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gallium/auxiliary: Fix util_compute_blit half texel offset with scaling

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Video textures include padding, so make sure to not sample outside
src rect. Also remove the parameter and always use the offset.

When not scaling, this fixes blurry output.
When scaling, this fixes incorrect color at right/bottom edge.

Acked-by: Leo Liu <leo.liu@amd.com>
Reviewed-by: Thong Thai <thong.thai@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/24869>
This commit is contained in:
David Rosca 2023-07-27 13:22:18 +02:00 • committed by Marge Bot
parent 959801d9d9
commit 7c8e1596d6
3 changed files with 13 additions and 7 deletions
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16
src/gallium/auxiliary/util/u_compute.c
View file

@ -48,13 +48,16 @@ static void *blit_compute_shader(struct pipe_context *ctx)
"DCL IMAGE[0], 2D_ARRAY, PIPE_FORMAT_R32G32B32A32_FLOAT, WR\n"
"DCL SAMP[0]\n"
"DCL SVIEW[0], 2D_ARRAY, FLOAT\n"
"DCL CONST[0][0..2]\n" // 0:xyzw 1:xyzw
"DCL CONST[0][0..3]\n" // 0:xyzw 1:xyzw
"DCL TEMP[0..4], LOCAL\n"
"IMM[0] UINT32 {64, 1, 0, 0}\n"
"IMM[1] FLT32 {0.5, 0, 0, 0}\n"
"UMAD TEMP[0].xyz, SV[1].xyzz, IMM[0].xyyy, SV[0].xyzz\n"
"U2F TEMP[1].xyz, TEMP[0]\n"
"ADD TEMP[1].xy, TEMP[1].xyyy, IMM[1].xxxx\n"
"MAD TEMP[2].xyz, TEMP[1], CONST[0][1], CONST[0][0]\n"
"MIN TEMP[2].xy, TEMP[2].xyyy, CONST[0][3].xyyy\n"
"TEX_LZ TEMP[3], TEMP[2], SAMP[0], 2D_ARRAY\n"
"UADD TEMP[4].xyz, TEMP[0], CONST[0][2]\n"
"STORE IMAGE[0], TEMP[4], TEMP[3], 2D_ARRAY, PIPE_FORMAT_R32G32B32A32_FLOAT\n"
@ -75,7 +78,7 @@ static void *blit_compute_shader(struct pipe_context *ctx)
}
void util_compute_blit(struct pipe_context *ctx, struct pipe_blit_info *blit_info,
void **compute_state, bool half_texel_offset)
void **compute_state)
{
if (blit_info->src.box.width == 0 || blit_info->src.box.height == 0 ||
blit_info->dst.box.width == 0 || blit_info->dst.box.height == 0)
@ -90,10 +93,9 @@ void util_compute_blit(struct pipe_context *ctx, struct pipe_blit_info *blit_inf
float x_scale = blit_info->src.box.width / (float)blit_info->dst.box.width;
float y_scale = blit_info->src.box.height / (float)blit_info->dst.box.height;
float z_scale = blit_info->src.box.depth / (float)blit_info->dst.box.depth;
float offset = half_texel_offset ? 0.5 : 0.0;
unsigned data[] = {u_bitcast_f2u((blit_info->src.box.x + offset) / (float)src->width0),
u_bitcast_f2u((blit_info->src.box.y + offset) / (float)src->height0),
unsigned data[] = {u_bitcast_f2u(blit_info->src.box.x / (float)src->width0),
u_bitcast_f2u(blit_info->src.box.y / (float)src->height0),
u_bitcast_f2u(blit_info->src.box.z),
u_bitcast_f2u(0),
u_bitcast_f2u(x_scale / src->width0),
@ -103,6 +105,10 @@ void util_compute_blit(struct pipe_context *ctx, struct pipe_blit_info *blit_inf
blit_info->dst.box.x,
blit_info->dst.box.y,
blit_info->dst.box.z,
0,
u_bitcast_f2u((blit_info->src.box.width - 0.5) / (float)src->width0),
u_bitcast_f2u((blit_info->src.box.height - 0.5) / (float)src->height0),
0,
0};
struct pipe_constant_buffer cb = {0};

2
src/gallium/auxiliary/util/u_compute.h
View file

@ -36,7 +36,7 @@ extern "C" {
#endif
void util_compute_blit(struct pipe_context *ctx, struct pipe_blit_info *blit_info,
void **compute_state, bool half_texel_offset);
void **compute_state);
#ifdef __cplusplus
}

2
src/gallium/frontends/va/postproc.c
View file

@ -354,7 +354,7 @@ static VAStatus vlVaPostProcBlit(vlVaDriver *drv, vlVaContext *context,
if (drv->pipe->screen->get_param(drv->pipe->screen,
PIPE_CAP_PREFER_COMPUTE_FOR_MULTIMEDIA))
util_compute_blit(drv->pipe, &blit, &context->blit_cs, !drv->compositor.deinterlace);
util_compute_blit(drv->pipe, &blit, &context->blit_cs);
else
drv->pipe->blit(drv->pipe, &blit);
}