19 using ImageVec = std::vector<XrSwapchainImageBaseHeader *>;
28 std::vector<XrSwapchainImageBaseHeader *> images;
31 CHECK_XR(xrEnumerateSwapchainImages(swapchain, 0, &image_count,
nullptr),
32 "Failed to get count of swapchain images to create for the VR session.");
34 CHECK_XR(xrEnumerateSwapchainImages(swapchain, images.size(), &image_count, images[0]),
35 "Failed to create swapchain images for the VR session.");
41 const XrSession &session,
42 const XrViewConfigurationView &view_config)
45 XrSwapchainCreateInfo create_info = {XR_TYPE_SWAPCHAIN_CREATE_INFO};
48 CHECK_XR(xrEnumerateSwapchainFormats(session, 0, &format_count,
nullptr),
49 "Failed to get count of swapchain image formats.");
50 std::vector<int64_t> swapchain_formats(format_count);
51 CHECK_XR(xrEnumerateSwapchainFormats(
52 session, swapchain_formats.size(), &format_count, swapchain_formats.data()),
53 "Failed to get swapchain image formats.");
54 assert(swapchain_formats.size() == format_count);
57 swapchain_formats, m_format, m_is_srgb_buffer);
60 "Error: No format matching OpenXR runtime supported swapchain formats found.");
63 create_info.usageFlags = XR_SWAPCHAIN_USAGE_SAMPLED_BIT |
64 XR_SWAPCHAIN_USAGE_COLOR_ATTACHMENT_BIT;
65 create_info.format = *chosen_format;
66 create_info.sampleCount = view_config.recommendedSwapchainSampleCount;
67 create_info.width = view_config.recommendedImageRectWidth;
68 create_info.height = view_config.recommendedImageRectHeight;
69 create_info.faceCount = 1;
70 create_info.arraySize = 1;
71 create_info.mipCount = 1;
73 CHECK_XR(xrCreateSwapchain(session, &create_info, &m_oxr->swapchain),
74 "Failed to create OpenXR swapchain.");
76 m_image_width = create_info.width;
77 m_image_height = create_info.height;
83 : m_oxr(
std::move(other.m_oxr)),
84 m_image_width(other.m_image_width),
85 m_image_height(other.m_image_height),
86 m_format(other.m_format),
87 m_is_srgb_buffer(other.m_is_srgb_buffer)
90 other.m_oxr =
nullptr;
96 if (m_oxr && m_oxr->swapchain != XR_NULL_HANDLE) {
104 XrSwapchainImageAcquireInfo acquire_info = {XR_TYPE_SWAPCHAIN_IMAGE_ACQUIRE_INFO};
105 XrSwapchainImageWaitInfo wait_info = {XR_TYPE_SWAPCHAIN_IMAGE_WAIT_INFO};
108 CHECK_XR(xrAcquireSwapchainImage(m_oxr->swapchain, &acquire_info, &image_idx),
109 "Failed to acquire swapchain image for the VR session.");
110 wait_info.timeout = XR_INFINITE_DURATION;
111 CHECK_XR(xrWaitSwapchainImage(m_oxr->swapchain, &wait_info),
112 "Failed to acquire swapchain image for the VR session.");
114 return m_oxr->swapchain_images[image_idx];
119 r_sub_image.swapchain = m_oxr->swapchain;
120 r_sub_image.imageRect.offset = {0, 0};
121 r_sub_image.imageRect.extent = {m_image_width, m_image_height};
131 return m_is_srgb_buffer;
136 XrSwapchainImageReleaseInfo release_info = {XR_TYPE_SWAPCHAIN_IMAGE_RELEASE_INFO};
138 CHECK_XR(xrReleaseSwapchainImage(m_oxr->swapchain, &release_info),
139 "Failed to release swapchain image used to submit VR session frame.");
GHOST C-API function and type declarations.
static OpenXRSwapchainData::ImageVec swapchain_images_create(XrSwapchain swapchain, GHOST_IXrGraphicsBinding &gpu_binding)
#define CHECK_XR_ASSERT(call)
#define CHECK_XR(call, error_msg)
virtual std::optional< int64_t > chooseSwapchainFormat(const std::vector< int64_t > &runtime_formats, GHOST_TXrSwapchainFormat &r_format, bool &r_is_rgb_format) const =0
virtual std::vector< XrSwapchainImageBaseHeader * > createSwapchainImages(uint32_t image_count)=0
GHOST_XrSwapchain(GHOST_IXrGraphicsBinding &gpu_binding, const XrSession &session, const XrViewConfigurationView &view_config)
GHOST_TXrSwapchainFormat getFormat() const
void updateCompositionLayerProjectViewSubImage(XrSwapchainSubImage &r_sub_image)
bool isBufferSRGB() const
XrSwapchainImageBaseHeader * acquireDrawableSwapchainImage()
std::vector< XrSwapchainImageBaseHeader * > ImageVec
ImageVec swapchain_images