1 /**************************************************************************
2 *
3 * Copyright 2016 Ilia Mirkin. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a
6 * copy of this software and associated documentation files (the
7 * "Software"), to deal in the Software without restriction, including
8 * without limitation the rights to use, copy, modify, merge, publish,
9 * distribute, sub license, and/or sell copies of the Software, and to
10 * permit persons to whom the Software is furnished to do so, subject to
11 * the following conditions:
12 *
13 * The above copyright notice and this permission notice (including the
14 * next paragraph) shall be included in all copies or substantial portions
15 * of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
20 * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
21 * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
22 * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
23 * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
24 *
25 **************************************************************************/
26
27
28 #include "main/shaderimage.h"
29 #include "program/prog_parameter.h"
30 #include "program/prog_print.h"
31
32 #include "pipe/p_context.h"
33 #include "pipe/p_defines.h"
34 #include "util/u_inlines.h"
35 #include "util/u_surface.h"
36 #include "cso_cache/cso_context.h"
37
38 #include "st_cb_texture.h"
39 #include "st_debug.h"
40 #include "st_texture.h"
41 #include "st_context.h"
42 #include "st_atom.h"
43 #include "st_program.h"
44 #include "st_format.h"
45
46 /**
47 * Convert a gl_image_unit object to a pipe_image_view object.
48 */
49 void
st_convert_image(const struct st_context * st,const struct gl_image_unit * u,struct pipe_image_view * img,enum gl_access_qualifier shader_access)50 st_convert_image(const struct st_context *st, const struct gl_image_unit *u,
51 struct pipe_image_view *img, enum gl_access_qualifier shader_access)
52 {
53 struct gl_texture_object *stObj = u->TexObj;
54
55 img->format = st_mesa_format_to_pipe_format(st, u->_ActualFormat);
56
57 switch (u->Access) {
58 case GL_READ_ONLY:
59 img->access = PIPE_IMAGE_ACCESS_READ;
60 break;
61 case GL_WRITE_ONLY:
62 img->access = PIPE_IMAGE_ACCESS_WRITE;
63 break;
64 case GL_READ_WRITE:
65 img->access = PIPE_IMAGE_ACCESS_READ_WRITE;
66 break;
67 default:
68 unreachable("bad gl_image_unit::Access");
69 }
70
71 img->shader_access = 0;
72 if (!(shader_access & ACCESS_NON_READABLE))
73 img->shader_access |= PIPE_IMAGE_ACCESS_READ;
74 if (!(shader_access & ACCESS_NON_WRITEABLE))
75 img->shader_access |= PIPE_IMAGE_ACCESS_WRITE;
76 if (shader_access & ACCESS_COHERENT)
77 img->shader_access |= PIPE_IMAGE_ACCESS_COHERENT;
78 if (shader_access & ACCESS_VOLATILE)
79 img->shader_access |= PIPE_IMAGE_ACCESS_VOLATILE;
80
81 if (stObj->Target == GL_TEXTURE_BUFFER) {
82 struct gl_buffer_object *stbuf = stObj->BufferObject;
83 unsigned base, size;
84
85 if (!stbuf || !stbuf->buffer) {
86 memset(img, 0, sizeof(*img));
87 return;
88 }
89 struct pipe_resource *buf = stbuf->buffer;
90
91 base = stObj->BufferOffset;
92 assert(base < buf->width0);
93 size = MIN2(buf->width0 - base, (unsigned)stObj->BufferSize);
94
95 img->resource = stbuf->buffer;
96 img->u.buf.offset = base;
97 img->u.buf.size = size;
98 } else {
99 if (!st_finalize_texture(st->ctx, st->pipe, u->TexObj, 0) ||
100 !stObj->pt) {
101 memset(img, 0, sizeof(*img));
102 return;
103 }
104
105 img->resource = stObj->pt;
106 img->u.tex.level = u->Level + stObj->Attrib.MinLevel;
107 img->u.tex.single_layer_view = !u->Layered;
108 assert(img->u.tex.level <= img->resource->last_level);
109 if (stObj->pt->target == PIPE_TEXTURE_3D) {
110 if (u->Layered) {
111 img->u.tex.first_layer = 0;
112 img->u.tex.last_layer = u_minify(stObj->pt->depth0, img->u.tex.level) - 1;
113 } else {
114 img->u.tex.first_layer = u->_Layer;
115 img->u.tex.last_layer = u->_Layer;
116 img->u.tex.is_2d_view_of_3d = true;
117 }
118 } else {
119 img->u.tex.first_layer = u->_Layer + stObj->Attrib.MinLayer;
120 img->u.tex.last_layer = u->_Layer + stObj->Attrib.MinLayer;
121 if (u->Layered && img->resource->array_size > 1) {
122 if (stObj->Immutable)
123 img->u.tex.last_layer += stObj->Attrib.NumLayers - 1;
124 else
125 img->u.tex.last_layer += img->resource->array_size - 1;
126 }
127 }
128 }
129 }
130
131 /**
132 * Get a pipe_image_view object from an image unit.
