[Mesa-dev] [PATCH] nvc0: add support for BGRA8 images

Ilia Mirkin imirkin at alum.mit.edu
Fri Jul 22 12:14:51 UTC 2016 

You said earlier that pbo-readpixels-small worked with this patch on Fermi
:( Oh well.

On Jul 22, 2016 5:39 AM, "Samuel Pitoiset" <samuel.pitoiset at gmail.com>
wrote:

> This patch introduces the following regressions:
>
> bin/fcc-read-to-pbo-after-clear -auto
> bin/gl-2.1-pbo -auto -fbo
> bin/fbo-pbo-readpixels-small -auto
> bin/pbo-read-argb8888 -auto
> bin/pbo-readpixels-small -auto
> bin/mesa_pack_invert-readpixels -auto -fbo
>
> Tested on Fermi (GF119).
>
> On 07/16/2016 09:09 PM, Ilia Mirkin wrote:
>
>> This is useful for pbo downloads, which are now accelerated with images.
>> BGRA8 is a moderately common format to do that in.
>>
>> Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
>> ---
>>
>> This needs testing on SM20 and SM30. I've tested it on SM35 and
>>
>> bin/pbo-readpixels-small -auto
>>
>> worked fine. (Didn't until I properly fixed the various items.)
>>
>>  src/gallium/drivers/nouveau/codegen/nv50_ir.cpp               | 2 ++
>>  src/gallium/drivers/nouveau/codegen/nv50_ir.h                 | 3 +++
>>  src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp     | 2 ++
>>  src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp | 4 ++++
>>  src/gallium/drivers/nouveau/nv50/g80_defs.xml.h               | 1 +
>>  src/gallium/drivers/nouveau/nv50/nv50_formats.c               | 3 ++-
>>  src/gallium/drivers/nouveau/nvc0/nvc0_tex.c                   | 2 ++
>>  7 files changed, 16 insertions(+), 1 deletion(-)
>>
>> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
>> b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
>> index 2caebe8..179ad0b 100644
>> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
>> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir.cpp
>> @@ -1012,6 +1012,8 @@ const struct TexInstruction::ImgFormatDesc
>> TexInstruction::formatTable[] =
>>     { "RG8_SNORM",    2, {  8,  8,  0,  0 }, SNORM },
>>     { "R16_SNORM",    1, { 16,  0,  0,  0 }, SNORM },
>>     { "R8_SNORM",     1, {  8,  0,  0,  0 }, SNORM },
>> +
>> +   { "BGRA8",        4, {  8,  8,  8,  8 }, UNORM, true },
>>  };
>>
>>  void
>> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir.h
>> b/src/gallium/drivers/nouveau/codegen/nv50_ir.h
>> index 41804b6..6d2ee8b 100644
>> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir.h
>> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir.h
>> @@ -412,6 +412,8 @@ enum ImgFormat
>>     FMT_R16_SNORM,
>>     FMT_R8_SNORM,
>>
>> +   FMT_BGRA8,
>> +
>>     IMG_FORMAT_COUNT,
>>  };
>>
>> @@ -967,6 +969,7 @@ public:
>>        uint8_t components;
>>        uint8_t bits[4];
>>        ImgType type;
>> +      bool bgra;
>>     };
>>
>>     static const struct ImgFormatDesc formatTable[IMG_FORMAT_COUNT];
>> diff --git a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
>> b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
>> index 61eb7f5..7dff08a 100644
>> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
>> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_from_tgsi.cpp
>> @@ -508,6 +508,8 @@ static nv50_ir::ImgFormat translateImgFormat(uint
>> format)
>>     FMT_CASE(R8G8_SNORM, RG8_SNORM);
>>     FMT_CASE(R16_SNORM, R16_SNORM);
>>     FMT_CASE(R8_SNORM, R8_SNORM);
>> +
>> +   FMT_CASE(B8G8R8A8_UNORM, BGRA8);
>>     }
>>
>>     assert(!"Unexpected format");
>> diff --git
>> a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
>> b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
>> index 18955eb..92bc0bb 100644
>> --- a/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
