src/gallium/drivers/r600/r600_draw.c

   1 /*
   2  * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
   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  * on the rights to use, copy, modify, merge, publish, distribute, sub
   8  * license, and/or sell copies of the Software, and to permit persons to whom
   9  * the 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 NON-INFRINGEMENT. IN NO EVENT SHALL
  18  * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
  19  * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  20  * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  21  * USE OR OTHER DEALINGS IN THE SOFTWARE.
  22  *
  23  * Authors:
  24  *      Jerome Glisse
  25  *      Corbin Simpson
  26  */
  27 #include <stdio.h>
  28 #include <errno.h>
  29 #include <pipe/p_screen.h>
  30 #include <util/u_format.h>
  31 #include <util/u_math.h>
  32 #include <util/u_inlines.h>
  33 #include <util/u_memory.h>
  34 #include <util/u_index_modify.h>
  35 #include "radeon.h"
  36 #include "r600_screen.h"
  37 #include "r600_context.h"
  38 #include "r600_resource.h"
  39 #include "r600_state_inlines.h"
  40
  41 static void r600_translate_index_buffer(struct r600_context *r600,
  42                                         struct pipe_resource **index_buffer,
  43                                         unsigned *index_size, unsigned index_offset,
  44                                         unsigned *start, unsigned count)
  45 {
  46     switch (*index_size) {
  47         case 1:
  48             util_shorten_ubyte_elts(&r600->context, index_buffer, index_offset, *start, count);
  49             *index_size = 2;
  50             *start = 0;
  51             break;
  52
  53         case 2:
  54             if (*start % 2 != 0 || index_offset) {
  55                 util_rebuild_ushort_elts(&r600->context, index_buffer, index_offset, *start, count);
  56                 *start = 0;
  57             }
  58             break;
  59
  60         case 4:
  61             if (index_offset) {
  62                 util_rebuild_uint_elts(&r600->context, index_buffer, index_offset, *start, count);
  63                 *start = 0;
  64             }
  65             break;
  66     }
  67 }
  68
  69 static int r600_draw_common(struct r600_draw *draw)
  70 {
  71         struct r600_context *rctx = r600_context(draw->ctx);
  72         /* FIXME vs_resource */
  73         struct radeon_state *vs_resource;
  74         struct r600_resource *rbuffer;
  75         unsigned i, j, offset, format, prim;
  76         u32 vgt_dma_index_type, vgt_draw_initiator;
  77         struct pipe_vertex_buffer *vertex_buffer;
  78         int r;
  79
  80         r = r600_context_hw_states(draw->ctx);
  81         if (r)
  82                 return r;
  83         switch (draw->index_size) {
  84         case 2:
  85                 vgt_draw_initiator = S_0287F0_SOURCE_SELECT(V_0287F0_DI_SRC_SEL_DMA);
  86                 vgt_dma_index_type = 0;
  87                 break;
  88         case 4:
  89                 vgt_draw_initiator = S_0287F0_SOURCE_SELECT(V_0287F0_DI_SRC_SEL_DMA);
  90                 vgt_dma_index_type = 1;
  91                 break;
  92         case 0:
  93                 vgt_draw_initiator = S_0287F0_SOURCE_SELECT(V_0287F0_DI_SRC_SEL_AUTO_INDEX);
  94                 vgt_dma_index_type = 0;
  95                 break;
  96         default:
  97                 fprintf(stderr, "%s %d unsupported index size %d\n", __func__, __LINE__, draw->index_size);
  98                 return -EINVAL;
  99         }
 100         r = r600_conv_pipe_prim(draw->mode, &prim);
 101         if (r)
 102                 return r;
 103
 104         /* rebuild vertex shader if input format changed */
 105         r = r600_pipe_shader_update(draw->ctx, rctx->vs_shader);
 106         if (r)
