On Wed, Jun 27, 2012 at 07:17:37PM +0200, Marek Olšák wrote:
> On Wed, Jun 27, 2012 at 5:37 PM, Tom Stellard <tstel...@gmail.com> wrote:
> > Some packets require the shader type bit (bit 1) to be set when
> > used for compute shaders. The pkt_flag will be initialized to
> > RADEON_CP_PACKET3_COMPUTE_MODE for any struct r600_command_buffer used
> > for dispatching compute shaders and it will be or'd against the result of
> > the PKT3 macro when adding a new packet to a strcut r600_command buffer.
> > ---
> > src/gallium/drivers/r600/r600_pipe.h | 19 ++++++++++++++++---
> > 1 files changed, 16 insertions(+), 3 deletions(-)
> >
> > diff --git a/src/gallium/drivers/r600/r600_pipe.h
> > b/src/gallium/drivers/r600/r600_pipe.h
> > index 82c4a12..cd67ee1 100644
> > --- a/src/gallium/drivers/r600/r600_pipe.h
> > +++ b/src/gallium/drivers/r600/r600_pipe.h
> > @@ -68,6 +68,7 @@ struct r600_command_buffer {
> > struct r600_atom atom;
> > uint32_t *buf;
> > unsigned max_num_dw;
> > + unsigned pkt_flags;
> > };
> >
> > struct r600_surface_sync_cmd {
> > @@ -584,19 +585,27 @@ static INLINE void r600_store_config_reg_seq(struct
> > r600_command_buffer *cb, uns
> > cb->buf[cb->atom.num_dw++] = (reg - R600_CONFIG_REG_OFFSET) >> 2;
> > }
> >
> > +/**
> > + * Needs cb->pkt_flags set to RADEON_CP_PACKET3_COMPUTE_MODE for compute
> > + * shaders.
> > + */
> > static INLINE void r600_store_context_reg_seq(struct r600_command_buffer
> > *cb, unsigned reg, unsigned num)
> > {
> > assert(reg >= R600_CONTEXT_REG_OFFSET && reg <
> > R600_CTL_CONST_OFFSET);
> > assert(cb->atom.num_dw+2+num <= cb->max_num_dw);
> > - cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_CONTEXT_REG, num, 0);
> > + cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_CONTEXT_REG, num, 0) |
> > cb->pkt_flags;
> > cb->buf[cb->atom.num_dw++] = (reg - R600_CONTEXT_REG_OFFSET) >> 2;
> > }
> >
> > +/**
> > + * Needs cb->pkt_flags set to RADEON_CP_PACKET3_COMPUTE_MODE for compute
> > + * shaders.
> > + */
> > static INLINE void r600_store_ctl_const_seq(struct r600_command_buffer
> > *cb, unsigned reg, unsigned num)
> > {
> > assert(reg >= R600_CTL_CONST_OFFSET);
> > assert(cb->atom.num_dw+2+num <= cb->max_num_dw);
> > - cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_CTL_CONST, num, 0);
> > + cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_CTL_CONST, num, 0) |
> > cb->pkt_flags;
> > cb->buf[cb->atom.num_dw++] = (reg - R600_CTL_CONST_OFFSET) >> 2;
> > }
> >
> > @@ -608,11 +617,15 @@ static INLINE void r600_store_loop_const_seq(struct
> > r600_command_buffer *cb, uns
> > cb->buf[cb->atom.num_dw++] = (reg - R600_LOOP_CONST_OFFSET) >> 2;
> > }
> >
> > +/**
> > + * Needs cb->pkt_flags set to RADEON_CP_PACKET3_COMPUTE_MODE for compute
> > + * shaders.
> > + */
> > static INLINE void eg_store_loop_const_seq(struct r600_command_buffer *cb,
> > unsigned reg, unsigned num)
> > {
> > assert(reg >= EG_LOOP_CONST_OFFSET);
> > assert(cb->atom.num_dw+2+num <= cb->max_num_dw);
> > - cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_LOOP_CONST, num, 0);
> > + cb->buf[cb->atom.num_dw++] = PKT3(PKT3_SET_LOOP_CONST, num, 0) |
> > cb->pkt_flags;
> > cb->buf[cb->atom.num_dw++] = (reg - EG_LOOP_CONST_OFFSET) >> 2;
> > }
>
> There are also other functions that emit PKT3. Are those not used by
> compute or they just don't need the shader type bit set that you didn't
> update them too?
>
> Other than that:
> Reviewed-by: Marek Olšák <mar...@gmail.com>
>
The compute bit is not needed for PKT3_SET_CONFIG_REG packets, and the
r600_write_*_reg functions aren't currently used for compute. I wanted
to limit the impact on the 3D code, so I didn't update these functions.
-Tom
> Marek
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