src/mesa/drivers/dri/i965/brw_gs_surface_state.c

   1 /*
   2  * Copyright © 2013 Intel Corporation
   3  *
   4  * Permission is hereby granted, free of charge, to any person obtaining a
   5  * copy of this software and associated documentation files (the "Software"),
   6  * to deal in the Software without restriction, including without limitation
   7  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   8  * and/or sell copies of the Software, and to permit persons to whom the
   9  * Software is furnished to do so, subject to the following conditions:
  10  *
  11  * The above copyright notice and this permission notice (including the next
  12  * paragraph) shall be included in all copies or substantial portions of the
  13  * Software.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  16  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  17  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  18  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  19  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  20  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  21  * IN THE SOFTWARE.
  22  */
  23
  24 #include "main/mtypes.h"
  25 #include "program/prog_parameter.h"
  26
  27 #include "brw_context.h"
  28 #include "brw_state.h"
  29
  30
  31 /* Creates a new GS constant buffer reflecting the current GS program's
  32  * constants, if needed by the GS program.
  33  *
  34  * Otherwise, constants go through the CURBEs using the brw_constant_buffer
  35  * state atom.
  36  */
  37 static void
  38 brw_upload_gs_pull_constants(struct brw_context *brw)
  39 {
  40    struct brw_stage_state *stage_state = &brw->gs.base;
  41
  42    /* BRW_NEW_GEOMETRY_PROGRAM */
  43    struct brw_geometry_program *gp =
  44       (struct brw_geometry_program *) brw->geometry_program;
  45
  46    if (!gp)
  47       return;
  48
  49    /* CACHE_NEW_GS_PROG */
  50    const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
  51
  52    /* _NEW_PROGRAM_CONSTANTS */
  53    brw_upload_vec4_pull_constants(brw, BRW_NEW_GS_CONSTBUF, &gp->program.Base,
  54                                   stage_state, prog_data);
  55 }
  56
  57 const struct brw_tracked_state brw_gs_pull_constants = {
  58    .dirty = {
  59       .mesa = (_NEW_PROGRAM_CONSTANTS),
  60       .brw = (BRW_NEW_BATCH | BRW_NEW_GEOMETRY_PROGRAM),
  61       .cache = CACHE_NEW_GS_PROG,
  62    },
  63    .emit = brw_upload_gs_pull_constants,
  64 };
  65
  66 static void
  67 brw_upload_gs_ubo_surfaces(struct brw_context *brw)
  68 {
  69    struct gl_context *ctx = &brw->ctx;
  70    struct brw_stage_state *stage_state = &brw->gs.base;
  71
  72    /* _NEW_PROGRAM */
  73    struct gl_shader_program *prog = ctx->Shader.CurrentGeometryProgram;
  74
  75    if (!prog)
  76       return;
  77
  78    brw_upload_ubo_surfaces(brw, prog->_LinkedShaders[MESA_SHADER_GEOMETRY],
  79                            &stage_state->surf_offset[SURF_INDEX_VEC4_UBO(0)]);
  80 }
  81
  82 const struct brw_tracked_state brw_gs_ubo_surfaces = {
  83    .dirty = {
  84       .mesa = _NEW_PROGRAM,
  85       .brw = BRW_NEW_BATCH | BRW_NEW_UNIFORM_BUFFER,
  86       .cache = 0,
  87    },
  88    .emit = brw_upload_gs_ubo_surfaces,
  89 };
  90
  91
  92 /**
  93  * Constructs the binding table for the WM surface state, which maps unit
  94  * numbers to surface state objects.
  95  */
  96 static void
  97 brw_gs_upload_binding_table(struct brw_context *brw)
  98 {
  99    struct brw_stage_state *stage_state = &brw->gs.base;
 100
 101    /* If there's no GS, skip changing anything. */
 102    if (!brw->gs.prog_data)
 103       return;
 104
 105    /* CACHE_NEW_GS_PROG */
 106    const struct brw_vec4_prog_data *prog_data = &brw->gs.prog_data->base;
 107
 108    /* BRW_NEW_SURFACES and BRW_NEW_GS_CONSTBUF */
 109    brw_vec4_upload_binding_table(brw, BRW_NEW_GS_BINDING_TABLE, stage_state,
 110                                  prog_data);
 111 }
 112
 113 const struct brw_tracked_state brw_gs_binding_table = {
 114    .dirty = {
 115       .mesa = 0,
 116       .brw = (BRW_NEW_BATCH |
 117               BRW_NEW_GS_CONSTBUF |
 118               BRW_NEW_SURFACES),
 119       .cache = CACHE_NEW_GS_PROG
 120    },
 121    .emit = brw_gs_upload_binding_table,
 122 };