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-rw-r--r--src/video_core/host_shaders/astc_decoder.comp80
1 files changed, 46 insertions, 34 deletions
diff --git a/src/video_core/host_shaders/astc_decoder.comp b/src/video_core/host_shaders/astc_decoder.comp
index f34c5f5d9..3a10578cb 100644
--- a/src/video_core/host_shaders/astc_decoder.comp
+++ b/src/video_core/host_shaders/astc_decoder.comp
@@ -155,9 +155,6 @@ uint SwizzleOffset(uvec2 pos) {
// Replicates low num_bits such that [(to_bit - 1):(to_bit - 1 - from_bit)]
// is the same as [(num_bits - 1):0] and repeats all the way down.
uint Replicate(uint val, uint num_bits, uint to_bit) {
- if (num_bits == 0 || to_bit == 0) {
- return 0;
- }
const uint v = val & uint((1 << num_bits) - 1);
uint res = v;
uint reslen = num_bits;
@@ -187,42 +184,57 @@ uint ReplicateBitTo9(uint value) {
return REPLICATE_1_BIT_TO_9_TABLE[value];
}
-uint FastReplicateTo8(uint value, uint num_bits) {
- switch (num_bits) {
- case 1:
- return REPLICATE_1_BIT_TO_8_TABLE[value];
- case 2:
- return REPLICATE_2_BIT_TO_8_TABLE[value];
- case 3:
- return REPLICATE_3_BIT_TO_8_TABLE[value];
- case 4:
- return REPLICATE_4_BIT_TO_8_TABLE[value];
- case 5:
- return REPLICATE_5_BIT_TO_8_TABLE[value];
- case 6:
- return REPLICATE_6_BIT_TO_8_TABLE[value];
- case 7:
- return REPLICATE_7_BIT_TO_8_TABLE[value];
- case 8:
+uint FastReplicate(uint value, uint num_bits, uint to_bit) {
+ if (num_bits == 0) {
+ return 0;
+ }
+ if (num_bits == to_bit) {
return value;
}
- return Replicate(value, num_bits, 8);
+ if (to_bit == 6) {
+ switch (num_bits) {
+ case 1:
+ return REPLICATE_1_BIT_TO_6_TABLE[value];
+ case 2:
+ return REPLICATE_2_BIT_TO_6_TABLE[value];
+ case 3:
+ return REPLICATE_3_BIT_TO_6_TABLE[value];
+ case 4:
+ return REPLICATE_4_BIT_TO_6_TABLE[value];
+ case 5:
+ return REPLICATE_5_BIT_TO_6_TABLE[value];
+ default:
+ break;
+ }
+ } else { /* if (to_bit == 8) */
+ switch (num_bits) {
+ case 1:
+ return REPLICATE_1_BIT_TO_8_TABLE[value];
+ case 2:
+ return REPLICATE_2_BIT_TO_8_TABLE[value];
+ case 3:
+ return REPLICATE_3_BIT_TO_8_TABLE[value];
+ case 4:
+ return REPLICATE_4_BIT_TO_8_TABLE[value];
+ case 5:
+ return REPLICATE_5_BIT_TO_8_TABLE[value];
+ case 6:
+ return REPLICATE_6_BIT_TO_8_TABLE[value];
+ case 7:
+ return REPLICATE_7_BIT_TO_8_TABLE[value];
+ default:
+ break;
+ }
+ }
+ return Replicate(value, num_bits, to_bit);
+}
+
+uint FastReplicateTo8(uint value, uint num_bits) {
+ return FastReplicate(value, num_bits, 8);
}
uint FastReplicateTo6(uint value, uint num_bits) {
- switch (num_bits) {
- case 1:
- return REPLICATE_1_BIT_TO_6_TABLE[value];
- case 2:
- return REPLICATE_2_BIT_TO_6_TABLE[value];
- case 3:
- return REPLICATE_3_BIT_TO_6_TABLE[value];
- case 4:
- return REPLICATE_4_BIT_TO_6_TABLE[value];
- case 5:
- return REPLICATE_5_BIT_TO_6_TABLE[value];
- }
- return Replicate(value, num_bits, 6);
+ return FastReplicate(value, num_bits, 6);
}
uint Div3Floor(uint v) {