src/gallium/drivers/freedreno/a3xx/fd3_draw.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2013 Rob Clark <robclark@freedesktop.org>
   5  *
   6  * Permission is hereby granted, free of charge, to any person obtaining a
   7  * copy of this software and associated documentation files (the "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
  21  * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
  22  * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Authors:
  26  *    Rob Clark <robclark@freedesktop.org>
  27  */
  28
  29 #include "pipe/p_state.h"
  30 #include "util/u_string.h"
  31 #include "util/u_memory.h"
  32 #include "util/u_prim.h"
  33
  34 #include "freedreno_state.h"
  35 #include "freedreno_resource.h"
  36
  37 #include "fd3_draw.h"
  38 #include "fd3_context.h"
  39 #include "fd3_emit.h"
  40 #include "fd3_program.h"
  41 #include "fd3_util.h"
  42 #include "fd3_zsa.h"
  43
  44
  45 static void
  46 emit_vertexbufs(struct fd_context *ctx)
  47 {
  48         struct fd_vertex_stateobj *vtx = ctx->vtx;
  49         struct fd_vertexbuf_stateobj *vertexbuf = &ctx->vertexbuf;
  50         struct fd3_vertex_buf bufs[PIPE_MAX_ATTRIBS];
  51         unsigned i;
  52
  53         if (!vtx->num_elements)
  54                 return;
  55
  56         for (i = 0; i < vtx->num_elements; i++) {
  57                 struct pipe_vertex_element *elem = &vtx->pipe[i];
  58                 struct pipe_vertex_buffer *vb =
  59                                 &vertexbuf->vb[elem->vertex_buffer_index];
  60                 bufs[i].offset = vb->buffer_offset + elem->src_offset;
  61                 bufs[i].stride = vb->stride;
  62                 bufs[i].prsc   = vb->buffer;
  63                 bufs[i].format = elem->src_format;
  64         }
  65
  66         fd3_emit_vertex_bufs(ctx->ring, &ctx->prog, bufs, vtx->num_elements);
  67 }
  68
  69 static void
  70 fd3_draw(struct fd_context *ctx, const struct pipe_draw_info *info)
  71 {
  72         struct fd_ringbuffer *ring = ctx->ring;
  73         unsigned dirty = ctx->dirty;
  74
  75         fd3_emit_state(ctx, dirty);
  76
  77         if (dirty & FD_DIRTY_VTXBUF)
  78                 emit_vertexbufs(ctx);
  79
  80         OUT_PKT0(ring, REG_A3XX_PC_VERTEX_REUSE_BLOCK_CNTL, 1);
  81         OUT_RING(ring, 0x0000000b);                  /* PC_VERTEX_REUSE_BLOCK_CNTL */
  82
  83         OUT_WFI (ring);
  84
  85         OUT_PKT0(ring, REG_A3XX_VFD_INDEX_MIN, 4);
  86         OUT_RING(ring, info->min_index);        /* VFD_INDEX_MIN */
  87         OUT_RING(ring, info->max_index);        /* VFD_INDEX_MAX */
  88         OUT_RING(ring, info->start_instance);   /* VFD_INSTANCEID_OFFSET */
  89         OUT_RING(ring, info->start);            /* VFD_INDEX_OFFSET */
  90
  91         OUT_PKT0(ring, REG_A3XX_PC_RESTART_INDEX, 1);
  92         OUT_RING(ring, info->primitive_restart ? /* PC_RESTART_INDEX */
  93                         info->restart_index : 0xffffffff);
  94
  95         fd_draw_emit(ctx, info);
  96 }
  97
  98 static void
  99 fd3_clear(struct fd_context *ctx, unsigned buffers,
 100                 const union pipe_color_union *color, double depth, unsigned stencil)
 101 {
 102         struct fd3_context *fd3_ctx = fd3_context(ctx);
 103         struct fd_ringbuffer *ring = ctx->ring;
 104         unsigned ce, i;
 105
 106         /* emit generic state now: */
 107         fd3_emit_state(ctx, ctx->dirty & (FD_DIRTY_VIEWPORT |
 108                         FD_DIRTY_FRAMEBUFFER | FD_DIRTY_SCISSOR));
