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video: Add Vulkan support for vivante fb

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Vivante drivers use the VK_KHR_display extension for rendering directly
to the frame buffer. This patch adds support to the video driver for
Vulkan rendering using that method.

- Add an utility function SDL_Vulkan_Display_CreateSurface that creates
a surface using this extension. The display to use (if there are
multiple) can be overridden using the environment variable
"SDL_VULKAN_DISPLAY".

- Use this function in a new compilation unit SDL_vivantevideo.c,
which implements the SDL_VIDEO_VULKAN methods of the driver structure.
This commit is contained in:
Wladimir J. van der Laan 2019-05-19 10:36:44 -07:00
parent 00e5eeb40e
commit 29f3445316
5 changed files with 568 additions and 0 deletions
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7
src/video/SDL_vulkan_internal.h
View file

@ -73,6 +73,13 @@ extern SDL_bool SDL_Vulkan_GetInstanceExtensions_Helper(unsigned *userCount,
unsigned nameCount,
const char *const *names);
/* Create a surface directly from a display connected to a physical device
* using the DisplayKHR extension.
* This needs to be passed an instance that was created with the VK_KHR_DISPLAY_EXTENSION_NAME
* exension. */
extern SDL_bool SDL_Vulkan_Display_CreateSurface(void *vkGetInstanceProcAddr,
VkInstance instance,
VkSurfaceKHR *surface);
#else
/* No SDL Vulkan support, just include the header for typedefs */

