Adding upstream version 86.0.1.upstream/86.0.1upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 67 insertions, 0 deletions

diff --git a/gfx/wr/webrender/res/cs_scale.glsl b/gfx/wr/webrender/res/cs_scale.glsl
new file mode 100644
index 0000000000..b046a2503d
--- /dev/null
+++ b/gfx/wr/webrender/res/cs_scale.glsl
@@ -0,0 +1,67 @@
+/* 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,prim_shared
+
+varying vec2 vUv;
+flat varying float vUvLayer;
+flat varying vec4 vUvRect;
+
+#ifdef WR_VERTEX_SHADER
+
+PER_INSTANCE in vec4 aScaleTargetRect;
+PER_INSTANCE in ivec4 aScaleSourceRect;
+PER_INSTANCE in int aScaleSourceLayer;
+
+void main(void) {
+    RectWithSize src_rect = RectWithSize(vec2(aScaleSourceRect.xy), vec2(aScaleSourceRect.zw));
+
+    // If this is in WR_FEATURE_TEXTURE_RECT mode, the rect and size use
+    // non-normalized texture coordinates.
+#ifdef WR_FEATURE_TEXTURE_RECT
+    vec2 texture_size = vec2(1, 1);
+#else
+    vec2 texture_size = vec2(textureSize(sColor0, 0));
+#endif
+
+    vUvLayer = float(aScaleSourceLayer);
+
+    vUvRect = vec4(src_rect.p0 + vec2(0.5),
+                   src_rect.p0 + src_rect.size - vec2(0.5)) / texture_size.xyxy;
+
+    vec2 pos = aScaleTargetRect.xy + aScaleTargetRect.zw * aPosition.xy;
+    vUv = (src_rect.p0 + src_rect.size * aPosition.xy) / texture_size;
+
+    gl_Position = uTransform * vec4(pos, 0.0, 1.0);
+}
+
+#endif
+
+#ifdef WR_FRAGMENT_SHADER
+
+void main(void) {
+    vec2 st = clamp(vUv, vUvRect.xy, vUvRect.zw);
+    oFragColor = TEX_SAMPLE(sColor0, vec3(st, vUvLayer));
+}
+
+#ifdef SWGL
+void swgl_drawSpanRGBA8() {
+    if (!swgl_isTextureRGBA8(sColor0)) {
+        return;
+    }
+
+    int layer = swgl_textureLayerOffset(sColor0, vUvLayer);
+    vec2 uv = swgl_linearQuantize(sColor0, vUv);
+    vec2 min_uv = swgl_linearQuantize(sColor0, vUvRect.xy);
+    vec2 max_uv = swgl_linearQuantize(sColor0, vUvRect.zw);
+    vec2 step_uv = swgl_linearQuantizeStep(sColor0, swgl_interpStep(vUv));
+
+    while (swgl_SpanLength > 0) {
+        swgl_commitTextureLinearRGBA8(sColor0, clamp(uv, min_uv, max_uv), layer);
+        uv += step_uv;
+    }
+}
+#endif
+
+#endif