GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX 0x9047
GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX 0x9048
GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX
0x9049
GPU_MEMORY_INFO_EVICTION_COUNT_NVX 0x904A
GPU_MEMORY_INFO_EVICTED_MEMORY_NVX 0x904B
The final two are particularly useful.
The report on the total number of memory ‘evictions’ (swap outs) that have occurred since the last call.

From NVidia specs:
GPU_MEMORY_INFO_DEDICATED_VIDMEM_NVX
– dedicated video memory, total size (in kb) of the GPU memory

GPU_MEMORY_INFO_TOTAL_AVAILABLE_MEMORY_NVX
– total available memory, total size (in Kb) of the memory
available for allocations

GPU_MEMORY_INFO_CURRENT_AVAILABLE_VIDMEM_NVX
– current available dedicated video memory (in kb), currently unused GPU memory

GPU_MEMORY_INFO_EVICTION_COUNT_NVX
– count of total evictions seen by system

GPU_MEMORY_INFO_EVICTED_MEMORY_NVX
– size of total video memory evicted (in kb)

PT

AFAIK I don’t need a GL3+ RC I am using GL2 RC.

Thanks

GLuint gpuIDs[16] = {0};
GLuint maxGpus = wglGetGPUIDsAMD(16, gpuIDs);
GLint freeMem[4] = {0};
glGetIntegerv(GL_TEXTURE_FREE_MEMORY_ATI, &freeMem[0]);
availableMemory = freeMem[0] / 1024;
if(wglGetGPUInfoAMD(gpuIDs[0], WGL_GPU_RAM_AMD, GL_UNSIGNED_INT, sizeof(GLuint), &totalMemory) != 1)
totalMemory = 0;
if(wglGetGPUInfoAMD(gpuIDs[0], WGL_GPU_CLOCK_AMD, GL_UNSIGNED_INT, sizeof(GLuint), &clockSpeed) != 1)
clockSpeed = 0;

Thanks jammer, this was indeed necessary to know.
They should move to MiB and KiB notations.

And about memory for an application.
Seperate for memory that an application has resources only used by itself and resources shared for other things.

int free_mem;
//returns in kB, so if you want MB,divide by 1024
glGetIntegerv(GL_TEXTURE_FREE_MEMORY_ATI,free_mem);
//now subtract this free memory from total memory and get used memory 🙂
used_mem = total_mem – free_mem;

I’ve noticed that it doesn’t matter whether you give to this function GL_TEXTURE_FREE_MEMORY_ATI or GL_VBO_FREE_MEMORY_ATI, it returns the same numbers

Is that in MB as in 1000000B or 1024^2B?
Same for kB: 1000 or 1024?

I’m hoping it’s 1000 and 1000000 we have KiB and MiB for the powers of two.

I must say that right now I’m a bit too lazy… I’ll try to update the post with an ATI_meminfo code snippet.