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_index_size
  43 size2indextype(unsigned index_size)
  44 {
  45         switch (index_size) {
  46         case 1: return INDEX_SIZE_8_BIT;
  47         case 2: return INDEX_SIZE_16_BIT;
  48         case 4: return INDEX_SIZE_32_BIT;
  49         }
  50         DBG("unsupported index size: %d", index_size);
  51         assert(0);
  52         return INDEX_SIZE_IGN;
  53 }
  54
  55 /* this is same for a2xx/a3xx, so split into helper: */
  56 void
  57 fd_draw_emit(struct fd_context *ctx, struct fd_ringbuffer *ring,
  58                 enum pc_di_vis_cull_mode vismode,
  59                 const struct pipe_draw_info *info)
  60 {
  61         struct pipe_index_buffer *idx = &ctx->indexbuf;
  62         struct fd_bo *idx_bo = NULL;
  63         enum pc_di_index_size idx_type = INDEX_SIZE_IGN;
  64         enum pc_di_src_sel src_sel;
  65         uint32_t idx_size, idx_offset;
  66
  67         if (info->indexed) {
  68                 assert(!idx->user_buffer);
  69
  70                 idx_bo = fd_resource(idx->buffer)->bo;
  71                 idx_type = size2indextype(idx->index_size);
  72                 idx_size = idx->index_size * info->count;
  73                 idx_offset = idx->offset;
  74                 src_sel = DI_SRC_SEL_DMA;
  75         } else {
  76                 idx_bo = NULL;
  77                 idx_type = INDEX_SIZE_IGN;
  78                 idx_size = 0;
  79                 idx_offset = 0;
  80                 src_sel = DI_SRC_SEL_AUTO_INDEX;
  81         }
  82
  83         fd_draw(ctx, ring, ctx->primtypes[info->mode], vismode, src_sel,
  84                         info->count, idx_type, idx_size, idx_offset, idx_bo);
  85 }
  86
  87 static void
  88 fd_draw_vbo(struct pipe_context *pctx, const struct pipe_draw_info *info)
  89 {
  90         struct fd_context *ctx = fd_context(pctx);
  91         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
  92         struct pipe_scissor_state *scissor = fd_context_get_scissor(ctx);
  93         unsigned i, buffers = 0;
  94
  95         /* if we supported transform feedback, we'd have to disable this: */
  96         if (((scissor->maxx - scissor->minx) *
  97                         (scissor->maxy - scissor->miny)) == 0) {
  98                 return;
  99         }
 100
 101         /* emulate unsupported primitives: */
 102         if (!fd_supported_prim(ctx, info->mode)) {
 103                 util_primconvert_save_index_buffer(ctx->primconvert, &ctx->indexbuf);
 104                 util_primconvert_save_rasterizer_state(ctx->primconvert, ctx->rasterizer);
 105                 util_primconvert_draw_vbo(ctx->primconvert, info);
 106                 return;
 107         }
 108
 109         ctx->needs_flush = true;
 110
 111         /*
 112          * Figure out the buffers/features we need:
 113          */
 114
 115         if (fd_depth_enabled(ctx)) {
 116                 buffers |= FD_BUFFER_DEPTH;
 117                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 118                 ctx->gmem_reason |= FD_GMEM_DEPTH_ENABLED;
 119         }
 120
 121         if (fd_stencil_enabled(ctx)) {
 122                 buffers |= FD_BUFFER_STENCIL;
 123                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 124                 ctx->gmem_reason |= FD_GMEM_STENCIL_ENABLED;
 125         }
 126
 127         if (fd_logicop_enabled(ctx))
 128                 ctx->gmem_reason |= FD_GMEM_LOGICOP_ENABLED;
 129
 130         for (i = 0; i < pfb->nr_cbufs; i++) {
 131                 struct pipe_resource *surf = pfb->cbufs[i]->texture;
 132
 133                 fd_resource(surf)->dirty = true;
 134                 buffers |= FD_BUFFER_COLOR;
 135
 136                 if (surf->nr_samples > 1)
 137                         ctx->gmem_reason |= FD_GMEM_MSAA_ENABLED;
 138
 139                 if (fd_blend_enabled(ctx, i))
 140                         ctx->gmem_reason |= FD_GMEM_BLEND_ENABLED;
 141         }
 142
 143         ctx->num_draws++;
 144
 145         /* any buffers that haven't been cleared, we need to restore: */
 146         ctx->restore |= buffers & (FD_BUFFER_ALL & ~ctx->cleared);
 147         /* and any buffers used, need to be resolved: */
 148         ctx->resolve |= buffers;
 149
 150         ctx->draw(ctx, info);
 151 }
 152
 153 /* TODO figure out how to make better use of existing state mechanism
 154  * for clear (and possibly gmem->mem / mem->gmem) so we can (a) keep
 155  * track of what state really actually changes, and (b) reduce the code
 156  * in the a2xx/a3xx parts.
