diff options
| author | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-08-23 17:41:27 +0200 |
|---|---|---|
| committer | Nicolai Hähnle <nicolai.haehnle@amd.com> | 2017-08-23 18:34:06 +0200 |
| commit | 5e6c212753eb8a0fc481a3e33e2820ca74fc643c (patch) | |
| tree | f760b2a6c3d803c44530c3011e76a7d4aff65198 | |
| parent | 7fb4b6f27056679e0271ba90dabf7e8a7bfbd181 (diff) | |
gallium: all drivers should accept two-dimensional constant buffer indexing
Most older drivers seem to just ignore the Dimension setting, so virtually
no changes should be needed.
| -rw-r--r-- | src/gallium/auxiliary/nir/tgsi_to_nir.c | 2 | ||||
| -rw-r--r-- | src/gallium/docs/source/screen.rst | 11 |
2 files changed, 4 insertions, 9 deletions
diff --git a/src/gallium/auxiliary/nir/tgsi_to_nir.c b/src/gallium/auxiliary/nir/tgsi_to_nir.c index 733eca0764..aa715dcae2 100644 --- a/src/gallium/auxiliary/nir/tgsi_to_nir.c +++ b/src/gallium/auxiliary/nir/tgsi_to_nir.c @@ -624,7 +624,7 @@ ttn_src_for_file_and_index(struct ttn_compile *c, unsigned file, unsigned index, assert(!dim); break; case TGSI_FILE_CONSTANT: - if (dim) { + if (dim && (dim->Index > 0 || dim->Indirect)) { op = nir_intrinsic_load_ubo; } else { op = nir_intrinsic_load_uniform; diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index be14ddd0c0..93d94a48e6 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -446,21 +446,16 @@ support different features. * ``PIPE_SHADER_CAP_MAX_CONST_BUFFER_SIZE``: The maximum size per constant buffer in bytes. * ``PIPE_SHADER_CAP_MAX_CONST_BUFFERS``: Maximum number of constant buffers that can be bound to any shader stage using ``set_constant_buffer``. If 0 or 1, the pipe will - only permit binding one constant buffer per shader, and the shaders will - not permit two-dimensional access to constants. + only permit binding one constant buffer per shader. If a value greater than 0 is returned, the driver can have multiple -constant buffers bound to shader stages. The CONST register file can -be accessed with two-dimensional indices, like in the example below. +constant buffers bound to shader stages. The CONST register file is +accessed with two-dimensional indices, like in the example below. DCL CONST[0][0..7] # declare first 8 vectors of constbuf 0 DCL CONST[3][0] # declare first vector of constbuf 3 MOV OUT[0], CONST[0][3] # copy vector 3 of constbuf 0 -For backwards compatibility, one-dimensional access to CONST register -file is still supported. In that case, the constbuf index is assumed -to be 0. - * ``PIPE_SHADER_CAP_MAX_TEMPS``: The maximum number of temporary registers. * ``PIPE_SHADER_CAP_TGSI_CONT_SUPPORTED``: Whether the continue opcode is supported. * ``PIPE_SHADER_CAP_INDIRECT_INPUT_ADDR``: Whether indirect addressing |