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gallium/compute: Drop TGSI dependency.

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Add a shader cap for specifying the preferred shader representation.
Right now the only supported value is TGSI, other enum values will be
added as they are needed.

This is mainly to accommodate AMD's LLVM compiler back-end by letting
it bypass the TGSI representation for compute programs.  Other drivers
will keep using the common TGSI instruction set.

Reviewed-by: Tom Stellard <thomas.stellard@amd.com>
This commit is contained in:
Francisco Jerez 2012-03-18 23:59:33 +01:00
parent 2644952bd4
commit 57c048f291
3 changed files with 13 additions and 2 deletions
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2
src/gallium/docs/source/screen.rst
View file

@ -185,6 +185,8 @@ to be 0.
If unsupported, only float opcodes are supported.
* ``PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS``: THe maximum number of texture
samplers.
* ``PIPE_SHADER_CAP_PREFERRED_IR``: Preferred representation of the
program. It should be one of the ``pipe_shader_ir`` enum values.
.. _pipe_compute_cap:

11
src/gallium/include/pipe/p_defines.h
View file

@ -524,7 +524,16 @@ enum pipe_shader_cap
PIPE_SHADER_CAP_INDIRECT_CONST_ADDR = 15,
PIPE_SHADER_CAP_SUBROUTINES = 16, /* BGNSUB, ENDSUB, CAL, RET */
PIPE_SHADER_CAP_INTEGERS = 17,
PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS = 18
PIPE_SHADER_CAP_MAX_TEXTURE_SAMPLERS = 18,
PIPE_SHADER_CAP_PREFERRED_IR = 19
};
/**
* Shader intermediate representation.
*/
enum pipe_shader_ir
{
PIPE_SHADER_IR_TGSI
};
/**

2
src/gallium/include/pipe/p_state.h
View file

@ -584,7 +584,7 @@ struct pipe_resolve_info
struct pipe_compute_state
{
const struct tgsi_token *tokens; /**< Compute program to be executed. */
const void *prog; /**< Compute program to be executed. */
unsigned req_local_mem; /**< Required size of the LOCAL resource. */
unsigned req_private_mem; /**< Required size of the PRIVATE resource. */
unsigned req_input_mem; /**< Required size of the INPUT resource. */