341
src/video/SDL_vulkan_utils.c
View file

@ -22,6 +22,7 @@
#include "SDL_vulkan_internal.h"
#include "SDL_error.h"
#include "SDL_log.h"
#if SDL_VIDEO_VULKAN
@ -167,6 +168,346 @@ SDL_bool SDL_Vulkan_GetInstanceExtensions_Helper(unsigned *userCount,
return SDL_TRUE;
}
/* Alpha modes, in order of preference */
static const VkDisplayPlaneAlphaFlagBitsKHR alphaModes[4] = {
VK_DISPLAY_PLANE_ALPHA_OPAQUE_BIT_KHR,
VK_DISPLAY_PLANE_ALPHA_GLOBAL_BIT_KHR,
VK_DISPLAY_PLANE_ALPHA_PER_PIXEL_BIT_KHR,
VK_DISPLAY_PLANE_ALPHA_PER_PIXEL_PREMULTIPLIED_BIT_KHR,
};
SDL_bool SDL_Vulkan_Display_CreateSurface(void *vkGetInstanceProcAddr_,
VkInstance instance,
VkSurfaceKHR *surface)
{
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr =
(PFN_vkGetInstanceProcAddr)vkGetInstanceProcAddr_;
#define VULKAN_INSTANCE_FUNCTION(name) \
PFN_##name name = (PFN_##name)vkGetInstanceProcAddr((VkInstance)instance, #name)
VULKAN_INSTANCE_FUNCTION(vkEnumeratePhysicalDevices);
VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceDisplayPropertiesKHR);
VULKAN_INSTANCE_FUNCTION(vkGetDisplayModePropertiesKHR);
VULKAN_INSTANCE_FUNCTION(vkGetPhysicalDeviceDisplayPlanePropertiesKHR);
VULKAN_INSTANCE_FUNCTION(vkGetDisplayPlaneCapabilitiesKHR);
VULKAN_INSTANCE_FUNCTION(vkGetDisplayPlaneSupportedDisplaysKHR);
VULKAN_INSTANCE_FUNCTION(vkCreateDisplayPlaneSurfaceKHR);
#undef VULKAN_INSTANCE_FUNCTION
VkDisplaySurfaceCreateInfoKHR createInfo = {};
VkResult result;
uint32_t physicalDeviceCount = 0;
VkPhysicalDevice *physicalDevices = NULL;
uint32_t physicalDeviceIndex;
const char *chosenDisplayId;
int displayId = 0; /* Counting from physical device 0, display 0 */
if(!vkEnumeratePhysicalDevices ||
!vkGetPhysicalDeviceDisplayPropertiesKHR ||
!vkGetDisplayModePropertiesKHR ||
!vkGetPhysicalDeviceDisplayPlanePropertiesKHR ||
!vkGetDisplayPlaneCapabilitiesKHR ||
!vkGetDisplayPlaneSupportedDisplaysKHR ||
!vkCreateDisplayPlaneSurfaceKHR)
{
SDL_SetError(VK_KHR_DISPLAY_EXTENSION_NAME
" extension is not enabled in the Vulkan instance.");
goto error;
}
if ((chosenDisplayId = SDL_getenv("SDL_VULKAN_DISPLAY")) != NULL)
{
displayId = SDL_atoi(chosenDisplayId);
}
/* Enumerate physical devices */
result =
vkEnumeratePhysicalDevices(instance, &physicalDeviceCount, NULL);
if(result != VK_SUCCESS)
{
SDL_SetError("Could not enumerate Vulkan physical devices");
goto error;
}
if(physicalDeviceCount == 0)
{
SDL_SetError("No Vulkan physical devices");
goto error;
}
physicalDevices = SDL_malloc(sizeof(VkPhysicalDevice) * physicalDeviceCount);
if(!physicalDevices)
{
SDL_OutOfMemory();
goto error;
}
result =
vkEnumeratePhysicalDevices(instance, &physicalDeviceCount, physicalDevices);
if(result != VK_SUCCESS)
{
SDL_SetError("Error enumerating physical devices");
goto error;
}
for(physicalDeviceIndex = 0; physicalDeviceIndex < physicalDeviceCount;
physicalDeviceIndex++)
{
VkPhysicalDevice physicalDevice = physicalDevices[physicalDeviceIndex];
uint32_t displayPropertiesCount = 0;
VkDisplayPropertiesKHR *displayProperties = NULL;
uint32_t displayModePropertiesCount = 0;
VkDisplayModePropertiesKHR *displayModeProperties = NULL;
int bestMatchIndex = -1;
uint32_t refreshRate = 0;
uint32_t i;
uint32_t displayPlanePropertiesCount = 0;
int planeIndex = -1;
VkDisplayKHR display;
VkDisplayPlanePropertiesKHR *displayPlaneProperties = NULL;
VkExtent2D extent;
VkDisplayPlaneCapabilitiesKHR planeCaps;
/* Get information about the physical displays */
result =
vkGetPhysicalDeviceDisplayPropertiesKHR(physicalDevice, &displayPropertiesCount, NULL);
if (result != VK_SUCCESS || displayPropertiesCount == 0)
{
/* This device has no physical device display properties, move on to next. */
continue;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Number of display properties for device %u: %u",
