/**********************************************************
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* Copyright 2008-2009 VMware, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person
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* obtaining a copy of this software and associated documentation
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* files (the "Software"), to deal in the Software without
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* restriction, including without limitation the rights to use, copy,
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* modify, merge, publish, distribute, sublicense, and/or sell copies
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* of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be
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* included in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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* BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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* ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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**********************************************************/
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#include "util/u_bitmask.h"
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#include "util/u_debug.h"
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#include "pipe/p_defines.h"
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#include "util/u_memory.h"
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#include "draw/draw_context.h"
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#include "svga_context.h"
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#include "svga_screen.h"
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#include "svga_state.h"
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#include "svga_draw.h"
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#include "svga_cmd.h"
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#include "svga_hw_reg.h"
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/* This is just enough to decide whether we need to use the draw
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* module (swtnl) or not.
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*/
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static const struct svga_tracked_state *need_swtnl_state[] =
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{
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&svga_update_need_swvfetch,
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&svga_update_need_pipeline,
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&svga_update_need_swtnl,
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NULL
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};
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/* Atoms to update hardware state prior to emitting a clear or draw
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* packet.
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*/
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static const struct svga_tracked_state *hw_clear_state[] =
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{
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&svga_hw_scissor,
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&svga_hw_viewport,
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&svga_hw_framebuffer,
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NULL
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};
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/* Atoms to update hardware state prior to emitting a draw packet.
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*/
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static const struct svga_tracked_state *hw_draw_state[] =
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{
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&svga_need_tgsi_transform,
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&svga_hw_fs,
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&svga_hw_gs,
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&svga_hw_vs,
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&svga_hw_rss,
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&svga_hw_sampler, /* VGPU10 */
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&svga_hw_sampler_bindings, /* VGPU10 */
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&svga_hw_tss, /* pre-VGPU10 */
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&svga_hw_tss_binding, /* pre-VGPU10 */
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&svga_hw_clip_planes,
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&svga_hw_vdecl,
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&svga_hw_fs_constants,
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&svga_hw_gs_constants,
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&svga_hw_vs_constants,
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NULL
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};
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static const struct svga_tracked_state *swtnl_draw_state[] =
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{
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&svga_update_swtnl_draw,
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&svga_update_swtnl_vdecl,
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NULL
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};
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/* Flattens the graph of state dependencies. Could swap the positions
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* of hw_clear_state and need_swtnl_state without breaking anything.
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*/
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static const struct svga_tracked_state **state_levels[] =
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{
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need_swtnl_state,
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hw_clear_state,
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hw_draw_state,
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swtnl_draw_state
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};
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static unsigned
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check_state(unsigned a, unsigned b)
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{
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return (a & b);
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}
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static void
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accumulate_state(unsigned *a, unsigned b)
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{
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*a |= b;
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}
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static void
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xor_states(unsigned *result, unsigned a, unsigned b)
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{
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*result = a ^ b;
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}
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static enum pipe_error
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update_state(struct svga_context *svga,
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const struct svga_tracked_state *atoms[],
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unsigned *state)
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{
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#ifdef DEBUG
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boolean debug = TRUE;
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#else
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boolean debug = FALSE;
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#endif
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enum pipe_error ret = PIPE_OK;
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unsigned i;
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ret = svga_hwtnl_flush( svga->hwtnl );
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if (ret != PIPE_OK)
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return ret;
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if (debug) {
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/* Debug version which enforces various sanity checks on the
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* state flags which are generated and checked to help ensure
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* state atoms are ordered correctly in the list.