>> +++ b/src/gallium/drivers/nouveau/codegen/nv50_ir_lowering_nvc0.cpp
>> @@ -1940,6 +1940,10 @@
>> NVC0LoweringPass::convertSurfaceFormat(TexInstruction *su)
>>           bld.mkCvt(OP_CVT, TYPE_F32, typedDst[i], TYPE_F16, typedDst[i]);
>>        }
>>     }
>> +
>> +   if (format->bgra) {
>> +      std::swap(typedDst[0], typedDst[2]);
>> +   }
>>  }
>>
>>  void
>> diff --git a/src/gallium/drivers/nouveau/nv50/g80_defs.xml.h
>> b/src/gallium/drivers/nouveau/nv50/g80_defs.xml.h
>> index 5d40624..49bf860 100644
>> --- a/src/gallium/drivers/nouveau/nv50/g80_defs.xml.h
>> +++ b/src/gallium/drivers/nouveau/nv50/g80_defs.xml.h
>> @@ -177,6 +177,7 @@ WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
>> SOFTWARE.
>>  #define GK104_IMAGE_FORMAT_RG32_FLOAT                          0x0000000d
>>  #define GK104_IMAGE_FORMAT_RG32_SINT                           0x0000000e
>>  #define GK104_IMAGE_FORMAT_RG32_UINT                           0x0000000f
>> +#define GK104_IMAGE_FORMAT_BGRA8_UNORM                         0x00000011
>>  #define GK104_IMAGE_FORMAT_RGB10_A2_UNORM                      0x00000013
>>  #define GK104_IMAGE_FORMAT_RGB10_A2_UINT                       0x00000015
>>  #define GK104_IMAGE_FORMAT_RGBA8_UNORM                         0x00000018
>> diff --git a/src/gallium/drivers/nouveau/nv50/nv50_formats.c
>> b/src/gallium/drivers/nouveau/nv50/nv50_formats.c
>> index 34d32d1..07c4419 100644
>> --- a/src/gallium/drivers/nouveau/nv50/nv50_formats.c
>> +++ b/src/gallium/drivers/nouveau/nv50/nv50_formats.c
>> @@ -50,6 +50,7 @@
>>  #define U_IB  PIPE_BIND_BLENDABLE | U_IR
>>  #define U_TD  PIPE_BIND_SCANOUT | PIPE_BIND_DISPLAY_TARGET | U_TB
>>  #define U_TZ  PIPE_BIND_DEPTH_STENCIL | U_T
>> +#define U_ID  U_TD | U_I
>>  #if NOUVEAU_DRIVER == 0xc0
>>  # define U_TC  U_TB
>>  # define U_IC  U_IB
>> @@ -122,7 +123,7 @@ const struct nvc0_format
>> nvc0_format_table[PIPE_FORMAT_COUNT] =
>>  const struct nv50_format nv50_format_table[PIPE_FORMAT_COUNT] =
>>  #endif
>>  {
>> -   C4(A, B8G8R8A8_UNORM, BGRA8_UNORM, B, G, R, A, UNORM, A8B8G8R8, TD),
>> +   C4(A, B8G8R8A8_UNORM, BGRA8_UNORM, B, G, R, A, UNORM, A8B8G8R8, ID),
>>     F3(A, B8G8R8X8_UNORM, BGRX8_UNORM, B, G, R, xx, UNORM, A8B8G8R8, TD),
>>     C4(A, B8G8R8A8_SRGB, BGRA8_SRGB, B, G, R, A, UNORM, A8B8G8R8, TD),
>>     F3(A, B8G8R8X8_SRGB, BGRX8_SRGB, B, G, R, xx, UNORM, A8B8G8R8, TD),
>> diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
>> b/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
>> index 6e9e768..439f0f5 100644
>> --- a/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
>> +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_tex.c
>> @@ -1162,6 +1162,7 @@ static const uint8_t
>> nve4_su_format_map[PIPE_FORMAT_COUNT] =
>>     [PIPE_FORMAT_R16G16B16A16_SNORM] = GK104_IMAGE_FORMAT_RGBA16_SNORM,
>>     [PIPE_FORMAT_R16G16B16A16_SINT] = GK104_IMAGE_FORMAT_RGBA16_SINT,
>>     [PIPE_FORMAT_R16G16B16A16_UINT] = GK104_IMAGE_FORMAT_RGBA16_UINT,
>> +   [PIPE_FORMAT_B8G8R8A8_UNORM] = GK104_IMAGE_FORMAT_BGRA8_UNORM,
>>     [PIPE_FORMAT_R8G8B8A8_UNORM] = GK104_IMAGE_FORMAT_RGBA8_UNORM,
>>     [PIPE_FORMAT_R8G8B8A8_SNORM] = GK104_IMAGE_FORMAT_RGBA8_SNORM,
>>     [PIPE_FORMAT_R8G8B8A8_SINT] = GK104_IMAGE_FORMAT_RGBA8_SINT,
>> @@ -1216,6 +1217,7 @@ static const uint16_t
>> nve4_su_format_aux_map[PIPE_FORMAT_COUNT] =
>>
>>     [PIPE_FORMAT_R10G10B10A2_UNORM] = 0x2a24,
>>     [PIPE_FORMAT_R10G10B10A2_UINT] = 0x2a24,
>> +   [PIPE_FORMAT_B8G8R8A8_UNORM] = 0x2a24,
>>     [PIPE_FORMAT_R8G8B8A8_UNORM] = 0x2a24,
>>     [PIPE_FORMAT_R8G8B8A8_SNORM] = 0x2a24,
>>     [PIPE_FORMAT_R8G8B8A8_SINT] = 0x2a24,
>>
>>
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