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Updates to iOS and macOS functionality using MoltenVK.

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Use getAssetPath() instead of ASSET_PATH to support broader range of platforms.
Multisampling example determines sample rate from device at runtime.
Move example wrapper code from DemoViewController.mm to dedicated MVKExample.cpp file.
Remove AssImp libraries for iOS and macOS from repo, and add instructions for
generating them from AssImp source files.
Update general README.md file to mention support for iOS and macOS platforms.
Add Apple logo for README.md.
Update Vulkan logo to current registered TM logo.
Update copyright notice of MoltenVK example files to MIT license.
Examples use +/- on main keyboard, instead of numpad.
This commit is contained in:
Bill Hollings 2017-06-22 14:53:49 -04:00
parent 8b30d7b5fd
commit 96601494d5
27 changed files with 317 additions and 159 deletions
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28
multisampling/multisampling.cpp
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@ -11,6 +11,7 @@
#include <string.h>
#include <assert.h>
#include <vector>
#include <algorithm>
#define GLM_FORCE_RADIANS
#define GLM_FORCE_DEPTH_ZERO_TO_ONE
@ -25,7 +26,6 @@
#define VERTEX_BUFFER_BIND_ID 0
#define ENABLE_VALIDATION false
#define SAMPLE_COUNT VK_SAMPLE_COUNT_8_BIT
struct {
struct {
@ -44,6 +44,7 @@ class VulkanExample : public VulkanExampleBase
{
public:
bool useSampleShading = false;
VkSampleCountFlagBits sampleCount = VK_SAMPLE_COUNT_1_BIT;
struct {
vks::Texture2D colorMap;
@ -123,7 +124,7 @@ public:
void setupMultisampleTarget()
{
// Check if device supports requested sample count for color and depth frame buffer
assert((deviceProperties.limits.framebufferColorSampleCounts >= SAMPLE_COUNT) && (deviceProperties.limits.framebufferDepthSampleCounts >= SAMPLE_COUNT));
assert((deviceProperties.limits.framebufferColorSampleCounts >= sampleCount) && (deviceProperties.limits.framebufferDepthSampleCounts >= sampleCount));
// Color target
VkImageCreateInfo info = vks::initializers::imageCreateInfo();
@ -136,7 +137,7 @@ public:
info.arrayLayers = 1;
info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
info.tiling = VK_IMAGE_TILING_OPTIMAL;
info.samples = SAMPLE_COUNT;
info.samples = sampleCount;
// Image will only be used as a transient target
info.usage = VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT | VK_IMAGE_USAGE_COLOR_ATTACHMENT_BIT;
info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
@ -184,7 +185,7 @@ public:
info.arrayLayers = 1;
info.sharingMode = VK_SHARING_MODE_EXCLUSIVE;
info.tiling = VK_IMAGE_TILING_OPTIMAL;
info.samples = SAMPLE_COUNT;
info.samples = sampleCount;
// Image will only be used as a transient target
info.usage = VK_IMAGE_USAGE_TRANSIENT_ATTACHMENT_BIT | VK_IMAGE_USAGE_DEPTH_STENCIL_ATTACHMENT_BIT;
info.initialLayout = VK_IMAGE_LAYOUT_UNDEFINED;
@ -230,7 +231,7 @@ public:
// Multisampled attachment that we render to
attachments[0].format = swapChain.colorFormat;
attachments[0].samples = SAMPLE_COUNT;
attachments[0].samples = sampleCount;
attachments[0].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
// No longer required after resolve, this may save some bandwidth on certain GPUs
attachments[0].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
@ -252,7 +253,7 @@ public:
// Multisampled depth attachment we render to
attachments[2].format = depthFormat;
attachments[2].samples = SAMPLE_COUNT;
attachments[2].samples = sampleCount;
attachments[2].loadOp = VK_ATTACHMENT_LOAD_OP_CLEAR;
attachments[2].storeOp = VK_ATTACHMENT_STORE_OP_DONT_CARE;
attachments[2].stencilLoadOp = VK_ATTACHMENT_LOAD_OP_DONT_CARE;
@ -630,7 +631,7 @@ public:
shaderStages[0] = loadShader(getAssetPath() + "shaders/mesh/mesh.vert.spv", VK_SHADER_STAGE_VERTEX_BIT);
shaderStages[1] = loadShader(getAssetPath() + "shaders/mesh/mesh.frag.spv", VK_SHADER_STAGE_FRAGMENT_BIT);
// Setup multi sampling
multisampleState.rasterizationSamples = SAMPLE_COUNT; // Number of samples to use for rasterization
multisampleState.rasterizationSamples = sampleCount; // Number of samples to use for rasterization
VK_CHECK_RESULT(vkCreateGraphicsPipelines(device, pipelineCache, 1, &pipelineCreateInfo, nullptr, &pipelines.MSAA));
@ -693,6 +694,7 @@ public:
void prepare()
{
setSampleCount();
VulkanExampleBase::prepare();
loadAssets();
setupVertexDescriptions();
@ -733,6 +735,16 @@ public:
break;
}
}
// Determine the maximum sample count usable by the platform
void setSampleCount()
{
VkSampleCountFlags flags = std::min(deviceProperties.limits.framebufferColorSampleCounts,
deviceProperties.limits.framebufferDepthSampleCounts);
// Extract the value of the high-order bit of the flags
sampleCount = (VkSampleCountFlagBits)(flags ? (1 << (fls(flags) - 1)) : 0);
}
};
VULKAN_EXAMPLE_MAIN()
VULKAN_EXAMPLE_MAIN()