 107                 return r;
 108         r = r600_pipe_shader_update(draw->ctx, rctx->ps_shader);
 109         if (r)
 110                 return r;
 111         radeon_draw_bind(&rctx->draw, &rctx->vs_shader->rstate[0]);
 112         radeon_draw_bind(&rctx->draw, &rctx->ps_shader->rstate[0]);
 113
 114         for (i = 0 ; i < rctx->vs_nresource; i++) {
 115                 radeon_state_fini(&rctx->vs_resource[i]);
 116         }
 117         for (i = 0 ; i < rctx->vertex_elements->count; i++) {
 118                 vs_resource = &rctx->vs_resource[i];
 119                 j = rctx->vertex_elements->elements[i].vertex_buffer_index;
 120                 vertex_buffer = &rctx->vertex_buffer[j];
 121                 rbuffer = (struct r600_resource*)vertex_buffer->buffer;
 122                 offset = rctx->vertex_elements->elements[i].src_offset + vertex_buffer->buffer_offset;
 123                 format = r600_translate_colorformat(rctx->vertex_elements->elements[i].src_format);
 124
 125                 rctx->vtbl->vs_resource(rctx, i, rbuffer, offset, vertex_buffer->stride, format);
 126                 radeon_draw_bind(&rctx->draw, vs_resource);
 127         }
 128         rctx->vs_nresource = rctx->vertex_elements->count;
 129         /* FIXME start need to change winsys */
 130         rctx->vtbl->vgt_init(draw, vgt_draw_initiator);
 131         radeon_draw_bind(&rctx->draw, &draw->draw);
 132
 133         rctx->vtbl->vgt_prim(draw, prim, vgt_dma_index_type);
 134         radeon_draw_bind(&rctx->draw, &draw->vgt);
 135
 136         r = radeon_ctx_set_draw(rctx->ctx, &rctx->draw);
 137         if (r == -EBUSY) {
 138                 r600_flush(draw->ctx, 0, NULL);
 139                 r = radeon_ctx_set_draw(rctx->ctx, &rctx->draw);
 140         }
 141
 142         radeon_state_fini(&draw->draw);
 143
 144         return r;
 145 }
 146
 147 void r600_draw_vbo(struct pipe_context *ctx, const struct pipe_draw_info *info)
 148 {
 149         struct r600_context *rctx = r600_context(ctx);
 150         struct r600_draw draw;
 151         int r;
 152
 153         assert(info->index_bias == 0);
 154
 155         memset(&draw, 0, sizeof(draw));
 156
 157         if (rctx->any_user_vbs) {
 158                 r600_upload_user_buffers(rctx);
 159                 rctx->any_user_vbs = false;
 160         }
 161
 162         draw.ctx = ctx;
 163         draw.mode = info->mode;
 164         draw.start = info->start;
 165         draw.count = info->count;
 166         if (info->indexed && rctx->index_buffer.buffer) {
 167                 draw.start += rctx->index_buffer.offset / rctx->index_buffer.index_size;
 168                 draw.min_index = info->min_index;
 169                 draw.max_index = info->max_index;
 170
 171                 r600_translate_index_buffer(rctx, &rctx->index_buffer.buffer,
 172                                             &rctx->index_buffer.index_size,
 173                                             rctx->index_buffer.offset, &draw.start,
 174                                             info->count);
 175
 176                 fprintf(stderr,"draw start is %d\n", draw.start);
 177                 draw.index_size = rctx->index_buffer.index_size;
 178                 draw.index_buffer = rctx->index_buffer.buffer;
 179                 draw.index_buffer_offset = rctx->index_buffer.offset;
 180
 181                 r600_upload_index_buffer(rctx, &draw);
 182         }
 183         else {
 184                 draw.index_size = 0;
 185                 draw.index_buffer = NULL;
 186                 draw.min_index = 0;
 187                 draw.max_index = 0xffffff;
 188                 draw.index_buffer_offset = 0;
 189         }
 190         r = r600_draw_common(&draw);
 191         if (r)
 192           fprintf(stderr,"draw common failed %d\n", r);
 193 }