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c/direct_mode: Use VkDisplayModeParametersKHR.

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In favor of own struct to determine best available mode.
The loop now also starts as one, as we do not need compare the 0th mode
it itself and returns if there is only one mode.
This commit is contained in:
Lubosz Sarnecki 2020-04-07 15:31:36 +02:00
parent 48a51ddb23
commit 7da70568be
1 changed files with 28 additions and 30 deletions
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58
src/xrt/compositor/main/comp_window_direct_mode.c
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@ -399,44 +399,42 @@ choose_best_vk_mode_auto(struct comp_window_direct *w,
VkDisplayModePropertiesKHR *mode_properties,
int mode_count)
{
struct
{
uint16_t width;
uint16_t height;
float refresh;
int index;
} best_mode;
if (mode_count == 1)
return 0;
int best_index = 0;
// First priority: choose mode that maximizes rendered pixels.
// Second priority: choose mode with highest refresh rate.
for (int i = 0; i < mode_count; i++) {
VkDisplayModePropertiesKHR props = mode_properties[i];
uint16_t width = props.parameters.visibleRegion.width;
uint16_t height = props.parameters.visibleRegion.height;
float refresh = (float)props.parameters.refreshRate / 1000.;
for (int i = 1; i < mode_count; i++) {
VkDisplayModeParametersKHR current =
mode_properties[i].parameters;
COMP_DEBUG(w->base.c, "Available Vk direct mode %d: %dx%d@%.2f",
i, width, height, refresh);
i, current.visibleRegion.width,
current.visibleRegion.height,
(float)current.refreshRate / 1000.);
int max_pixels = best_mode.width * best_mode.height;
int pixels = width * height;
if (pixels > max_pixels) {
best_mode.index = i;
best_mode.width = width;
best_mode.height = height;
best_mode.refresh = refresh;
} else if (pixels == max_pixels &&
refresh > best_mode.refresh) {
best_mode.index = i;
/* update dims because it might be rotated */
best_mode.width = width;
best_mode.height = height;
best_mode.refresh = refresh;
VkDisplayModeParametersKHR best =
mode_properties[best_index].parameters;
int best_pixels =
best.visibleRegion.width * best.visibleRegion.height;
int pixels =
current.visibleRegion.width * current.visibleRegion.height;
if (pixels > best_pixels) {
best_index = i;
} else if (pixels == best_pixels &&
current.refreshRate > best.refreshRate) {
best_index = i;
}
}
VkDisplayModeParametersKHR best =
mode_properties[best_index].parameters;
COMP_DEBUG(w->base.c, "Auto choosing Vk direct mode %d: %dx%d@%.2f",
best_mode.index, best_mode.width, best_mode.height,
best_mode.refresh);
return best_mode.index;
best_index, best.visibleRegion.width,
best.visibleRegion.width, (float)best.refreshRate / 1000.);
return best_index;
}
static void