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vulkan_ffv1: externalize extended lookup check

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8% speedup on nvidia on 4k.
This commit is contained in:
Lynne
2025-04-06 07:45:44 +00:00
parent 77f777d925
commit 8ceabb677c
2 changed files with 7 additions and 2 deletions
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3
libavcodec/vulkan/ffv1_dec.comp
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@ -47,8 +47,7 @@ ivec2 get_pred(ivec2 sp, ivec2 off, int p, int sw, uint8_t quant_table_idx)
quant_table[quant_table_idx][1][(top[0] - top[1]) & MAX_QUANT_TABLE_MASK] +
quant_table[quant_table_idx][2][(top[1] - top[2]) & MAX_QUANT_TABLE_MASK];
if ((quant_table[quant_table_idx][3][127] != 0) ||
(quant_table[quant_table_idx][4][127] != 0)) {
if (extend_lookup[quant_table_idx] > 0) {
TYPE cur2 = TYPE(0);
if (off.x > 0) {
const ivec2 yoff_border2 = off.x == 1 ? ivec2(-1, -1) : ivec2(-2, 0);

6
libavcodec/vulkan_ffv1.c
View File

@ -88,6 +88,7 @@ typedef struct FFv1VkParameters {
uint32_t crcref;
int rct_offset;
uint8_t extend_lookup[8];
uint8_t bits_per_raw_sample;
uint8_t quant_table_count;
uint8_t version;
@ -120,6 +121,7 @@ static void add_push_data(FFVulkanShader *shd)
GLSLC(1, uint32_t crcref; );
GLSLC(1, int rct_offset; );
GLSLC(0, );
GLSLC(1, uint8_t extend_lookup[8]; );
GLSLC(1, uint8_t bits_per_raw_sample; );
GLSLC(1, uint8_t quant_table_count; );
GLSLC(1, uint8_t version; );
@ -456,6 +458,10 @@ static int vk_ffv1_end_frame(AVCodecContext *avctx)
.golomb = f->ac == AC_GOLOMB_RICE,
.check_crc = !!(avctx->err_recognition & AV_EF_CRCCHECK),
};
for (int i = 0; i < f->quant_table_count; i++)
pd.extend_lookup[i] = (f->quant_tables[i][3][127] != 0) ||
(f->quant_tables[i][4][127] != 0);
/* For some reason the C FFv1 encoder/decoder treats these differently */
if (sw_format == AV_PIX_FMT_GBRP10 || sw_format == AV_PIX_FMT_GBRP12 ||