Greg Daniel | 48cf268 | 2016-02-22 09:11:32 -0500 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2015 Google Inc. |
| 3 | * |
| 4 | * Use of this source code is governed by a BSD-style license that can be |
| 5 | * found in the LICENSE file. |
| 6 | */ |
| 7 | |
| 8 | #include "GrVkRenderPass.h" |
| 9 | |
| 10 | #include "GrVkFramebuffer.h" |
| 11 | #include "GrVkGpu.h" |
| 12 | #include "GrVkRenderTarget.h" |
| 13 | #include "GrVkUtil.h" |
| 14 | |
| 15 | void setup_simple_vk_attachment_description(VkAttachmentDescription* attachment, |
| 16 | VkFormat format, |
| 17 | uint32_t samples, |
| 18 | VkImageLayout layout) { |
| 19 | attachment->flags = 0; |
| 20 | attachment->format = format; |
| 21 | SkAssertResult(GrSampleCountToVkSampleCount(samples, &attachment->samples)); |
| 22 | attachment->loadOp = VK_ATTACHMENT_LOAD_OP_LOAD; |
| 23 | attachment->storeOp = VK_ATTACHMENT_STORE_OP_STORE; |
| 24 | attachment->stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD; |
| 25 | attachment->storeOp = VK_ATTACHMENT_STORE_OP_STORE; |
| 26 | attachment->initialLayout = layout; |
| 27 | attachment->finalLayout = layout; |
| 28 | } |
| 29 | |
| 30 | void GrVkRenderPass::initSimple(const GrVkGpu* gpu, const GrVkRenderTarget& target) { |
| 31 | // Get attachment information from render target. This includes which attachments the render |
| 32 | // target has (color, resolve, stencil) and the attachments format and sample count. |
| 33 | target.getAttachmentsDescriptor(&fAttachmentsDescriptor, &fAttachmentFlags); |
| 34 | |
| 35 | uint32_t numAttachments = fAttachmentsDescriptor.fAttachmentCount; |
| 36 | // Attachment descriptions to be set on the render pass |
| 37 | SkTArray<VkAttachmentDescription> attachments(numAttachments); |
| 38 | attachments.reset(numAttachments); |
| 39 | memset(attachments.begin(), 0, numAttachments*sizeof(VkAttachmentDescription)); |
| 40 | |
| 41 | // Refs to attachments on the render pass (as described by teh VkAttachmentDescription above), |
| 42 | // that are used by the subpass. |
| 43 | VkAttachmentReference colorRef; |
| 44 | VkAttachmentReference resolveRef; |
| 45 | VkAttachmentReference stencilRef; |
| 46 | uint32_t currentAttachment = 0; |
| 47 | |
| 48 | // Go through each of the attachment types (color, resolve, stencil) and set the necessary |
| 49 | // on the various Vk structs. |
| 50 | VkSubpassDescription subpassDesc; |
| 51 | memset(&subpassDesc, 0, sizeof(VkSubpassDescription)); |
| 52 | subpassDesc.flags = 0; |
| 53 | subpassDesc.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS; |
| 54 | subpassDesc.inputAttachmentCount = 0; |
| 55 | subpassDesc.pInputAttachments = nullptr; |
| 56 | if (fAttachmentFlags & kColor_AttachmentFlag) { |
| 57 | // set up color attachment |
| 58 | setup_simple_vk_attachment_description(&attachments[currentAttachment], |
| 59 | fAttachmentsDescriptor.fColor.fFormat, |
| 60 | fAttachmentsDescriptor.fColor.fSamples, |
| 61 | VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL); |
| 62 | // setup subpass use of attachment |
| 63 | colorRef.attachment = currentAttachment++; |
| 64 | colorRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; |
