src/mesa/state_tracker/st_atom.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 VMware, Inc.
   4  * All Rights Reserved.
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the
   8  * "Software"), to deal in the Software without restriction, including
   9  * without limitation the rights to use, copy, modify, merge, publish,
  10  * distribute, sub license, and/or sell copies of the Software, and to
  11  * permit persons to whom the Software is furnished to do so, subject to
  12  * the following conditions:
  13  *
  14  * The above copyright notice and this permission notice (including the
  15  * next paragraph) shall be included in all copies or substantial portions
  16  * of the Software.
  17  *
  18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
  21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
  22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
  23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
  24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  *
  26  **************************************************************************/
  27
  28
  29 #include <stdio.h>
  30 #include "main/glheader.h"
  31 #include "main/context.h"
  32
  33 #include "pipe/p_defines.h"
  34 #include "st_context.h"
  35 #include "st_atom.h"
  36 #include "st_program.h"
  37 #include "st_manager.h"
  38
  39
  40 /* The list state update functions. */
  41 static const struct st_tracked_state *atoms[] =
  42 {
  43 #define ST_STATE(FLAG, st_update) &st_update,
  44 #include "st_atom_list.h"
  45 #undef ST_STATE
  46 };
  47
  48
  49 void st_init_atoms( struct st_context *st )
  50 {
  51    STATIC_ASSERT(ARRAY_SIZE(atoms) <= 64);
  52 }
  53
  54
  55 void st_destroy_atoms( struct st_context *st )
  56 {
  57    /* no-op */
  58 }
  59
  60
  61 /* Too complex to figure out, just check every time:
  62  */
  63 static void check_program_state( struct st_context *st )
  64 {
  65    struct gl_context *ctx = st->ctx;
  66    struct st_vertex_program *old_vp = st->vp;
  67    struct st_tessctrl_program *old_tcp = st->tcp;
  68    struct st_tesseval_program *old_tep = st->tep;
  69    struct st_geometry_program *old_gp = st->gp;
  70    struct st_fragment_program *old_fp = st->fp;
  71
  72    struct gl_vertex_program *new_vp = ctx->VertexProgram._Current;
  73    struct gl_program *new_tcp = ctx->TessCtrlProgram._Current;
  74    struct gl_program *new_tep = ctx->TessEvalProgram._Current;
  75    struct gl_program *new_gp = ctx->GeometryProgram._Current;
  76    struct gl_fragment_program *new_fp = ctx->FragmentProgram._Current;
  77    uint64_t dirty = 0;
  78
  79    /* Flag states used by both new and old shaders to unbind shader resources
  80     * properly when transitioning to shaders that don't use them.
  81     */
  82    if (unlikely(new_vp != &old_vp->Base)) {
  83       if (old_vp)
  84          dirty |= old_vp->affected_states;
  85       if (new_vp)
  86          dirty |= ST_NEW_VERTEX_PROGRAM(st, st_vertex_program(new_vp));
  87    }
  88
  89    if (unlikely(new_tcp != &old_tcp->Base)) {
  90       if (old_tcp)
  91          dirty |= old_tcp->affected_states;
  92       if (new_tcp)
  93          dirty |= st_tessctrl_program(new_tcp)->affected_states;
  94    }
  95
  96    if (unlikely(new_tep != &old_tep->Base)) {
  97       if (old_tep)
  98          dirty |= old_tep->affected_states;
  99       if (new_tep)
 100          dirty |= st_tesseval_program(new_tep)->affected_states;
 101    }
 102
 103    if (unlikely(new_gp != &old_gp->Base)) {
 104       if (old_gp)
 105          dirty |= old_gp->affected_states;
 106       if (new_gp)
 107          dirty |= st_geometry_program(new_gp)->affected_states;
