v3d: Split the creating of TEXTURE_SHADER_STATE into a helper function

This extracts the part of v3d_create_sampler_view that creates and fills
in the buffer for the TEXTURE_SHADER_STATE record into a helper
function. This will be used in a later patch to update the record when
the information changes.

v2: Also put the part that creates the buffer into the helper function
    so that it won’t override the contents of an inflight buffer.

Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/6914>

4 files changed, 103 insertions, 75 deletions

diff --git a/src/gallium/drivers/v3d/v3d_context.c b/src/gallium/drivers/v3d/v3d_context.c
index 2b39b74a272..8924d0f0c30 100644
--- a/src/gallium/drivers/v3d/v3d_context.c
+++ b/src/gallium/drivers/v3d/v3d_context.c
@@ -216,6 +216,16 @@ v3d_flag_dirty_sampler_state(struct v3d_context *v3d,
         }
 }
 
+void
+v3d_create_texture_shader_state_bo(struct v3d_context *v3d,
+                                   struct v3d_sampler_view *so)
+{
+        if (v3d->screen->devinfo.ver >= 41)
+                v3d41_create_texture_shader_state_bo(v3d, so);
+        else
+                v3d33_create_texture_shader_state_bo(v3d, so);
+}
+
 static void
 v3d_context_destroy(struct pipe_context *pctx)
 {
diff --git a/src/gallium/drivers/v3d/v3d_context.h b/src/gallium/drivers/v3d/v3d_context.h
index baf58d924ea..05b9ed8fc1e 100644
--- a/src/gallium/drivers/v3d/v3d_context.h
+++ b/src/gallium/drivers/v3d/v3d_context.h
@@ -706,6 +706,9 @@ float v3d_get_real_line_width(struct v3d_context *v3d);
 void v3d_flag_dirty_sampler_state(struct v3d_context *v3d,
                                   enum pipe_shader_type shader);
 
+void v3d_create_texture_shader_state_bo(struct v3d_context *v3d,
+                                        struct v3d_sampler_view *so);
+
 #ifdef v3dX
 #  include "v3dx_context.h"
 #else
diff --git a/src/gallium/drivers/v3d/v3dx_context.h b/src/gallium/drivers/v3d/v3dx_context.h
index 72441e85a20..e6b13fb35dc 100644
--- a/src/gallium/drivers/v3d/v3dx_context.h
+++ b/src/gallium/drivers/v3d/v3dx_context.h
@@ -33,6 +33,8 @@ void v3dX(emit_state)(struct pipe_context *pctx);
 void v3dX(emit_rcl)(struct v3d_job *job);
 void v3dX(draw_init)(struct pipe_context *pctx);
 void v3dX(state_init)(struct pipe_context *pctx);
+void v3dX(create_texture_shader_state_bo)(struct v3d_context *v3d,
+                                          struct v3d_sampler_view *so);
 
 void v3dX(bcl_epilogue)(struct v3d_context *v3d, struct v3d_job *job);
 
diff --git a/src/gallium/drivers/v3d/v3dx_state.c b/src/gallium/drivers/v3d/v3dx_state.c
index ee4f7d8ce59..f8b0a01b72c 100644
--- a/src/gallium/drivers/v3d/v3dx_state.c
+++ b/src/gallium/drivers/v3d/v3dx_state.c
@@ -894,6 +894,93 @@ v3d_setup_texture_shader_state(struct V3DX(TEXTURE_SHADER_STATE) *tex,
 #endif /* V3D_VERSION >= 40 */
 }
 
+void
+v3dX(create_texture_shader_state_bo)(struct v3d_context *v3d,
+                                     struct v3d_sampler_view *so)
+{
+        struct pipe_resource *prsc = so->texture;
+        const struct pipe_sampler_view *cso = &so->base;
+        struct v3d_screen *screen = v3d->screen;
+
+        void *map;
+
+#if V3D_VERSION >= 40
+        v3d_bo_unreference(&so->bo);
+        so->bo = v3d_bo_alloc(v3d->screen,
+                              cl_packet_length(TEXTURE_SHADER_STATE), "sampler");
+        map = v3d_bo_map(so->bo);
+#else /* V3D_VERSION < 40 */
+        STATIC_ASSERT(sizeof(so->texture_shader_state) >=
+                      cl_packet_length(TEXTURE_SHADER_STATE));
+        map = &so->texture_shader_state;
+#endif
+
+        v3dx_pack(map, TEXTURE_SHADER_STATE, tex) {
+                v3d_setup_texture_shader_state(&tex, prsc,
+                                               cso->u.tex.first_level,
+                                               cso->u.tex.last_level,
+                                               cso->u.tex.first_layer,
+                                               cso->u.tex.last_layer);
+
+                tex.srgb = util_format_is_srgb(cso->format);
+
+#if V3D_VERSION >= 40
+                tex.swizzle_r = translate_swizzle(so->swizzle[0]);
+                tex.swizzle_g = translate_swizzle(so->swizzle[1]);
+                tex.swizzle_b = translate_swizzle(so->swizzle[2]);
+                tex.swizzle_a = translate_swizzle(so->swizzle[3]);
+#endif
+
+                if (prsc->nr_samples > 1 && V3D_VERSION < 40) {
+                        /* Using texture views to reinterpret formats on our
+                         * MSAA textures won't work, because we don't lay out
+                         * the bits in memory as it's expected -- for example,
+                         * RGBA8 and RGB10_A2 are compatible in the
+                         * ARB_texture_view spec, but in HW we lay them out as
+                         * 32bpp RGBA8 and 64bpp RGBA16F.  Just assert for now
+                         * to catch failures.
+                         *
+                         * We explicitly allow remapping S8Z24 to RGBA8888 for
+                         * v3d_blit.c's stencil blits.
+                         */
+                        assert((util_format_linear(cso->format) ==
+                                util_format_linear(prsc->format)) ||
+                               (prsc->format == PIPE_FORMAT_S8_UINT_Z24_UNORM &&
+                                cso->format == PIPE_FORMAT_R8G8B8A8_UNORM));
+                        uint32_t output_image_format =
+                                v3d_get_rt_format(&screen->devinfo, cso->format);
+                        uint32_t internal_type;
+                        uint32_t internal_bpp;
+                        v3d_get_internal_type_bpp_for_output_format(&screen->devinfo,
+                                                                    output_image_format,
+                                                                    &internal_type,
+                                                                    &internal_bpp);
+
+                        switch (internal_type) {
+                        case V3D_INTERNAL_TYPE_8:
+                                tex.texture_type = TEXTURE_DATA_FORMAT_RGBA8;
+                                break;
+                        case V3D_INTERNAL_TYPE_16F:
+                                tex.texture_type = TEXTURE_DATA_FORMAT_RGBA16F;
+                                break;
+                        default:
+                                unreachable("Bad MSAA texture type");
+                        }
+
+                        /* sRGB was stored in the tile buffer as linear and
+                         * would have been encoded to sRGB on resolved tile
+                         * buffer store.  Note that this means we would need
+                         * shader code if we wanted to read an MSAA sRGB
+                         * texture without sRGB decode.
+                         */
+                        tex.srgb = false;
+                } else {
+                        tex.texture_type = v3d_get_tex_format(&screen->devinfo,
+                                                              cso->format);
+                }
+        };
+}
+
 static struct pipe_sampler_view *
 v3d_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *prsc,
                         const struct pipe_sampler_view *cso)
@@ -1045,81 +1132,7 @@ v3d_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *prsc,
                 pipe_resource_reference(&so->texture, prsc);
         }
 