 157  */
 158
 159 static void
 160 fd_clear(struct pipe_context *pctx, unsigned buffers,
 161                 const union pipe_color_union *color, double depth, unsigned stencil)
 162 {
 163         struct fd_context *ctx = fd_context(pctx);
 164         struct pipe_framebuffer_state *pfb = &ctx->framebuffer;
 165
 166         ctx->cleared |= buffers;
 167         ctx->resolve |= buffers;
 168         ctx->needs_flush = true;
 169
 170         if (buffers & PIPE_CLEAR_COLOR)
 171                 fd_resource(pfb->cbufs[0]->texture)->dirty = true;
 172
 173         if (buffers & (PIPE_CLEAR_DEPTH | PIPE_CLEAR_STENCIL)) {
 174                 fd_resource(pfb->zsbuf->texture)->dirty = true;
 175                 ctx->gmem_reason |= FD_GMEM_CLEARS_DEPTH_STENCIL;
 176         }
 177
 178         DBG("%x depth=%f, stencil=%u (%s/%s)", buffers, depth, stencil,
 179                 util_format_short_name(pipe_surface_format(pfb->cbufs[0])),
 180                 util_format_short_name(pipe_surface_format(pfb->zsbuf)));
 181
 182         ctx->clear(ctx, buffers, color, depth, stencil);
 183
 184         ctx->dirty |= FD_DIRTY_ZSA |
 185                         FD_DIRTY_VIEWPORT |
 186                         FD_DIRTY_RASTERIZER |
 187                         FD_DIRTY_SAMPLE_MASK |
 188                         FD_DIRTY_PROG |
 189                         FD_DIRTY_CONSTBUF |
 190                         FD_DIRTY_BLEND;
 191
 192         if (fd_mesa_debug & FD_DBG_DCLEAR)
 193                 ctx->dirty = 0xffffffff;
 194 }
 195
 196 static void
 197 fd_clear_render_target(struct pipe_context *pctx, struct pipe_surface *ps,
 198                 const union pipe_color_union *color,
 199                 unsigned x, unsigned y, unsigned w, unsigned h)
 200 {
 201         DBG("TODO: x=%u, y=%u, w=%u, h=%u", x, y, w, h);
 202 }
 203
 204 static void
 205 fd_clear_depth_stencil(struct pipe_context *pctx, struct pipe_surface *ps,
 206                 unsigned buffers, double depth, unsigned stencil,
 207                 unsigned x, unsigned y, unsigned w, unsigned h)
 208 {
 209         DBG("TODO: buffers=%u, depth=%f, stencil=%u, x=%u, y=%u, w=%u, h=%u",
 210                         buffers, depth, stencil, x, y, w, h);
 211 }
 212
 213 void
 214 fd_draw_init(struct pipe_context *pctx)
 215 {
 216         pctx->draw_vbo = fd_draw_vbo;
 217         pctx->clear = fd_clear;
 218         pctx->clear_render_target = fd_clear_render_target;
 219         pctx->clear_depth_stencil = fd_clear_depth_stencil;
 220 }