diff options
| -rw-r--r-- | src/gallium/drivers/radeonsi/si_state_viewport.c | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/src/gallium/drivers/radeonsi/si_state_viewport.c b/src/gallium/drivers/radeonsi/si_state_viewport.c index 76c56447eb0..dac90df1c4f 100644 --- a/src/gallium/drivers/radeonsi/si_state_viewport.c +++ b/src/gallium/drivers/radeonsi/si_state_viewport.c @@ -146,6 +146,8 @@ static void si_emit_one_scissor(struct si_context *ctx, S_028254_BR_Y(final.maxy)); } +#define MAX_PA_SU_HARDWARE_SCREEN_OFFSET 8176 + static void si_emit_guardband(struct si_context *ctx) { const struct si_state_rasterizer *rs = ctx->queued.named.rasterizer; @@ -179,13 +181,12 @@ static void si_emit_guardband(struct si_context *ctx) int hw_screen_offset_x = (vp_as_scissor.maxx + vp_as_scissor.minx) / 2; int hw_screen_offset_y = (vp_as_scissor.maxy + vp_as_scissor.miny) / 2; - const unsigned hw_screen_offset_max = 8176; /* SI-CI need to align the offset to an ubertile consisting of all SEs. */ const unsigned hw_screen_offset_alignment = ctx->chip_class >= VI ? 16 : MAX2(ctx->screen->se_tile_repeat, 16); - hw_screen_offset_x = CLAMP(hw_screen_offset_x, 0, hw_screen_offset_max); - hw_screen_offset_y = CLAMP(hw_screen_offset_y, 0, hw_screen_offset_max); + hw_screen_offset_x = CLAMP(hw_screen_offset_x, 0, MAX_PA_SU_HARDWARE_SCREEN_OFFSET); + hw_screen_offset_y = CLAMP(hw_screen_offset_y, 0, MAX_PA_SU_HARDWARE_SCREEN_OFFSET); /* Align the screen offset by dropping the low bits. */ hw_screen_offset_x &= ~(hw_screen_offset_alignment - 1); @@ -332,6 +333,20 @@ static void si_set_viewport_states(struct pipe_context *pctx, unsigned h = scissor->maxy - scissor->miny; unsigned max_extent = MAX2(w, h); + unsigned center_x = (scissor->maxx + scissor->minx) / 2; + unsigned center_y = (scissor->maxy + scissor->miny) / 2; + unsigned max_center = MAX2(center_x, center_y); + + /* PA_SU_HARDWARE_SCREEN_OFFSET can't center viewports whose + * center start farther than MAX_PA_SU_HARDWARE_SCREEN_OFFSET. + * (for example, a 1x1 viewport in the lower right corner of + * 16Kx16K) Such viewports need a greater guardband, so they + * have to use a worse quantization mode. + */ + unsigned distance_off_center = + MAX2(0, (int)max_center - MAX_PA_SU_HARDWARE_SCREEN_OFFSET); + max_extent += distance_off_center; + /* Determine the best quantization mode (subpixel precision), * but also leave enough space for the guardband. * |