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add msaa support for depth textures (#38) 

Depth textures handle MSAA differently than color textures do, because there's no need for a resolve texture. This means the root VulkanTexture can have the sample count instead of needing an additional `msaaTex`.

This changeset also fixes a bug where the depth buffer wasn't getting cleared if there were MSAA color attachments.

Co-authored-by: Caleb Cornett <caleb.cornett@outlook.com>
Reviewed-on: MoonsideGames/Refresh#38
Co-authored-by: TheSpydog <thespydog@noreply.example.org>
Co-committed-by: TheSpydog <thespydog@noreply.example.org>
remotes/1695145649051507776/main
TheSpydog 2023-01-31 20:30:05 +00:00 committed by cosmonaut
parent 6439516835
commit 1f2aaeed9f
1 changed files with 24 additions and 17 deletions
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39
src/Refresh_Driver_Vulkan.c
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@ -5657,12 +5657,11 @@ static VkRenderPass VULKAN_INTERNAL_CreateRenderPass(
{
texture = (VulkanTexture*) depthStencilAttachmentInfo->texture;
/* FIXME: MSAA? */
attachmentDescriptions[attachmentDescriptionCount].flags = 0;
attachmentDescriptions[attachmentDescriptionCount].format = texture->format;
attachmentDescriptions[attachmentDescriptionCount].samples =
VK_SAMPLE_COUNT_1_BIT;
attachmentDescriptions[attachmentDescriptionCount].samples = RefreshToVK_SampleCount[
texture->sampleCount
];
attachmentDescriptions[attachmentDescriptionCount].loadOp = RefreshToVK_LoadOp[
depthStencilAttachmentInfo->loadOp
];
@ -5844,8 +5843,9 @@ static VkRenderPass VULKAN_INTERNAL_CreateTransientRenderPass(
renderer,
attachmentInfo.depthStencilFormat
);
attachmentDescriptions[attachmentDescriptionCount].samples =
VK_SAMPLE_COUNT_1_BIT; /* FIXME: do these take multisamples? */
attachmentDescriptions[attachmentDescriptionCount].samples = RefreshToVK_SampleCount[
sampleCount
];
attachmentDescriptions[attachmentDescriptionCount].loadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
attachmentDescriptions[attachmentDescriptionCount].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachmentDescriptions[attachmentDescriptionCount].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
@ -6547,10 +6547,11 @@ static Refresh_Texture* VULKAN_CreateTexture(
VK_IMAGE_USAGE_TRANSFER_SRC_BIT
);
VkImageAspectFlags imageAspectFlags;
uint8_t isDepthFormat = IsRefreshDepthFormat(textureCreateInfo->format);
VkFormat format;
VulkanTexture *result;
if (IsRefreshDepthFormat(textureCreateInfo->format))
if (isDepthFormat)
{
format = RefreshToVK_DepthFormat(renderer, textureCreateInfo->format);
}
@ -6579,7 +6580,7 @@ static Refresh_Texture* VULKAN_CreateTexture(
imageUsageFlags |= VK_IMAGE_USAGE_STORAGE_BIT;
}
if (IsDepthFormat(format))
if (isDepthFormat)
{
imageAspectFlags = VK_IMAGE_ASPECT_DEPTH_BIT;
@ -6600,14 +6601,18 @@ static Refresh_Texture* VULKAN_CreateTexture(
textureCreateInfo->depth,
textureCreateInfo->isCube,
textureCreateInfo->levelCount,
isDepthFormat ?
textureCreateInfo->sampleCount : /* depth textures do not have a separate msaaTex */
REFRESH_SAMPLECOUNT_1,
format,
imageAspectFlags,
imageUsageFlags
);
/* create the MSAA texture */
if (result != NULL && textureCreateInfo->sampleCount > REFRESH_SAMPLECOUNT_1)
/* create the MSAA texture for color attachments, if needed */
if ( result != NULL &&
!isDepthFormat &&
textureCreateInfo->sampleCount > REFRESH_SAMPLECOUNT_1 )
{
result->msaaTex = VULKAN_INTERNAL_CreateTexture(
renderer,
@ -8296,6 +8301,7 @@ static void VULKAN_BeginRenderPass(
VkClearValue *clearValues;
uint32_t clearCount = colorAttachmentCount;
uint32_t multisampleAttachmentCount = 0;
uint32_t totalColorAttachmentCount = 0;
uint32_t i;
VkImageAspectFlags depthAspectFlags;
Refresh_Viewport defaultViewport;
@ -8395,9 +8401,8 @@ static void VULKAN_BeginRenderPass(
texture = (VulkanTexture*) depthStencilAttachmentInfo->texture;
depthAspectFlags = VK_IMAGE_ASPECT_DEPTH_BIT;
if (IsStencilFormat(
texture->format
)) {
if (IsStencilFormat(texture->format))
{
depthAspectFlags |= VK_IMAGE_ASPECT_STENCIL_BIT;
}
@ -8424,7 +8429,9 @@ static void VULKAN_BeginRenderPass(
clearValues = SDL_stack_alloc(VkClearValue, clearCount);
for (i = 0; i < colorAttachmentCount + multisampleAttachmentCount; i += 1)
totalColorAttachmentCount = colorAttachmentCount + multisampleAttachmentCount;
for (i = 0; i < totalColorAttachmentCount; i += 1)
{
clearValues[i].color.float32[0] = colorAttachmentInfos[i].clearColor.x;
clearValues[i].color.float32[1] = colorAttachmentInfos[i].clearColor.y;
@ -8444,9 +8451,9 @@ static void VULKAN_BeginRenderPass(
if (depthStencilAttachmentInfo != NULL)
{
clearValues[colorAttachmentCount].depthStencil.depth =
clearValues[totalColorAttachmentCount].depthStencil.depth =
depthStencilAttachmentInfo->depthStencilClearValue.depth;
clearValues[colorAttachmentCount].depthStencil.stencil =
clearValues[totalColorAttachmentCount].depthStencil.stencil =
depthStencilAttachmentInfo->depthStencilClearValue.stencil;
}