 109
 110         OUT_PKT0(ring, REG_A3XX_RB_BLEND_ALPHA, 1);
 111         OUT_RING(ring, A3XX_RB_BLEND_ALPHA_UINT(0xff) |
 112                         A3XX_RB_BLEND_ALPHA_FLOAT(1.0));
 113
 114         fd3_emit_rbrc_draw_state(ring,
 115                         A3XX_RB_RENDER_CONTROL_ALPHA_TEST_FUNC(FUNC_NEVER));
 116
 117         if (buffers & PIPE_CLEAR_DEPTH) {
 118                 OUT_PKT0(ring, REG_A3XX_RB_DEPTH_CONTROL, 1);
 119                 OUT_RING(ring, A3XX_RB_DEPTH_CONTROL_Z_WRITE_ENABLE |
 120                                 A3XX_RB_DEPTH_CONTROL_Z_ENABLE |
 121                                 A3XX_RB_DEPTH_CONTROL_ZFUNC(FUNC_ALWAYS));
 122
 123                 OUT_PKT0(ring, REG_A3XX_GRAS_CL_VPORT_ZOFFSET, 2);
 124                 OUT_RING(ring, A3XX_GRAS_CL_VPORT_ZOFFSET(0.0));
 125                 OUT_RING(ring, A3XX_GRAS_CL_VPORT_ZSCALE(depth));
 126                 ctx->dirty |= FD_DIRTY_VIEWPORT;
 127         } else {
 128                 OUT_PKT0(ring, REG_A3XX_RB_DEPTH_CONTROL, 1);
 129                 OUT_RING(ring, A3XX_RB_DEPTH_CONTROL_ZFUNC(FUNC_NEVER));
 130         }
 131
 132         if (buffers & PIPE_CLEAR_STENCIL) {
 133                 OUT_PKT0(ring, REG_A3XX_RB_STENCILREFMASK, 2);
 134                 OUT_RING(ring, A3XX_RB_STENCILREFMASK_STENCILREF(stencil) |
 135                                 A3XX_RB_STENCILREFMASK_STENCILMASK(stencil) |
 136                                 A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(0xff));
 137                 OUT_RING(ring, A3XX_RB_STENCILREFMASK_STENCILREF(0) |
 138                                 A3XX_RB_STENCILREFMASK_STENCILMASK(0) |
 139                                 0xff000000 | // XXX ???
 140                                 A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(0xff));
 141
 142                 OUT_PKT0(ring, REG_A3XX_RB_STENCIL_CONTROL, 1);
 143                 OUT_RING(ring, A3XX_RB_STENCIL_CONTROL_STENCIL_ENABLE |
 144                                 A3XX_RB_STENCIL_CONTROL_FUNC(FUNC_ALWAYS) |
 145                                 A3XX_RB_STENCIL_CONTROL_FAIL(STENCIL_KEEP) |
 146                                 A3XX_RB_STENCIL_CONTROL_ZPASS(STENCIL_REPLACE) |
 147                                 A3XX_RB_STENCIL_CONTROL_ZFAIL(STENCIL_KEEP) |
 148                                 A3XX_RB_STENCIL_CONTROL_FUNC_BF(FUNC_NEVER) |
 149                                 A3XX_RB_STENCIL_CONTROL_FAIL_BF(STENCIL_KEEP) |
 150                                 A3XX_RB_STENCIL_CONTROL_ZPASS_BF(STENCIL_KEEP) |
 151                                 A3XX_RB_STENCIL_CONTROL_ZFAIL_BF(STENCIL_KEEP));
 152         } else {
 153                 OUT_PKT0(ring, REG_A3XX_RB_STENCILREFMASK, 2);
 154                 OUT_RING(ring, A3XX_RB_STENCILREFMASK_STENCILREF(0) |
 155                                 A3XX_RB_STENCILREFMASK_STENCILMASK(0) |
 156                                 A3XX_RB_STENCILREFMASK_STENCILWRITEMASK(0));
 157                 OUT_RING(ring, A3XX_RB_STENCILREFMASK_BF_STENCILREF(0) |
 158                                 A3XX_RB_STENCILREFMASK_BF_STENCILMASK(0) |
 159                                 A3XX_RB_STENCILREFMASK_BF_STENCILWRITEMASK(0));
 160
 161                 OUT_PKT0(ring, REG_A3XX_RB_STENCIL_CONTROL, 1);
 162                 OUT_RING(ring, A3XX_RB_STENCIL_CONTROL_FUNC(FUNC_NEVER) |
 163                                 A3XX_RB_STENCIL_CONTROL_FAIL(STENCIL_KEEP) |
 164                                 A3XX_RB_STENCIL_CONTROL_ZPASS(STENCIL_KEEP) |
