From 4d74432dd3b64814aca7d31fa133d5ee8bce9026 Mon Sep 17 00:00:00 2001 From: =?utf8?q?Nicolai=20H=C3=A4hnle?= Date: Sun, 17 Sep 2017 11:26:53 +0200 Subject: [PATCH] radeonsi: don't discard points and lines MIME-Version: 1.0 Content-Type: text/plain; charset=utf8 Content-Transfer-Encoding: 8bit This is a bit conservative, but a more precise solution requires access to the rasterizer state. This is something to tackle after the fork between r600 and radeonsi. Cc: mesa-stable@lists.freedesktop.org Reviewed-by: Marek Olšák --- src/gallium/drivers/radeon/r600_viewport.c | 21 +++++++++++++++++++-- src/gallium/drivers/radeonsi/si_state_draw.c | 7 +++++++ 2 files changed, 26 insertions(+), 2 deletions(-) diff --git a/src/gallium/drivers/radeon/r600_viewport.c b/src/gallium/drivers/radeon/r600_viewport.c index cf6d5f2..6e4fc9d 100644 --- a/src/gallium/drivers/radeon/r600_viewport.c +++ b/src/gallium/drivers/radeon/r600_viewport.c @@ -165,6 +165,7 @@ static void r600_emit_guardband(struct r600_common_context *rctx, struct radeon_winsys_cs *cs = rctx->gfx.cs; struct pipe_viewport_state vp; float left, top, right, bottom, max_range, guardband_x, guardband_y; + float discard_x, discard_y; /* Reconstruct the viewport transformation from the scissor. */ vp.translate[0] = (vp_as_scissor->minx + vp_as_scissor->maxx) / 2.0; @@ -198,6 +199,22 @@ static void r600_emit_guardband(struct r600_common_context *rctx, guardband_x = MIN2(-left, right); guardband_y = MIN2(-top, bottom); + discard_x = 1.0; + discard_y = 1.0; + + if (rctx->current_rast_prim < PIPE_PRIM_TRIANGLES) { + /* When rendering wide points or lines, we need to be more + * conservative about when to discard them entirely. Since + * point size can be determined by the VS output, we basically + * disable discard completely completely here. + * + * TODO: This can hurt performance when rendering lines and + * points with fixed size, and could be improved. + */ + discard_x = guardband_x; + discard_y = guardband_y; + } + /* If any of the GB registers is updated, all of them must be updated. */ if (rctx->chip_class >= CAYMAN) radeon_set_context_reg_seq(cs, CM_R_028BE8_PA_CL_GB_VERT_CLIP_ADJ, 4); @@ -205,9 +222,9 @@ static void r600_emit_guardband(struct r600_common_context *rctx, radeon_set_context_reg_seq(cs, R600_R_028C0C_PA_CL_GB_VERT_CLIP_ADJ, 4); radeon_emit(cs, fui(guardband_y)); /* R_028BE8_PA_CL_GB_VERT_CLIP_ADJ */ - radeon_emit(cs, fui(1.0)); /* R_028BEC_PA_CL_GB_VERT_DISC_ADJ */ + radeon_emit(cs, fui(discard_y)); /* R_028BEC_PA_CL_GB_VERT_DISC_ADJ */ radeon_emit(cs, fui(guardband_x)); /* R_028BF0_PA_CL_GB_HORZ_CLIP_ADJ */ - radeon_emit(cs, fui(1.0)); /* R_028BF4_PA_CL_GB_HORZ_DISC_ADJ */ + radeon_emit(cs, fui(discard_x)); /* R_028BF4_PA_CL_GB_HORZ_DISC_ADJ */ } static void r600_emit_scissors(struct r600_common_context *rctx, struct r600_atom *atom) diff --git a/src/gallium/drivers/radeonsi/si_state_draw.c b/src/gallium/drivers/radeonsi/si_state_draw.c index e4f592c..fb91d93 100644 --- a/src/gallium/drivers/radeonsi/si_state_draw.c +++ b/src/gallium/drivers/radeonsi/si_state_draw.c @@ -1255,6 +1255,13 @@ void si_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info) rast_prim = info->mode; if (rast_prim != sctx->b.current_rast_prim) { + bool old_is_poly = sctx->b.current_rast_prim >= PIPE_PRIM_TRIANGLES; + bool new_is_poly = rast_prim >= PIPE_PRIM_TRIANGLES; + if (old_is_poly != new_is_poly) { + sctx->b.scissors.dirty_mask = (1 << R600_MAX_VIEWPORTS) - 1; + si_set_atom_dirty(sctx, &sctx->b.scissors.atom, true); + } + sctx->b.current_rast_prim = rast_prim; sctx->do_update_shaders = true; } -- 2.7.4