/* * Copyright 2009 Marek Olšák * * Permission is hereby granted, free of charge, to any person obtaining a * copy of this software and associated documentation files (the "Software"), * to deal in the Software without restriction, including without limitation * on the rights to use, copy, modify, merge, publish, distribute, sub * license, and/or sell copies of the Software, and to permit persons to whom * the Software is furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice (including the next * paragraph) shall be included in all copies or substantial portions of the * Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM, * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE * USE OR OTHER DEALINGS IN THE SOFTWARE. */ #include "r300_context.h" #include "r300_emit.h" #include "r300_texture.h" #include "util/u_format.h" #include "util/u_pack_color.h" #include "util/u_surface.h" enum r300_blitter_op /* bitmask */ { R300_CLEAR = 1, R300_CLEAR_SURFACE = 2, R300_COPY = 4 }; static void r300_blitter_begin(struct r300_context* r300, enum r300_blitter_op op) { if (r300->query_current) { r300->blitter_saved_query = r300->query_current; r300_stop_query(r300); } /* Yeah we have to save all those states to ensure the blitter operation * is really transparent. The states will be restored by the blitter once * copying is done. */ util_blitter_save_blend(r300->blitter, r300->blend_state.state); util_blitter_save_depth_stencil_alpha(r300->blitter, r300->dsa_state.state); util_blitter_save_stencil_ref(r300->blitter, &(r300->stencil_ref)); util_blitter_save_rasterizer(r300->blitter, r300->rs_state.state); util_blitter_save_fragment_shader(r300->blitter, r300->fs.state); util_blitter_save_vertex_shader(r300->blitter, r300->vs_state.state); util_blitter_save_viewport(r300->blitter, &r300->viewport); util_blitter_save_clip(r300->blitter, (struct pipe_clip_state*)r300->clip_state.state); util_blitter_save_vertex_elements(r300->blitter, r300->velems); util_blitter_save_vertex_buffers(r300->blitter, r300->vbuf_mgr->nr_vertex_buffers, r300->vbuf_mgr->vertex_buffer); if (op & (R300_CLEAR_SURFACE | R300_COPY)) { util_blitter_save_framebuffer(r300->blitter, r300->fb_state.state); } if (op & R300_COPY) { struct r300_textures_state* state = (struct r300_textures_state*)r300->textures_state.state; util_blitter_save_fragment_sampler_states( r300->blitter, state->sampler_state_count, (void**)state->sampler_states); util_blitter_save_fragment_sampler_views( r300->blitter, state->sampler_view_count, (struct pipe_sampler_view**)state->sampler_views); } } static void r300_blitter_end(struct r300_context *r300) { if (r300->blitter_saved_query) { r300_resume_query(r300, r300->blitter_saved_query); r300->blitter_saved_query = NULL; } } static uint32_t r300_depth_clear_cb_value(enum pipe_format format, const float* rgba) { union util_color uc; util_pack_color(rgba, format, &uc); if (util_format_get_blocksizebits(format) == 32) return uc.ui; else return uc.us | (uc.us << 16); } static boolean r300_cbzb_clear_allowed(struct r300_context *r300, unsigned clear_buffers) { struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; /* Only color clear allowed, and only one colorbuffer. */ if (clear_buffers != PIPE_CLEAR_COLOR || fb->nr_cbufs != 1) return FALSE; return r300_surface(fb->cbufs[0])->cbzb_allowed; } static boolean r300_fast_zclear_allowed(struct r300_context *r300) { struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; return r300_resource(fb->zsbuf->texture)->tex.zmask_dwords[fb->zsbuf->u.tex.level] != 0; } static boolean r300_hiz_clear_allowed(struct r300_context *r300) { struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; return r300_resource(fb->zsbuf->texture)->tex.hiz_dwords[fb->zsbuf->u.tex.level] != 0; } static uint32_t r300_depth_clear_value(enum pipe_format format, double depth, unsigned stencil) { switch (format) { case PIPE_FORMAT_Z16_UNORM: case PIPE_FORMAT_X8Z24_UNORM: return util_pack_z(format, depth); case