| 65 | subpassDesc.colorAttachmentCount = 1; |
| 66 | } else { |
| 67 | // I don't think there should ever be a time where we don't have a color attachment |
| 68 | SkASSERT(false); |
| 69 | colorRef.attachment = VK_ATTACHMENT_UNUSED; |
| 70 | colorRef.layout = VK_IMAGE_LAYOUT_UNDEFINED; |
| 71 | subpassDesc.colorAttachmentCount = 0; |
| 72 | } |
| 73 | subpassDesc.pColorAttachments = &colorRef; |
| 74 | |
| 75 | if (fAttachmentFlags & kResolve_AttachmentFlag) { |
| 76 | // set up resolve attachment |
| 77 | setup_simple_vk_attachment_description(&attachments[currentAttachment], |
| 78 | fAttachmentsDescriptor.fResolve.fFormat, |
| 79 | fAttachmentsDescriptor.fResolve.fSamples, |
| 80 | VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL); |
| 81 | // setup subpass use of attachment |
| 82 | resolveRef.attachment = currentAttachment++; |
| 83 | // I'm really not sure what the layout should be for the resolve textures. |
| 84 | resolveRef.layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL; |
| 85 | subpassDesc.pResolveAttachments = &resolveRef; |
| 86 | } else { |
| 87 | subpassDesc.pResolveAttachments = nullptr; |
| 88 | } |
| 89 | |
| 90 | if (fAttachmentFlags & kStencil_AttachmentFlag) { |
| 91 | // set up stencil attachment |
| 92 | setup_simple_vk_attachment_description(&attachments[currentAttachment], |
| 93 | fAttachmentsDescriptor.fStencil.fFormat, |
| 94 | fAttachmentsDescriptor.fStencil.fSamples, |
| 95 | VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL); |
| 96 | // setup subpass use of attachment |
| 97 | stencilRef.attachment = currentAttachment++; |
| 98 | stencilRef.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL; |
| 99 | } else { |
| 100 | stencilRef.attachment = VK_ATTACHMENT_UNUSED; |
| 101 | stencilRef.layout = VK_IMAGE_LAYOUT_UNDEFINED; |
| 102 | } |
| 103 | subpassDesc.pDepthStencilAttachment = &stencilRef; |
| 104 | |
| 105 | subpassDesc.preserveAttachmentCount = 0; |
| 106 | subpassDesc.pPreserveAttachments = nullptr; |
| 107 | |
| 108 | SkASSERT(numAttachments == currentAttachment); |
| 109 | |
| 110 | // Create the VkRenderPass compatible with the attachment descriptions above |
| 111 | VkRenderPassCreateInfo createInfo; |
| 112 | memset(&createInfo, 0, sizeof(VkRenderPassCreateInfo)); |
| 113 | createInfo.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO; |
| 114 | createInfo.pNext = nullptr; |
| 115 | createInfo.flags = 0; |
| 116 | createInfo.attachmentCount = numAttachments; |
| 117 | createInfo.pAttachments = attachments.begin(); |
| 118 | createInfo.subpassCount = 1; |
| 119 | createInfo.pSubpasses = &subpassDesc; |
| 120 | createInfo.dependencyCount = 0; |
| 121 | createInfo.pDependencies = nullptr; |
| 122 | |
| 123 | GR_VK_CALL_ERRCHECK(gpu->vkInterface(), CreateRenderPass(gpu->device(), |
| 124 | &createInfo, |
| 125 | nullptr, |
| 126 | &fRenderPass)); |
| 127 | } |
| 128 | |
| 129 | void GrVkRenderPass::freeGPUData(const GrVkGpu* gpu) const { |
| 130 | GR_VK_CALL(gpu->vkInterface(), DestroyRenderPass(gpu->device(), fRenderPass, nullptr)); |
| 131 | } |
| 132 | |
| 133 | // Works under the assumption that color attachment will always be the first attachment in our |
