/* * 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_texture.h" #include "util/u_format.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->vertex_buffer_count, r300->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; } } /* Clear currently bound buffers. */ static void r300_clear(struct pipe_context* pipe, unsigned buffers, const float* rgba, double depth, unsigned stencil) { /* My notes about fastfill: * * 1) Only the zbuffer is cleared. * * 2) The zbuffer must be micro-tiled and whole microtiles must be * written. If microtiling is disabled, it locks up. * * 3) There is Z Mask RAM which contains a compressed zbuffer and * it interacts with fastfill. We should figure out how to use it * to get more performance. * This is what we know about the Z Mask: * * Each dword of the Z Mask contains compression information * for 16 4x4 pixel blocks, that is 2 bits for each block. * On chips with 2 Z pipes, every other dword maps to a different * pipe. * * 4) ZB_DEPTHCLEARVALUE is used to clear the zbuffer and the Z Mask must * be equal to 0. (clear the Z Mask RAM with zeros) * * 5) For 16-bit zbuffer, compression causes a hung with one or * two samples and should not be used. * * 6) FORCE_COMPRESSED_STENCIL_VALUE should be enabled for stencil clears * to avoid needless decompression. * * 7) 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. * * 8) ZB_CB_CLEAR does not interact with fastfill in any way. * * - Marek */ struct r300_context* r300 = r300_context(pipe); struct pipe_framebuffer_state *fb = (struct pipe_framebuffer_state*)r300->fb_state.state; /* Clear. */ r300_blitter_begin(r300, R300_CLEAR); util_blitter_clear(r300->blitter, fb->width, fb->height, fb->nr_cbufs, buffers, rgba, depth, stencil); r300_blitter_end(r300); /* XXX this flush "fixes" a hardlock in the cubestorm xscreensaver */ if (r300->flush_counter == 0) pipe->flush(pipe, 0, NULL); } /* 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); 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); } /* 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, struct pipe_subresource subdst, unsigned dstx, unsigned dsty, unsigned dstz, struct pipe_resource *src, struct pipe_subresource subsrc, unsigned srcx, unsigned srcy, unsigned srcz, unsigned width, unsigned height) { struct r300_context* r300 = r300_context(pipe); r300_blitter_begin(r300, R300_COPY); util_blitter_copy_region(r300->blitter, dst, subdst, dstx, dsty, dstz, src, subsrc, srcx, srcy, srcz, width, height, 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, struct pipe_subresource subdst, unsigned dstx, unsigned dsty, unsigned dstz, struct pipe_resource *src, struct pipe_subresource subsrc, unsigned srcx, unsigned srcy, unsigned srcz, unsigned width, unsigned height) { enum pipe_format old_format = dst->format; enum pipe_format new_format = old_format; if (!pipe->screen->is_format_supported(pipe->screen, old_format, src->target, src->nr_samples, PIPE_BIND_RENDER_TARGET | PIPE_BIND_SAMPLER_VIEW, 0) && util_format_is_plain(old_format)) { switch (util_format_get_blocksize(old_format)) { case 1: new_format = PIPE_FORMAT_I8_UNORM; break; case 2: new_format = PIPE_FORMAT_B4G4R4A4_UNORM; break; case 4: new_format = PIPE_FORMAT_B8G8R8A8_UNORM; break; case 8: new_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(old_format)); } } if (old_format != new_format) { dst->format = new_format; src->format = new_format; r300_texture_reinterpret_format(pipe->screen, dst, new_format); r300_texture_reinterpret_format(pipe->screen, src, new_format); } r300_hw_copy_region(pipe, dst, subdst, dstx, dsty, dstz, src, subsrc, srcx, srcy, srcz, width, height); if (old_format != new_format) { dst->format = old_format; src->format = old_format; r300_texture_reinterpret_format(pipe->screen, dst, old_format); r300_texture_reinterpret_format(pipe->screen, src, old_format); } } 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; }