physicalDeviceIndex, displayPropertiesCount);
if (displayId < 0 || displayId >= displayPropertiesCount)
{
/* Display id specified was higher than number of available displays, move to next physical device. */
displayId -= displayPropertiesCount;
continue;
}
displayProperties = SDL_malloc(sizeof(VkDisplayPropertiesKHR) * displayPropertiesCount);
if(!displayProperties)
{
SDL_OutOfMemory();
goto error;
}
result =
vkGetPhysicalDeviceDisplayPropertiesKHR(physicalDevice, &displayPropertiesCount, displayProperties);
if (result != VK_SUCCESS || displayPropertiesCount == 0) {
SDL_free(displayProperties);
SDL_SetError("Error enumerating physical device displays");
goto error;
}
display = displayProperties[displayId].display;
extent = displayProperties[displayId].physicalResolution;
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Display: %s Native resolution: %ux%u",
displayProperties[displayId].displayName, extent.width, extent.height);
free(displayProperties);
displayProperties = NULL;
/* Get display mode properties for the chosen display */
result =
vkGetDisplayModePropertiesKHR(physicalDevice, display, &displayModePropertiesCount, NULL);
if (result != VK_SUCCESS || displayModePropertiesCount == 0)
{
SDL_SetError("Error enumerating display modes");
goto error;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Number of display modes: %u", displayModePropertiesCount);
displayModeProperties = SDL_malloc(sizeof(VkDisplayModePropertiesKHR) * displayModePropertiesCount);
if(!displayModeProperties)
{
SDL_OutOfMemory();
goto error;
}
result =
vkGetDisplayModePropertiesKHR(physicalDevice, display, &displayModePropertiesCount, displayModeProperties);
if (result != VK_SUCCESS || displayModePropertiesCount == 0) {
SDL_SetError("Error enumerating display modes");
SDL_free(displayModeProperties);
goto error;
}
/* Try to find a display mode that matches the native resolution */
for (i = 0; i < displayModePropertiesCount; ++i)
{
if (displayModeProperties[i].parameters.visibleRegion.width == extent.width &&
displayModeProperties[i].parameters.visibleRegion.height == extent.height &&
displayModeProperties[i].parameters.refreshRate > refreshRate)
{
bestMatchIndex = i;
refreshRate = displayModeProperties[i].parameters.refreshRate;
}
}
if (bestMatchIndex < 0)
{
SDL_SetError("Found no matching display mode");
SDL_free(displayModeProperties);
goto error;
}
createInfo.displayMode = displayModeProperties[bestMatchIndex].displayMode;
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Matching mode %ux%u with refresh rate %u",
displayModeProperties[bestMatchIndex].parameters.visibleRegion.width,
displayModeProperties[bestMatchIndex].parameters.visibleRegion.height,
refreshRate);
SDL_free(displayModeProperties);
displayModeProperties = NULL;
/* Try to find a plane index that supports our display */
result =
vkGetPhysicalDeviceDisplayPlanePropertiesKHR(physicalDevice, &displayPlanePropertiesCount, NULL);
if (result != VK_SUCCESS || displayPlanePropertiesCount == 0)
{
SDL_SetError("Error enumerating display planes");
goto error;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Number of display planes: %u", displayPlanePropertiesCount);
displayPlaneProperties = SDL_malloc(sizeof(VkDisplayPlanePropertiesKHR) * displayPlanePropertiesCount);
if(!displayPlaneProperties)
{
SDL_OutOfMemory();
goto error;
}
result =
vkGetPhysicalDeviceDisplayPlanePropertiesKHR(physicalDevice, &displayPlanePropertiesCount, displayPlaneProperties);
if (result != VK_SUCCESS || displayPlanePropertiesCount == 0)
{
SDL_SetError("Error enumerating display plane properties");
SDL_free(displayPlaneProperties);
goto error;
}
for (i = 0; i < displayPlanePropertiesCount; ++i)
{
uint32_t planeSupportedDisplaysCount = 0;
VkDisplayKHR *planeSupportedDisplays = NULL;
