1 files changed, 93 insertions, 0 deletions
diff --git a/shaders/spv/shader_blend_pyr.comp b/shaders/spv/shader_blend_pyr.comp
new file mode 100644
index 0000000..77ff1a9
--- /dev/null
+++ b/shaders/spv/shader_blend_pyr.comp
@@ -0,0 +1,93 @@
+#version 310 es
+
+layout (local_size_x = 8, local_size_y = 8) in;
+
+layout (binding = 0) readonly buffer In0BufY {
+    uvec2 data[];
+} in0_buf_y;
+
+layout (binding = 1) readonly buffer In0BufUV {
+    uvec2 data[];
+} in0_buf_uv;
+
+layout (binding = 2) readonly buffer In1BufY {
+    uvec2 data[];
+} in1_buf_y;
+
+layout (binding = 3) readonly buffer In1BufUV {
+    uvec2 data[];
+} in1_buf_uv;
+
+layout (binding = 4) writeonly buffer OutBufY {
+    uvec2 data[];
+} out_buf_y;
+
+layout (binding = 5) writeonly buffer OutBufUV {
+    uvec2 data[];
+} out_buf_uv;
+
+layout (binding = 6) readonly buffer MaskBuf {
+    uvec2 data[];
+} mask_buf;
+
+layout (push_constant) uniform PushConsts {
+    uint in_img_width;
+} prop;
+
+void main ()
+{
+    uvec2 g_id = gl_GlobalInvocationID.xy;
+    g_id.x = clamp (g_id.x, 0u, prop.in_img_width - 1u);
+
+    uvec2 mask = mask_buf.data[g_id.x];
+    vec4 mask0 = unpackUnorm4x8 (mask.x);
+    vec4 mask1 = unpackUnorm4x8 (mask.y);
+
+    uint y_idx = g_id.y * 2u * prop.in_img_width + g_id.x;
+    uvec2 in0_y = in0_buf_y.data[y_idx];
+    vec4 in0_y0 = unpackUnorm4x8 (in0_y.x);
+    vec4 in0_y1 = unpackUnorm4x8 (in0_y.y);
+
+    uvec2 in1_y = in1_buf_y.data[y_idx];
+    vec4 in1_y0 = unpackUnorm4x8 (in1_y.x);
+    vec4 in1_y1 = unpackUnorm4x8 (in1_y.y);
+
+    vec4 out_y0 = (in0_y0 - in1_y0) * mask0 + in1_y0;
+    vec4 out_y1 = (in0_y1 - in1_y1) * mask1 + in1_y1;
+    out_y0 = clamp (out_y0, 0.0f, 1.0f);
+    out_y1 = clamp (out_y1, 0.0f, 1.0f);
+    out_buf_y.data[y_idx] = uvec2 (packUnorm4x8 (out_y0), packUnorm4x8 (out_y1));
+
+    y_idx += prop.in_img_width;
+    in0_y = in0_buf_y.data[y_idx];
+    in0_y0 = unpackUnorm4x8 (in0_y.x);
+    in0_y1 = unpackUnorm4x8 (in0_y.y);
+
+    in1_y = in1_buf_y.data[y_idx];
+    in1_y0 = unpackUnorm4x8 (in1_y.x);
+    in1_y1 = unpackUnorm4x8 (in1_y.y);
+
+    out_y0 = (in0_y0 - in1_y0) * mask0 + in1_y0;
+    out_y1 = (in0_y1 - in1_y1) * mask1 + in1_y1;
+    out_y0 = clamp (out_y0, 0.0f, 1.0f);
+    out_y1 = clamp (out_y1, 0.0f, 1.0f);
+    out_buf_y.data[y_idx] = uvec2 (packUnorm4x8 (out_y0), packUnorm4x8 (out_y1));
+
+    uint uv_idx = g_id.y * prop.in_img_width + g_id.x;
+    uvec2 in0_uv = in0_buf_uv.data[uv_idx];
+    vec4 in0_uv0 = unpackUnorm4x8 (in0_uv.x);
+    vec4 in0_uv1 = unpackUnorm4x8 (in0_uv.y);
+
+    uvec2 in1_uv = in1_buf_uv.data[uv_idx];
+    vec4 in1_uv0 = unpackUnorm4x8 (in1_uv.x);
+    vec4 in1_uv1 = unpackUnorm4x8 (in1_uv.y);
+
+    mask0.yw = mask0.xz;
+    mask1.yw = mask1.xz;
+    vec4 out_uv0 = (in0_uv0 - in1_uv0) * mask0 + in1_uv0;
+    vec4 out_uv1 = (in0_uv1 - in1_uv1) * mask1 + in1_uv1;
+
+    out_uv0 = clamp (out_uv0, 0.0f, 1.0f);
+    out_uv1 = clamp (out_uv1, 0.0f, 1.0f);
+    out_buf_uv.data[uv_idx] = uvec2 (packUnorm4x8 (out_uv0), packUnorm4x8 (out_uv1));
+}