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 #include "compiler/glsl/ir_uniform.h"
32
33 #include "pipe/p_context.h"
34 #include "pipe/p_defines.h"
35 #include "util/u_inlines.h"
36 #include "util/u_surface.h"
37 #include "cso_cache/cso_context.h"
38
39 #include "st_cb_texture.h"
40 #include "st_debug.h"
41 #include "st_texture.h"
42 #include "st_context.h"
43 #include "st_atom.h"
44 #include "st_program.h"
45 #include "st_format.h"
46
47 /**
48 * Convert a gl_image_unit object to a pipe_image_view object.
49 */
50 void
st_convert_image(const struct st_context * st,const struct gl_image_unit * u,struct pipe_image_view * img,unsigned shader_access)51 st_convert_image(const struct st_context *st, const struct gl_image_unit *u,
52 struct pipe_image_view *img, unsigned shader_access)
53 {
54 struct gl_texture_object *stObj = u->TexObj;
55
56 img->format = st_mesa_format_to_pipe_format(st, u->_ActualFormat);
57
58 switch (u->Access) {
59 case GL_READ_ONLY:
60 img->access = PIPE_IMAGE_ACCESS_READ;
61 break;
62 case GL_WRITE_ONLY:
63 img->access = PIPE_IMAGE_ACCESS_WRITE;
64 break;
65 case GL_READ_WRITE:
66 img->access = PIPE_IMAGE_ACCESS_READ_WRITE;
67 break;
68 default:
69 unreachable("bad gl_image_unit::Access");
70 }
71
72 switch (shader_access) {
73 case GL_NONE:
74 img->shader_access = 0;
75 break;
76 case GL_READ_ONLY:
77 img->shader_access = PIPE_IMAGE_ACCESS_READ;
78 break;
79 case GL_WRITE_ONLY:
80 img->shader_access = PIPE_IMAGE_ACCESS_WRITE;
81 break;
82 case GL_READ_WRITE:
83 img->shader_access = PIPE_IMAGE_ACCESS_READ_WRITE;
84 break;
85 default:
86 unreachable("bad gl_image_unit::Access");
87 }
88
89 if (stObj->Target == GL_TEXTURE_BUFFER) {
90 struct gl_buffer_object *stbuf = stObj->BufferObject;
91 unsigned base, size;
92
93 if (!stbuf || !stbuf->buffer) {
94 memset(img, 0, sizeof(*img));
95 return;
96 }
97 struct pipe_resource *buf = stbuf->buffer;
98
99 base = stObj->BufferOffset;
100 assert(base < buf->width0);
101 size = MIN2(buf->width0 - base, (unsigned)stObj->BufferSize);
102
103 img->resource = stbuf->buffer;
104 img->u.buf.offset = base;
105 img->u.buf.size = size;
106 } else {
107 if (!st_finalize_texture(st->ctx, st->pipe, u->TexObj, 0) ||
108 !stObj->pt) {
109 memset(img, 0, sizeof(*img));
110 return;
111 }
112
113 img->resource = stObj->pt;
114 img->u.tex.level = u->Level + stObj->Attrib.MinLevel;
115 assert(img->u.tex.level <= img->resource->last_level);
116 if (stObj->pt->target == PIPE_TEXTURE_3D) {
117 if (u->Layered) {
118 img->u.tex.first_layer = 0;
119 img->u.tex.last_layer = u_minify(stObj->pt->depth0, img->u.tex.level) - 1;
120 } else {
121 img->u.tex.first_layer = u->_Layer;
122 img->u.tex.last_layer = u->_Layer;
123 }
124 } else {
125 img->u.tex.first_layer = u->_Layer + stObj->Attrib.MinLayer;
126 img->u.tex.last_layer = u->_Layer + stObj->Attrib.MinLayer;
127 if (u->Layered && img->resource->array_size > 1) {
128 if (stObj->Immutable)
129 img->u.tex.last_layer += stObj->Attrib.NumLayers - 1;
130 else
131 img->u.tex.last_layer += img->resource->array_size - 1;
132 }
133 }
134 }
135 }
136
137 /**
138 * Get a pipe_image_view object from an image unit.
139 */
140 void
st_convert_image_from_unit(const struct st_context * st,struct pipe_image_view * img,GLuint imgUnit,unsigned shader_access)141 st_convert_image_from_unit(const struct st_context *st,
142 struct pipe_image_view *img,
143 GLuint imgUnit,
144 unsigned shader_access)
145 {
146 struct gl_image_unit *u = &st->ctx->ImageUnits[imgUnit];
147
148 if (!_mesa_is_image_unit_valid(st->ctx, u)) {
149 memset(img, 0, sizeof(*img));
150 return;
151 }
152
153 st_convert_image(st, u, img, shader_access);
154 }
155
156 static void
st_bind_images(struct st_context * st,struct gl_program * prog,enum pipe_shader_type shader_type)157 st_bind_images(struct st_context *st, struct gl_program *prog,
158 enum pipe_shader_type shader_type)
159 {
160 unsigned i;
161 struct pipe_image_view images[MAX_IMAGE_UNIFORMS];
162
163 if (!prog || !st->pipe->set_shader_images)
164 return;
165
166 unsigned num_images = prog->info.num_images;
167
168 for (i = 0; i < num_images; i++) {
169 struct pipe_image_view *img = &images[i];
170
171 st_convert_image_from_unit(st, img, prog->sh.ImageUnits[i],
172 prog->sh.ImageAccess[i]);
173 }
174
175 struct pipe_context *pipe = st->pipe;
176 unsigned last_num_images = st->state.num_images[shader_type];
177 unsigned unbind_slots = last_num_images > num_images ?
178 last_num_images - num_images : 0;
179 pipe->set_shader_images(pipe, shader_type, 0, num_images, unbind_slots,
180 images);
181 st->state.num_images[shader_type] = num_images;
182 }
183
st_bind_vs_images(struct st_context * st)184 void st_bind_vs_images(struct st_context *st)
185 {
186 struct gl_program *prog =
187 st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
188
189 st_bind_images(st, prog, PIPE_SHADER_VERTEX);
190 }
191
st_bind_fs_images(struct st_context * st)192 void st_bind_fs_images(struct st_context *st)
193 {
194 struct gl_program *prog =
195 st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
196
197 st_bind_images(st, prog, PIPE_SHADER_FRAGMENT);
198 }
199
st_bind_gs_images(struct st_context * st)200 void st_bind_gs_images(struct st_context *st)
201 {
202 struct gl_program *prog =
203 st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
204
205 st_bind_images(st, prog, PIPE_SHADER_GEOMETRY);
206 }
207
st_bind_tcs_images(struct st_context * st)208 void st_bind_tcs_images(struct st_context *st)
209 {
210 struct gl_program *prog =
211 st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
212
213 st_bind_images(st, prog, PIPE_SHADER_TESS_CTRL);
214 }
215
st_bind_tes_images(struct st_context * st)216 void st_bind_tes_images(struct st_context *st)
217 {
218 struct gl_program *prog =
219 st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
220
221 st_bind_images(st, prog, PIPE_SHADER_TESS_EVAL);
222 }
223
st_bind_cs_images(struct st_context * st)224 void st_bind_cs_images(struct st_context *st)
225 {
226 struct gl_program *prog =
227 st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
228
229 st_bind_images(st, prog, PIPE_SHADER_COMPUTE);
230 }
231