src/mesa/drivers/dri/i965/gen6_wm_state.c

   1 /*
   2  * Copyright © 2009 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  * Authors:
  24  *    Eric Anholt <eric@anholt.net>
  25  *
  26  */
  27
  28 #include "brw_context.h"
  29 #include "brw_state.h"
  30 #include "brw_defines.h"
  31 #include "brw_util.h"
  32 #include "brw_wm.h"
  33 #include "program/prog_parameter.h"
  34 #include "program/prog_statevars.h"
  35 #include "intel_batchbuffer.h"
  36
  37 static void
  38 gen6_upload_wm_push_constants(struct brw_context *brw)
  39 {
  40    struct intel_context *intel = &brw->intel;
  41    struct gl_context *ctx = &intel->ctx;
  42    /* BRW_NEW_FRAGMENT_PROGRAM */
  43    const struct brw_fragment_program *fp =
  44       brw_fragment_program_const(brw->fragment_program);
  45
  46    /* Updates the ParameterValues[i] pointers for all parameters of the
  47     * basic type of PROGRAM_STATE_VAR.
  48     */
  49    /* XXX: Should this happen somewhere before to get our state flag set? */
  50    _mesa_load_state_parameters(ctx, fp->program.Base.Parameters);
  51
  52    /* CACHE_NEW_WM_PROG */
  53    if (brw->wm.prog_data->nr_params != 0) {
  54       float *constants;
  55       unsigned int i;
  56
  57       constants = brw_state_batch(brw, AUB_TRACE_WM_CONSTANTS,
  58                                   brw->wm.prog_data->nr_params *
  59                                   sizeof(float),
  60                                   32, &brw->wm.push_const_offset);
  61
  62       for (i = 0; i < brw->wm.prog_data->nr_params; i++) {
  63          constants[i] = convert_param(brw->wm.prog_data->param_convert[i],
  64                                       brw->wm.prog_data->param[i]);
  65       }
  66
  67       if (0) {
  68          printf("WM constants:\n");
  69          for (i = 0; i < brw->wm.prog_data->nr_params; i++) {
  70             if ((i & 7) == 0)
  71                printf("g%d: ", brw->wm.prog_data->first_curbe_grf + i / 8);
  72             printf("%8f ", constants[i]);
  73             if ((i & 7) == 7)
  74                printf("\n");
  75          }
  76          if ((i & 7) != 0)
  77             printf("\n");
  78          printf("\n");
  79       }
  80    }
  81 }
  82
  83 const struct brw_tracked_state gen6_wm_push_constants = {
  84    .dirty = {
  85       .mesa  = _NEW_PROGRAM_CONSTANTS,
  86       .brw   = (BRW_NEW_BATCH |
  87                 BRW_NEW_FRAGMENT_PROGRAM),
  88       .cache = CACHE_NEW_WM_PROG,
  89    },
  90    .emit = gen6_upload_wm_push_constants,
  91 };
  92
  93 static void
  94 upload_wm_state(struct brw_context *brw)
  95 {
  96    struct intel_context *intel = &brw->intel;
  97    struct gl_context *ctx = &intel->ctx;
  98    const struct brw_fragment_program *fp =
  99       brw_fragment_program_const(brw->fragment_program);
 100    uint32_t dw2, dw4, dw5, dw6;
 101    bool multisampled_fbo = false;
 102
 103    /* _NEW_BUFFERS */
 104    if (ctx->DrawBuffer->_ColorDrawBuffers[0])
 105       multisampled_fbo = ctx->DrawBuffer->_ColorDrawBuffers[0]->NumSamples > 0;
 106
 107     /* CACHE_NEW_WM_PROG */
 108    if (brw->wm.prog_data->nr_params == 0) {
 109       /* Disable the push constant buffers. */
 110       BEGIN_BATCH(5);
 111       OUT_BATCH(_3DSTATE_CONSTANT_PS << 16 | (5 - 2));
 112       OUT_BATCH(0);
 113       OUT_BATCH(0);
 114       OUT_BATCH(0);
 115       OUT_BATCH(0);
 116       ADVANCE_BATCH();
 117    } else {
 118       BEGIN_BATCH(5);
 119       OUT_BATCH(_3DSTATE_CONSTANT_PS << 16 |
 120                 GEN6_CONSTANT_BUFFER_0_ENABLE |
 121                 (5 - 2));
 122       /* Pointer to the WM constant buffer.  Covered by the set of
 123        * state flags from gen6_upload_wm_push_constants.
 124        */
 125       OUT_BATCH(brw->wm.push_const_offset +
 126                 ALIGN(brw->wm.prog_data->nr_params,
 127                       brw->wm.prog_data->dispatch_width) / 8 - 1);
 128       OUT_BATCH(0);
 129       OUT_BATCH(0);
 130       OUT_BATCH(0);
 131       ADVANCE_BATCH();
 132    }
 133
 134    dw2 = dw4 = dw5 = dw6 = 0;
 135    dw4 |= GEN6_WM_STATISTICS_ENABLE;
 136    dw5 |= GEN6_WM_LINE_AA_WIDTH_1_0;
 137    dw5 |= GEN6_WM_LINE_END_CAP_AA_WIDTH_0_5;
 138
 139    /* Use ALT floating point mode for ARB fragment programs, because they
 140     * require 0^0 == 1.  Even though _CurrentFragmentProgram is used for
 141     * rendering, CurrentFragmentProgram is used for this check to
 142     * differentiate between the GLSL and non-GLSL cases.