PIPE_FORMAT_S8_USCALED_Z24_UNORM: return util_pack_z_stencil(format, depth, stencil); default: assert(0); return 0; } } static uint32_t r300_hiz_clear_value(double depth) { uint32_t r = (uint32_t)(CLAMP(depth, 0, 1) * 255.5); assert(r <= 255); return r | (r << 8) | (r << 16) | (r << 24); } /* Clear currently bound buffers. */ static void r300_clear(struct pipe_context* pipe, unsigned buffers, const float* rgba, double depth, unsigned stencil) { /* My notes about Zbuffer compression: * * 1) The zbuffer must be micro-tiled and whole microtiles must be * written if compression is enabled. If microtiling is disabled, * it locks up. * * 2) There is ZMASK RAM which contains a compressed zbuffer. * Each dword of the Z Mask contains compression information * for 16 4x4 pixel tiles, that is 2 bits for each tile. * On chips with 2 Z pipes, every other dword maps to a different * pipe. On newer chipsets, there is a new compression mode * with 8x8 pixel tiles per 2 bits. * * 3) The FASTFILL bit has nothing to do with filling. It only tells hw * it should look in the ZMASK RAM first before fetching from a real * zbuffer. * * 4) If a pixel is in a cleared state, ZB_DEPTHCLEARVALUE is returned * during zbuffer reads instead of the value that is actually stored * in the zbuffer memory. A pixel is in a cleared state when its ZMASK * is equal to 0. Therefore, if you clear ZMASK with zeros, you may * leave the zbuffer memory uninitialized, but then you must enable * compression, so that the ZMASK RAM is actually used. * * 5) Each 4x4 (or 8x8) tile is automatically decompressed and recompressed * during zbuffer updates. A special decompressing operation should be * used to fully decompress a zbuffer, which basically just stores all * compressed tiles in ZMASK to the zbuffer memory. * * 6) For a 16-bit zbuffer, compression causes a hung with one or * two samples and should not be used. * * 7) FORCE_COMPRESSED_STENCIL_VALUE should be enabled for stencil clears * to avoid needless decompression. * * 8) Fastfill must not be used if reading of compressed Z data is disabled * and writing of compressed Z data is enabled (RD/WR_COMP_ENABLE), * i.e. it cannot be used to compress the zbuffer. * * 9) ZB_CB_CLEAR does not interact with zbuffer compression in any way. * * - Marek */ struct r300_context* r300 = r300_context(pipe); struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; struct r300_hyperz_state *hyperz = (struct r300_hyperz_state*)r300->hyperz_state.state; uint32_t width = fb->width; uint32_t height = fb->height; uint32_t hyperz_dcv = hyperz->zb_depthclearvalue; /* Enable fast Z clear. * The zbuffer must be in micro-tiled mode, otherwise it locks up. */ if (buffers & PIPE_CLEAR_DEPTHSTENCIL) { boolean zmask_clear, hiz_clear; zmask_clear = r300_fast_zclear_allowed(r300); hiz_clear = r300_hiz_clear_allowed(r300); /* If we need Hyper-Z. */ if (zmask_clear || hiz_clear) { r300->num_z_clears++; /* Try to obtain the access to Hyper-Z buffers if we don't have one. */ if (!r300->hyperz_enabled) { r300->hyperz_enabled = r300->rws->cs_request_feature(r300->cs, RADEON_FID_HYPERZ_RAM_ACCESS, TRUE); if (r300->hyperz_enabled) { /* Need to emit HyperZ buffer regs for the first time. */ r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG); } } /* Setup Hyper-Z clears. */ if (r300->hyperz_enabled) { DBG(r300, DBG_HYPERZ, "r300: Clear memory: %s%s\n", zmask_clear ? "ZMASK " : "", hiz_clear ? "HIZ" : ""); if (zmask_clear) { hyperz_dcv = hyperz->zb_depthclearvalue = r300_depth_clear_value(fb->zsbuf->format, depth, stencil); r300_mark_atom_dirty(r300, &r300->zmask_clear); buffers &= ~PIPE_CLEAR_DEPTHSTENCIL; } if (hiz_clear) { r300->hiz_clear_value = r300_hiz_clear_value(depth); r300_mark_atom_dirty(r300, &r300->hiz_clear); } } } } /* Enable CBZB clear. */ if (r300_cbzb_clear_allowed(r300, buffers)) { struct r300_surface *surf = r300_surface(fb->cbufs[0]); hyperz->zb_depthclearvalue = r300_depth_clear_cb_value(surf->base.format, rgba); width = surf->cbzb_width; height = surf->cbzb_height; r300->cbzb_clear = TRUE; r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG); } /* Clear. */ if (buffers) { /* Clear using the blitter. */ r300_blitter_begin(r300, R300_CLEAR); util_blitter_clear(r300->blitter, width, height, fb->nr_cbufs, buffers, rgba, depth, stencil); r300_blitter_end(r300); } else if (r300->zmask_clear.dirty || r300->hiz_clear.dirty) { /* Just clear zmask and hiz now, this does not use the standard draw * procedure. */ /* Calculate zmask_clear and hiz_clear atom sizes. */ unsigned dwords = (r300->zmask_clear.dirty ? r300->zmask_clear.size : 0) + (r300->hiz_clear.dirty ? r300->hiz_clear.size : 0) + r300_get_num_cs_end_dwords(r300); /* Reserve CS space. */ if (dwords > (RADEON_MAX_CMDBUF_DWORDS - r300->cs->cdw)) { r300_flush(&r300->context, RADEON_FLUSH_ASYNC, NULL); } /* Emit clear packets. */ if (r300->zmask_clear.dirty) { r300_emit_zmask_clear(r300, r300->zmask_clear.size, r300->zmask_clear.state); r300->zmask_clear.dirty = FALSE; } if (r300->hiz_clear.dirty) { r300_emit_hiz_clear(r300, r300->hiz_clear.size, r300->hiz_clear.state); r300->hiz_clear.dirty = FALSE; } } else { assert(0); } /* Disable CBZB clear. */ if (r300->cbzb_clear) { r300->cbzb_clear = FALSE; hyperz->zb_depthclearvalue = hyperz_dcv; r300_mark_fb_state_dirty(r300, R300_CHANGED_HYPERZ_FLAG); } /* Enable fastfill and/or hiz. * * If we cleared zmask/hiz, it's in use now. The Hyper-Z state update * looks if zmask/hiz is in use and programs hardware accordingly. */ if (r300->zmask_in_use || r300->hiz_in_use) { r300_mark_atom_dirty(r300, &r300->hyperz_state); } } /* Clear a region of a color surface to a constant value. */ static void r300_clear_render_target(struct pipe_context *pipe, struct pipe_surface *dst, const float *rgba, unsigned dstx, unsigned dsty, unsigned width, unsigned height) { struct r300_context *r300 = r300_context(pipe); r300_blitter_begin(r300, R300_CLEAR_SURFACE); util_blitter_clear_render_target(r300->blitter, dst, rgba, dstx, dsty, width, height); r300_blitter_end(r300); } /* Clear a region of a depth stencil surface. */ static void r300_clear_depth_stencil(struct pipe_context *pipe, struct pipe_surface *dst, unsigned clear_flags, double depth, unsigned stencil, unsigned dstx, unsigned dsty, unsigned width, unsigned height) { struct r300_context *r300 = r300_context(pipe); struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; if (r300->zmask_in_use && !r300->locked_zbuffer) { if (fb->zsbuf->texture == dst->texture) { r300_decompress_zmask(r300); } } /* XXX Do not decompress ZMask of the currently-set zbuffer. */ r300_blitter_begin(r300, R300_CLEAR_SURFACE); util_blitter_clear_depth_stencil(r300->blitter, dst, clear_flags, depth, stencil, dstx, dsty, width, height); r300_blitter_end(r300); } void r300_decompress_zmask(struct r300_context *r300) { struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; if (!r300->zmask_in_use || r300->locked_zbuffer) return; r300->zmask_decompress = TRUE; r300_mark_atom_dirty(r300, &r300->hyperz_state); r300_blitter_begin(r300, R300_CLEAR); util_blitter_clear_depth_custom(r300->blitter, fb->width, fb->height, 0, r300->dsa_decompress_zmask); r300_blitter_end(r300); r300->zmask_decompress = FALSE; r300->zmask_in_use = FALSE; r300_mark_atom_dirty(r300, &r300->hyperz_state); } void r300_decompress_zmask_locked_unsafe(struct r300_context *r300) { struct pipe_framebuffer_state fb = {0}; fb.width = r300->locked_zbuffer->width; fb.height = r300->locked_zbuffer->height; fb.nr_cbufs = 0; fb.zsbuf = r300->locked_zbuffer; r300->context.set_framebuffer_state(&r300->context, &fb); r300_decompress_zmask(r300); } void r300_decompress_zmask_locked(struct r300_context *r300) { struct pipe_framebuffer_state saved_fb = {0}; util_copy_framebuffer_state(&saved_fb, r300->fb_state.state); r300_decompress_zmask_locked_unsafe(r300); r300->context.set_framebuffer_state(&r300->context, &saved_fb); util_unreference_framebuffer_state(&saved_fb); pipe_surface_reference(&r300->locked_zbuffer, NULL); } /* Copy