X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;f=source%2Fbackends%2Fvulkan%2Ftexture_backend.cpp;h=dd19c63664b88658fe06917798742bbcbb4fd2f5;hb=7b0a38db12c3d1aacb59520a3f4baa16d9ec0048;hp=f1e8b85bab162e32926db81f78ced507752e5d04;hpb=8ab7589d65c4f8ca799f2a6886d128f4c36ff046;p=libs%2Fgl.git

diff --git a/source/backends/vulkan/texture_backend.cpp b/source/backends/vulkan/texture_backend.cpp
index f1e8b85b..dd19c636 100644
--- a/source/backends/vulkan/texture_backend.cpp
+++ b/source/backends/vulkan/texture_backend.cpp
@@ -56,7 +56,7 @@ void VulkanTexture::allocate()
 	image_info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
 	image_info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
 
-	image_info.usage = VK_IMAGE_USAGE_TRANSFER_DST_BIT | VK_IMAGE_USAGE_SAMPLED_BIT;
+	image_info.usage = VK_IMAGE_USAGE_TRANSFER_SRC_BIT|VK_IMAGE_USAGE_TRANSFER_DST_BIT|VK_IMAGE_USAGE_SAMPLED_BIT;
 	PixelComponents comp = get_components(self.storage_fmt);
 	if(comp==DEPTH_COMPONENT || comp==STENCIL_INDEX)
 		image_info.usage |= VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
@@ -100,9 +100,70 @@ void VulkanTexture::allocate()
 		set_vulkan_object_names();
 }
 
-void VulkanTexture::generate_mipmap()
+void VulkanTexture::stage_pixels(void *staging, const void *data, size_t count)
 {
-	throw logic_error("VulkanTexture::generate_mipmap is unimplemented");
+	const Texture &self = *static_cast<const Texture *>(this);
+
+	if(self.swizzle==RGBA_TO_RGB)
+	{
+		const uint32_t *src = static_cast<const uint32_t *>(data);
+		uint32_t *dst = static_cast<uint32_t *>(staging);
+		size_t i = 0;
+		for(; i+3<count; i+=4)
+		{
+			dst[0] = src[0]|0xFF000000;
+			dst[1] = (src[0]>>24)|(src[1]<<8)|0xFF000000;
+			dst[2] = (src[1]>>16)|(src[2]<<16)|0xFF000000;
+			dst[3] = (src[2]>>8)|0xFF000000;
+			src += 3;
+			dst += 4;
+		}
+
+		if(i<count)
+		{
+			const uint8_t *src_bytes = reinterpret_cast<const uint8_t *>(src);
+			for(; i<count; ++i)
+			{
+				*dst++ = src_bytes[0]|(src_bytes[1]<<8)|(src_bytes[2]<<16)|0xFF000000;
+				src_bytes += 3;
+			}
+		}
+	}
+	else
+	{
+		const char *src = static_cast<const char *>(data);
+		size_t data_size = count*get_pixel_size(self.storage_fmt);
+		copy(src, src+data_size, static_cast<char *>(staging));
+	}
+}
+
+void VulkanTexture::generate_mipmap_levels(unsigned n_levels)
+{
+	TransferQueue &tq = device.get_transfer_queue();
+	for(unsigned i=0; i+1<n_levels; ++i)
+	{
+		tq.prepare_transfer(this, true, 0,
+			[this, n_levels, i](){
+				change_layout((i==0 ? n_levels : 0), i, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, false);
+				change_layout(0, i+1, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL, true);
+			},
+			[this, i](VkCommandBuffer cmd_buf, VkBuffer, size_t){
+				const VulkanFunctions &vk = device.get_functions();
+
+				VkImageBlit region = { };
+				region.srcSubresource.aspectMask = get_vulkan_aspect(get_components(static_cast<const Texture *>(this)->storage_fmt));
+				region.srcSubresource.mipLevel = i;
+				region.srcSubresource.baseArrayLayer = 0;
+				region.srcSubresource.layerCount = 1;
+				region.dstSubresource = region.srcSubresource;
+				++region.dstSubresource.mipLevel;
+
+				fill_mipmap_blit(i, &region);
+
+				vk.CmdBlitImage(cmd_buf, handle, VK_IMAGE_LAYOUT_TRANSFER_SRC_OPTIMAL, handle, VK_IMAGE_LAYOUT_TRANSFER_DST_OPTIMAL,
+					1, &region, VK_FILTER_LINEAR);
+			});
+	}
 }
 
 void VulkanTexture::change_layout(unsigned n_levels, int level, unsigned layout, bool discard) const