Vulkan-Docs/doc/specs/vulkan/man/VkMemoryPropertyFlags.txt

55 lines
1.7 KiB
Plaintext
Raw Normal View History

2016-02-16 09:53:44 +00:00
VkMemoryPropertyFlags(3)
========================
Name
----
VkMemoryPropertyFlags - Memory pool properties.
C Specification
---------------
include::../enums/VkMemoryPropertyFlagBits.txt[]
include::../flags/VkMemoryPropertyFlags.txt[]
Constants
---------
Change log for March 4, 2016 Vulkan 1.0.5 spec update: * Bump API patch number to 5 for this update. Github Issues: * Correctly describe slink:VkPhysicalDeviceProperties pname:deviceName member as a string, not a pointer to a string. Also one typo fix for "hetereogeneous" (public issue 4). * Replace maynot: macro with may: not, and "may: or maynot:" with "may:" (public issue 4). * Clarify that redundantly setting the state of a fence or event has no effect (public issue 4). * Minor fixes to ref pages to track descriptions of memory bits that changed in the core spec. Fix name of a member in the description of sname:sname:VkPipelineMultisampleStateCreateInfo (public issues 8, 13). * Remove redundant validity statement for sname:VkGraphicsPipelineCreateInfo::pname:stageCount (public issue 14). * Fix typos in chapters 7-9 (public issue 14). * Clarify the example demonstrating the behavior of code:OpMemoryBarrier in the <<shaders-execution-memory-ordering,shader memory acces ordering>> section (public issue 16). * Specify that freeing mapped memory implicitly unmaps the memory in the description of flink:vkFreeMemory (public issue 17). * Forbid allocation callbacks from calling into the API in the <<memory-allocation,memory allocation>> section (public issue 20). * Add missing validity rules about size being greater than 0 and offset being less than size of object. Fix flink:VkMappedMemoryRange's misinterpretation of offset (public issues 27, 31). * Add validity rule disallowing overlapping source/destination descriptors in flink:VkCopyDescriptorSet (public issue 32). * Clarify that array and matrix stride has to be a multiple of the base alignment of the array or matrix in the <<interfaces-resources-layout,Offset and Stride Assignment>> section (public issue 38). * Correct parenthesis floor nesting error in equation for <<textures-RGB-sexp,RGB to shared exponent conversion>>. Clarify case of when exp' is forced to 0, avoiding log2(0) undefined problem (public issue 40). * Remove redundant statement from the code:FragDepth description in the <<interfaces-builtin-variables,Built-In Variables>> section (public issue 47). * Define the clamping of the <<textures-level-of-detail-operation,bias added to the scale factor>> by linking to the slink:VkPhysicalDevice feature pname:maxSamplerLodBias (public issue 64). * Fix typo "optimal linear resources" and clarify the set of resources <<features-limits-bufferImageGranularity,the pname:bufferImageGranularity resource>> applies to (public issue 67). * Replace 'descriptor accessed by a pipeline' language for sname:VkDescriptorSetAllocateInfo with more precise phrasing about binding a descriptor set before a command that invokes work using that set (public issue 69). * tstripadj.svg contained an Inkscape tag which caused Firefox and IE 11 to fail to render it, and was illegal SVG. Generating Plain SVG from the Inkscape SVG source fixes this (public issue 70). * Fix validity for sname:VkVertexInputBindingDescription and sname:VkVertexInputAttributeDescription numbers (public issue 72). Internal Issues: * Clarify the meaning of ename:VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT in elink:VkFormatFeatureFlagBits with respect to depth compare (internal issue 107). * Added a note explaining that ename:VK_QUEUE_TRANSFER_BIT may or may not be reported for a queue family that already supports ename:VK_QUEUE_GRAPHICS_BIT or ename:VK_QUEUE_COMPUTE_BIT as the former is a strict subset of the latter ones (internal issue 116). * Add validity language for sname:VkDescriptorSetAllocateInfo about exceeding the descriptor pool capacity (internal issue 140). * Add ename:VK_INCOMPLETE success code for flink:vkEnumeratePhysicalDevices query (internal issue 163). Other Commits: * Add the VK_NV_glsl_shader extension definitions to the API. * Update GL_KHR_vulkan_glsl with 1) origin_upper_left as default 2) specialization array constant semantics. * Corrected/updated Data Format Specification date.
2016-03-03 13:06:18 +00:00
ename:VK_MEMORY_PROPERTY_DEVICE_LOCAL_BIT::
Identifies a memory pool that is the most efficient for device access.
2016-02-16 09:53:44 +00:00
ename:VK_MEMORY_PROPERTY_HOST_VISIBLE_BIT::
Identifies a memory pool that can be mapped into host memory address
space and thus is accessible by the host.
