src/gallium/drivers/zink/zink_render_pass.c

   1 /*
   2  * Copyright 2018 Collabora Ltd.
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  */
  23
  24 #include "zink_render_pass.h"
  25
  26 #include "zink_screen.h"
  27
  28 #include "util/u_memory.h"
  29 #include "util/u_string.h"
  30
  31 static VkRenderPass
  32 create_render_pass(VkDevice dev, struct zink_render_pass_state *state)
  33 {
  34
  35    VkAttachmentReference color_refs[PIPE_MAX_COLOR_BUFS], zs_ref;
  36    VkAttachmentDescription attachments[PIPE_MAX_COLOR_BUFS + 1];
  37
  38    for (int i = 0; i < state->num_cbufs; i++) {
  39       struct zink_rt_attrib *rt = state->rts + i;
  40       attachments[i].flags = 0;
  41       attachments[i].format = rt->format;
  42       attachments[i].samples = rt->samples;
  43       attachments[i].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
  44       attachments[i].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
  45       attachments[i].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
  46       attachments[i].stencilStoreOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
  47       attachments[i].initialLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
  48       attachments[i].finalLayout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
  49       color_refs[i].attachment = i;
  50       color_refs[i].layout = VK_IMAGE_LAYOUT_COLOR_ATTACHMENT_OPTIMAL;
  51    }
  52
  53    int num_attachments = state->num_cbufs;
  54    if (state->have_zsbuf)  {
  55       struct zink_rt_attrib *rt = state->rts + state->num_cbufs;
  56       attachments[num_attachments].flags = 0;
  57       attachments[num_attachments].format = rt->format;
  58       attachments[num_attachments].samples = rt->samples;
  59       attachments[num_attachments].loadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
  60       attachments[num_attachments].storeOp = VK_ATTACHMENT_STORE_OP_STORE;
  61       attachments[num_attachments].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_LOAD;
  62       attachments[num_attachments].stencilStoreOp = VK_ATTACHMENT_STORE_OP_STORE;
  63       attachments[num_attachments].initialLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
  64       attachments[num_attachments].finalLayout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
  65
  66       zs_ref.attachment = num_attachments++;
  67       zs_ref.layout = VK_IMAGE_LAYOUT_DEPTH_STENCIL_ATTACHMENT_OPTIMAL;
  68    }
  69
  70    VkSubpassDescription subpass = {};
  71    subpass.pipelineBindPoint = VK_PIPELINE_BIND_POINT_GRAPHICS;
  72    subpass.colorAttachmentCount = state->num_cbufs;
  73    subpass.pColorAttachments = color_refs;
  74    subpass.pDepthStencilAttachment = state->have_zsbuf ? &zs_ref : NULL;
  75
  76    VkRenderPassCreateInfo rpci = {};
  77    rpci.sType = VK_STRUCTURE_TYPE_RENDER_PASS_CREATE_INFO;
  78    rpci.attachmentCount = num_attachments;
  79    rpci.pAttachments = attachments;
  80    rpci.subpassCount = 1;
  81    rpci.pSubpasses = &subpass;
  82
  83    VkRenderPass render_pass;
  84    if (vkCreateRenderPass(dev, &rpci, NULL, &render_pass) != VK_SUCCESS)
  85       return VK_NULL_HANDLE;
  86
  87    return render_pass;
  88 }
  89
  90 struct zink_render_pass *
  91 zink_create_render_pass(struct zink_screen *screen,
  92                         struct zink_render_pass_state *state)
  93 {
  94    struct zink_render_pass *rp = CALLOC_STRUCT(zink_render_pass);
  95    if (!rp)
  96       goto fail;
  97
  98    pipe_reference_init(&rp->reference, 1);
  99
 100    rp->render_pass = create_render_pass(screen->dev, state);
 101    if (!rp->render_pass)
 102       goto fail;
 103
 104    return rp;
 105
 106 fail:
 107    if (rp)
 108       zink_destroy_render_pass(screen, rp);
 109    return NULL;
 110 }
 111
 112 void
 113 zink_destroy_render_pass(struct zink_screen *screen,
 114                          struct zink_render_pass *rp)
 115 {
 116    vkDestroyRenderPass(screen->dev, rp->render_pass, NULL);
 117    FREE(rp);
 118 }
 119
 120 void
 121 debug_describe_zink_render_pass(char* buf, const struct zink_render_pass *ptr)
 122 {
 123    sprintf(buf, "zink_render_pass");
 124 }