zink: emulate optional depth-formats

The Vulkan spec says that an implementation has to support one of
VK_FORMAT_X8_D24_UNORM_PACK32 and VK_FORMAT_D32_SFLOAT, as well of
one of VK_FORMAT_D24_UNORM_S8_UINT and VK_FORMAT_D32_SFLOAT_S8_UINT.

So let's keep track which one is supported of earch pair, and emulate
one on top of the other one.

This won't give the exact result for comparisons, or when mapping and
unmapping the resources. But it's better than flat out failing to create
the resource, and we can fix the map/unmap issue later if needed.

Tested-by: Duncan Hopkins <[email protected]>

6 files changed, 42 insertions, 8 deletions

diff --git a/src/gallium/drivers/zink/zink_context.c b/src/gallium/drivers/zink/zink_context.c
index 74f94ee988d..2c253b575e5 100644
--- a/src/gallium/drivers/zink/zink_context.c
+++ b/src/gallium/drivers/zink/zink_context.c
@@ -257,7 +257,7 @@ zink_create_sampler_view(struct pipe_context *pctx, struct pipe_resource *pres,
    ivci.sType = VK_STRUCTURE_TYPE_IMAGE_VIEW_CREATE_INFO;
    ivci.image = res->image;
    ivci.viewType = image_view_type(state->target);
-   ivci.format = zink_get_format(state->format);
+   ivci.format = zink_get_format(screen, state->format);
    ivci.components.r = component_mapping(state->swizzle_r);
    ivci.components.g = component_mapping(state->swizzle_g);
    ivci.components.b = component_mapping(state->swizzle_b);
diff --git a/src/gallium/drivers/zink/zink_resource.c b/src/gallium/drivers/zink/zink_resource.c
index fe4097e9f0c..dccbe827f63 100644
--- a/src/gallium/drivers/zink/zink_resource.c
+++ b/src/gallium/drivers/zink/zink_resource.c
@@ -133,7 +133,7 @@ resource_create(struct pipe_screen *pscreen,
       vkGetBufferMemoryRequirements(screen->dev, res->buffer, &reqs);
       flags |= VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT;
    } else {
-      res->format = zink_get_format(templ->format);
+      res->format = zink_get_format(screen, templ->format);
 
       VkImageCreateInfo ici = {};
       ici.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO;
diff --git a/src/gallium/drivers/zink/zink_screen.c b/src/gallium/drivers/zink/zink_screen.c
index 667f242091c..a75389257af 100644
--- a/src/gallium/drivers/zink/zink_screen.c
+++ b/src/gallium/drivers/zink/zink_screen.c
@@ -569,10 +569,33 @@ static const VkFormat formats[PIPE_FORMAT_COUNT] = {
    [PIPE_FORMAT_BPTC_RGB_UFLOAT] = VK_FORMAT_BC6H_UFLOAT_BLOCK,
 };
 
+static bool
+is_depth_format_supported(struct zink_screen *screen, VkFormat format)
+{
+   VkFormatProperties props;
+   vkGetPhysicalDeviceFormatProperties(screen->pdev, format, &props);
+   return (props.linearTilingFeatures | props.optimalTilingFeatures) &
+          VK_FORMAT_FEATURE_DEPTH_STENCIL_ATTACHMENT_BIT;
+}
+
 VkFormat
-zink_get_format(enum pipe_format format)
+zink_get_format(struct zink_screen *screen, enum pipe_format format)
 {
-   return formats[format];
+   VkFormat ret = formats[format];
+
+   if (ret == VK_FORMAT_X8_D24_UNORM_PACK32 &&
+       !screen->have_X8_D24_UNORM_PACK32) {
+      assert(is_depth_format_supported(screen, VK_FORMAT_D32_SFLOAT));
+      return VK_FORMAT_D32_SFLOAT;
+   }
+
+   if (ret == VK_FORMAT_D24_UNORM_S8_UINT &&
+       !screen->have_D24_UNORM_S8_UINT) {
+      assert(is_depth_format_supported(screen, VK_FORMAT_D32_SFLOAT_S8_UINT));
+      return VK_FORMAT_D32_SFLOAT_S8_UINT;
+   }
+
+   return ret;
 }
 
 static VkSampleCountFlagBits
@@ -605,7 +628,7 @@ zink_is_format_supported(struct pipe_screen *pscreen,
       return screen->props.limits.framebufferNoAttachmentsSampleCounts &
              vk_sample_count_flags(sample_count);
 
