intel/isl: Add an isl_swizzle structure and use it for isl_view swizzles

This should be more compact than the enum isl_channel_select[4] that we
were using before.  It's also very convenient because we already had such a
structure in the Vulkan driver we just needed to pull it over.

Signed-off-by: Jason Ekstrand <jason@jlekstrand.net>
Reviewed-by: Topi Pohjolainen <topi.pohjolainen@intel.com>

7 files changed, 40 insertions, 41 deletions

diff --git a/src/intel/blorp/blorp.c b/src/intel/blorp/blorp.c
index 8dfebbcb2a..7b3b097897 100644
--- a/src/intel/blorp/blorp.c
+++ b/src/intel/blorp/blorp.c
@@ -111,12 +111,7 @@ brw_blorp_surface_info_init(struct blorp_context *blorp,
       .format = format,
       .base_level = level,
       .levels = 1,
-      .channel_select = {
-         ISL_CHANNEL_SELECT_RED,
-         ISL_CHANNEL_SELECT_GREEN,
-         ISL_CHANNEL_SELECT_BLUE,
-         ISL_CHANNEL_SELECT_ALPHA,
-      },
+      .swizzle = ISL_SWIZZLE_IDENTITY,
    };
 
    info->view.array_len = MAX2(info->surf.logical_level0_px.depth,
diff --git a/src/intel/blorp/blorp_blit.c b/src/intel/blorp/blorp_blit.c
index 2b6adc39f0..0531bfb0d2 100644
--- a/src/intel/blorp/blorp_blit.c
+++ b/src/intel/blorp/blorp_blit.c
@@ -1637,10 +1637,12 @@ blorp_blit(struct blorp_batch *batch,
 
    brw_blorp_get_blit_kernel(batch->blorp, &params, &wm_prog_key);
 
-   for (unsigned i = 0; i < 4; i++) {
-      params.src.view.channel_select[i] =
-         swizzle_to_scs(GET_SWZ(src_swizzle, i));
-   }
+   params.src.view.swizzle = (struct isl_swizzle) {
+      .r = swizzle_to_scs(GET_SWZ(src_swizzle, 0)),
+      .g = swizzle_to_scs(GET_SWZ(src_swizzle, 1)),
+      .b = swizzle_to_scs(GET_SWZ(src_swizzle, 2)),
+      .a = swizzle_to_scs(GET_SWZ(src_swizzle, 3)),
+   };
 
    batch->blorp->exec(batch, &params);
 }
diff --git a/src/intel/isl/isl.h b/src/intel/isl/isl.h
index e01624bfae..d8260b2a0c 100644
--- a/src/intel/isl/isl.h
+++ b/src/intel/isl/isl.h
@@ -854,6 +854,22 @@ struct isl_surf {
    isl_surf_usage_flags_t usage;
 };
 
+struct isl_swizzle {
+   enum isl_channel_select r:4;
+   enum isl_channel_select g:4;
+   enum isl_channel_select b:4;
+   enum isl_channel_select a:4;
+};
+
+#define ISL_SWIZZLE(R, G, B, A) ((struct isl_swizzle) { \
+      .r = ISL_CHANNEL_SELECT_##R, \
+      .g = ISL_CHANNEL_SELECT_##G, \
+      .b = ISL_CHANNEL_SELECT_##B, \
+      .a = ISL_CHANNEL_SELECT_##A, \
+   })
+
+#define ISL_SWIZZLE_IDENTITY ISL_SWIZZLE(RED, GREEN, BLUE, ALPHA)
+
 struct isl_view {
    /**
     * Indicates the usage of the particular view
@@ -889,7 +905,7 @@ struct isl_view {
    uint32_t base_array_layer;
    uint32_t array_len;
 
-   enum isl_channel_select channel_select[4];
+   struct isl_swizzle swizzle;
 };
 
 union isl_color_value {
diff --git a/src/intel/isl/isl_surface_state.c b/src/intel/isl/isl_surface_state.c
index 5c5386e297..5845175de3 100644
--- a/src/intel/isl/isl_surface_state.c
+++ b/src/intel/isl/isl_surface_state.c
@@ -411,10 +411,10 @@ isl_genX(surf_fill_state_s)(const struct isl_device *dev, void *state,
 #endif
 