Change log for March 4, 2016 Vulkan 1.0.5 spec update: * Bump API patch number to 5 for this update. Github Issues: * Correctly describe slink:VkPhysicalDeviceProperties pname:deviceName member as a string, not a pointer to a string. Also one typo fix for "hetereogeneous" (public issue 4). * Replace maynot: macro with may: not, and "may: or maynot:" with "may:" (public issue 4). * Clarify that redundantly setting the state of a fence or event has no effect (public issue 4). * Minor fixes to ref pages to track descriptions of memory bits that changed in the core spec. Fix name of a member in the description of sname:sname:VkPipelineMultisampleStateCreateInfo (public issues 8, 13). * Remove redundant validity statement for sname:VkGraphicsPipelineCreateInfo::pname:stageCount (public issue 14). * Fix typos in chapters 7-9 (public issue 14). * Clarify the example demonstrating the behavior of code:OpMemoryBarrier in the <<shaders-execution-memory-ordering,shader memory acces ordering>> section (public issue 16). * Specify that freeing mapped memory implicitly unmaps the memory in the description of flink:vkFreeMemory (public issue 17). * Forbid allocation callbacks from calling into the API in the <<memory-allocation,memory allocation>> section (public issue 20). * Add missing validity rules about size being greater than 0 and offset being less than size of object. Fix flink:VkMappedMemoryRange's misinterpretation of offset (public issues 27, 31). * Add validity rule disallowing overlapping source/destination descriptors in flink:VkCopyDescriptorSet (public issue 32). * Clarify that array and matrix stride has to be a multiple of the base alignment of the array or matrix in the <<interfaces-resources-layout,Offset and Stride Assignment>> section (public issue 38). * Correct parenthesis floor nesting error in equation for <<textures-RGB-sexp,RGB to shared exponent conversion>>. Clarify case of when exp' is forced to 0, avoiding log2(0) undefined problem (public issue 40). * Remove redundant statement from the code:FragDepth description in the <<interfaces-builtin-variables,Built-In Variables>> section (public issue 47). * Define the clamping of the <<textures-level-of-detail-operation,bias added to the scale factor>> by linking to the slink:VkPhysicalDevice feature pname:maxSamplerLodBias (public issue 64). * Fix typo "optimal linear resources" and clarify the set of resources <<features-limits-bufferImageGranularity,the pname:bufferImageGranularity resource>> applies to (public issue 67). * Replace 'descriptor accessed by a pipeline' language for sname:VkDescriptorSetAllocateInfo with more precise phrasing about binding a descriptor set before a command that invokes work using that set (public issue 69). * tstripadj.svg contained an Inkscape tag which caused Firefox and IE 11 to fail to render it, and was illegal SVG. Generating Plain SVG from the Inkscape SVG source fixes this (public issue 70). * Fix validity for sname:VkVertexInputBindingDescription and sname:VkVertexInputAttributeDescription numbers (public issue 72). Internal Issues: * Clarify the meaning of ename:VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT in elink:VkFormatFeatureFlagBits with respect to depth compare (internal issue 107). * Added a note explaining that ename:VK_QUEUE_TRANSFER_BIT may or may not be reported for a queue family that already supports ename:VK_QUEUE_GRAPHICS_BIT or ename:VK_QUEUE_COMPUTE_BIT as the former is a strict subset of the latter ones (internal issue 116). * Add validity language for sname:VkDescriptorSetAllocateInfo about exceeding the descriptor pool capacity (internal issue 140). * Add ename:VK_INCOMPLETE success code for flink:vkEnumeratePhysicalDevices query (internal issue 163). Other Commits: * Add the VK_NV_glsl_shader extension definitions to the API. * Update GL_KHR_vulkan_glsl with 1) origin_upper_left as default 2) specialization array constant semantics. * Corrected/updated Data Format Specification date.
2016-03-03 13:06:18 +00:00
ename:VK_MEMORY_PROPERTY_HOST_COHERENT_BIT::
Identifies a memory pool where accesses between the host and the
coherency domain are coherent. Memory without this property requires
2016-02-16 09:53:44 +00:00
explicit use of flink:vkFlushMappedMemoryRanges after host writes to
this type of memory, and use of flink:vkInvalidateMappedMemoryRanges
before host reads from that memory.