| 134 | // attachment array if it exists. |
| 135 | bool GrVkRenderPass::colorAttachmentIndex(uint32_t* index) const { |
| 136 | *index = 0; |
| 137 | if (fAttachmentFlags & kColor_AttachmentFlag) { |
| 138 | return true; |
| 139 | } |
| 140 | return false; |
| 141 | } |
| 142 | |
| 143 | // Works under the assumption that resolve attachment will always be after the color attachment. |
| 144 | bool GrVkRenderPass::resolveAttachmentIndex(uint32_t* index) const { |
| 145 | *index = 0; |
| 146 | if (fAttachmentFlags & kColor_AttachmentFlag) { |
| 147 | ++(*index); |
| 148 | } |
| 149 | if (fAttachmentFlags & kResolve_AttachmentFlag) { |
| 150 | return true; |
| 151 | } |
| 152 | return false; |
| 153 | } |
| 154 | |
| 155 | // Works under the assumption that stencil attachment will always be after the color and resolve |
| 156 | // attachment. |
| 157 | bool GrVkRenderPass::stencilAttachmentIndex(uint32_t* index) const { |
| 158 | *index = 0; |
| 159 | if (fAttachmentFlags & kColor_AttachmentFlag) { |
| 160 | ++(*index); |
| 161 | } |
| 162 | if (fAttachmentFlags & kResolve_AttachmentFlag) { |
| 163 | ++(*index); |
| 164 | } |
| 165 | if (fAttachmentFlags & kStencil_AttachmentFlag) { |
| 166 | return true; |
| 167 | } |
| 168 | return false; |
| 169 | } |
| 170 | |
| 171 | void GrVkRenderPass::getBeginInfo(const GrVkRenderTarget& target, |
| 172 | VkRenderPassBeginInfo* beginInfo, |
| 173 | VkSubpassContents* contents) const { |
| 174 | SkASSERT(this->isCompatible(target)); |
| 175 | |
| 176 | VkRect2D renderArea; |
| 177 | renderArea.offset = { 0, 0 }; |
| 178 | renderArea.extent = { (uint32_t)target.width(), (uint32_t)target.height() }; |
| 179 | |
| 180 | memset(beginInfo, 0, sizeof(VkRenderPassBeginInfo)); |
| 181 | beginInfo->sType = VK_STRUCTURE_TYPE_RENDER_PASS_BEGIN_INFO; |
| 182 | beginInfo->pNext = nullptr; |
| 183 | beginInfo->renderPass = fRenderPass; |
| 184 | beginInfo->framebuffer = target.framebuffer()->framebuffer(); |
| 185 | beginInfo->renderArea = renderArea; |
| 186 | beginInfo->clearValueCount = 0; |
| 187 | beginInfo->pClearValues = nullptr; |
| 188 | |
| 189 | // Currently just assuming no secondary cmd buffers. This value will need to be update if we |
| 190 | // have them. |
| 191 | *contents = VK_SUBPASS_CONTENTS_INLINE; |
| 192 | } |
| 193 | |
| 194 | bool GrVkRenderPass::isCompatible(const GrVkRenderTarget& target) const { |
| 195 | AttachmentsDescriptor desc; |
| 196 | AttachmentFlags flags; |
| 197 | target.getAttachmentsDescriptor(&desc, &flags); |
| 198 | |
| 199 | if (flags != fAttachmentFlags) { |
| 200 | return false; |
| 201 | } |
| 202 | |
| 203 | if (fAttachmentFlags & kColor_AttachmentFlag) { |
| 204 | if (fAttachmentsDescriptor.fColor != desc.fColor) { |
| 205 | return false; |
| 206 | } |
| 207 | } |
| 208 | if (fAttachmentFlags & kResolve_AttachmentFlag) { |
| 209 | if (fAttachmentsDescriptor.fResolve != desc.fResolve) { |
| 210 | return false; |
| 211 | } |
| 212 | } |
| 213 | if (fAttachmentFlags & kStencil_AttachmentFlag) { |
| 214 | if (fAttachmentsDescriptor.fStencil != desc.fStencil) { |
| 215 | return false; |
| 216 | } |
| 217 | } |
| 218 | |
| 219 | return true; |
| 220 | } |