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  1. /* -*- mode: C; c-file-style: "k&r"; tab-width 4; indent-tabs-mode: t; -*- */
  2.  
  3. /*
  4.  * Copyright (C) 2012-2013 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_inlines.h"
  33.  
  34. #include "fd2_texture.h"
  35. #include "fd2_util.h"
  36.  
  37. static enum sq_tex_clamp
  38. tex_clamp(unsigned wrap)
  39. {
  40.         switch (wrap) {
  41.         case PIPE_TEX_WRAP_REPEAT:
  42.                 return SQ_TEX_WRAP;
  43.         case PIPE_TEX_WRAP_CLAMP:
  44.                 return SQ_TEX_CLAMP_HALF_BORDER;
  45.         case PIPE_TEX_WRAP_CLAMP_TO_EDGE:
  46.                 return SQ_TEX_CLAMP_LAST_TEXEL;
  47.         case PIPE_TEX_WRAP_CLAMP_TO_BORDER:
  48.                 return SQ_TEX_CLAMP_BORDER;
  49.         case PIPE_TEX_WRAP_MIRROR_REPEAT:
  50.                 return SQ_TEX_MIRROR;
  51.         case PIPE_TEX_WRAP_MIRROR_CLAMP:
  52.                 return SQ_TEX_MIRROR_ONCE_HALF_BORDER;
  53.         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_EDGE:
  54.                 return SQ_TEX_MIRROR_ONCE_LAST_TEXEL;
  55.         case PIPE_TEX_WRAP_MIRROR_CLAMP_TO_BORDER:
  56.                 return SQ_TEX_MIRROR_ONCE_BORDER;
  57.         default:
  58.                 DBG("invalid wrap: %u", wrap);
  59.                 return 0;
  60.         }
  61. }
  62.  
  63. static enum sq_tex_filter
  64. tex_filter(unsigned filter)
  65. {
  66.         switch (filter) {
  67.         case PIPE_TEX_FILTER_NEAREST:
  68.                 return SQ_TEX_FILTER_POINT;
  69.         case PIPE_TEX_FILTER_LINEAR:
  70.                 return SQ_TEX_FILTER_BILINEAR;
  71.         default:
  72.                 DBG("invalid filter: %u", filter);
  73.                 return 0;
  74.         }
  75. }
  76.  
  77. static void *
  78. fd2_sampler_state_create(struct pipe_context *pctx,
  79.                 const struct pipe_sampler_state *cso)
  80. {
  81.         struct fd2_sampler_stateobj *so = CALLOC_STRUCT(fd2_sampler_stateobj);
  82.  
  83.         if (!so)
  84.                 return NULL;
  85.  
  86.         so->base = *cso;
  87.  
  88.         /* SQ_TEX0_PITCH() must be OR'd in later when we know the bound texture: */
  89.         so->tex0 =
  90.                 A2XX_SQ_TEX_0_CLAMP_X(tex_clamp(cso->wrap_s)) |
  91.                 A2XX_SQ_TEX_0_CLAMP_Y(tex_clamp(cso->wrap_t)) |
  92.                 A2XX_SQ_TEX_0_CLAMP_Z(tex_clamp(cso->wrap_r));
  93.  
  94.         so->tex3 =
  95.                 A2XX_SQ_TEX_3_XY_MAG_FILTER(tex_filter(cso->mag_img_filter)) |
  96.                 A2XX_SQ_TEX_3_XY_MIN_FILTER(tex_filter(cso->min_img_filter));
  97.  
  98.         so->tex4 = 0x00000000; /* ??? */
  99.         so->tex5 = 0x00000200; /* ??? */
  100.  
  101.         return so;
  102. }
  103.  
  104. static void
  105. fd2_sampler_states_bind(struct pipe_context *pctx,
  106.                 unsigned shader, unsigned start,
  107.                 unsigned nr, void **hwcso)
  108. {
  109.         if (shader == PIPE_SHADER_FRAGMENT) {
  110.                 struct fd_context *ctx = fd_context(pctx);
  111.  
  112.                 /* on a2xx, since there is a flat address space for textures/samplers,
  113.                  * a change in # of fragment textures/samplers will trigger patching and
  114.                  * re-emitting the vertex shader:
  115.                  */
  116.                 if (nr != ctx->fragtex.num_samplers)
  117.                         ctx->dirty |= FD_DIRTY_TEXSTATE;
  118.         }
  119.  
  120.         fd_sampler_states_bind(pctx, shader, start, nr, hwcso);
  121. }
  122.  
  123. static struct pipe_sampler_view *
  124. fd2_sampler_view_create(struct pipe_context *pctx, struct pipe_resource *prsc,
  125.                 const struct pipe_sampler_view *cso)
  126. {
  127.         struct fd2_pipe_sampler_view *so = CALLOC_STRUCT(fd2_pipe_sampler_view);
  128.         struct fd_resource *rsc = fd_resource(prsc);
  129.  
  130.         if (!so)
  131.                 return NULL;
  132.  
  133.         so->base = *cso;
  134.         pipe_reference(NULL, &prsc->reference);
  135.         so->base.texture = prsc;
  136.         so->base.reference.count = 1;
  137.         so->base.context = pctx;
  138.  
  139.         so->fmt = fd2_pipe2surface(cso->format);
  140.  
  141.         so->tex0 = A2XX_SQ_TEX_0_PITCH(rsc->slices[0].pitch);
  142.         so->tex2 =
  143.                 A2XX_SQ_TEX_2_HEIGHT(prsc->height0 - 1) |
  144.                 A2XX_SQ_TEX_2_WIDTH(prsc->width0 - 1);
  145.         so->tex3 = fd2_tex_swiz(cso->format, cso->swizzle_r, cso->swizzle_g,
  146.                         cso->swizzle_b, cso->swizzle_a);
  147.  
  148.         return &so->base;
  149. }
  150.  
  151. /* map gallium sampler-id to hw const-idx.. adreno uses a flat address
  152.  * space of samplers (const-idx), so we need to map the gallium sampler-id
  153.  * which is per-shader to a global const-idx space.
  154.  *
  155.  * Fragment shader sampler maps directly to const-idx, and vertex shader
  156.  * is offset by the # of fragment shader samplers.  If the # of fragment
  157.  * shader samplers changes, this shifts the vertex shader indexes.
  158.  *
  159.  * TODO maybe we can do frag shader 0..N  and vert shader N..0 to avoid
  160.  * this??
  161.  */
  162. unsigned
  163. fd2_get_const_idx(struct fd_context *ctx, struct fd_texture_stateobj *tex,
  164.                 unsigned samp_id)
  165. {
  166.         if (tex == &ctx->fragtex)
  167.                 return samp_id;
  168.         return samp_id + ctx->fragtex.num_samplers;
  169. }
  170.  
  171. void
  172. fd2_texture_init(struct pipe_context *pctx)
  173. {
  174.         pctx->create_sampler_state = fd2_sampler_state_create;
  175.         pctx->bind_sampler_states = fd2_sampler_states_bind;
  176.         pctx->create_sampler_view = fd2_sampler_view_create;
  177.         pctx->set_sampler_views = fd_set_sampler_views;
  178. }
  179.