render/vulkan: add vulkan_get_pipeline_layout()

Will make it easier to add more pipeline layouts for other YCbCr
formats.

include/render/vulkan.h

@@ -297,6 +297,9 @@ struct wlr_vk_format_props *vulkan_format_props_from_drm(
 	struct wlr_vk_device *dev, uint32_t drm_format);
 struct wlr_vk_renderer *vulkan_get_renderer(struct wlr_renderer *r);
 
+struct wlr_vk_pipeline_layout *vulkan_get_pipeline_layout(struct wlr_vk_renderer *renderer,
+	const struct wlr_vk_format *format);
+
 // State (e.g. image texture) associated with a surface.
 struct wlr_vk_texture {
 	struct wlr_texture wlr_texture;
@@ -306,6 +309,7 @@ struct wlr_vk_texture {
 	VkImage image;
 	VkImageView image_view;
 	const struct wlr_vk_format *format;
+	struct wlr_vk_pipeline_layout *pipeline_layout;
 	VkDescriptorSet ds;
 	struct wlr_vk_descriptor_pool *ds_pool;
 	struct wlr_vk_command_buffer *last_used_cb; // to track when it can be destroyed

render/vulkan/renderer.c

@@ -17,6 +17,7 @@
 #include <wlr/render/vulkan.h>
 #include <wlr/backend/interface.h>
 #include <wlr/types/wlr_linux_dmabuf_v1.h>
+#include <xf86drm.h>
 
 #include "render/dmabuf.h"
 #include "render/pixel_format.h"
@@ -1405,11 +1406,11 @@ static bool vulkan_render_subtexture_with_matrix(struct wlr_renderer *wlr_render
 		wl_list_insert(&renderer->foreign_textures, &texture->foreign_link);
 	}
 
-	VkPipelineLayout pipe_layout = renderer->default_pipeline_layout.vk;
+	VkPipelineLayout pipe_layout = texture->pipeline_layout->vk;
+
 	VkPipeline pipe;
 	// SRGB formats already have the transfer function applied
 	if (texture->format->drm == DRM_FORMAT_NV12) {
-		pipe_layout = renderer->nv12_pipeline_layout.vk;
 		pipe = renderer->current_render_buffer->render_setup->tex_nv12_pipe;
 	} else if (texture->format->is_srgb) {
 		pipe = renderer->current_render_buffer->render_setup->tex_identity_pipe;
@@ -2841,6 +2842,21 @@ struct wlr_renderer *wlr_vk_renderer_create_with_drm_fd(int drm_fd) {
 	return vulkan_renderer_create_for_device(dev);
 }
 
+struct wlr_vk_pipeline_layout *vulkan_get_pipeline_layout(struct wlr_vk_renderer *renderer,
+		const struct wlr_vk_format *format) {
+	if (!format->is_ycbcr) {
+		return &renderer->default_pipeline_layout;
+	}
+	if (format->drm == DRM_FORMAT_NV12 && renderer->dev->sampler_ycbcr_conversion) {
+		return &renderer->nv12_pipeline_layout;
+	}
+	char *name = drmGetFormatName(format->drm);
+	wlr_log(WLR_ERROR, "No pipeline layout found for format %s (0x%08"PRIX32")",
+		name, format->drm);
+	free(name);
+	return NULL;
+}
+
 VkInstance wlr_vk_renderer_get_instance(struct wlr_renderer *renderer) {
 	struct wlr_vk_renderer *vk_renderer = vulkan_get_renderer(renderer);
 	return vk_renderer->dev->instance->instance;

render/vulkan/texture.c

@@ -282,6 +282,7 @@ static struct wlr_texture *vulkan_texture_from_pixels(
 	}
 
 	texture->format = &fmt->format;
+	texture->pipeline_layout = &renderer->default_pipeline_layout;
 
 	VkImageCreateInfo img_info = {
 		.sType = VK_STRUCTURE_TYPE_IMAGE_CREATE_INFO,
@@ -662,6 +663,12 @@ static struct wlr_vk_texture *vulkan_texture_from_dmabuf(
 	}
 
 	texture->format = &fmt->format;
+
+	texture->pipeline_layout = vulkan_get_pipeline_layout(renderer, texture->format);
+	if (texture->pipeline_layout == NULL) {
+		goto error;
+	}
+
 	texture->image = vulkan_import_dmabuf(renderer, attribs,
 		texture->memories, &texture->mem_count, false);
 	if (!texture->image) {
@@ -695,13 +702,12 @@ static struct wlr_vk_texture *vulkan_texture_from_dmabuf(
 		.image = texture->image,
 	};
 
-	VkDescriptorSetLayout ds_layout = renderer->default_pipeline_layout.ds;
 	VkSamplerYcbcrConversionInfo ycbcr_conversion_info;
 	if (fmt->format.is_ycbcr) {
-		ds_layout = renderer->nv12_pipeline_layout.ds;
+		assert(texture->pipeline_layout->ycbcr.conversion != VK_NULL_HANDLE);
 		ycbcr_conversion_info = (VkSamplerYcbcrConversionInfo){
 			.sType = VK_STRUCTURE_TYPE_SAMPLER_YCBCR_CONVERSION_INFO,
-			.conversion = renderer->nv12_pipeline_layout.ycbcr.conversion,
+			.conversion = texture->pipeline_layout->ycbcr.conversion,
 		};
 		view_info.pNext = &ycbcr_conversion_info;
 	}
@@ -712,7 +718,7 @@ static struct wlr_vk_texture *vulkan_texture_from_dmabuf(
 		goto error;
 	}
 
-	texture->ds_pool = vulkan_alloc_texture_ds(renderer, ds_layout, &texture->ds);
+	texture->ds_pool = vulkan_alloc_texture_ds(renderer, texture->pipeline_layout->ds, &texture->ds);
 	if (!texture->ds_pool) {
 		wlr_log(WLR_ERROR, "failed to allocate descriptor");
 		goto error;