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amd/gmlib: add tm_generate_formatted_3DLut

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Adds a utility to format a 3D LUT into the required memory layout and write it into a given buffer.

Signed-off-by: Peyton Lee <peytolee@amd.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/41190>
This commit is contained in:
Peyton Lee 2026-04-27 15:38:14 +08:00 • committed by Marge Bot
parent ca92f8697e
commit ab878cc1ea
2 changed files with 46 additions and 4 deletions
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40
src/amd/gmlib/tonemap_adaptor.c
View file

@ -50,12 +50,12 @@ void tm_destroy(void** pp_tmGenerator)
*pp_tmGenerator = NULL;
}
int tm_generate3DLut(struct tonemap_param* pInparam, void* pformattedLutData)
int tm_generate3DLut(struct tonemap_param* pInparam, void* pLutData)
{
enum TMGReturnCode result;
struct ToneMappingParameters tmParams;
tmParams.lutData = (uint16_t *)pformattedLutData;
tmParams.lutData = (uint16_t *)pLutData;
ToneMapGenerator_SetInternalAllocators(
(struct ToneMapGenerator*)pInparam->tm_handle,
@ -76,3 +76,39 @@ int tm_generate3DLut(struct tonemap_param* pInparam, void* pformattedLutData)
return (int)result;
}
int tm_generate_formatted_3DLut(
uint16_t* pCpuLutData,
int cpuLutDim,
int gpuLutContainerDim,
const float bitDepthCpu,
const uint32_t bitDepthGpu,
void* pGpuLutData)
{
int result = 1;
/* HardCode: use 256bits alignment */
int AlignedLutContainerDim = ((gpuLutContainerDim + 32) >> 5) * 32;
if ((NULL != pCpuLutData) && (NULL != pGpuLutData)) {
uint16_t* pGpuData = (uint16_t *)pGpuLutData;
int cpuSurfIndex = 0;
int gpuSurfIndex = 0;
int widthSize = AlignedLutContainerDim * 4;
int sliceSize = widthSize * gpuLutContainerDim;
int i, j, k;
for (i = 0; i < cpuLutDim; i++) {
for (j = 0; j < cpuLutDim; j++) {
for (k = 0; k < cpuLutDim; k++) {
cpuSurfIndex = i * cpuLutDim * cpuLutDim * 3 + j * cpuLutDim * 3 + k * 3;
gpuSurfIndex = i * sliceSize + j * widthSize + k * 4;
*(pGpuData + gpuSurfIndex + 0) = (uint16_t)(((float)(pCpuLutData[cpuSurfIndex + 0]) / (float)bitDepthCpu) * bitDepthGpu);
*(pGpuData + gpuSurfIndex + 1) = (uint16_t)(((float)(pCpuLutData[cpuSurfIndex + 1]) / (float)bitDepthCpu) * bitDepthGpu);
*(pGpuData + gpuSurfIndex + 2) = (uint16_t)(((float)(pCpuLutData[cpuSurfIndex + 2]) / (float)bitDepthCpu) * bitDepthGpu);
}
}
}
result = 0;
}
return result;
}

10
src/amd/gmlib/tonemap_adaptor.h
View file

@ -26,8 +26,14 @@ struct tonemap_param
void* tm_create(void);
void tm_destroy(void** pp_tmGenerator);
int tm_generate3DLut(struct tonemap_param* pInparam, void* pformattedLutData);
int tm_generate3DLut(struct tonemap_param* pInparam, void* pLutData);
int tm_generate_formatted_3DLut(uint16_t* pCpuLutData,
int cpuLutDim,
int gpuLutContainerDim,
const float bitDepthCpu,
const uint32_t bitDepthGpu,
void* pGpuLutData);
#ifdef __cplusplus
}
#endif
#endif