uint32_t j;
/* Check if plane is attached to a display, if not, continue. */
if (displayPlaneProperties[i].currentDisplay == VK_NULL_HANDLE)
continue;
/* Check supported displays for this plane. */
result =
vkGetDisplayPlaneSupportedDisplaysKHR(physicalDevice, i, &planeSupportedDisplaysCount, NULL);
if (result != VK_SUCCESS || planeSupportedDisplaysCount == 0)
{
/* No supported displays, on to next plane. */
SDL_free(displayPlaneProperties);
continue;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Number of supported displays for plane %u: %u", i, planeSupportedDisplaysCount);
planeSupportedDisplays = SDL_malloc(sizeof(VkDisplayKHR) * planeSupportedDisplaysCount);
if(!planeSupportedDisplays)
{
SDL_free(displayPlaneProperties);
SDL_OutOfMemory();
goto error;
}
result =
vkGetDisplayPlaneSupportedDisplaysKHR(physicalDevice, i, &planeSupportedDisplaysCount, planeSupportedDisplays);
if (result != VK_SUCCESS || planeSupportedDisplaysCount == 0)
{
SDL_SetError("Error enumerating supported displays, or no supported displays");
SDL_free(planeSupportedDisplays);
SDL_free(displayPlaneProperties);
goto error;
}
for (j = 0; j < planeSupportedDisplaysCount && planeSupportedDisplays[j] != display; ++j)
;
SDL_free(planeSupportedDisplays);
planeSupportedDisplays = NULL;
if (j == planeSupportedDisplaysCount)
{
/* This display is not supported for this plane, move on. */
continue;
}
result = vkGetDisplayPlaneCapabilitiesKHR(physicalDevice, createInfo.displayMode, i, &planeCaps);
if (result != VK_SUCCESS)
{
SDL_SetError("Error getting display plane capabilities");
SDL_free(displayPlaneProperties);
goto error;
}
/* Check if plane fulfills extent requirements. */
if (extent.width >= planeCaps.minDstExtent.width && extent.height >= planeCaps.minDstExtent.height &&
extent.width <= planeCaps.maxDstExtent.width && extent.height <= planeCaps.maxDstExtent.height)
{
/* If it does, choose this plane. */
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Choosing plane %d, minimum extent %dx%d maximum extent %dx%d", i,
planeCaps.minDstExtent.width, planeCaps.minDstExtent.height,
planeCaps.maxDstExtent.width, planeCaps.maxDstExtent.height);
planeIndex = i;
break;
}
}
if (planeIndex < 0)
{
SDL_SetError("No plane supports the selected resolution");
SDL_free(displayPlaneProperties);
goto error;
}
createInfo.planeIndex = planeIndex;
createInfo.planeStackIndex = displayPlaneProperties[planeIndex].currentStackIndex;
SDL_free(displayPlaneProperties);
displayPlaneProperties = NULL;
/* Find a supported alpha mode. Not all planes support OPAQUE */
createInfo.alphaMode = VK_DISPLAY_PLANE_ALPHA_OPAQUE_BIT_KHR;
for (uint32_t i = 0; i < SDL_arraysize(alphaModes); i++) {
if (planeCaps.supportedAlpha & alphaModes[i]) {
createInfo.alphaMode = alphaModes[i];
break;
}
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Chose alpha mode 0x%x", createInfo.alphaMode);
/* Found a match, finally! Fill in extent, and break from loop */
createInfo.imageExtent = extent;
break;
}
SDL_free(physicalDevices);
physicalDevices = NULL;
if (physicalDeviceIndex == physicalDeviceCount)
{
SDL_SetError("No usable displays found or requested display out of range");
return SDL_FALSE;
}
createInfo.sType = VK_STRUCTURE_TYPE_DISPLAY_SURFACE_CREATE_INFO_KHR;
createInfo.transform = VK_SURFACE_TRANSFORM_IDENTITY_BIT_KHR;
createInfo.globalAlpha = 1.0f;
result = vkCreateDisplayPlaneSurfaceKHR(instance, &createInfo,
NULL, surface);
if(result != VK_SUCCESS)
{
SDL_SetError("vkCreateDisplayPlaneSurfaceKHR failed: %s",
SDL_Vulkan_GetResultString(result));
return SDL_FALSE;
}
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vulkandisplay: Created surface");
return SDL_TRUE;
error:
SDL_free(physicalDevices);
return SDL_FALSE;
}
#endif
/* vi: set ts=4 sw=4 expandtab: */

