src/gallium/drivers/freedreno/freedreno_draw.c

   1 /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
   2
   3 /*
   4  * Copyright (C) 2012 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 #include "util/u_format.h"
  34
  35 #include "freedreno_draw.h"
  36 #include "freedreno_context.h"
  37 #include "freedreno_state.h"
  38 #include "freedreno_resource.h"
  39 #include "freedreno_util.h"
  40
  41
  42 static enum pc_di_primtype
  43 mode2primtype(unsigned mode)
  44 {
  45         switch (mode) {
  46         case PIPE_PRIM_POINTS:         return DI_PT_POINTLIST;
  47         case PIPE_PRIM_LINES:          return DI_PT_LINELIST;
  48         case PIPE_PRIM_LINE_STRIP:     return DI_PT_LINESTRIP;
  49         case PIPE_PRIM_TRIANGLES:      return DI_PT_TRILIST;
  50         case PIPE_PRIM_TRIANGLE_STRIP: return DI_PT_TRISTRIP;
  51         case PIPE_PRIM_TRIANGLE_FAN:   return DI_PT_TRIFAN;
  52         case PIPE_PRIM_QUADS:          return DI_PT_QUADLIST;
  53         case PIPE_PRIM_QUAD_STRIP:     return DI_PT_QUADSTRIP;
  54         case PIPE_PRIM_POLYGON:        return DI_PT_POLYGON;
  55         }
  56         DBG("unsupported mode: (%s) %d", u_prim_name(mode), mode);
  57         assert(0);
  58         return DI_PT_NONE;
  59 }
  60
  61 static enum pc_di_index_size
  62 size2indextype(unsigned index_size)
  63 {
  64         switch (index_size) {
  65         case 1: return INDEX_SIZE_8_BIT;
  66         case 2: return INDEX_SIZE_16_BIT;
  67         case 4: return INDEX_SIZE_32_BIT;
  68         }
  69         DBG("unsupported index size: %d", index_size);
  70         assert(0);
  71         return INDEX_SIZE_IGN;
  72 }
  73
  74 /* this is same for a2xx/a3xx, so split into helper: */
  75 void
  76 fd_draw_emit(struct fd_context *ctx, const struct pipe_draw_info *info)
  77 {
  78         struct fd_ringbuffer *ring = ctx->ring;
  79         struct pipe_index_buffer *idx = &ctx->indexbuf;
  80         struct fd_bo *idx_bo = NULL;
  81         enum pc_di_index_size idx_type = INDEX_SIZE_IGN;
  82         enum pc_di_src_sel src_sel;
  83         uint32_t idx_size, idx_offset;
  84
  85         if (info->indexed) {
  86                 assert(!idx->user_buffer);
  87
  88                 idx_bo = fd_resource(idx->buffer)->bo;
  89                 idx_type = size2indextype(idx->index_size);
  90                 idx_size = idx->index_size * info->count;
  91                 idx_offset = idx->offset;
  92                 src_sel = DI_SRC_SEL_DMA;
  93         } else {
  94                 idx_bo = NULL;
  95                 idx_type = INDEX_SIZE_IGN;
  96                 idx_size = 0;
  97                 idx_offset = 0;
  98                 src_sel = DI_SRC_SEL_AUTO_INDEX;
  99         }
 100
 101         OUT_PKT3(ring, CP_DRAW_INDX, info->indexed ? 5 : 3);
 102         OUT_RING(ring, 0x00000000);        /* viz query info. */
 103         OUT_RING(ring, DRAW(mode2primtype(info->mode),
 104                         src_sel, idx_type, IGNORE_VISIBILITY));
 105         OUT_RING(ring, info->count);       /* NumIndices */
 106         if (info->indexed) {
 107                 OUT_RELOC(ring, idx_bo, idx_offset, 0);
 108                 OUT_RING (ring, idx_size);
 109         }
 110 }
 111
 112 static void
 113 fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
 114 {
 115         struct fd_context *ctx = fd_context(pctx);
 116         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 117         unsigned buffers;
 118
 119         /* if we supported transform feedback, we'd have to disable this: */
 120         if (((ctx->scissor.maxx - ctx->scissor.minx) *
 121                         (ctx->scissor.maxy - ctx->scissor.miny)) == 0) {
 122                 return;
 123         }
 124
 125         ctx->needs_flush = true;
 126
 127         fd_resource(pfb->cbufs[0]->texture)->dirty = true;
 128
 129         /* figure out the buffers we need: */
 130         buffers = FD_BUFFER_COLOR;
 131         if (fd_depth_enabled(ctx)) {
 132                 buffers |= FD_BUFFER_DEPTH;
 133                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 134         }
 135         if (fd_stencil_enabled(ctx)) {
 136                 buffers |= FD_BUFFER_STENCIL;
 137                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 138         }
 139
 140         /* any buffers that haven't been cleared, we need to restore: */
 141         ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
 142         /* and any buffers used, need to be resolved: */
 143         ctx->resolve |= buffers;
 144
 145         ctx->draw(ctx, info);
 146 }
 147
 148 /* TODO figure out how to make better use of existing state mechanism
 149  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 150  * track of what state really actually changes, and (b) reduce the code
 151  * in the a2xx/a3xx parts.
 152  */
 153
 154 static void
 155 fd_clear(struct pipe_context *pctx, unsigned buffers,
 156                 const union pipe_color_union *color, double depth, unsigned stencil)
 157 {
 158         struct fd_context *ctx = fd_context(pctx);
 159         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 160
 161         ctx->cleared |= buffers;
 162         ctx->resolve |= buffers;
 163         ctx->needs_flush = true;
 164
 165         if (buffers & PIPE_CLEAR_COLOR)
 166                 fd_resource(pfb->cbufs[0]->texture)->dirty = true;
 167
 168         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL))
 169                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 170
 171         DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
 172                         util_format_name(pfb->cbufs[0]->format),
 173                         pfb->zsbuf ? util_format_name(pfb->zsbuf->format) : "none");
 174
 175         ctx->clear(ctx, buffers, color, depth, stencil);
 176
 177         ctx->dirty |= FD_DIRTY_ZSA |
 178                         FD_DIRTY_RASTERIZER |
 179                         FD_DIRTY_SAMPLE_MASK |
 180                         FD_DIRTY_PROG |
 181                         FD_DIRTY_CONSTBUF |
 182                         FD_DIRTY_BLEND;
 183
 184         if (fd_mesa_debug & FD_DBG_DCLEAR)
 185                 ctx->dirty = 0xffffffff;
 186 }
 187
 188 static void
 189 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 190                 const union pipe_color_union *color,
 191                 unsigned x, unsigned y, unsigned w, unsigned h)
 192 {
 193         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 194 }
 195
 196 static void
 197 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 198                 unsigned buffers, double depth, unsigned stencil,
 199                 unsigned x, unsigned y, unsigned w, unsigned h)
 200 {
 201         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 202                         buffers, depth, stencil, x, y, w, h);
 203 }
 204
 205 void
 206 fd_draw_init(struct pipe_context *pctx)
 207 {
 208         pctx->draw_vbo = fd_draw_vbo;
 209         pctx->clear = fd_clear;
 210         pctx->clear_render_target = fd_clear_render_target;
 211         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 212 }