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_derived.c | 28 +++++++++++++++++++++++++-- 1 file changed, 26 insertions(+), 2 deletions(-) (limited to 'src/gallium/drivers/r300/r300_state_derived.c') diff --git a/src/gallium/drivers/r300/r300_state_derived.c b/src/gallium/drivers/r300/r300_state_derived.c index 95be7849f8..de4c271328 100644 --- a/src/gallium/drivers/r300/r300_state_derived.c +++ b/src/gallium/drivers/r300/r300_state_derived.c @@ -862,11 +862,35 @@ static void r300_merge_textures_and_samplers(struct r300_context* r300) } } -void r300_update_derived_state(struct r300_context* r300) +static void r300_decompress_depth_textures(struct r300_context *r300) { - r300_flush_depth_textures(r300); + struct r300_textures_state *state = + (struct r300_textures_state*)r300->textures_state.state; + struct pipe_resource *tex; + unsigned count = MIN2(state->sampler_view_count, + state->sampler_state_count); + unsigned i; + + if (!r300->zmask_locked || !r300->locked_zbuffer) { + return; + } + + for (i = 0; i < count; i++) { + if (state->sampler_views[i] && state->sampler_states[i]) { + tex = state->sampler_views[i]->base.texture; + if (tex == r300->locked_zbuffer->texture) { + r300_decompress_zmask_locked(r300); + return; + } + } + } +} + +void r300_update_derived_state(struct r300_context* r300) +{ if (r300->textures_state.dirty) { + r300_decompress_depth_textures(r300); r300_merge_textures_and_samplers(r300); } -- cgit v1.2.3