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*/
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unsigned examined, prev;
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examined = 0;
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prev = *state;
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for (i = 0; atoms[i] != NULL; i++) {
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unsigned generated;
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assert(atoms[i]->dirty);
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assert(atoms[i]->update);
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if (check_state(*state, atoms[i]->dirty)) {
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if (0)
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debug_printf("update: %s\n", atoms[i]->name);
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ret = atoms[i]->update( svga, *state );
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if (ret != PIPE_OK)
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return ret;
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}
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/* generated = (prev ^ state)
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* if (examined & generated)
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* fail;
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*/
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xor_states(&generated, prev, *state);
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if (check_state(examined, generated)) {
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debug_printf("state atom %s generated state already examined\n",
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atoms[i]->name);
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assert(0);
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}
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prev = *state;
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accumulate_state(&examined, atoms[i]->dirty);
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}
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}
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else {
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for (i = 0; atoms[i] != NULL; i++) {
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if (check_state(*state, atoms[i]->dirty)) {
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ret = atoms[i]->update( svga, *state );
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if (ret != PIPE_OK)
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return ret;
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}
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}
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}
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return PIPE_OK;
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}
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enum pipe_error
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svga_update_state(struct svga_context *svga, unsigned max_level)
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{
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struct svga_screen *screen = svga_screen(svga->pipe.screen);
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enum pipe_error ret = PIPE_OK;
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unsigned i;
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SVGA_STATS_TIME_PUSH(screen->sws, SVGA_STATS_TIME_UPDATESTATE);
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/* Check for updates to bound textures. This can't be done in an
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* atom as there is no flag which could provoke this test, and we
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* cannot create one.
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*/
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if (svga->state.texture_timestamp != screen->texture_timestamp) {
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svga->state.texture_timestamp = screen->texture_timestamp;
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svga->dirty |= SVGA_NEW_TEXTURE;
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}
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for (i = 0; i <= max_level; i++) {
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svga->dirty |= svga->state.dirty[i];
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if (svga->dirty) {
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ret = update_state( svga,
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state_levels[i],
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&svga->dirty );
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if (ret != PIPE_OK)
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goto done;
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svga->state.dirty[i] = 0;
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}
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}
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for (; i < SVGA_STATE_MAX; i++)
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svga->state.dirty[i] |= svga->dirty;
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svga->dirty = 0;
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svga->hud.num_validations++;
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done:
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SVGA_STATS_TIME_POP(screen->sws);
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return ret;
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}
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void
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svga_update_state_retry(struct svga_context *svga, unsigned max_level)
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{
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enum pipe_error ret;
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ret = svga_update_state( svga, max_level );
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if (ret == PIPE_ERROR_OUT_OF_MEMORY) {
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svga_context_flush(svga, NULL);
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ret = svga_update_state( svga, max_level );
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}
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assert( ret == PIPE_OK );
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}
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#define EMIT_RS(_rs, _count, _name, _value) \
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do { \
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_rs[_count].state = _name; \
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_rs[_count].uintValue = _value; \
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_count++; \
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} while (0)
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/* Setup any hardware state which will be constant through the life of
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* a context.
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*/
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enum pipe_error
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svga_emit_initial_state(struct svga_context *svga)
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{
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if (svga_have_vgpu10(svga)) {
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SVGA3dRasterizerStateId id = util_bitmask_add(svga->rast_object_id_bm);
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enum pipe_error ret;
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/* XXX preliminary code */
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ret = SVGA3D_vgpu10_DefineRasterizerState(svga->swc,
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id,
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SVGA3D_FILLMODE_FILL,
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SVGA3D_CULL_NONE,
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1, /* frontCounterClockwise */
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0, /* depthBias */
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0.0f, /* depthBiasClamp */
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0.0f, /* slopeScaledDepthBiasClamp */
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0, /* depthClampEnable */
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0, /* scissorEnable */
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0, /* multisampleEnable */
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0, /* aalineEnable */
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1.0f, /* lineWidth */
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0, /* lineStippleEnable */
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0, /* lineStippleFactor */
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0, /* lineStipplePattern */
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0); /* provokingVertexLast */
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assert(ret == PIPE_OK);
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ret = SVGA3D_vgpu10_SetRasterizerState(svga->swc, id);
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return ret;
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}
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else {
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SVGA3dRenderState *rs;
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unsigned count = 0;
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const unsigned COUNT = 2;
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enum pipe_error ret;
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ret = SVGA3D_BeginSetRenderState( svga->swc, &rs, COUNT );
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if (ret != PIPE_OK)
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return ret;
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/* Always use D3D style coordinate space as this is the only one
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* which is implemented on all backends.
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*/
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EMIT_RS(rs, count, SVGA3D_RS_COORDINATETYPE,
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SVGA3D_COORDINATE_LEFTHANDED );
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EMIT_RS(rs, count, SVGA3D_RS_FRONTWINDING, SVGA3D_FRONTWINDING_CW );
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assert( COUNT == count );
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SVGA_FIFOCommitAll( svga->swc );
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return PIPE_OK;
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}
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}
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