diff options
Diffstat (limited to 'main.c')
| -rw-r--r-- | main.c | 42 |
1 files changed, 34 insertions, 8 deletions
@@ -187,6 +187,7 @@ static VkPhysicalDeviceProperties deviceProperties; static VmaAllocator vmaAllocator; +//SDL_Window *win; PuglWorld *world; PuglView *view; static VkDevice device; @@ -544,6 +545,7 @@ static void freeCommandBuffers() } } +// Kludge over SDL_Vulkan_GetDrawableSize() void getFrame(PuglView *view, int *width, int *height) { const PuglRect rect = puglGetFrame(view); @@ -941,6 +943,14 @@ void initVulkan() #else #include "pugl/detail/x11.h" // HACK: Vulkan needs access to this + // Eventually, Pugl should wrap the call to XXX, where XXX is one of: + // * vkCreateXlibSurfaceKHR() + // * vkCreateWin32SurfaceKHR() + // * vkCreateMacOSSurfaceMVK() (using MoltenVK compatibility over Metal) + // * possibly (?) others in the future + // However, it should do it differently than how SDL does it, because SDL loads the Vulkan Loader + // using hidden global state, which goes against Pugl's embedded model. + // This could be negotiated at a later time. const VkXlibSurfaceCreateInfoKHR createInfo = { .sType = VK_STRUCTURE_TYPE_XLIB_SURFACE_CREATE_INFO_KHR, .dpy = ((struct PuglWorldImpl*)world)->impl->display, @@ -1605,6 +1615,11 @@ void teardownScene() destroyUniformBuffer(); } +// This may look like it's drawing, but it's not. +// This is pre-recording drawing commands into a buffer +// that can be submitted to the GPU over and over again. +// Of course, this could instead happen inside of `onDisplay` +// if drawing commands vary per-frame. void recordCommandBuffers() { VkClearValue clearValues[3] = {{ @@ -1663,18 +1678,23 @@ void recordCommandBuffers() } } +// TODO: Vulkan swapchains can be created by "realloc"-ing an existing swapchain. +// However, data connected to the old swapchain must not be deleted until +// they are no longer in-flight, so we accumulate garbage. +// The easy solution is to simply wait for device idle and then delete then recreate everything, +// but user interfaces expect the ability to drag-resize quickly and without graphical glitches or stuttering. // FIXME: Memory leak void recreateSwapchain() { oldRawSwapchain = rawSwapchain; - destroyGraphicsPipeline(); + //destroyGraphicsPipeline(); // endVulkan(); - destroySwapchainFramebuffers(); - destroyRenderPass(); - if (msaaEnabled) destroyMultisampleImage(); - destroyDepthImage(); - destroySwapchainImageViews(); + //destroySwapchainFramebuffers(); + //destroyRenderPass(); + //if (msaaEnabled) destroyMultisampleImage(); + //destroyDepthImage(); + //destroySwapchainImageViews(); //destroySwapchain(); // beginVulkan(); @@ -1691,10 +1711,12 @@ void recreateSwapchain() recordCommandBuffers(); } +/** BEGIN APPLICATION SECTION *****************************************************************************************/ + float angle = 0.0f; uint32_t syncIndex; float location[4][4]; -void *data; +void *data; // Persistent memory map to GPU uniform buffer uint32_t imageIndex; PuglStatus onResize(PuglView *view) @@ -1703,6 +1725,8 @@ PuglStatus onResize(PuglView *view) //SDL_Vulkan_GetDrawableSize(win, &width, &height); //int width, height; //getFrame(view, &width, &height); + + /* Apparently Vulkan already knows the new size internally and doesn't need it passed */ recreateSwapchain(); /* Adjust aspect ratio */ load_perspective( @@ -1712,6 +1736,8 @@ PuglStatus onResize(PuglView *view) ); } +// Draws one frame to an image acquired from the swapchain (vkAcquireNextImageKHR, vkQueueSubmitKHR) +// and then gives it to the presentation engine for displaying (vkQueuePresentKHR) PuglStatus onDisplay(PuglView *view) { float rotation[4][4]; @@ -1899,7 +1925,7 @@ int main(int argc, char **argv) puglPollEvents(world, -1); puglDispatchEvents(world); } -quit: + cleanup(); //SDL_Quit(); return 0; |