panvk: remove load_multisampled_pan sysval

This was only used by bi_lower_sample_mask_writes, which now ignores it
in panvk due to panfrost_compile_inputs::single_sample_full_coverage.

Signed-off-by: Benjamin Lee <benjamin.lee@collabora.com>
Reviewed-by: Erik Faye-Lund <erik.faye-lund@collabora.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/32636>

src/panfrost/vulkan/csf/panvk_vX_cmd_draw.c

@@ -230,14 +230,8 @@ prepare_sysvals(struct panvk_cmd_buffer *cmdbuf,
    struct vk_color_blend_state *cb = &cmdbuf->vk.dynamic_graphics_state.cb;
    const struct vk_rasterization_state *rs =
       &cmdbuf->vk.dynamic_graphics_state.rs;
-   struct pan_fb_info *fbinfo = &cmdbuf->state.gfx.render.fb.info;
    const struct panvk_shader *fs = cmdbuf->state.gfx.fs.shader;
 
-   if (gfx_state_dirty(cmdbuf, RENDER_STATE)) {
-      sysvals->fs.multisampled = fbinfo->nr_samples > 1;
-      gfx_state_set_dirty(cmdbuf, PUSH_UNIFORMS);
-   }
-
    uint32_t noperspective_varyings = fs ? fs->info.varyings.noperspective : 0;
    if (sysvals->vs.noperspective_varyings != noperspective_varyings) {
       sysvals->vs.noperspective_varyings = noperspective_varyings;

src/panfrost/vulkan/jm/panvk_vX_cmd_draw.c

@@ -96,7 +96,6 @@ panvk_cmd_prepare_draw_sysvals(struct panvk_cmd_buffer *cmdbuf,
    struct panvk_shader_desc_state *fs_desc_state = &cmdbuf->state.gfx.fs.desc;
    struct panvk_graphics_sysvals *sysvals = &cmdbuf->state.gfx.sysvals;
    struct vk_color_blend_state *cb = &cmdbuf->vk.dynamic_graphics_state.cb;
-   struct pan_fb_info *fbinfo = &cmdbuf->state.gfx.render.fb.info;
 
    unsigned base_vertex = draw->index_size ? draw->vertex_offset : 0;
    uint32_t noperspective_varyings = fs ? fs->info.varyings.noperspective : 0;
@@ -104,14 +103,12 @@ panvk_cmd_prepare_draw_sysvals(struct panvk_cmd_buffer *cmdbuf,
        sysvals->vs.base_vertex != base_vertex ||
        sysvals->vs.base_instance != draw->first_instance ||
        sysvals->layer_id != draw->layer_id ||
-       sysvals->fs.multisampled != (fbinfo->nr_samples > 1) ||
        sysvals->vs.noperspective_varyings != noperspective_varyings) {
       sysvals->vs.first_vertex = draw->offset_start;
       sysvals->vs.base_vertex = base_vertex;
       sysvals->vs.base_instance = draw->first_instance;
       sysvals->vs.noperspective_varyings = noperspective_varyings;
       sysvals->layer_id = draw->layer_id;
-      sysvals->fs.multisampled = fbinfo->nr_samples > 1;
 
       gfx_state_set_dirty(cmdbuf, PUSH_UNIFORMS);
    }

src/panfrost/vulkan/panvk_shader.h

@@ -57,10 +57,6 @@ struct panvk_graphics_sysvals {
       uint32_t noperspective_varyings;
    } vs;
 
-   struct {
-      uint32_t multisampled;
-   } fs;
-
 #if PAN_ARCH <= 7
    /* gl_Layer on Bifrost is a bit of hack. We have to issue one draw per
     * layer, and filter primitives at the VS level.

src/panfrost/vulkan/panvk_vX_shader.c

@@ -116,10 +116,6 @@ panvk_lower_sysvals(nir_builder *b, nir_instr *instr, void *data)
       val = load_sysval_from_push_const(b, SYSVAL(graphics, blend.constants),
                                         bit_size, num_comps);
       break;
-   case nir_intrinsic_load_multisampled_pan:
-      val = load_sysval_from_push_const(b, SYSVAL(graphics, fs.multisampled),
-                                        bit_size, num_comps);
-      break;
    case nir_intrinsic_load_noperspective_varyings_pan:
       /* TODO: use a VS epilog specialized on constant noperspective_varyings
        * with VK_EXT_graphics_pipeline_libraries and VK_EXT_shader_object */