8
src/video/vivante/SDL_vivantevideo.c
View file

@ -37,6 +37,7 @@
#include "SDL_vivantevideo.h"
#include "SDL_vivanteplatform.h"
#include "SDL_vivanteopengles.h"
#include "SDL_vivantevulkan.h"
static int
@ -109,6 +110,13 @@ VIVANTE_Create()
device->GL_DeleteContext = VIVANTE_GLES_DeleteContext;
#endif
#if SDL_VIDEO_VULKAN
device->Vulkan_LoadLibrary = VIVANTE_Vulkan_LoadLibrary;
device->Vulkan_UnloadLibrary = VIVANTE_Vulkan_UnloadLibrary;
device->Vulkan_GetInstanceExtensions = VIVANTE_Vulkan_GetInstanceExtensions;
device->Vulkan_CreateSurface = VIVANTE_Vulkan_CreateSurface;
#endif
device->PumpEvents = VIVANTE_PumpEvents;
return device;

159
src/video/vivante/SDL_vivantevulkan.c Normal file
View file

@ -0,0 +1,159 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* @author Wladimir J. van der Laan. Based on Jacob Lifshay's
* SDL_x11vulkan.c, Mark Callow's SDL_androidvulkan.c, and
* the FSL demo framework.
*/
#include "../../SDL_internal.h"
#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_VIVANTE
#include "SDL_vivantevideo.h"
#include "SDL_assert.h"
#include "SDL_loadso.h"
#include "SDL_vivantevulkan.h"
#include "SDL_syswm.h"
#include "SDL_log.h"
int VIVANTE_Vulkan_LoadLibrary(_THIS, const char *path)
{
VkExtensionProperties *extensions = NULL;
Uint32 i, extensionCount = 0;
SDL_bool hasSurfaceExtension = SDL_FALSE;
SDL_bool hasDisplayExtension = SDL_FALSE;
PFN_vkGetInstanceProcAddr vkGetInstanceProcAddr = NULL;
if(_this->vulkan_config.loader_handle)
return SDL_SetError("Vulkan already loaded");
/* Load the Vulkan loader library */
if(!path)
path = SDL_getenv("SDL_VULKAN_LIBRARY");
if(!path)
{
/* If no path set, try Vivante fb vulkan driver explicitly */
path = "libvulkan-fb.so";
_this->vulkan_config.loader_handle = SDL_LoadObject(path);
if(!_this->vulkan_config.loader_handle)
{
/* If that couldn't be loaded, fall back to default name */
path = "libvulkan.so";
_this->vulkan_config.loader_handle = SDL_LoadObject(path);
}
} else {
_this->vulkan_config.loader_handle = SDL_LoadObject(path);
}
if(!_this->vulkan_config.loader_handle)
return -1;
SDL_strlcpy(_this->vulkan_config.loader_path, path,
SDL_arraysize(_this->vulkan_config.loader_path));
SDL_LogDebug(SDL_LOG_CATEGORY_VIDEO, "vivante: Loaded vulkan driver %s", path);
vkGetInstanceProcAddr = (PFN_vkGetInstanceProcAddr)SDL_LoadFunction(
_this->vulkan_config.loader_handle, "vkGetInstanceProcAddr");
if(!vkGetInstanceProcAddr)
goto fail;
_this->vulkan_config.vkGetInstanceProcAddr = (void *)vkGetInstanceProcAddr;
_this->vulkan_config.vkEnumerateInstanceExtensionProperties =
(void *)((PFN_vkGetInstanceProcAddr)_this->vulkan_config.vkGetInstanceProcAddr)(
VK_NULL_HANDLE, "vkEnumerateInstanceExtensionProperties");
if(!_this->vulkan_config.vkEnumerateInstanceExtensionProperties)
goto fail;
extensions = SDL_Vulkan_CreateInstanceExtensionsList(
(PFN_vkEnumerateInstanceExtensionProperties)
_this->vulkan_config.vkEnumerateInstanceExtensionProperties,
&extensionCount);
if(!extensions)
goto fail;
for(i = 0; i < extensionCount; i++)
{
if(SDL_strcmp(VK_KHR_SURFACE_EXTENSION_NAME, extensions[i].extensionName) == 0)
hasSurfaceExtension = SDL_TRUE;
else if(SDL_strcmp(VK_KHR_DISPLAY_EXTENSION_NAME, extensions[i].extensionName) == 0)
hasDisplayExtension = SDL_TRUE;
}
SDL_free(extensions);
if(!hasSurfaceExtension)
{
SDL_SetError("Installed Vulkan doesn't implement the "
VK_KHR_SURFACE_EXTENSION_NAME " extension");
goto fail;
}
else if(!hasDisplayExtension)
{
SDL_SetError("Installed Vulkan doesn't implement the "
VK_KHR_DISPLAY_EXTENSION_NAME "extension");
goto fail;
}
return 0;
fail:
SDL_UnloadObject(_this->vulkan_config.loader_handle);
_this->vulkan_config.loader_handle = NULL;
return -1;
}
void VIVANTE_Vulkan_UnloadLibrary(_THIS)
{
if(_this->vulkan_config.loader_handle)
{
SDL_UnloadObject(_this->vulkan_config.loader_handle);
_this->vulkan_config.loader_handle = NULL;
}
}
SDL_bool VIVANTE_Vulkan_GetInstanceExtensions(_THIS,
SDL_Window *window,
unsigned *count,
const char **names)
{
static const char *const extensionsForVivante[] = {
VK_KHR_SURFACE_EXTENSION_NAME, VK_KHR_DISPLAY_EXTENSION_NAME
};
if(!_this->vulkan_config.loader_handle)
{
SDL_SetError("Vulkan is not loaded");
return SDL_FALSE;
}
return SDL_Vulkan_GetInstanceExtensions_Helper(
count, names, SDL_arraysize(extensionsForVivante),
extensionsForVivante);
}
SDL_bool VIVANTE_Vulkan_CreateSurface(_THIS,
SDL_Window *window,
VkInstance instance,
VkSurfaceKHR *surface)
{
if(!_this->vulkan_config.loader_handle)
{
SDL_SetError("Vulkan is not loaded");
return SDL_FALSE;
}
return SDL_Vulkan_Display_CreateSurface(_this->vulkan_config.vkGetInstanceProcAddr, instance, surface);
}
#endif
/* vi: set ts=4 sw=4 expandtab: */