133 */
134 void
st_convert_image_from_unit(const struct st_context * st,struct pipe_image_view * img,GLuint imgUnit,enum gl_access_qualifier image_access)135 st_convert_image_from_unit(const struct st_context *st,
136 struct pipe_image_view *img,
137 GLuint imgUnit,
138 enum gl_access_qualifier image_access)
139 {
140 struct gl_image_unit *u = &st->ctx->ImageUnits[imgUnit];
141
142 if (!_mesa_is_image_unit_valid(st->ctx, u)) {
143 memset(img, 0, sizeof(*img));
144 return;
145 }
146
147 st_convert_image(st, u, img, image_access);
148 }
149
150 static void
st_bind_images(struct st_context * st,struct gl_program * prog,enum pipe_shader_type shader_type)151 st_bind_images(struct st_context *st, struct gl_program *prog,
152 enum pipe_shader_type shader_type)
153 {
154 unsigned i;
155 struct pipe_image_view images[MAX_IMAGE_UNIFORMS];
156
157 if (!prog || !st->pipe->set_shader_images)
158 return;
159
160 unsigned num_images = prog->info.num_images;
161
162 for (i = 0; i < num_images; i++) {
163 struct pipe_image_view *img = &images[i];
164
165 st_convert_image_from_unit(st, img, prog->sh.ImageUnits[i],
166 prog->sh.image_access[i]);
167 }
168
169 struct pipe_context *pipe = st->pipe;
170 unsigned last_num_images = st->state.num_images[shader_type];
171 unsigned unbind_slots = last_num_images > num_images ?
172 last_num_images - num_images : 0;
173 pipe->set_shader_images(pipe, shader_type, 0, num_images, unbind_slots,
174 images);
175 st->state.num_images[shader_type] = num_images;
176 }
177
st_bind_vs_images(struct st_context * st)178 void st_bind_vs_images(struct st_context *st)
179 {
180 struct gl_program *prog =
181 st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
182
183 st_bind_images(st, prog, PIPE_SHADER_VERTEX);
184 }
185
st_bind_fs_images(struct st_context * st)186 void st_bind_fs_images(struct st_context *st)
187 {
188 struct gl_program *prog =
189 st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
190
191 st_bind_images(st, prog, PIPE_SHADER_FRAGMENT);
192 }
193
st_bind_gs_images(struct st_context * st)194 void st_bind_gs_images(struct st_context *st)
195 {
196 struct gl_program *prog =
197 st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
198
199 st_bind_images(st, prog, PIPE_SHADER_GEOMETRY);
200 }
201
st_bind_tcs_images(struct st_context * st)202 void st_bind_tcs_images(struct st_context *st)
203 {
204 struct gl_program *prog =
205 st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
206
207 st_bind_images(st, prog, PIPE_SHADER_TESS_CTRL);
208 }
209
st_bind_tes_images(struct st_context * st)210 void st_bind_tes_images(struct st_context *st)
211 {
212 struct gl_program *prog =
213 st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
214
215 st_bind_images(st, prog, PIPE_SHADER_TESS_EVAL);
216 }
217
st_bind_cs_images(struct st_context * st)218 void st_bind_cs_images(struct st_context *st)
219 {
220 struct gl_program *prog =
221 st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
222
223 st_bind_images(st, prog, PIPE_SHADER_COMPUTE);
224 }
225