src/mesa/drivers/dri/i965/gen7_sf_state.c

   1 /*
   2  * Copyright © 2011 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 "brw_context.h"
  25 #include "brw_state.h"
  26 #include "brw_defines.h"
  27 #include "brw_util.h"
  28 #include "main/macros.h"
  29 #include "main/fbobject.h"
  30 #include "main/framebuffer.h"
  31 #include "intel_batchbuffer.h"
  32
  33 static void
  34 upload_sbe_state(struct brw_context *brw)
  35 {
  36    struct gl_context *ctx = &brw->ctx;
  37    /* BRW_NEW_FS_PROG_DATA */
  38    const struct brw_wm_prog_data *wm_prog_data =
  39       brw_wm_prog_data(brw->wm.base.prog_data);
  40    uint32_t num_outputs = wm_prog_data->num_varying_inputs;
  41    uint32_t dw1;
  42    uint32_t point_sprite_enables;
  43    int i;
  44    uint16_t attr_overrides[16];
  45    /* _NEW_BUFFERS */
  46    bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
  47    uint32_t point_sprite_origin;
  48
  49    /* FINISHME: Attribute Swizzle Control Mode? */
  50    dw1 = GEN7_SBE_SWIZZLE_ENABLE | num_outputs << GEN7_SBE_NUM_OUTPUTS_SHIFT;
  51
  52    /* _NEW_POINT
  53     *
  54     * Window coordinates in an FBO are inverted, which means point
  55     * sprite origin must be inverted.
  56     */
  57    if ((ctx->Point.SpriteOrigin == GL_LOWER_LEFT) != render_to_fbo) {
  58       point_sprite_origin = GEN6_SF_POINT_SPRITE_LOWERLEFT;
  59    } else {
  60       point_sprite_origin = GEN6_SF_POINT_SPRITE_UPPERLEFT;
  61    }
  62    dw1 |= point_sprite_origin;
  63
  64    /* _NEW_POINT | _NEW_LIGHT | _NEW_PROGRAM,
  65     * BRW_NEW_FS_PROG_DATA | BRW_NEW_FRAGMENT_PROGRAM |
  66     * BRW_NEW_GS_PROG_DATA | BRW_NEW_PRIMITIVE | BRW_NEW_TES_PROG_DATA |
  67     * BRW_NEW_VUE_MAP_GEOM_OUT
  68     */
  69    uint32_t urb_entry_read_length;
  70    uint32_t urb_entry_read_offset;
  71    calculate_attr_overrides(brw, attr_overrides, &point_sprite_enables,
  72                             &urb_entry_read_length, &urb_entry_read_offset);
  73    dw1 |= urb_entry_read_length << GEN7_SBE_URB_ENTRY_READ_LENGTH_SHIFT |
  74           urb_entry_read_offset << GEN7_SBE_URB_ENTRY_READ_OFFSET_SHIFT;
  75
  76    BEGIN_BATCH(14);
  77    OUT_BATCH(_3DSTATE_SBE << 16 | (14 - 2));
  78    OUT_BATCH(dw1);
  79
  80    /* Output dwords 2 through 9 */
  81    for (i = 0; i < 8; i++) {
  82       OUT_BATCH(attr_overrides[i * 2] | attr_overrides[i * 2 + 1] << 16);
  83    }
  84
  85    OUT_BATCH(point_sprite_enables); /* dw10 */
  86    OUT_BATCH(wm_prog_data->flat_inputs);
  87    OUT_BATCH(0); /* wrapshortest enables 0-7 */
  88    OUT_BATCH(0); /* wrapshortest enables 8-15 */
  89    ADVANCE_BATCH();
  90 }
  91
  92 const struct brw_tracked_state gen7_sbe_state = {
  93    .dirty = {
  94       .mesa  = _NEW_BUFFERS |
  95                _NEW_LIGHT |
  96                _NEW_POINT |
  97                _NEW_POLYGON |
  98                _NEW_PROGRAM,
  99       .brw   = BRW_NEW_BLORP |
 100                BRW_NEW_CONTEXT |
 101                BRW_NEW_FRAGMENT_PROGRAM |
 102                BRW_NEW_FS_PROG_DATA |
 103                BRW_NEW_GS_PROG_DATA |
 104                BRW_NEW_TES_PROG_DATA |
 105                BRW_NEW_PRIMITIVE |
 106                BRW_NEW_VUE_MAP_GEOM_OUT,
 107    },
 108    .emit = upload_sbe_state,