a block of pixels from one surface to another using HW. */ static void r300_hw_copy_region(struct pipe_context* pipe, struct pipe_resource *dst, unsigned dst_level, unsigned dstx, unsigned dsty, unsigned dstz, struct pipe_resource *src, unsigned src_level, const struct pipe_box *src_box) { struct r300_context* r300 = r300_context(pipe); r300_blitter_begin(r300, R300_COPY); util_blitter_copy_region(r300->blitter, dst, dst_level, dstx, dsty, dstz, src, src_level, src_box, TRUE); r300_blitter_end(r300); } /* Copy a block of pixels from one surface to another. */ static void r300_resource_copy_region(struct pipe_context *pipe, struct pipe_resource *dst, unsigned dst_level, unsigned dstx, unsigned dsty, unsigned dstz, struct pipe_resource *src, unsigned src_level, const struct pipe_box *src_box) { struct r300_context *r300 = r300_context(pipe); struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; struct pipe_resource old_src = *src; struct pipe_resource old_dst = *dst; struct pipe_resource new_src = old_src; struct pipe_resource new_dst = old_dst; const struct util_format_description *desc = util_format_description(dst->format); struct pipe_box box; /* Fallback for buffers. */ if (dst->target == PIPE_BUFFER && src->target == PIPE_BUFFER) { util_resource_copy_region(pipe, dst, dst_level, dstx, dsty, dstz, src, src_level, src_box); return; } if (r300->zmask_in_use && !r300->locked_zbuffer) { if (fb->zsbuf->texture == src || fb->zsbuf->texture == dst) { r300_decompress_zmask(r300); } } /* Handle non-renderable plain formats. */ if (desc->layout == UTIL_FORMAT_LAYOUT_PLAIN && (desc->colorspace == UTIL_FORMAT_COLORSPACE_SRGB || !pipe->screen->is_format_supported(pipe->screen, src->format, src->target, src->nr_samples, PIPE_BIND_SAMPLER_VIEW) || !pipe->screen->is_format_supported(pipe->screen, dst->format, dst->target, dst->nr_samples, PIPE_BIND_RENDER_TARGET))) { switch (util_format_get_blocksize(old_dst.format)) { case 1: new_dst.format = PIPE_FORMAT_I8_UNORM; break; case 2: new_dst.format = PIPE_FORMAT_B4G4R4A4_UNORM; break; case 4: new_dst.format = PIPE_FORMAT_B8G8R8A8_UNORM; break; case 8: new_dst.format = PIPE_FORMAT_R16G16B16A16_UNORM; break; default: debug_printf("r300: surface_copy: Unhandled format: %s. Falling back to software.\n" "r300: surface_copy: Software fallback doesn't work for tiled textures.\n", util_format_short_name(dst->format)); } new_src.format = new_dst.format; } /* Handle compressed formats. */ if (desc->layout == UTIL_FORMAT_LAYOUT_S3TC || desc->layout == UTIL_FORMAT_LAYOUT_RGTC) { switch (util_format_get_blocksize(old_dst.format)) { case 8: /* 1 pixel = 4 bits, * we set 1 pixel = 2 bytes ===> 4 times larger pixels. */ new_dst.format = PIPE_FORMAT_B4G4R4A4_UNORM; break; case 16: /* 1 pixel = 8 bits, * we set 1 pixel = 4 bytes ===> 4 times larger pixels. */ new_dst.format = PIPE_FORMAT_B8G8R8A8_UNORM; break; } /* Since the pixels are 4 times larger, we must decrease * the image size and the coordinates 4 times. */ new_src.format = new_dst.format; new_dst.height0 = (new_dst.height0 + 3) / 4; new_src.height0 = (new_src.height0 + 3) / 4; dsty /= 4; box = *src_box; box.y /= 4; box.height = (box.height + 3) / 4; src_box = &box; } if (old_src.format != new_src.format) r300_resource_set_properties(pipe->screen, src, 0, &new_src); if (old_dst.format != new_dst.format) r300_resource_set_properties(pipe->screen, dst, 0, &new_dst); r300_hw_copy_region(pipe, dst, dst_level, dstx, dsty, dstz, src, src_level, src_box); if (old_src.format != new_src.format) r300_resource_set_properties(pipe->screen, src, 0, &old_src); if (old_dst.format != new_dst.format) r300_resource_set_properties(pipe->screen, dst, 0, &old_dst); } void r300_init_blit_functions(struct r300_context *r300) { r300->context.clear = r300_clear; r300->context.clear_render_target = r300_clear_render_target; r300->context.clear_depth_stencil = r300_clear_depth_stencil; r300->context.resource_copy_region = r300_resource_copy_region; }