On 30 June 2012 11:50, Olivier Galibert <galibert at pobox.com> wrote:
> At that point, all interpolation piglit tests involving fixed clipping
> work as long as there's no noperspective.
>
> Signed-off-by: Olivier Galibert <galibert at pobox.com>
> ---
> src/mesa/drivers/dri/i965/brw_clip.c | 10 ++++-
> src/mesa/drivers/dri/i965/brw_clip.h | 6 +--
> src/mesa/drivers/dri/i965/brw_clip_line.c | 6 +--
> src/mesa/drivers/dri/i965/brw_clip_tri.c | 20 ++++-----
> src/mesa/drivers/dri/i965/brw_clip_unfilled.c | 2 +-
> src/mesa/drivers/dri/i965/brw_clip_util.c | 56
> +++++++------------------
> 6 files changed, 41 insertions(+), 59 deletions(-)
>
> diff --git a/src/mesa/drivers/dri/i965/brw_clip.c
> b/src/mesa/drivers/dri/i965/brw_clip.c
> index 52e8c47..952eb4a 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip.c
> @@ -215,7 +215,7 @@ brw_upload_clip_prog(struct brw_context *brw)
> struct intel_context *intel = &brw->intel;
> struct gl_context *ctx = &intel->ctx;
> struct brw_clip_prog_key key;
> -
> + int i;
> memset(&key, 0, sizeof(key));
>
> brw_lookup_interpolation(brw);
> @@ -227,7 +227,13 @@ brw_upload_clip_prog(struct brw_context *brw)
> /* CACHE_NEW_VS_PROG (also part of VUE map) */
> key.attrs = brw->vs.prog_data->outputs_written;
> /* _NEW_LIGHT */
> - key.do_flat_shading = (ctx->Light.ShadeModel == GL_FLAT);
> + key.has_flat_shading = 0;
> + for (i = 0; i < BRW_VERT_RESULT_MAX; i++) {
> + if (brw_get_interpolation_mode(brw, i) == INTERP_QUALIFIER_FLAT) {
> + key.has_flat_shading = 1;
> + break;
> + }
> + }
> key.pv_first = (ctx->Light.ProvokingVertex ==
> GL_FIRST_VERTEX_CONVENTION);
> brw_copy_interpolation_modes(brw, key.interpolation_mode);
> /* _NEW_TRANSFORM (also part of VUE map)*/
> diff --git a/src/mesa/drivers/dri/i965/brw_clip.h
> b/src/mesa/drivers/dri/i965/brw_clip.h
> index 6f811ae..0ea0394 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip.h
> +++ b/src/mesa/drivers/dri/i965/brw_clip.h
> @@ -46,7 +46,7 @@ struct brw_clip_prog_key {
> GLbitfield64 interpolation_mode[2]; /* copy of the main context */
> GLuint primitive:4;
> GLuint nr_userclip:4;
> - GLuint do_flat_shading:1;
> + GLuint has_flat_shading:1;
> GLuint pv_first:1;
> GLuint do_unfilled:1;
> GLuint fill_cw:2; /* includes cull information */
> @@ -166,8 +166,8 @@ void brw_clip_kill_thread(struct brw_clip_compile *c);
> struct brw_reg brw_clip_plane_stride( struct brw_clip_compile *c );
> struct brw_reg brw_clip_plane0_address( struct brw_clip_compile *c );
>
> -void brw_clip_copy_colors( struct brw_clip_compile *c,
> - GLuint to, GLuint from );
> +void brw_clip_copy_flatshaded_attributes( struct brw_clip_compile *c,
> + GLuint to, GLuint from );
>
> void brw_clip_init_clipmask( struct brw_clip_compile *c );
>
> diff --git a/src/mesa/drivers/dri/i965/brw_clip_line.c
> b/src/mesa/drivers/dri/i965/brw_clip_line.c
> index 6cf2bd2..729d8c0 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip_line.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip_line.c
> @@ -271,11 +271,11 @@ void brw_emit_line_clip( struct brw_clip_compile *c )
> brw_clip_line_alloc_regs(c);
> brw_clip_init_ff_sync(c);
>
> - if (c->key.do_flat_shading) {
> + if (c->key.has_flat_shading) {
> if (c->key.pv_first)
> - brw_clip_copy_colors(c, 1, 0);
> + brw_clip_copy_flatshaded_attributes(c, 1, 0);
> else
> - brw_clip_copy_colors(c, 0, 1);
> + brw_clip_copy_flatshaded_attributes(c, 0, 1);
> }
>
> clip_and_emit_line(c);
> diff --git a/src/mesa/drivers/dri/i965/brw_clip_tri.c
> b/src/mesa/drivers/dri/i965/brw_clip_tri.c
> index a29f8e0..71225f5 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip_tri.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip_tri.c
> @@ -187,8 +187,8 @@ void brw_clip_tri_flat_shade( struct brw_clip_compile
> *c )
>
> brw_IF(p, BRW_EXECUTE_1);
> {
> - brw_clip_copy_colors(c, 1, 0);
> - brw_clip_copy_colors(c, 2, 0);
> + brw_clip_copy_flatshaded_attributes(c, 1, 0);
> + brw_clip_copy_flatshaded_attributes(c, 2, 0);
> }
> brw_ELSE(p);
> {
> @@ -200,19 +200,19 @@ void brw_clip_tri_flat_shade( struct
> brw_clip_compile *c )
> brw_imm_ud(_3DPRIM_TRIFAN));
> brw_IF(p, BRW_EXECUTE_1);
> {
> - brw_clip_copy_colors(c, 0, 1);
> - brw_clip_copy_colors(c, 2, 1);
> + brw_clip_copy_flatshaded_attributes(c, 0, 1);
> + brw_clip_copy_flatshaded_attributes(c, 2, 1);
> }
> brw_ELSE(p);
> {
> - brw_clip_copy_colors(c, 1, 0);
> - brw_clip_copy_colors(c, 2, 0);
