1/*
2 * Copyright © 2022 Imagination Technologies Ltd.
3 *
4 * Permission is hereby granted, free of charge, to any person obtaining a copy
5 * of this software and associated documentation files (the "Software"), to deal
6 * in the Software without restriction, including without limitation the rights
7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
8 * copies of the Software, and to permit persons to whom the Software is
9 * 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 NONINFRINGEMENT. IN NO EVENT SHALL THE
18 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
20 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
21 * SOFTWARE.
22 */
23
24#include <stdint.h>
25#include <vulkan/vulkan.h>
26
27#include "hwdef/rogue_hw_defs.h"
28#include "pipe/p_defines.h"
29#include "pvr_csb.h"
30#include "pvr_device_info.h"
31#include "pvr_formats.h"
32#include "pvr_private.h"
33#include "pvr_tex_state.h"
34#include "util/macros.h"
35#include "util/u_math.h"
36#include "vk_format.h"
37#include "vk_log.h"
38
39static enum ROGUE_TEXSTATE_SWIZ pvr_get_hw_swizzle(VkComponentSwizzle comp,
40                                                   enum pipe_swizzle swz)
41{
42   switch (swz) {
43   case PIPE_SWIZZLE_0:
44      return ROGUE_TEXSTATE_SWIZ_SRC_ZERO;
45   case PIPE_SWIZZLE_1:
46      return ROGUE_TEXSTATE_SWIZ_SRC_ONE;
47   case PIPE_SWIZZLE_X:
48      return ROGUE_TEXSTATE_SWIZ_SRCCHAN_0;
49   case PIPE_SWIZZLE_Y:
50      return ROGUE_TEXSTATE_SWIZ_SRCCHAN_1;
51   case PIPE_SWIZZLE_Z:
52      return ROGUE_TEXSTATE_SWIZ_SRCCHAN_2;
53   case PIPE_SWIZZLE_W:
54      return ROGUE_TEXSTATE_SWIZ_SRCCHAN_3;
55   case PIPE_SWIZZLE_NONE:
56      if (comp == VK_COMPONENT_SWIZZLE_A)
57         return ROGUE_TEXSTATE_SWIZ_SRC_ONE;
58      else
59         return ROGUE_TEXSTATE_SWIZ_SRC_ZERO;
60   default:
61      unreachable("Unknown enum pipe_swizzle");
62   };
63}
64
65VkResult
66pvr_pack_tex_state(struct pvr_device *device,
67                   struct pvr_texture_state_info *info,
68                   uint64_t state[static const ROGUE_NUM_TEXSTATE_IMAGE_WORDS])
69{
70   const struct pvr_device_info *dev_info = &device->pdevice->dev_info;
71   uint32_t texture_type;
72
73   pvr_csb_pack (&state[0], TEXSTATE_IMAGE_WORD0, word0) {
74      /* Determine texture type */
75      if (info->is_cube && info->tex_state_type == PVR_TEXTURE_STATE_SAMPLE) {
76         word0.textype = texture_type = PVRX(TEXSTATE_TEXTYPE_CUBE);
77      } else if (info->mem_layout == PVR_MEMLAYOUT_TWIDDLED ||
78                 info->mem_layout == PVR_MEMLAYOUT_3DTWIDDLED) {
79         if (info->type == VK_IMAGE_VIEW_TYPE_3D) {
80            word0.textype = texture_type = PVRX(TEXSTATE_TEXTYPE_3D);
81         } else if (info->type == VK_IMAGE_VIEW_TYPE_1D ||
82                    info->type == VK_IMAGE_VIEW_TYPE_1D_ARRAY) {
83            word0.textype = texture_type = PVRX(TEXSTATE_TEXTYPE_1D);
84         } else if (info->type == VK_IMAGE_VIEW_TYPE_2D ||
85                    info->type == VK_IMAGE_VIEW_TYPE_2D_ARRAY) {
86            word0.textype = texture_type = PVRX(TEXSTATE_TEXTYPE_2D);
87         } else {
88            return vk_error(device, VK_ERROR_FORMAT_NOT_SUPPORTED);
89         }
90      } else if (info->mem_layout == PVR_MEMLAYOUT_LINEAR) {
91         word0.textype = texture_type = PVRX(TEXSTATE_TEXTYPE_STRIDE);
92      } else {
93         return vk_error(device, VK_ERROR_FORMAT_NOT_SUPPORTED);
94      }
95
96      word0.texformat = pvr_get_tex_format(info->format);
97      word0.smpcnt = util_logbase2(info->sample_count);
98      word0.swiz0 =
99         pvr_get_hw_swizzle(VK_COMPONENT_SWIZZLE_R, info->swizzle[0]);
100      word0.swiz1 =
101         pvr_get_hw_swizzle(VK_COMPONENT_SWIZZLE_G, info->swizzle[1]);
102      word0.swiz2 =
103         pvr_get_hw_swizzle(VK_COMPONENT_SWIZZLE_B, info->swizzle[2]);
104      word0.swiz3 =
105         pvr_get_hw_swizzle(VK_COMPONENT_SWIZZLE_A, info->swizzle[3]);
106
107      /* Gamma */
108      if (vk_format_is_srgb(info->format)) {
109         /* Gamma for 2 Component Formats has to be handled differently. */
110         if (vk_format_get_nr_components(info->format) == 2) {
111            /* Enable Gamma only for Channel 0 if Channel 1 is an Alpha
112             * Channel.
