claude_code/procedural-3d-engine
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Request host coherent memory types for index and vertex staging buffers (Fixes #203), example uses own getMemoryTypeIndex function for clarification, enabled exceptions for Android build

Browse source
This commit is contained in:
saschawillems 2016-07-18 20:32:25 +02:00
parent cd13e69622
commit 574287f210
2 changed files with 35 additions and 8 deletions
Download patch file Download diff file Expand all files Collapse all files

42
triangle/triangle.cpp
View file

@ -16,6 +16,7 @@
#include <string.h>
#include <assert.h>
#include <vector>
#include <exception>
#define GLM_FORCE_RADIANS
#define GLM_FORCE_DEPTH_ZERO_TO_ONE
@ -142,6 +143,29 @@ public:
vkFreeMemory(device, uniformDataVS.memory, nullptr);
}
// This function is used to request a device memory type that supports all the property flags we request (e.g. device local, host visibile)
// Upon success it will return the index of the memory type that fits our requestes memory properties
// This is necessary as implementations can offer an arbitrary number of memory types with different
// memory properties.
// You can check http://vulkan.gpuinfo.org/ for details on different memory configurations
uint32_t getMemoryTypeIndex(uint32_t typeBits, VkMemoryPropertyFlags properties)
{
// Iterate over all memory types available for the device used in this example
for (uint32_t i = 0; i < deviceMemoryProperties.memoryTypeCount; i++)
{
if ((typeBits & 1) == 1)
{
if ((deviceMemoryProperties.memoryTypes[i].propertyFlags & properties) == properties)
{
return i;
}
}
typeBits >>= 1;
}
throw "Could not find a suitable memory type!";
}
// We are going to use several temporary command buffers for setup stuff
// like submitting barriers for layout translations of buffer copies
// This function will allocate a single (primary) command buffer from the
@ -457,7 +481,9 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &vertexBufferInfo, nullptr, &stagingBuffers.vertices.buffer));
vkGetBufferMemoryRequirements(device, stagingBuffers.vertices.buffer, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
// Request a host visible memory type that can be used to copy our data do
// Also request it to be coherent, so that writes are visible to the GPU right after unmapping the buffer
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &stagingBuffers.vertices.memory));
// Map and copy
VK_CHECK_RESULT(vkMapMemory(device, stagingBuffers.vertices.memory, 0, memAlloc.allocationSize, 0, &data));
@ -471,7 +497,7 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &vertexBufferInfo, nullptr, &vertices.buf));
vkGetBufferMemoryRequirements(device, vertices.buf, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &vertices.mem));
VK_CHECK_RESULT(vkBindBufferMemory(device, vertices.buf, vertices.mem, 0));
@ -484,7 +510,7 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &indexbufferInfo, nullptr, &stagingBuffers.indices.buffer));
vkGetBufferMemoryRequirements(device, stagingBuffers.indices.buffer, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &stagingBuffers.indices.memory));
VK_CHECK_RESULT(vkMapMemory(device, stagingBuffers.indices.memory, 0, indexBufferSize, 0, &data));
memcpy(data, indexBuffer.data(), indexBufferSize);
@ -496,7 +522,7 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &indexbufferInfo, nullptr, &indices.buf));
vkGetBufferMemoryRequirements(device, indices.buf, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &indices.mem));
VK_CHECK_RESULT(vkBindBufferMemory(device, indices.buf, indices.mem, 0));
@ -558,7 +584,7 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &vertexBufferInfo, nullptr, &vertices.buf));
vkGetBufferMemoryRequirements(device, vertices.buf, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &vertices.mem));
VK_CHECK_RESULT(vkMapMemory(device, vertices.mem, 0, memAlloc.allocationSize, 0, &data));
memcpy(data, vertexBuffer.data(), vertexBufferSize);
@ -575,7 +601,7 @@ public:
VK_CHECK_RESULT(vkCreateBuffer(device, &indexbufferInfo, nullptr, &indices.buf));
vkGetBufferMemoryRequirements(device, indices.buf, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &indices.mem));
VK_CHECK_RESULT(vkMapMemory(device, indices.mem, 0, indexBufferSize, 0, &data));
memcpy(data, indexBuffer.data(), indexBufferSize);
@ -730,7 +756,7 @@ public:
VkMemoryRequirements memReqs;
vkGetImageMemoryRequirements(device, depthStencil.image, &memReqs);
memAlloc.allocationSize = memReqs.size;
memAlloc.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
memAlloc.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT);
VK_CHECK_RESULT(vkAllocateMemory(device, &memAlloc, nullptr, &depthStencil.mem));
VK_CHECK_RESULT(vkBindImageMemory(device, depthStencil.image, depthStencil.mem, 0));
@ -1078,7 +1104,7 @@ public:
// after every update.
// Note that this may affect performance so you might not want to do this
// in a real world application that updates buffers on a regular base
allocInfo.memoryTypeIndex = getMemoryType(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
allocInfo.memoryTypeIndex = getMemoryTypeIndex(memReqs.memoryTypeBits, VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT | VK_MEMORY_PROPERTY_HOST_COHERENT_BIT);
// Allocate memory for the uniform buffer
VK_CHECK_RESULT(vkAllocateMemory(device, &allocInfo, nullptr, &(uniformDataVS.memory)));
// Bind memory to buffer