 143     */
 144    if (ctx->Shader.CurrentFragmentProgram == NULL)
 145       dw2 |= GEN6_WM_FLOATING_POINT_MODE_ALT;
 146
 147    /* CACHE_NEW_SAMPLER */
 148    dw2 |= (ALIGN(brw->sampler.count, 4) / 4) << GEN6_WM_SAMPLER_COUNT_SHIFT;
 149    dw4 |= (brw->wm.prog_data->first_curbe_grf <<
 150            GEN6_WM_DISPATCH_START_GRF_SHIFT_0);
 151    dw4 |= (brw->wm.prog_data->first_curbe_grf_16 <<
 152            GEN6_WM_DISPATCH_START_GRF_SHIFT_2);
 153
 154    dw5 |= (brw->max_wm_threads - 1) << GEN6_WM_MAX_THREADS_SHIFT;
 155
 156    /* CACHE_NEW_WM_PROG */
 157    if (brw->wm.prog_data->dispatch_width == 8) {
 158       dw5 |= GEN6_WM_8_DISPATCH_ENABLE;
 159       if (brw->wm.prog_data->prog_offset_16)
 160          dw5 |= GEN6_WM_16_DISPATCH_ENABLE;
 161    } else {
 162       dw5 |= GEN6_WM_16_DISPATCH_ENABLE;
 163    }
 164
 165    /* CACHE_NEW_WM_PROG | _NEW_COLOR */
 166    if (brw->wm.prog_data->dual_src_blend &&
 167        (ctx->Color.BlendEnabled & 1) &&
 168        ctx->Color.Blend[0]._UsesDualSrc) {
 169       dw5 |= GEN6_WM_DUAL_SOURCE_BLEND_ENABLE;
 170    }
 171
 172    /* _NEW_LINE */
 173    if (ctx->Line.StippleFlag)
 174       dw5 |= GEN6_WM_LINE_STIPPLE_ENABLE;
 175
 176    /* _NEW_POLYGON */
 177    if (ctx->Polygon.StippleFlag)
 178       dw5 |= GEN6_WM_POLYGON_STIPPLE_ENABLE;
 179
 180    /* BRW_NEW_FRAGMENT_PROGRAM */
 181    if (fp->program.Base.InputsRead & FRAG_BIT_WPOS)
 182       dw5 |= GEN6_WM_USES_SOURCE_DEPTH | GEN6_WM_USES_SOURCE_W;
 183    if (fp->program.Base.OutputsWritten & BITFIELD64_BIT(FRAG_RESULT_DEPTH))
 184       dw5 |= GEN6_WM_COMPUTED_DEPTH;
 185    /* CACHE_NEW_WM_PROG */
 186    dw6 |= brw->wm.prog_data->barycentric_interp_modes <<
 187       GEN6_WM_BARYCENTRIC_INTERPOLATION_MODE_SHIFT;
 188
 189    /* _NEW_COLOR */
 190    if (fp->program.UsesKill || ctx->Color.AlphaEnabled)
 191       dw5 |= GEN6_WM_KILL_ENABLE;
 192
 193    if (brw_color_buffer_write_enabled(brw) ||
 194        dw5 & (GEN6_WM_KILL_ENABLE | GEN6_WM_COMPUTED_DEPTH)) {
 195       dw5 |= GEN6_WM_DISPATCH_ENABLE;
 196    }
 197
 198    dw6 |= _mesa_bitcount_64(brw->fragment_program->Base.InputsRead) <<
 199       GEN6_WM_NUM_SF_OUTPUTS_SHIFT;
 200    if (multisampled_fbo) {
 201       /* _NEW_MULTISAMPLE */
 202       if (ctx->Multisample.Enabled)
 203          dw6 |= GEN6_WM_MSRAST_ON_PATTERN;
 204       else
 205          dw6 |= GEN6_WM_MSRAST_OFF_PIXEL;
 206       dw6 |= GEN6_WM_MSDISPMODE_PERPIXEL;
 207    } else {
 208       dw6 |= GEN6_WM_MSRAST_OFF_PIXEL;
 209       dw6 |= GEN6_WM_MSDISPMODE_PERSAMPLE;
 210    }
 211
 212    BEGIN_BATCH(9);
 213    OUT_BATCH(_3DSTATE_WM << 16 | (9 - 2));
 214    OUT_BATCH(brw->wm.prog_offset);
 215    OUT_BATCH(dw2);
 216    if (brw->wm.prog_data->total_scratch) {
 217       OUT_RELOC(brw->wm.scratch_bo, I915_GEM_DOMAIN_RENDER, I915_GEM_DOMAIN_RENDER,
 218                 ffs(brw->wm.prog_data->total_scratch) - 11);
 219    } else {
 220       OUT_BATCH(0);
 221    }
 222    OUT_BATCH(dw4);
 223    OUT_BATCH(dw5);
 224    OUT_BATCH(dw6);
 225    OUT_BATCH(0); /* kernel 1 pointer */
 226    /* kernel 2 pointer */
 227    OUT_BATCH(brw->wm.prog_offset + brw->wm.prog_data->prog_offset_16);
 228    ADVANCE_BATCH();
 229 }
 230
 231 const struct brw_tracked_state gen6_wm_state = {
 232    .dirty = {
 233       .mesa  = (_NEW_LINE |
 234                 _NEW_COLOR |
 235                 _NEW_BUFFERS |
 236                 _NEW_PROGRAM_CONSTANTS |
 237                 _NEW_POLYGON |
 238                 _NEW_MULTISAMPLE),
 239       .brw   = (BRW_NEW_FRAGMENT_PROGRAM |
 240                 BRW_NEW_BATCH),
 241       .cache = (CACHE_NEW_SAMPLER |
 242                 CACHE_NEW_WM_PROG)
 243    },
 244    .emit = upload_wm_state,
 245 };