113             */
114            if (vk_format_has_alpha(info->format)) {
115               word0.twocomp_gamma = PVRX(TEXSTATE_TWOCOMP_GAMMA_R);
116            } else {
117               /* Otherwise Enable Gamma for both the Channels. */
118               word0.twocomp_gamma = PVRX(TEXSTATE_TWOCOMP_GAMMA_RG);
119
120               /* If Channel 0 happens to be the Alpha Channel, the
121                * ALPHA_MSB bit would not be set thereby disabling Gamma
122                * for Channel 0.
123                */
124            }
125         } else {
126            word0.gamma = PVRX(TEXSTATE_GAMMA_ON);
127         }
128      }
129
130      word0.width = info->extent.width - 1;
131      if (info->type != VK_IMAGE_VIEW_TYPE_1D &&
132          info->type != VK_IMAGE_VIEW_TYPE_1D_ARRAY)
133         word0.height = info->extent.height - 1;
134   }
135
136   /* Texture type specific stuff (word 1) */
137   if (texture_type == PVRX(TEXSTATE_TEXTYPE_STRIDE)) {
138      pvr_csb_pack (&state[1], TEXSTATE_STRIDE_IMAGE_WORD1, word1) {
139         assert(info->stride > 0U);
140         word1.stride = info->stride - 1U;
141         word1.num_mip_levels = info->mip_levels;
142         word1.mipmaps_present = info->mipmaps_present;
143
144         word1.texaddr = PVR_DEV_ADDR_OFFSET(info->addr, info->offset);
145
146         if (vk_format_is_alpha_on_msb(info->format))
147            word1.alpha_msb = true;
148
149         if (!PVR_HAS_FEATURE(dev_info, tpu_extended_integer_lookup) &&
150             !PVR_HAS_FEATURE(dev_info, tpu_image_state_v2)) {
151            if (info->flags & PVR_TEXFLAGS_INDEX_LOOKUP ||
152                info->flags & PVR_TEXFLAGS_BUFFER)
153               word1.index_lookup = true;
154         }
155
156         if (info->flags & PVR_TEXFLAGS_BUFFER)
157            word1.mipmaps_present = false;
158
159         if (PVR_HAS_FEATURE(dev_info, tpu_image_state_v2) &&
160             vk_format_is_compressed(info->format))
161            word1.tpu_image_state_v2_compression_mode =
162               PVRX(TEXSTATE_COMPRESSION_MODE_TPU);
163      }
164   } else {
165      pvr_csb_pack (&state[1], TEXSTATE_IMAGE_WORD1, word1) {
166         word1.num_mip_levels = info->mip_levels;
167         word1.mipmaps_present = info->mipmaps_present;
168         word1.baselevel = info->base_level;
169
170         if (info->extent.depth > 0) {
171            word1.depth = info->extent.depth - 1;
172         } else if (PVR_HAS_FEATURE(dev_info, tpu_array_textures)) {
173            uint32_t array_layers = info->array_size;
174
175            if (info->type == VK_IMAGE_VIEW_TYPE_CUBE_ARRAY &&
176                info->tex_state_type == PVR_TEXTURE_STATE_SAMPLE)
177               array_layers /= 6;
178
179            word1.depth = array_layers - 1;
180         }
181
182         word1.texaddr = PVR_DEV_ADDR_OFFSET(info->addr, info->offset);
183
184         if (!PVR_HAS_FEATURE(dev_info, tpu_extended_integer_lookup) &&
185             !PVR_HAS_FEATURE(dev_info, tpu_image_state_v2)) {
186            if (info->flags & PVR_TEXFLAGS_INDEX_LOOKUP ||
187                info->flags & PVR_TEXFLAGS_BUFFER)
188               word1.index_lookup = true;
189         }
190
191         if (info->flags & PVR_TEXFLAGS_BUFFER)
192            word1.mipmaps_present = false;
193
194         if (info->flags & PVR_TEXFLAGS_BORDER)
195            word1.border = true;
196
197         if (vk_format_is_alpha_on_msb(info->format))
198            word1.alpha_msb = true;
199
200         if (PVR_HAS_FEATURE(dev_info, tpu_image_state_v2) &&
201             vk_format_is_compressed(info->format))
202            word1.tpu_image_state_v2_compression_mode =
203               PVRX(TEXSTATE_COMPRESSION_MODE_TPU);
204      }
205   }
206
207   return VK_SUCCESS;
208}
209