Change log for March 4, 2016 Vulkan 1.0.5 spec update: * Bump API patch number to 5 for this update. Github Issues: * Correctly describe slink:VkPhysicalDeviceProperties pname:deviceName member as a string, not a pointer to a string. Also one typo fix for "hetereogeneous" (public issue 4). * Replace maynot: macro with may: not, and "may: or maynot:" with "may:" (public issue 4). * Clarify that redundantly setting the state of a fence or event has no effect (public issue 4). * Minor fixes to ref pages to track descriptions of memory bits that changed in the core spec. Fix name of a member in the description of sname:sname:VkPipelineMultisampleStateCreateInfo (public issues 8, 13). * Remove redundant validity statement for sname:VkGraphicsPipelineCreateInfo::pname:stageCount (public issue 14). * Fix typos in chapters 7-9 (public issue 14). * Clarify the example demonstrating the behavior of code:OpMemoryBarrier in the <<shaders-execution-memory-ordering,shader memory acces ordering>> section (public issue 16). * Specify that freeing mapped memory implicitly unmaps the memory in the description of flink:vkFreeMemory (public issue 17). * Forbid allocation callbacks from calling into the API in the <<memory-allocation,memory allocation>> section (public issue 20). * Add missing validity rules about size being greater than 0 and offset being less than size of object. Fix flink:VkMappedMemoryRange's misinterpretation of offset (public issues 27, 31). * Add validity rule disallowing overlapping source/destination descriptors in flink:VkCopyDescriptorSet (public issue 32). * Clarify that array and matrix stride has to be a multiple of the base alignment of the array or matrix in the <<interfaces-resources-layout,Offset and Stride Assignment>> section (public issue 38). * Correct parenthesis floor nesting error in equation for <<textures-RGB-sexp,RGB to shared exponent conversion>>. Clarify case of when exp' is forced to 0, avoiding log2(0) undefined problem (public issue 40). * Remove redundant statement from the code:FragDepth description in the <<interfaces-builtin-variables,Built-In Variables>> section (public issue 47). * Define the clamping of the <<textures-level-of-detail-operation,bias added to the scale factor>> by linking to the slink:VkPhysicalDevice feature pname:maxSamplerLodBias (public issue 64). * Fix typo "optimal linear resources" and clarify the set of resources <<features-limits-bufferImageGranularity,the pname:bufferImageGranularity resource>> applies to (public issue 67). * Replace 'descriptor accessed by a pipeline' language for sname:VkDescriptorSetAllocateInfo with more precise phrasing about binding a descriptor set before a command that invokes work using that set (public issue 69). * tstripadj.svg contained an Inkscape tag which caused Firefox and IE 11 to fail to render it, and was illegal SVG. Generating Plain SVG from the Inkscape SVG source fixes this (public issue 70). * Fix validity for sname:VkVertexInputBindingDescription and sname:VkVertexInputAttributeDescription numbers (public issue 72). Internal Issues: * Clarify the meaning of ename:VK_FORMAT_FEATURE_SAMPLED_IMAGE_FILTER_LINEAR_BIT in elink:VkFormatFeatureFlagBits with respect to depth compare (internal issue 107). * Added a note explaining that ename:VK_QUEUE_TRANSFER_BIT may or may not be reported for a queue family that already supports ename:VK_QUEUE_GRAPHICS_BIT or ename:VK_QUEUE_COMPUTE_BIT as the former is a strict subset of the latter ones (internal issue 116). * Add validity language for sname:VkDescriptorSetAllocateInfo about exceeding the descriptor pool capacity (internal issue 140). * Add ename:VK_INCOMPLETE success code for flink:vkEnumeratePhysicalDevices query (internal issue 163). Other Commits: * Add the VK_NV_glsl_shader extension definitions to the API. * Update GL_KHR_vulkan_glsl with 1) origin_upper_left as default 2) specialization array constant semantics. * Corrected/updated Data Format Specification date.
2016-03-03 13:06:18 +00:00
ename:VK_MEMORY_PROPERTY_HOST_CACHED_BIT::
Identifies memory that is cached by the host.
2016-02-16 09:53:44 +00:00
ename:VK_MEMORY_PROPERTY_LAZILY_ALLOCATED_BIT::
Identifies memory where an object's backing may be provided lazily
(when needed) by the implementation.
Description
-----------
These flags are used in the slink:VkMemoryAllocateInfo structure passed as parameter to flink:vkAllocateMemory
to define the properties of the memory pool the memory object should be allocated from.
Additionally, when querying the memory requirements of objects using
flink:vkGetBufferMemoryRequirements or flink:vkGetImageMemoryRequirements,
the ptext:memoryTypeBits member returned in the slink:VkMemoryRequirements
structure takes its values from these set of flags.
See Also
--------
slink:VkMemoryAllocateInfo, flink:vkAllocateMemory, slink:VkMemoryRequirements
include::footer.txt[]