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i965: Upload HS push constants whenever default tess. levels change.

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When using tessellation on OpenGL without a TCS, default values for
gl_TessLevelOuter/gl_TessLevelInner are provided via the API.

Core Mesa will flag ctx->DriverFlags.NewDefaultTessLevels whenever those
values change.  We add a corresponding BRW_NEW_DEFAULT_TESS_LEVELS flag
and hook it up to HS push constants (which will be used to upload these
default values to the autogenerated TCS).

Signed-off-by: Kenneth Graunke <kenneth@whitecape.org>
Reviewed-by: Jordan Justen <jordan.l.justen@intel.com>
This commit is contained in:
Kenneth Graunke 2015-12-18 03:13:07 -08:00
parent 0d5cb4aef4
commit 239a4bdcd4
3 changed files with 5 additions and 0 deletions
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2
src/mesa/drivers/dri/i965/brw_context.h
View file

@ -191,6 +191,7 @@ enum brw_state_id {
BRW_STATE_BINDING_TABLE_POINTERS,
BRW_STATE_INDICES,
BRW_STATE_VERTICES,
BRW_STATE_DEFAULT_TESS_LEVELS,
BRW_STATE_BATCH,
BRW_STATE_INDEX_BUFFER,
BRW_STATE_VS_CONSTBUF,
@ -273,6 +274,7 @@ enum brw_state_id {
#define BRW_NEW_BINDING_TABLE_POINTERS (1ull << BRW_STATE_BINDING_TABLE_POINTERS)
#define BRW_NEW_INDICES (1ull << BRW_STATE_INDICES)
#define BRW_NEW_VERTICES (1ull << BRW_STATE_VERTICES)
#define BRW_NEW_DEFAULT_TESS_LEVELS (1ull << BRW_STATE_DEFAULT_TESS_LEVELS)
/**
* Used for any batch entry with a relocated pointer that will be used
* by any 3D rendering.

2
src/mesa/drivers/dri/i965/brw_state_upload.c
View file

@ -517,6 +517,7 @@ void brw_init_state( struct brw_context *brw )
ctx->DriverFlags.NewTextureBuffer = BRW_NEW_TEXTURE_BUFFER;
ctx->DriverFlags.NewAtomicBuffer = BRW_NEW_ATOMIC_BUFFER;
ctx->DriverFlags.NewImageUnits = BRW_NEW_IMAGE_UNITS;
ctx->DriverFlags.NewDefaultTessLevels = BRW_NEW_DEFAULT_TESS_LEVELS;
}
@ -619,6 +620,7 @@ static struct dirty_bit_map brw_bits[] = {
DEFINE_BIT(BRW_NEW_BINDING_TABLE_POINTERS),
DEFINE_BIT(BRW_NEW_INDICES),
DEFINE_BIT(BRW_NEW_VERTICES),
DEFINE_BIT(BRW_NEW_DEFAULT_TESS_LEVELS),
DEFINE_BIT(BRW_NEW_BATCH),
DEFINE_BIT(BRW_NEW_INDEX_BUFFER),
DEFINE_BIT(BRW_NEW_VS_CONSTBUF),

1
src/mesa/drivers/dri/i965/gen7_hs_state.c
View file

@ -49,6 +49,7 @@ const struct brw_tracked_state gen7_tcs_push_constants = {
.dirty = {
.mesa = _NEW_PROGRAM_CONSTANTS,
.brw = BRW_NEW_BATCH |
BRW_NEW_DEFAULT_TESS_LEVELS |
BRW_NEW_PUSH_CONSTANT_ALLOCATION |
BRW_NEW_TESS_PROGRAMS |
BRW_NEW_TCS_PROG_DATA,