> + brw_clip_copy_flatshaded_attributes(c, 1, 0);
> + brw_clip_copy_flatshaded_attributes(c, 2, 0);
> }
> brw_ENDIF(p);
> }
> else {
> - brw_clip_copy_colors(c, 0, 2);
> - brw_clip_copy_colors(c, 1, 2);
> + brw_clip_copy_flatshaded_attributes(c, 0, 2);
> + brw_clip_copy_flatshaded_attributes(c, 1, 2);
> }
> }
> brw_ENDIF(p);
> @@ -606,8 +606,8 @@ void brw_emit_tri_clip( struct brw_clip_compile *c )
> * flatshading, need to apply the flatshade here because we don't
> * respect the PV when converting to trifan for emit:
> */
> - if (c->key.do_flat_shading)
> - brw_clip_tri_flat_shade(c);
> + if (c->key.has_flat_shading)
> + brw_clip_tri_flat_shade(c);
>
> if ((c->key.clip_mode == BRW_CLIPMODE_NORMAL) ||
> (c->key.clip_mode == BRW_CLIPMODE_KERNEL_CLIP))
> diff --git a/src/mesa/drivers/dri/i965/brw_clip_unfilled.c
> b/src/mesa/drivers/dri/i965/brw_clip_unfilled.c
> index 03c7d42..96f9a84 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip_unfilled.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip_unfilled.c
> @@ -502,7 +502,7 @@ void brw_emit_unfilled_clip( struct brw_clip_compile
> *c )
>
> /* Need to do this whether we clip or not:
> */
> - if (c->key.do_flat_shading)
> + if (c->key.has_flat_shading)
> brw_clip_tri_flat_shade(c);
>
> brw_clip_init_clipmask(c);
> diff --git a/src/mesa/drivers/dri/i965/brw_clip_util.c
> b/src/mesa/drivers/dri/i965/brw_clip_util.c
> index bf8cc3a..7b0205a 100644
> --- a/src/mesa/drivers/dri/i965/brw_clip_util.c
> +++ b/src/mesa/drivers/dri/i965/brw_clip_util.c
> @@ -165,7 +165,7 @@ void brw_clip_interp_vertex( struct brw_clip_compile
> *c,
> vert_result == VERT_RESULT_CLIP_DIST1) {
> /* PSIZ doesn't need interpolation because it isn't used by the
> * fragment shader. CLIP_DIST0 and CLIP_DIST1 don't need
> - * intepolation because on pre-GEN6, these are just placeholder
> VUE
> + * interpolation because on pre-GEN6, these are just placeholder
> VUE
>
Heh. Thanks for fixing my typo :)
> * slots that don't perform any action.
> */
> } else if (vert_result < VERT_RESULT_MAX) {
> @@ -291,49 +291,25 @@ struct brw_reg brw_clip_plane_stride( struct
> brw_clip_compile *c )
> }
>
>
> -/* If flatshading, distribute color from provoking vertex prior to
> +/* Distribute flatshaded attributes from provoking vertex prior to
> * clipping.
> */
> -void brw_clip_copy_colors( struct brw_clip_compile *c,
> - GLuint to, GLuint from )
> +void brw_clip_copy_flatshaded_attributes( struct brw_clip_compile *c,
> + GLuint to, GLuint from )
> {
> struct brw_compile *p = &c->func;
> -
> - if (brw_clip_have_vert_result(c, VERT_RESULT_COL0))
> - brw_MOV(p,
> - byte_offset(c->reg.vertex[to],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_COL0)),
> - byte_offset(c->reg.vertex[from],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_COL0)));
> -
> - if (brw_clip_have_vert_result(c, VERT_RESULT_COL1))
> - brw_MOV(p,
> - byte_offset(c->reg.vertex[to],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_COL1)),
> - byte_offset(c->reg.vertex[from],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_COL1)));
> -
> - if (brw_clip_have_vert_result(c, VERT_RESULT_BFC0))
> - brw_MOV(p,
> - byte_offset(c->reg.vertex[to],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_BFC0)),
> - byte_offset(c->reg.vertex[from],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_BFC0)));
> -
> - if (brw_clip_have_vert_result(c, VERT_RESULT_BFC1))
> - brw_MOV(p,
> - byte_offset(c->reg.vertex[to],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_BFC1)),
> - byte_offset(c->reg.vertex[from],
> - brw_vert_result_to_offset(&c->vue_map,
> - VERT_RESULT_BFC1)));
> + struct brw_context *brw = p->brw;
> + GLuint i;
> +
> + for (i = 0; i < BRW_VERT_RESULT_MAX; i++) {
> + if (brw_get_interpolation_mode(brw, i) == INTERP_QUALIFIER_FLAT) {
> + brw_MOV(p,
> + byte_offset(c->reg.vertex[to],
> + brw_vue_slot_to_offset(i)),
> + byte_offset(c->reg.vertex[from],
> + brw_vue_slot_to_offset(i)));
> + }
> + }
> }
>
Ah, a loop! This is so much better. Thanks.
>
>
> --
> 1.7.10.rc3.1.gb306
>
> _______________________________________________
> mesa-dev mailing list
> mesa-dev at lists.freedesktop.org
> http://lists.freedesktop.org/mailman/listinfo/mesa-dev
>
This patch is:
Reviewed-by: Paul Berry <stereotype441 at gmail.com>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/intel-gfx/attachments/20120717/70f74d4c/attachment.html>
