From db299a9f8244d53d9041fcdbd396a77ebe1f9e3e Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Tue, 25 Jan 2011 05:37:52 +0100 Subject: r300g: fix some bugs with zbuffer compression (v4) This drops the memblock manager for ZMASK. Instead, only one zbuffer can be compressed at a time. Note that this does not necessarily have to be slower. When there is a large number of zbuffers, compression might be used more often than it was before. It's also easier to debug. How it works: 1) 'clear' turns the compression on. 2) If some other zbuffer is set or the currently-bound zbuffer is used for texturing, the driver decompresses it and then turns the compression off. Notes: - The ZMASK clear has been refactored, so that only one packet3 is used to clear ZMASK. - The 8x8 compression mode is disabled. I couldn't make it work without issues. - Also removed driver-specific stuff from u_blitter. Driver status: - RV530 and R580 appear to just work (finally). - RV570 should work, but there may be an issue that we don't correctly calculate the number of dwords to clear, resulting in a partially uninitialized zbuffer. - RS690 misrenders as if no ZMASK clear happened. No idea what's going on. - RV350 may even hardlock. This issue was already present and this patch doesn't fix it. I think we are still missing some hardware info we need to make the zbuffer compression work fully. Note that there is also an issue with HiZ, resulting in a sort of blocky zigzagged corruption around some objects. --- src/gallium/drivers/r300/r300_state.c | 66 +++++++++++++++++++++-------------- 1 file changed, 40 insertions(+), 26 deletions(-) (limited to 'src/gallium/drivers/r300/r300_state.c') diff --git a/src/gallium/drivers/r300/r300_state.c b/src/gallium/drivers/r300/r300_state.c index 2664c1dc834..ba456d413f6 100644 --- a/src/gallium/drivers/r300/r300_state.c +++ b/src/gallium/drivers/r300/r300_state.c @@ -694,8 +694,7 @@ void r300_mark_fb_state_dirty(struct r300_context *r300, } if (change == R300_CHANGED_FB_STATE || - change == R300_CHANGED_CBZB_FLAG || - change == R300_CHANGED_ZCLEAR_FLAG) { + change == R300_CHANGED_HYPERZ_FLAG) { r300_mark_atom_dirty(r300, &r300->hyperz_state); } @@ -719,8 +718,8 @@ void r300_mark_fb_state_dirty(struct r300_context *r300, } static void - r300_set_framebuffer_state(struct pipe_context* pipe, - const struct pipe_framebuffer_state* state) +r300_set_framebuffer_state(struct pipe_context* pipe, + const struct pipe_framebuffer_state* state) { struct r300_context* r300 = r300_context(pipe); struct r300_aa_state *aa = (struct r300_aa_state*)r300->aa_state.state; @@ -728,7 +727,6 @@ static void boolean can_hyperz = r300->rws->get_value(r300->rws, R300_CAN_HYPERZ); unsigned max_width, max_height, i; uint32_t zbuffer_bpp = 0; - int blocksize; if (r300->screen->caps.is_r500) { max_width = max_height = 4096; @@ -744,6 +742,32 @@ static void return; } + if (old_state->zsbuf && r300->zmask_in_use && !r300->zmask_locked) { + /* There is a zmask in use, what are we gonna do? */ + if (state->zsbuf) { + if (!pipe_surface_equal(old_state->zsbuf, state->zsbuf)) { + /* Decompress the currently bound zbuffer before we bind another one. */ + r300_decompress_zmask(r300); + } + } else { + /* We don't bind another zbuffer, so lock the current one. */ + r300->zmask_locked = TRUE; + pipe_surface_reference(&r300->locked_zbuffer, old_state->zsbuf); + } + } else if (r300->zmask_locked && r300->locked_zbuffer) { + /* We have a locked zbuffer now, what are we gonna do? */ + if (state->zsbuf) { + if (!pipe_surface_equal(r300->locked_zbuffer, state->zsbuf)) { + /* We are binding some other zbuffer, so decompress the locked one, + * it gets unlocked automatically. */ + r300_decompress_zmask_locked_unsafe(r300); + } else { + /* We are binding the locked zbuffer again, so unlock it. */ + r300->zmask_locked = FALSE; + } + } + } + /* If nr_cbufs is changed from zero to non-zero or vice versa... */ if (!!old_state->nr_cbufs != !!state->nr_cbufs) { r300_mark_atom_dirty(r300, &r300->blend_state); @@ -758,14 +782,15 @@ static void util_copy_framebuffer_state(r300->fb_state.state, state); + if (!r300->zmask_locked) { + pipe_surface_reference(&r300->locked_zbuffer, NULL); + } + r300_mark_fb_state_dirty(r300, R300_CHANGED_FB_STATE); r300->validate_buffers = TRUE; - r300->z_compression = false; - if (state->zsbuf) { - blocksize = util_format_get_blocksize(state->zsbuf->texture->format); - switch (blocksize) { + switch (util_format_get_blocksize(state->zsbuf->texture->format)) { case 2: zbuffer_bpp = 16; break; @@ -773,30 +798,19 @@ static void zbuffer_bpp = 24; break; } + + /* Setup Hyper-Z. */ if (can_hyperz) { struct r300_surface *zs_surf = r300_surface(state->zsbuf); - struct r300_texture *tex; - int compress = r300->screen->caps.is_rv350 ? RV350_Z_COMPRESS_88 : R300_Z_COMPRESS_44; + struct r300_texture *tex = r300_texture(zs_surf->base.texture); int level = zs_surf->base.u.tex.level; - tex = r300_texture(zs_surf->base.texture); - /* work out whether we can support hiz on this buffer */ r300_hiz_alloc_block(r300, zs_surf); - - /* work out whether we can support zmask features on this buffer */ - r300_zmask_alloc_block(r300, zs_surf, compress); - - if (tex->zmask_mem[level]) { - /* compression causes hangs on 16-bit */ - if (zbuffer_bpp == 24) - r300->z_compression = compress; - } + DBG(r300, DBG_HYPERZ, - "hyper-z features: hiz: %d @ %08x z-compression: %d z-fastfill: %d @ %08x\n", tex->hiz_mem[level] ? 1 : 0, - tex->hiz_mem[level] ? tex->hiz_mem[level]->ofs : 0xdeadbeef, - r300->z_compression, tex->zmask_mem[level] ? 1 : 0, - tex->zmask_mem[level] ? tex->zmask_mem[level]->ofs : 0xdeadbeef); + "hyper-z features: hiz: %d @ %08x\n", tex->hiz_mem[level] ? 1 : 0, + tex->hiz_mem[level] ? tex->hiz_mem[level]->ofs : 0xdeadbeef); } /* Polygon offset depends on the zbuffer bit depth. */ -- cgit v1.2.3