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mesa: expose alpha-ref as a state-variable

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Reviewed-by: Marek Olšák <marek.olsak@amd.com>
This commit is contained in:
Erik Faye-Lund 2019-07-04 10:07:27 +02:00
parent cce3ad166a
commit fdc4450c28
2 changed files with 11 additions and 0 deletions
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10
src/mesa/program/prog_statevars.c
View file

@ -602,6 +602,10 @@ _mesa_fetch_state(struct gl_context *ctx, const gl_state_index16 state[],
ctx->Color.BlendEnabled, ctx->Color._AdvancedBlendMode);
return;
case STATE_ALPHA_REF:
value[0] = ctx->Color.AlphaRefUnclamped;
return;
/* XXX: make sure new tokens added here are also handled in the
* _mesa_program_state_flags() switch, below.
*/
@ -713,6 +717,9 @@ _mesa_program_state_flags(const gl_state_index16 state[STATE_LENGTH])
case STATE_ADVANCED_BLENDING_MODE:
return _NEW_COLOR;
case STATE_ALPHA_REF:
return _NEW_COLOR;
default:
/* unknown state indexes are silently ignored and
* no flag set, since it is handled by the driver.
@ -919,6 +926,9 @@ append_token(char *dst, gl_state_index k)
case STATE_ADVANCED_BLENDING_MODE:
append(dst, "AdvancedBlendingMode");
break;
case STATE_ALPHA_REF:
append(dst, "alphaRef");
break;
default:
/* probably STATE_INTERNAL_DRIVER+i (driver private state) */
append(dst, "driverState");

1
src/mesa/program/prog_statevars.h
View file

@ -129,6 +129,7 @@ typedef enum gl_state_index_ {
* currently active advanced blending equation, or zero if disabled.
*/
STATE_ADVANCED_BLENDING_MODE,
STATE_ALPHA_REF, /* alpha-test reference value */
STATE_INTERNAL_DRIVER /* first available state index for drivers (must be last) */
} gl_state_index;