53
src/video/vivante/SDL_vivantevulkan.h Normal file
View file

@ -0,0 +1,53 @@
/*
Simple DirectMedia Layer
Copyright (C) 1997-2017 Sam Lantinga <slouken@libsdl.org>
This software is provided 'as-is', without any express or implied
warranty. In no event will the authors be held liable for any damages
arising from the use of this software.
Permission is granted to anyone to use this software for any purpose,
including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
1. The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
2. Altered source versions must be plainly marked as such, and must not be
misrepresented as being the original software.
3. This notice may not be removed or altered from any source distribution.
*/
/*
* @author Wladimir J. van der Laan. Based on Jacob Lifshay's
* SDL_x11vulkan.h and Mark Callow's SDL_vivantevulkan.h
*/
#include "../../SDL_internal.h"
#ifndef SDL_vivantevulkan_h_
#define SDL_vivantevulkan_h_
#include "../SDL_vulkan_internal.h"
#include "../SDL_sysvideo.h"
#if SDL_VIDEO_VULKAN && SDL_VIDEO_DRIVER_VIVANTE
int VIVANTE_Vulkan_LoadLibrary(_THIS, const char *path);
void VIVANTE_Vulkan_UnloadLibrary(_THIS);
SDL_bool VIVANTE_Vulkan_GetInstanceExtensions(_THIS,
SDL_Window *window,
unsigned *count,
const char **names);
SDL_bool VIVANTE_Vulkan_CreateSurface(_THIS,
SDL_Window *window,
VkInstance instance,
VkSurfaceKHR *surface);
#endif
#endif /* SDL_vivantevulkan_h_ */
/* vi: set ts=4 sw=4 expandtab: */