 109 };
 110
 111 static void
 112 upload_sf_state(struct brw_context *brw)
 113 {
 114    struct gl_context *ctx = &brw->ctx;
 115    uint32_t dw1, dw2, dw3;
 116    float point_size;
 117    /* _NEW_BUFFERS */
 118    bool render_to_fbo = _mesa_is_user_fbo(ctx->DrawBuffer);
 119    const bool multisampled_fbo = _mesa_geometric_samples(ctx->DrawBuffer) > 1;
 120
 121    dw1 = GEN6_SF_STATISTICS_ENABLE;
 122
 123    if (brw->sf.viewport_transform_enable)
 124        dw1 |= GEN6_SF_VIEWPORT_TRANSFORM_ENABLE;
 125
 126    /* _NEW_BUFFERS */
 127    dw1 |= (brw_depthbuffer_format(brw) << GEN7_SF_DEPTH_BUFFER_SURFACE_FORMAT_SHIFT);
 128
 129    /* _NEW_POLYGON */
 130    if (ctx->Polygon._FrontBit == render_to_fbo)
 131       dw1 |= GEN6_SF_WINDING_CCW;
 132
 133    if (ctx->Polygon.OffsetFill)
 134        dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_SOLID;
 135
 136    if (ctx->Polygon.OffsetLine)
 137        dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_WIREFRAME;
 138
 139    if (ctx->Polygon.OffsetPoint)
 140        dw1 |= GEN6_SF_GLOBAL_DEPTH_OFFSET_POINT;
 141
 142    switch (ctx->Polygon.FrontMode) {
 143    case GL_FILL:
 144        dw1 |= GEN6_SF_FRONT_SOLID;
 145        break;
 146
 147    case GL_LINE:
 148        dw1 |= GEN6_SF_FRONT_WIREFRAME;
 149        break;
 150
 151    case GL_POINT:
 152        dw1 |= GEN6_SF_FRONT_POINT;
 153        break;
 154
 155    default:
 156        unreachable("not reached");
 157    }
 158
 159    switch (ctx->Polygon.BackMode) {
 160    case GL_FILL:
 161        dw1 |= GEN6_SF_BACK_SOLID;
 162        break;
 163
 164    case GL_LINE:
 165        dw1 |= GEN6_SF_BACK_WIREFRAME;
 166        break;
 167
 168    case GL_POINT:
 169        dw1 |= GEN6_SF_BACK_POINT;
 170        break;
 171
 172    default:
 173        unreachable("not reached");
 174    }
 175
 176    dw2 = 0;
 177
 178    if (ctx->Polygon.CullFlag) {
 179       switch (ctx->Polygon.CullFaceMode) {
 180       case GL_FRONT:
 181          dw2 |= GEN6_SF_CULL_FRONT;
 182          break;
 183       case GL_BACK:
 184          dw2 |= GEN6_SF_CULL_BACK;
 185          break;
 186       case GL_FRONT_AND_BACK:
 187          dw2 |= GEN6_SF_CULL_BOTH;
 188          break;
 189       default:
 190          unreachable("not reached");
 191       }
 192    } else {
 193       dw2 |= GEN6_SF_CULL_NONE;
 194    }
 195
 196    /* _NEW_SCISSOR | _NEW_POLYGON,
 197     * BRW_NEW_GS_PROG_DATA | BRW_NEW_PRIMITIVE | BRW_NEW_TES_PROG_DATA
 198     */
 199    if (ctx->Scissor.EnableFlags ||
 200        brw_is_drawing_points(brw) || brw_is_drawing_lines(brw))
 201       dw2 |= GEN6_SF_SCISSOR_ENABLE;
 202
 203    /* _NEW_LINE */
 204    {
 205       uint32_t line_width_u3_7 = brw_get_line_width(brw);
 206       dw2 |= line_width_u3_7 << GEN6_SF_LINE_WIDTH_SHIFT;
 207    }
 208    if (ctx->Line.SmoothFlag) {
 209       dw2 |= GEN6_SF_LINE_AA_ENABLE;
 210       dw2 |= GEN6_SF_LINE_END_CAP_WIDTH_1_0;
 211    }
 212    if (ctx->Line.StippleFlag && brw->is_haswell) {
 213       dw2 |= HSW_SF_LINE_STIPPLE_ENABLE;
 214    }
 215    /* _NEW_MULTISAMPLE */
 216    if (multisampled_fbo && ctx->Multisample.Enabled)
 217       dw2 |= GEN6_SF_MSRAST_ON_PATTERN;
 218
 219    /* FINISHME: Last Pixel Enable?  Vertex Sub Pixel Precision Select?
