLICE_LEFT_CENTER]))
+ {
+ const float height = (max_y - min_y) - (slices[NINE_SLICE_TOP_LEFT].height / scale_y +
+ slices[NINE_SLICE_BOTTOM_LEFT].height / scale_y);
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x,
+ min_y + (slices[NINE_SLICE_TOP_LEFT].height / scale_y),
+ slices[NINE_SLICE_LEFT_CENTER].width / scale_x,
+ height
+ ),
+ builder,
+ &tregs[NINE_SLICE_LEFT_CENTER], TRUE);
+ }
+
+ /* Right side */
+ if (slice_is_visible (&slices[NINE_SLICE_RIGHT_CENTER]))
+ {
+ const float height = (max_y - min_y) - (slices[NINE_SLICE_TOP_RIGHT].height / scale_y +
+ slices[NINE_SLICE_BOTTOM_RIGHT].height / scale_y);
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ max_x - (slices[NINE_SLICE_RIGHT_CENTER].width / scale_x),
+ min_y + (slices[NINE_SLICE_TOP_LEFT].height / scale_y),
+ slices[NINE_SLICE_RIGHT_CENTER].width / scale_x,
+ height
+ ),
+ builder,
+ &tregs[NINE_SLICE_RIGHT_CENTER], TRUE);
+ }
+
+ /* Bottom side */
+ if (slice_is_visible (&slices[NINE_SLICE_BOTTOM_CENTER]))
+ {
+ const float width = (max_x - min_x) - (slices[NINE_SLICE_BOTTOM_LEFT].width / scale_x +
+ slices[NINE_SLICE_BOTTOM_RIGHT].width / scale_x);
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x + (slices[NINE_SLICE_BOTTOM_LEFT].width / scale_x),
+ max_y - (slices[NINE_SLICE_BOTTOM_CENTER].height / scale_y),
+ width,
+ slices[NINE_SLICE_BOTTOM_CENTER].height / scale_y
+ ),
+ builder,
+ &tregs[NINE_SLICE_BOTTOM_CENTER], TRUE);
+ }
+
+ /* Middle */
+ if (slice_is_visible (&slices[NINE_SLICE_CENTER]))
+ {
+ const float width = (max_x - min_x) - (slices[NINE_SLICE_LEFT_CENTER].width / scale_x +
+ slices[NINE_SLICE_RIGHT_CENTER].width / scale_x);
+ const float height = (max_y - min_y) - (slices[NINE_SLICE_TOP_CENTER].height / scale_y +
+ slices[NINE_SLICE_BOTTOM_CENTER].height / scale_y);
+
+ load_vertex_data_with_region (ops_draw (builder, NULL),
+ &GRAPHENE_RECT_INIT (
+ min_x + (slices[NINE_SLICE_LEFT_CENTER].width / scale_x),
+ min_y + (slices[NINE_SLICE_TOP_CENTER].height / scale_y),
+ width, height
+ ),
+ builder,
+ &tregs[NINE_SLICE_CENTER], TRUE);
+ }
+ }
+#endif
}
static inline bool G_GNUC_PURE
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