 165                                 A3XX_RB_STENCIL_CONTROL_ZFAIL(STENCIL_KEEP) |
 166                                 A3XX_RB_STENCIL_CONTROL_FUNC_BF(FUNC_NEVER) |
 167                                 A3XX_RB_STENCIL_CONTROL_FAIL_BF(STENCIL_KEEP) |
 168                                 A3XX_RB_STENCIL_CONTROL_ZPASS_BF(STENCIL_KEEP) |
 169                                 A3XX_RB_STENCIL_CONTROL_ZFAIL_BF(STENCIL_KEEP));
 170         }
 171
 172         if (buffers & PIPE_CLEAR_COLOR) {
 173                 ce = 0xf;
 174         } else {
 175                 ce = 0x0;
 176         }
 177
 178         for (i = 0; i < 4; i++) {
 179                 OUT_PKT0(ring, REG_A3XX_RB_MRT_CONTROL(i), 1);
 180                 OUT_RING(ring, A3XX_RB_MRT_CONTROL_ROP_CODE(12) |
 181                                 A3XX_RB_MRT_CONTROL_DITHER_MODE(DITHER_ALWAYS) |
 182                                 A3XX_RB_MRT_CONTROL_COMPONENT_ENABLE(ce));
 183
 184                 OUT_PKT0(ring, REG_A3XX_RB_MRT_BLEND_CONTROL(i), 1);
 185                 OUT_RING(ring, A3XX_RB_MRT_BLEND_CONTROL_RGB_SRC_FACTOR(FACTOR_ONE) |
 186                                 A3XX_RB_MRT_BLEND_CONTROL_RGB_BLEND_OPCODE(BLEND_DST_PLUS_SRC) |
 187                                 A3XX_RB_MRT_BLEND_CONTROL_RGB_DEST_FACTOR(FACTOR_ZERO) |
 188                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_SRC_FACTOR(FACTOR_ONE) |
 189                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_BLEND_OPCODE(BLEND_DST_PLUS_SRC) |
 190                                 A3XX_RB_MRT_BLEND_CONTROL_ALPHA_DEST_FACTOR(FACTOR_ZERO) |
 191                                 A3XX_RB_MRT_BLEND_CONTROL_CLAMP_ENABLE);
 192         }
 193
 194         OUT_PKT0(ring, REG_A3XX_GRAS_SU_MODE_CONTROL, 1);
 195         OUT_RING(ring, A3XX_GRAS_SU_MODE_CONTROL_LINEHALFWIDTH(0));
 196
 197         fd3_program_emit(ring, &ctx->solid_prog);
 198
 199         fd3_emit_vertex_bufs(ring, &ctx->solid_prog, (struct fd3_vertex_buf[]) {
 200                         { .prsc = fd3_ctx->solid_vbuf, .stride = 12, .format = PIPE_FORMAT_R32G32B32_FLOAT },
 201                 }, 1);
 202
 203         fd3_emit_constant(ring, SB_FRAG_SHADER, 0, 0, 4, color->ui, NULL);
 204
 205         OUT_PKT0(ring, REG_A3XX_PC_PRIM_VTX_CNTL, 1);
 206         OUT_RING(ring, A3XX_PC_PRIM_VTX_CNTL_STRIDE_IN_VPC(0) |
 207                         A3XX_PC_PRIM_VTX_CNTL_POLYMODE_FRONT_PTYPE(PC_DRAW_TRIANGLES) |
 208                         A3XX_PC_PRIM_VTX_CNTL_POLYMODE_BACK_PTYPE(PC_DRAW_TRIANGLES) |
 209                         A3XX_PC_PRIM_VTX_CNTL_PROVOKING_VTX_LAST);
 210         OUT_PKT0(ring, REG_A3XX_VFD_INDEX_MIN, 4);
 211         OUT_RING(ring, 0);            /* VFD_INDEX_MIN */
 212         OUT_RING(ring, 2);            /* VFD_INDEX_MAX */
 213         OUT_RING(ring, 0);            /* VFD_INSTANCEID_OFFSET */
 214         OUT_RING(ring, 0);            /* VFD_INDEX_OFFSET */
 215         OUT_PKT0(ring, REG_A3XX_PC_RESTART_INDEX, 1);
 216         OUT_RING(ring, 0xffffffff);   /* PC_RESTART_INDEX */
 217
 218         OUT_PKT3(ring, CP_EVENT_WRITE, 1);
 219         OUT_RING(ring, PERFCOUNTER_STOP);
 220
 221         fd_draw(ctx, DI_PT_RECTLIST, DI_SRC_SEL_AUTO_INDEX, 2,
 222                         INDEX_SIZE_IGN, 0, 0, NULL);
 223
 224         OUT_WFI (ring);
 225 }
 226
 227 void
 228 fd3_draw_init(struct pipe_context *pctx)
 229 {
 230         struct fd_context *ctx = fd_context(pctx);
 231         ctx->draw = fd3_draw;
 232         ctx->clear = fd3_clear;
 233 }