 220     */
 221
 222    dw3 = GEN6_SF_LINE_AA_MODE_TRUE;
 223
 224    /* _NEW_PROGRAM | _NEW_POINT, BRW_NEW_VUE_MAP_GEOM_OUT */
 225    if (use_state_point_size(brw))
 226       dw3 |= GEN6_SF_USE_STATE_POINT_WIDTH;
 227
 228    /* _NEW_POINT - Clamp to ARB_point_parameters user limits */
 229    point_size = CLAMP(ctx->Point.Size, ctx->Point.MinSize, ctx->Point.MaxSize);
 230
 231    /* Clamp to the hardware limits and convert to fixed point */
 232    dw3 |= U_FIXED(CLAMP(point_size, 0.125f, 255.875f), 3);
 233
 234    /* _NEW_LIGHT */
 235    if (ctx->Light.ProvokingVertex != GL_FIRST_VERTEX_CONVENTION) {
 236       dw3 |=
 237          (2 << GEN6_SF_TRI_PROVOKE_SHIFT) |
 238          (2 << GEN6_SF_TRIFAN_PROVOKE_SHIFT) |
 239          (1 << GEN6_SF_LINE_PROVOKE_SHIFT);
 240    } else {
 241       dw3 |= (1 << GEN6_SF_TRIFAN_PROVOKE_SHIFT);
 242    }
 243
 244    BEGIN_BATCH(7);
 245    OUT_BATCH(_3DSTATE_SF << 16 | (7 - 2));
 246    OUT_BATCH(dw1);
 247    OUT_BATCH(dw2);
 248    OUT_BATCH(dw3);
 249    OUT_BATCH_F(ctx->Polygon.OffsetUnits * 2); /* constant.  copied from gen4 */
 250    OUT_BATCH_F(ctx->Polygon.OffsetFactor); /* scale */
 251    OUT_BATCH_F(ctx->Polygon.OffsetClamp); /* global depth offset clamp */
 252    ADVANCE_BATCH();
 253 }
 254
 255 const struct brw_tracked_state gen7_sf_state = {
 256    .dirty = {
 257       .mesa  = _NEW_BUFFERS |
 258                _NEW_LIGHT |
 259                _NEW_LINE |
 260                _NEW_MULTISAMPLE |
 261                _NEW_POINT |
 262                _NEW_POLYGON |
 263                _NEW_PROGRAM |
 264                _NEW_SCISSOR,
 265       .brw   = BRW_NEW_BLORP |
 266                BRW_NEW_CONTEXT |
 267                BRW_NEW_GS_PROG_DATA |
 268                BRW_NEW_PRIMITIVE |
 269                BRW_NEW_TES_PROG_DATA |
 270                BRW_NEW_VUE_MAP_GEOM_OUT,
 271    },
 272    .emit = upload_sf_state,
 273 };