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Vulkan: Implement swap_interval > 1.

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We have to fake it by duping since Vulkan has no native support for
this.
This commit is contained in:
Hans-Kristian Arntzen 2016-07-24 00:34:48 +02:00
parent bcd73b4a79
commit f54b0c0ff0
3 changed files with 21 additions and 1 deletions
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1
gfx/common/vulkan_common.c
View File

@ -2207,6 +2207,7 @@ bool vulkan_create_swapchain(gfx_ctx_vulkan_data_t *vk,
present_modes[i]);
}
vk->context.swap_interval = swap_interval;
for (i = 0; i < present_mode_count; i++)
{
if (!swap_interval && present_modes[i] == VK_PRESENT_MODE_MAILBOX_KHR)

2
gfx/common/vulkan_common.h
View File

@ -105,6 +105,7 @@ typedef struct vulkan_context
uint32_t current_swapchain_index;
unsigned swapchain_width;
unsigned swapchain_height;
unsigned swap_interval;
VkFormat swapchain_format;
slock_t *queue_lock;
@ -116,6 +117,7 @@ typedef struct vulkan_context
/* Used by screenshot to get blits with correct colorspace. */
bool swapchain_is_srgb;
bool swap_interval_emulation_lock;
} vulkan_context_t;
typedef struct gfx_ctx_vulkan_data

19
gfx/drivers/vulkan.c
View File

@ -1889,7 +1889,8 @@ static bool vulkan_frame(void *data, const void *frame,
video_context_driver_swap_buffers();
performance_counter_stop(&swapbuffers);
video_context_driver_update_window_title();
if (!vk->context->swap_interval_emulation_lock)
video_context_driver_update_window_title();
/* Handle spurious swapchain invalidations as soon as we can,
* i.e. right after swap buffers. */
@ -1915,6 +1916,22 @@ static bool vulkan_frame(void *data, const void *frame,
vulkan_inject_black_frame(vk);
}
/* Vulkan doesn't directly support swap_interval > 1, so we fake it by duping out more frames. */
if (vk->context->swap_interval > 1 && !vk->context->swap_interval_emulation_lock)
{
unsigned i;
vk->context->swap_interval_emulation_lock = true;
for (i = 1; i < vk->context->swap_interval; i++)
{
if (!vulkan_frame(vk, NULL, 0, 0, frame_count, 0, msg))
{
vk->context->swap_interval_emulation_lock = false;
return false;
}
}
vk->context->swap_interval_emulation_lock = false;
}
return true;
}