 #if (GEN_GEN >= 8 || GEN_IS_HASWELL)
-   s.ShaderChannelSelectRed = info->view->channel_select[0];
-   s.ShaderChannelSelectGreen = info->view->channel_select[1];
-   s.ShaderChannelSelectBlue = info->view->channel_select[2];
-   s.ShaderChannelSelectAlpha = info->view->channel_select[3];
+   s.ShaderChannelSelectRed = info->view->swizzle.r;
+   s.ShaderChannelSelectGreen = info->view->swizzle.g;
+   s.ShaderChannelSelectBlue = info->view->swizzle.b;
+   s.ShaderChannelSelectAlpha = info->view->swizzle.a;
 #endif
 
    s.SurfaceBaseAddress = info->address;
diff --git a/src/intel/vulkan/anv_formats.c b/src/intel/vulkan/anv_formats.c
index a746cd3545..ff59f479fd 100644
--- a/src/intel/vulkan/anv_formats.c
+++ b/src/intel/vulkan/anv_formats.c
@@ -24,13 +24,6 @@
 #include "anv_private.h"
 #include "vk_format_info.h"
 
-#define ISL_SWIZZLE(r, g, b, a) { \
-   ISL_CHANNEL_SELECT_##r, \
-   ISL_CHANNEL_SELECT_##g, \
-   ISL_CHANNEL_SELECT_##b, \
-   ISL_CHANNEL_SELECT_##a, \
-}
-
 #define RGBA ISL_SWIZZLE(RED, GREEN, BLUE, ALPHA)
 #define BGRA ISL_SWIZZLE(BLUE, GREEN, RED, ALPHA)
 #define RGB1 ISL_SWIZZLE(RED, GREEN, BLUE, ONE)
@@ -283,7 +276,7 @@ anv_get_format(const struct gen_device_info *devinfo, VkFormat vk_format,
          format.isl_format = rgbx;
       } else {
          format.isl_format = isl_format_rgb_to_rgba(format.isl_format);
-         format.swizzle = (struct anv_format_swizzle) RGB1;
+         format.swizzle = RGB1;
       }
    }
 
diff --git a/src/intel/vulkan/anv_image.c b/src/intel/vulkan/anv_image.c
index af6b4ca851..63b8c86f5c 100644
--- a/src/intel/vulkan/anv_image.c
+++ b/src/intel/vulkan/anv_image.c
@@ -345,7 +345,7 @@ alloc_surface_state(struct anv_device *device,
 
 static enum isl_channel_select
 remap_swizzle(VkComponentSwizzle swizzle, VkComponentSwizzle component,
-              struct anv_format_swizzle format_swizzle)
+              struct isl_swizzle format_swizzle)
 {
    if (swizzle == VK_COMPONENT_SWIZZLE_IDENTITY)
       swizzle = component;
@@ -414,15 +414,15 @@ anv_image_view_init(struct anv_image_view *iview,
       .levels = anv_get_levelCount(image, range),
       .base_array_layer = range->baseArrayLayer,
       .array_len = anv_get_layerCount(image, range),
-      .channel_select = {
-         remap_swizzle(pCreateInfo->components.r,
-                       VK_COMPONENT_SWIZZLE_R, format.swizzle),
-         remap_swizzle(pCreateInfo->components.g,
-                       VK_COMPONENT_SWIZZLE_G, format.swizzle),
-         remap_swizzle(pCreateInfo->components.b,
-                       VK_COMPONENT_SWIZZLE_B, format.swizzle),
-         remap_swizzle(pCreateInfo->components.a,
-                       VK_COMPONENT_SWIZZLE_A, format.swizzle),
+      .swizzle = {
+         .r = remap_swizzle(pCreateInfo->components.r,
+                            VK_COMPONENT_SWIZZLE_R, format.swizzle),
+         .g = remap_swizzle(pCreateInfo->components.g,
+                            VK_COMPONENT_SWIZZLE_G, format.swizzle),
+         .b = remap_swizzle(pCreateInfo->components.b,
+                            VK_COMPONENT_SWIZZLE_B, format.swizzle),
+         .a = remap_swizzle(pCreateInfo->components.a,
+                            VK_COMPONENT_SWIZZLE_A, format.swizzle),
       },
    };
 
diff --git a/src/intel/vulkan/anv_private.h b/src/intel/vulkan/anv_private.h
index 99b3acf1a6..f32806ca29 100644
--- a/src/intel/vulkan/anv_private.h
+++ b/src/intel/vulkan/anv_private.h
@@ -1621,16 +1621,9 @@ anv_graphics_pipeline_create(VkDevice device,
                              const VkAllocationCallbacks *alloc,
                              VkPipeline *pPipeline);
 
-struct anv_format_swizzle {
-   enum isl_channel_select r:4;
-   enum isl_channel_select g:4;
-   enum isl_channel_select b:4;
-   enum isl_channel_select a:4;
-};
-
 struct anv_format {
    enum isl_format isl_format:16;
-   struct anv_format_swizzle swizzle;
+   struct isl_swizzle swizzle;
 };
 
 struct anv_format