 108    }
 109
 110    if (unlikely(new_fp != &old_fp->Base)) {
 111       if (old_fp)
 112          dirty |= old_fp->affected_states;
 113       if (new_fp)
 114          dirty |= st_fragment_program(new_fp)->affected_states;
 115    }
 116
 117    st->dirty |= dirty;
 118    st->gfx_shaders_may_be_dirty = false;
 119 }
 120
 121 static void check_attrib_edgeflag(struct st_context *st)
 122 {
 123    const struct gl_client_array **arrays = st->ctx->Array._DrawArrays;
 124    GLboolean vertdata_edgeflags, edgeflag_culls_prims, edgeflags_enabled;
 125    struct gl_vertex_program *vp = st->ctx->VertexProgram._Current;
 126
 127    if (!arrays)
 128       return;
 129
 130    edgeflags_enabled = st->ctx->Polygon.FrontMode != GL_FILL ||
 131                        st->ctx->Polygon.BackMode != GL_FILL;
 132
 133    vertdata_edgeflags = edgeflags_enabled &&
 134                         arrays[VERT_ATTRIB_EDGEFLAG]->StrideB != 0;
 135    if (vertdata_edgeflags != st->vertdata_edgeflags) {
 136       st->vertdata_edgeflags = vertdata_edgeflags;
 137       if (vp)
 138          st->dirty |= ST_NEW_VERTEX_PROGRAM(st, st_vertex_program(vp));
 139    }
 140
 141    edgeflag_culls_prims = edgeflags_enabled && !vertdata_edgeflags &&
 142                           !st->ctx->Current.Attrib[VERT_ATTRIB_EDGEFLAG][0];
 143    if (edgeflag_culls_prims != st->edgeflag_culls_prims) {
 144       st->edgeflag_culls_prims = edgeflag_culls_prims;
 145       st->dirty |= ST_NEW_RASTERIZER;
 146    }
 147 }
 148
 149
 150 /***********************************************************************
 151  * Update all derived state:
 152  */
 153
 154 void st_validate_state( struct st_context *st, enum st_pipeline pipeline )
 155 {
 156    struct gl_context *ctx = st->ctx;
 157    uint64_t dirty, pipeline_mask;
 158    uint32_t dirty_lo, dirty_hi;
 159
 160    /* Get Mesa driver state.
 161     *
 162     * Inactive states are shader states not used by shaders at the moment.
 163     */
 164    st->dirty |= ctx->NewDriverState & st->active_states & ST_ALL_STATES_MASK;
 165    ctx->NewDriverState = 0;
 166
 167    /* Get pipeline state. */
 168    switch (pipeline) {
 169    case ST_PIPELINE_RENDER:
 170       if (st->ctx->API == API_OPENGL_COMPAT)
 171          check_attrib_edgeflag(st);
 172
 173       check_program_state(st);
 174       st_manager_validate_framebuffers(st);
 175
 176       pipeline_mask = ST_PIPELINE_RENDER_STATE_MASK;
 177       break;
 178
 179    case ST_PIPELINE_COMPUTE: {
 180       struct st_compute_program *old_cp = st->cp;
 181       struct gl_compute_program *new_cp = ctx->ComputeProgram._Current;
 182
 183       if (new_cp != &old_cp->Base) {
 184          if (old_cp)
 185             st->dirty |= old_cp->affected_states;
 186          assert(new_cp);
 187          st->dirty |= st_compute_program(new_cp)->affected_states;
 188       }
 189
 190       st->compute_shader_may_be_dirty = false;
 191       pipeline_mask = ST_PIPELINE_COMPUTE_STATE_MASK;
 192       break;
 193    }
 194
 195    default:
 196       unreachable("Invalid pipeline specified");
 197    }
 198
 199    dirty = st->dirty & pipeline_mask;
 200    if (!dirty)
 201       return;
 202
 203    dirty_lo = dirty;
 204    dirty_hi = dirty >> 32;
 205
 206    /* Update states.
 207     *
 208     * Don't use u_bit_scan64, it may be slower on 32-bit.
 209     */
 210    while (dirty_lo)
 211       atoms[u_bit_scan(&dirty_lo)]->update(st);
 212    while (dirty_hi)
 213       atoms[32 + u_bit_scan(&dirty_hi)]->update(st);
 214
 215    /* Clear the render or compute state bits. */
 216    st->dirty &= ~pipeline_mask;
 217 }