From 3192633d4abe262d413e41feb871fe8deed409d8 Mon Sep 17 00:00:00 2001 From: Jakob Bornecrantz Date: Mon, 16 Nov 2009 19:56:18 +0100 Subject: svga: Add svga driver --- src/gallium/drivers/svga/svga_state.c | 278 ++++++++++++++++++++++++++++++++++ 1 file changed, 278 insertions(+) create mode 100644 src/gallium/drivers/svga/svga_state.c (limited to 'src/gallium/drivers/svga/svga_state.c') diff --git a/src/gallium/drivers/svga/svga_state.c b/src/gallium/drivers/svga/svga_state.c new file mode 100644 index 0000000000..1c21d3acfe --- /dev/null +++ b/src/gallium/drivers/svga/svga_state.c @@ -0,0 +1,278 @@ +/********************************************************** + * Copyright 2008-2009 VMware, Inc. All rights reserved. + * + * 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 the rights to use, copy, + * modify, merge, publish, distribute, sublicense, 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 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 + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS + * 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 "util/u_debug.h" +#include "pipe/p_defines.h" +#include "util/u_memory.h" +#include "draw/draw_context.h" + +#include "svga_context.h" +#include "svga_screen.h" +#include "svga_state.h" +#include "svga_draw.h" +#include "svga_cmd.h" +#include "svga_hw_reg.h" + +/* This is just enough to decide whether we need to use the draw + * module (swtnl) or not. + */ +static const struct svga_tracked_state *need_swtnl_state[] = +{ + &svga_update_need_swvfetch, + &svga_update_need_pipeline, + &svga_update_need_swtnl, + NULL +}; + + +/* Atoms to update hardware state prior to emitting a clear or draw + * packet. + */ +static const struct svga_tracked_state *hw_clear_state[] = +{ + &svga_hw_scissor, + &svga_hw_viewport, + &svga_hw_framebuffer, + NULL +}; + + +/* Atoms to update hardware state prior to emitting a draw packet. + */ +static const struct svga_tracked_state *hw_draw_state[] = +{ + &svga_hw_update_zero_stride, + &svga_hw_fs, + &svga_hw_vs, + &svga_hw_rss, + &svga_hw_tss, + &svga_hw_tss_binding, + &svga_hw_clip_planes, + &svga_hw_vdecl, + &svga_hw_fs_parameters, + &svga_hw_vs_parameters, + NULL +}; + + +static const struct svga_tracked_state *swtnl_draw_state[] = +{ + &svga_update_swtnl_draw, + &svga_update_swtnl_vdecl, + NULL +}; + +/* Flattens the graph of state dependencies. Could swap the positions + * of hw_clear_state and need_swtnl_state without breaking anything. + */ +static const struct svga_tracked_state **state_levels[] = +{ + need_swtnl_state, + hw_clear_state, + hw_draw_state, + swtnl_draw_state +}; + + + +static unsigned check_state( unsigned a, + unsigned b ) +{ + return (a & b); +} + +static void accumulate_state( unsigned *a, + unsigned b ) +{ + *a |= b; +} + + +static void xor_states( unsigned *result, + unsigned a, + unsigned b ) +{ + *result = a ^ b; +} + + + +static int update_state( struct svga_context *svga, + const struct svga_tracked_state *atoms[], + unsigned *state ) +{ + boolean debug = TRUE; + enum pipe_error ret = 0; + unsigned i; + + ret = svga_hwtnl_flush( svga->hwtnl ); + if (ret != 0) + return ret; + + if (debug) { + /* Debug version which enforces various sanity checks on the + * state flags which are generated and checked to help ensure + * state atoms are ordered correctly in the list. + */ + unsigned examined, prev; + + examined = 0; + prev = *state; + + for (i = 0; atoms[i] != NULL; i++) { + unsigned generated; + + assert(atoms[i]->dirty); + assert(atoms[i]->update); + + if (check_state(*state, atoms[i]->dirty)) { + if (0) + debug_printf("update: %s\n", atoms[i]->name); + ret = atoms[i]->update( svga, *state ); + if (ret != 0) + return ret; + } + + /* generated = (prev ^ state) + * if (examined & generated) + * fail; + */ + xor_states(&generated, prev, *state); + if (check_state(examined, generated)) { + debug_printf("state atom %s generated state already examined\n", + atoms[i]->name); + assert(0); + } + + prev = *state; + accumulate_state(&examined, atoms[i]->dirty); + } + } + else { + for (i = 0; atoms[i] != NULL; i++) { + if (check_state(*state, atoms[i]->dirty)) { + ret = atoms[i]->update( svga, *state ); + if (ret != 0) + return ret; + } + } + } + + return 0; +} + + + +int svga_update_state( struct svga_context *svga, + unsigned max_level ) +{ + struct svga_screen *screen = svga_screen(svga->pipe.screen); + int ret = 0; + int i; + + /* Check for updates to bound textures. This can't be done in an + * atom as there is no flag which could provoke this test, and we + * cannot create one. + */ + if (svga->state.texture_timestamp != screen->texture_timestamp) { + svga->state.texture_timestamp = screen->texture_timestamp; + svga->dirty |= SVGA_NEW_TEXTURE; + } + + for (i = 0; i <= max_level; i++) { + svga->dirty |= svga->state.dirty[i]; + + if (svga->dirty) { + ret = update_state( svga, + state_levels[i], + &svga->dirty ); + if (ret != 0) + return ret; + + svga->state.dirty[i] = 0; + } + } + + for (; i < SVGA_STATE_MAX; i++) + svga->state.dirty[i] |= svga->dirty; + + svga->dirty = 0; + return 0; +} + + + + +void svga_update_state_retry( struct svga_context *svga, + unsigned max_level ) +{ + int ret; + + ret = svga_update_state( svga, max_level ); + + if (ret == PIPE_ERROR_OUT_OF_MEMORY) { + svga_context_flush(svga, NULL); + ret = svga_update_state( svga, max_level ); + } + + assert( ret == 0 ); +} + + + +#define EMIT_RS(_rs, _count, _name, _value) \ +do { \ + _rs[_count].state = _name; \ + _rs[_count].uintValue = _value; \ + _count++; \ +} while (0) + + +/* Setup any hardware state which will be constant through the life of + * a context. + */ +enum pipe_error svga_emit_initial_state( struct svga_context *svga ) +{ + SVGA3dRenderState *rs; + unsigned count = 0; + const unsigned COUNT = 2; + enum pipe_error ret; + + ret = SVGA3D_BeginSetRenderState( svga->swc, &rs, COUNT ); + if (ret) + return ret; + + /* Always use D3D style coordinate space as this is the only one + * which is implemented on all backends. + */ + EMIT_RS(rs, count, SVGA3D_RS_COORDINATETYPE, SVGA3D_COORDINATE_LEFTHANDED ); + EMIT_RS(rs, count, SVGA3D_RS_FRONTWINDING, SVGA3D_FRONTWINDING_CW ); + + assert( COUNT == count ); + SVGA_FIFOCommitAll( svga->swc ); + + return 0; + +} -- cgit v1.2.3