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frontends/va: Enable shader-based alpha blending

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Signed-off-by: Thong Thai <thong.thai@amd.com>
Reviewed-by: David Rosca <david.rosca@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41090>
This commit is contained in:
Thong Thai 2026-05-07 15:13:11 +00:00 • committed by Marge Bot
parent c96c7e77f7
commit 06c84cc773
1 changed files with 14 additions and 5 deletions
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19
src/gallium/frontends/va/postproc.c
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@ -126,8 +126,10 @@ vlVaQueryVideoProcPipelineCaps(VADriverContextP ctx, VAContextID context,
PIPE_VIDEO_CAP_VPP_BLEND_MODES);
pipeline_cap->blend_flags = 0;
if (pipe_blend_modes & PIPE_VIDEO_VPP_BLEND_MODE_GLOBAL_ALPHA)
if (!media_only || pipe_blend_modes & PIPE_VIDEO_VPP_BLEND_MODE_GLOBAL_ALPHA)
pipeline_cap->blend_flags |= VA_BLEND_GLOBAL_ALPHA;
if (!media_only || pipe_blend_modes & PIPE_VIDEO_VPP_BLEND_MODE_PREMULTIPLIED_ALPHA)
pipeline_cap->blend_flags |= VA_BLEND_PREMULTIPLIED_ALPHA;
vlVaDriver *drv = VL_VA_DRIVER(ctx);
@ -379,9 +381,14 @@ vlVaPostProcCompositor(vlVaDriver *drv,
mirror = VL_COMPOSITOR_MIRROR_NONE;
vl_compositor_clear_layers(&drv->cstate);
vl_compositor_set_layer_rotation(&drv->cstate, 0, rotation);
vl_compositor_set_layer_mirror(&drv->cstate, 0, mirror);
drv->cstate.layers[0].blend_enabled = param->blend.enabled;
drv->cstate.layers[0].blend_mode = param->blend.mode;
drv->cstate.layers[0].blend_alpha = param->blend.global_alpha;
if (dst_yuv) {
if (src_yuv) {
/* YUV -> YUV */
@ -647,10 +654,12 @@ vlVaHandleVAProcPipelineParameterBufferType(vlVaDriver *drv, vlVaContext *contex
}
if (param->blend_state) {
if (param->blend_state->flags & VA_BLEND_GLOBAL_ALPHA) {
vpp.blend.mode = PIPE_VIDEO_VPP_BLEND_MODE_GLOBAL_ALPHA;
vpp.blend.global_alpha = param->blend_state->global_alpha;
}
vpp.blend.enabled = true;
vpp.blend.global_alpha = param->blend_state->global_alpha;
if (param->blend_state->flags & VA_BLEND_GLOBAL_ALPHA)
vpp.blend.mode |= PIPE_VIDEO_VPP_BLEND_MODE_GLOBAL_ALPHA;
if (param->blend_state->flags & VA_BLEND_PREMULTIPLIED_ALPHA)
vpp.blend.mode |= PIPE_VIDEO_VPP_BLEND_MODE_PREMULTIPLIED_ALPHA;
}
/* Output background color */