-   VkFormat vkformat = formats[format];
+   VkFormat vkformat = zink_get_format(screen, format);
    if (vkformat == VK_FORMAT_UNDEFINED)
       return FALSE;
 
@@ -830,6 +853,11 @@ zink_internal_create_screen(struct sw_winsys *winsys, int fd)
    vkGetPhysicalDeviceFeatures(screen->pdev, &screen->feats);
    vkGetPhysicalDeviceMemoryProperties(screen->pdev, &screen->mem_props);
 
+   screen->have_X8_D24_UNORM_PACK32 = is_depth_format_supported(screen,
+                                         VK_FORMAT_X8_D24_UNORM_PACK32);
+   screen->have_D24_UNORM_S8_UINT = is_depth_format_supported(screen,
+                                         VK_FORMAT_D24_UNORM_S8_UINT);
+
    uint32_t num_extensions = 0;
    if (vkEnumerateDeviceExtensionProperties(screen->pdev, NULL,
        &num_extensions, NULL) == VK_SUCCESS && num_extensions > 0) {
diff --git a/src/gallium/drivers/zink/zink_screen.h b/src/gallium/drivers/zink/zink_screen.h
index 38ade554ccc..0b0ee210abb 100644
--- a/src/gallium/drivers/zink/zink_screen.h
+++ b/src/gallium/drivers/zink/zink_screen.h
@@ -48,8 +48,12 @@ struct zink_screen {
    VkPhysicalDeviceProperties props;
    VkPhysicalDeviceFeatures feats;
    VkPhysicalDeviceMemoryProperties mem_props;
+
    bool have_KHR_maintenance1;
 
+   bool have_X8_D24_UNORM_PACK32;
+   bool have_D24_UNORM_S8_UINT;
+
    uint32_t gfx_queue;
    VkDevice dev;
 
@@ -63,6 +67,6 @@ zink_screen(struct pipe_screen *pipe)
 }
 
 VkFormat
-zink_get_format(enum pipe_format format);
+zink_get_format(struct zink_screen *screen, enum pipe_format format);
 
 #endif
diff --git a/src/gallium/drivers/zink/zink_state.c b/src/gallium/drivers/zink/zink_state.c
index 07da1be2bf8..dba85ef43e8 100644
--- a/src/gallium/drivers/zink/zink_state.c
+++ b/src/gallium/drivers/zink/zink_state.c
@@ -35,6 +35,7 @@ zink_create_vertex_elements_state(struct pipe_context *pctx,
                                   unsigned num_elements,
                                   const struct pipe_vertex_element *elements)
 {
+   struct zink_screen *screen = zink_screen(pctx->screen);
    unsigned int i;
    struct zink_vertex_elements_state *ves = CALLOC_STRUCT(zink_vertex_elements_state);
    if (!ves)
@@ -62,7 +63,8 @@ zink_create_vertex_elements_state(struct pipe_context *pctx,
 
       ves->hw_state.attribs[i].binding = binding;
       ves->hw_state.attribs[i].location = i; // TODO: unsure
-      ves->hw_state.attribs[i].format = zink_get_format(elem->src_format);
+      ves->hw_state.attribs[i].format = zink_get_format(screen,
+                                                        elem->src_format);
       assert(ves->hw_state.attribs[i].format != VK_FORMAT_UNDEFINED);
       ves->hw_state.attribs[i].offset = elem->src_offset;
    }
diff --git a/src/gallium/drivers/zink/zink_surface.c b/src/gallium/drivers/zink/zink_surface.c
index 0b480643b1b..3c1fc4e7216 100644
--- a/src/gallium/drivers/zink/zink_surface.c
+++ b/src/gallium/drivers/zink/zink_surface.c
@@ -93,7 +93,7 @@ zink_create_surface(struct pipe_context *pctx,
       unreachable("unsupported target");
    }
 
-   ivci.format = zink_get_format(templ->format);
+   ivci.format = zink_get_format(screen, templ->format);
 
    // TODO: format swizzles
    ivci.components.r = VK_COMPONENT_SWIZZLE_R;