From 2aa4a82499d4becd2284cdb482213d541b8804dd Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Sun, 28 Apr 2024 16:29:10 +0200
Subject: Adding upstream version 86.0.1.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 gfx/wr/webrender/res/cs_clip_box_shadow.glsl | 139 +++++++++++++++++++++++++++
 1 file changed, 139 insertions(+)
 create mode 100644 gfx/wr/webrender/res/cs_clip_box_shadow.glsl

(limited to 'gfx/wr/webrender/res/cs_clip_box_shadow.glsl')

diff --git a/gfx/wr/webrender/res/cs_clip_box_shadow.glsl b/gfx/wr/webrender/res/cs_clip_box_shadow.glsl
new file mode 100644
index 0000000000..cc8252fdb9
--- /dev/null
+++ b/gfx/wr/webrender/res/cs_clip_box_shadow.glsl
@@ -0,0 +1,139 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include shared,clip_shared
+
+varying vec4 vLocalPos;
+varying vec2 vUv;
+flat varying vec4 vUvBounds;
+flat varying float vLayer;
+flat varying vec4 vEdge;
+flat varying vec4 vUvBounds_NoClamp;
+flat varying float vClipMode;
+
+#define MODE_STRETCH        0
+#define MODE_SIMPLE         1
+
+#ifdef WR_VERTEX_SHADER
+
+PER_INSTANCE in ivec2 aClipDataResourceAddress;
+PER_INSTANCE in vec2 aClipSrcRectSize;
+PER_INSTANCE in int aClipMode;
+PER_INSTANCE in ivec2 aStretchMode;
+PER_INSTANCE in vec4 aClipDestRect;
+
+struct ClipMaskInstanceBoxShadow {
+    ClipMaskInstanceCommon shared;
+    ivec2 resource_address;
+};
+
+ClipMaskInstanceBoxShadow fetch_clip_item() {
+    ClipMaskInstanceBoxShadow cmi;
+
+    cmi.shared = fetch_clip_item_common();
+    cmi.resource_address = aClipDataResourceAddress;
+
+    return cmi;
+}
+
+struct BoxShadowData {
+    vec2 src_rect_size;
+    int clip_mode;
+    int stretch_mode_x;
+    int stretch_mode_y;
+    RectWithSize dest_rect;
+};
+
+BoxShadowData fetch_data() {
+    BoxShadowData bs_data = BoxShadowData(
+        aClipSrcRectSize,
+        aClipMode,
+        aStretchMode.x,
+        aStretchMode.y,
+        RectWithSize(aClipDestRect.xy, aClipDestRect.zw)
+    );
+    return bs_data;
+}
+
+void main(void) {
+    ClipMaskInstanceBoxShadow cmi = fetch_clip_item();
+    Transform clip_transform = fetch_transform(cmi.shared.clip_transform_id);
+    Transform prim_transform = fetch_transform(cmi.shared.prim_transform_id);
+    BoxShadowData bs_data = fetch_data();
+    ImageResource res = fetch_image_resource_direct(cmi.resource_address);
+
+    RectWithSize dest_rect = bs_data.dest_rect;
+
+    ClipVertexInfo vi = write_clip_tile_vertex(
+        dest_rect,
+        prim_transform,
+        clip_transform,
+        cmi.shared.sub_rect,
+        cmi.shared.task_origin,
+        cmi.shared.screen_origin,
+        cmi.shared.device_pixel_scale
+    );
+    vLayer = res.layer;
+    vClipMode = float(bs_data.clip_mode);
+
+    vec2 texture_size = vec2(textureSize(sColor0, 0));
+    vec2 local_pos = vi.local_pos.xy / vi.local_pos.w;
+    vLocalPos = vi.local_pos;
+
+    switch (bs_data.stretch_mode_x) {
+        case MODE_STRETCH: {
+            vEdge.x = 0.5;
+            vEdge.z = (dest_rect.size.x / bs_data.src_rect_size.x) - 0.5;
+            vUv.x = (local_pos.x - dest_rect.p0.x) / bs_data.src_rect_size.x;
+            break;
+        }
+        case MODE_SIMPLE:
+        default: {
+            vEdge.xz = vec2(1.0);
+            vUv.x = (local_pos.x - dest_rect.p0.x) / dest_rect.size.x;
+            break;
+        }
+    }
+
+    switch (bs_data.stretch_mode_y) {
+        case MODE_STRETCH: {
+            vEdge.y = 0.5;
+            vEdge.w = (dest_rect.size.y / bs_data.src_rect_size.y) - 0.5;
+            vUv.y = (local_pos.y - dest_rect.p0.y) / bs_data.src_rect_size.y;
+            break;
+        }
+        case MODE_SIMPLE:
+        default: {
+            vEdge.yw = vec2(1.0);
+            vUv.y = (local_pos.y - dest_rect.p0.y) / dest_rect.size.y;
+            break;
+        }
+    }
+
+    vUv *= vi.local_pos.w;
+    vec2 uv0 = res.uv_rect.p0;
+    vec2 uv1 = res.uv_rect.p1;
+    vUvBounds = vec4(uv0 + vec2(0.5), uv1 - vec2(0.5)) / texture_size.xyxy;
+    vUvBounds_NoClamp = vec4(uv0, uv1) / texture_size.xyxy;
+}
+#endif
+
+#ifdef WR_FRAGMENT_SHADER
+void main(void) {
+    vec2 uv_linear = vUv / vLocalPos.w;
+    vec2 uv = clamp(uv_linear, vec2(0.0), vEdge.xy);
+    uv += max(vec2(0.0), uv_linear - vEdge.zw);
+    uv = mix(vUvBounds_NoClamp.xy, vUvBounds_NoClamp.zw, uv);
+    uv = clamp(uv, vUvBounds.xy, vUvBounds.zw);
+
+    float in_shadow_rect = init_transform_rough_fs(vLocalPos.xy / vLocalPos.w);
+
+    float texel = TEX_SAMPLE(sColor0, vec3(uv, vLayer)).r;
+
+    float alpha = mix(texel, 1.0 - texel, vClipMode);
+    float result = vLocalPos.w > 0.0 ? mix(vClipMode, alpha, in_shadow_rect) : 0.0;
+
+    oFragColor = vec4(result);
+}
+#endif
-- 
cgit v1.2.3