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[vulkan] Calculate the size of the capture buffer

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It turns out that using the swapchain image for the size requirements is
unreliable: when running under renderdoc, vkGetImageMemoryRequirements
sets the memory requirements fields to 0, leading eventually to a null
memory object being passed to vkMapMemory, which does not end well.
This commit is contained in:
Bill Currie 2022-09-28 02:46:09 +09:00
parent 71e07e6454
commit 10f85edb21
1 changed files with 8 additions and 5 deletions
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13
libs/video/renderer/vulkan/capture.c
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@ -42,7 +42,6 @@ QFV_CreateCapture (qfv_device_t *device, int numframes,
{
qfv_instfuncs_t *ifunc = device->physDev->instance->funcs;
qfv_devfuncs_t *dfunc = device->funcs;
VkFormat format = VK_FORMAT_R8G8B8A8_UNORM;
VkFormatProperties format_props;
ifunc->vkGetPhysicalDeviceFormatProperties (device->physDev->dev,
@ -52,8 +51,6 @@ QFV_CreateCapture (qfv_device_t *device, int numframes,
Sys_Printf ("Swapchain does not support reading. FIXME\n");
return 0;
}
ifunc->vkGetPhysicalDeviceFormatProperties (device->physDev->dev, format,
&format_props);
qfv_capture_t *capture = malloc (sizeof (qfv_capture_t));
capture->device = device;
@ -63,13 +60,19 @@ QFV_CreateCapture (qfv_device_t *device, int numframes,
__auto_type cmdset = QFV_AllocCommandBufferSet (numframes, alloca);
QFV_AllocateCommandBuffers (device, cmdPool, 1, cmdset);
capture->imgsize = QFV_GetImageSize (device,
swapchain->images->a[0]);
//FIXME assumes the swapchain is 32bpp
capture->imgsize = swapchain->extent.width * swapchain->extent.height * 4;
for (int i = 0; i < numframes; i++) {
__auto_type image = &capture->image_set->a[i];
image->buffer = QFV_CreateBuffer (device, capture->imgsize,
VK_BUFFER_USAGE_TRANSFER_DST_BIT);
}
VkMemoryRequirements req;
dfunc->vkGetBufferMemoryRequirements (device->dev,
capture->image_set->a[0].buffer,
&req);
capture->imgsize = QFV_NextOffset (capture->imgsize, &req);
capture->memsize = numframes * capture->imgsize;
capture->memory = QFV_AllocBufferMemory (device,
capture->image_set->a[0].buffer,