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mesa: add _mesa_program_state_value_size() helper 

This allows us to query the uniform size required to store the
state value.

CC: <stable@lists.freedesktop.org>
Reviewed-by: Marek Olšák <marek.olsak@amd.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/5656>
This commit is contained in:
Timothy Arceri 2020-06-26 19:56:11 +10:00 committed by Marge Bot
parent 0e7b1a6b1a
commit 5ddab654d9
2 changed files with 11 additions and 0 deletions
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9
src/mesa/program/prog_statevars.c
View File

@ -630,6 +630,15 @@ fetch_state(struct gl_context *ctx, const gl_state_index16 state[],
}
}
unsigned
_mesa_program_state_value_size(const gl_state_index16 state[STATE_LENGTH])
{
if (state[0] == STATE_LIGHT && state[2] == STATE_SPOT_CUTOFF)
return 1;
/* Everything else is packed into vec4s */
return 4;
}
/**
* Return a bitmask of the Mesa state flags (_NEW_* values) which would

2
src/mesa/program/prog_statevars.h
View File

@ -139,6 +139,8 @@ extern void
_mesa_load_state_parameters(struct gl_context *ctx,
struct gl_program_parameter_list *paramList);
extern unsigned
_mesa_program_state_value_size(const gl_state_index16 state[STATE_LENGTH]);
extern GLbitfield
_mesa_program_state_flags(const gl_state_index16 state[STATE_LENGTH]);