-        void *map;
-#if V3D_VERSION >= 40
-        so->bo = v3d_bo_alloc(v3d->screen,
-                              cl_packet_length(TEXTURE_SHADER_STATE), "sampler");
-        map = v3d_bo_map(so->bo);
-#else /* V3D_VERSION < 40 */
-        STATIC_ASSERT(sizeof(so->texture_shader_state) >=
-                      cl_packet_length(TEXTURE_SHADER_STATE));
-        map = &so->texture_shader_state;
-#endif
-
-        v3dx_pack(map, TEXTURE_SHADER_STATE, tex) {
-                v3d_setup_texture_shader_state(&tex, prsc,
-                                               cso->u.tex.first_level,
-                                               cso->u.tex.last_level,
-                                               cso->u.tex.first_layer,
-                                               cso->u.tex.last_layer);
-
-                tex.srgb = util_format_is_srgb(cso->format);
-
-#if V3D_VERSION >= 40
-                tex.swizzle_r = translate_swizzle(so->swizzle[0]);
-                tex.swizzle_g = translate_swizzle(so->swizzle[1]);
-                tex.swizzle_b = translate_swizzle(so->swizzle[2]);
-                tex.swizzle_a = translate_swizzle(so->swizzle[3]);
-#endif
-
-                if (prsc->nr_samples > 1 && V3D_VERSION < 40) {
-                        /* Using texture views to reinterpret formats on our
-                         * MSAA textures won't work, because we don't lay out
-                         * the bits in memory as it's expected -- for example,
-                         * RGBA8 and RGB10_A2 are compatible in the
-                         * ARB_texture_view spec, but in HW we lay them out as
-                         * 32bpp RGBA8 and 64bpp RGBA16F.  Just assert for now
-                         * to catch failures.
-                         *
-                         * We explicitly allow remapping S8Z24 to RGBA8888 for
-                         * v3d_blit.c's stencil blits.
-                         */
-                        assert((util_format_linear(cso->format) ==
-                                util_format_linear(prsc->format)) ||
-                               (prsc->format == PIPE_FORMAT_S8_UINT_Z24_UNORM &&
-                                cso->format == PIPE_FORMAT_R8G8B8A8_UNORM));
-                        uint32_t output_image_format =
-                                v3d_get_rt_format(&screen->devinfo, cso->format);
-                        uint32_t internal_type;
-                        uint32_t internal_bpp;
-                        v3d_get_internal_type_bpp_for_output_format(&screen->devinfo,
-                                                                    output_image_format,
-                                                                    &internal_type,
-                                                                    &internal_bpp);
-
-                        switch (internal_type) {
-                        case V3D_INTERNAL_TYPE_8:
-                                tex.texture_type = TEXTURE_DATA_FORMAT_RGBA8;
-                                break;
-                        case V3D_INTERNAL_TYPE_16F:
-                                tex.texture_type = TEXTURE_DATA_FORMAT_RGBA16F;
-                                break;
-                        default:
-                                unreachable("Bad MSAA texture type");
-                        }
-
-                        /* sRGB was stored in the tile buffer as linear and
-                         * would have been encoded to sRGB on resolved tile
-                         * buffer store.  Note that this means we would need
-                         * shader code if we wanted to read an MSAA sRGB
-                         * texture without sRGB decode.
-                         */
-                        tex.srgb = false;
-                } else {
-                        tex.texture_type = v3d_get_tex_format(&screen->devinfo,
-                                                              cso->format);
-                }
-        };
+        v3d_create_texture_shader_state_bo(v3d, so);
 
         return &so->base;
 }