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1 /**************************************************************************
2  *
3  * Copyright 2014 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 #include "main/imports.h"
28 #include "program/prog_parameter.h"
29 #include "program/prog_print.h"
30 #include "compiler/glsl/ir_uniform.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 
37 #include "st_debug.h"
38 #include "st_cb_bufferobjects.h"
39 #include "st_context.h"
40 #include "st_atom.h"
41 #include "st_program.h"
42 
43 static void
st_bind_atomics(struct st_context * st,struct gl_program * prog,enum pipe_shader_type shader_type)44 st_bind_atomics(struct st_context *st, struct gl_program *prog,
45                 enum pipe_shader_type shader_type)
46 {
47    unsigned i;
48 
49    if (!prog || !st->pipe->set_shader_buffers || st->has_hw_atomics)
50       return;
51 
52    for (i = 0; i < prog->sh.data->NumAtomicBuffers; i++) {
53       struct gl_active_atomic_buffer *atomic =
54          &prog->sh.data->AtomicBuffers[i];
55       struct gl_buffer_binding *binding =
56          &st->ctx->AtomicBufferBindings[atomic->Binding];
57       struct st_buffer_object *st_obj =
58          st_buffer_object(binding->BufferObject);
59       struct pipe_shader_buffer sb = { 0 };
60 
61       if (st_obj && st_obj->buffer) {
62          sb.buffer = st_obj->buffer;
63          sb.buffer_offset = binding->Offset;
64          sb.buffer_size = st_obj->buffer->width0 - binding->Offset;
65 
66          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
67           * Take the minimum just to be sure.
68           */
69          if (!binding->AutomaticSize)
70             sb.buffer_size = MIN2(sb.buffer_size, (unsigned) binding->Size);
71       }
72 
73       st->pipe->set_shader_buffers(st->pipe, shader_type,
74                                    atomic->Binding, 1, &sb);
75    }
76 }
77 
78 void
st_bind_vs_atomics(struct st_context * st)79 st_bind_vs_atomics(struct st_context *st)
80 {
81    struct gl_program *prog =
82       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
83 
84    st_bind_atomics(st, prog, PIPE_SHADER_VERTEX);
85 }
86 
87 void
st_bind_fs_atomics(struct st_context * st)88 st_bind_fs_atomics(struct st_context *st)
89 {
90    struct gl_program *prog =
91       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
92 
93    st_bind_atomics(st, prog, PIPE_SHADER_FRAGMENT);
94 }
95 
96 void
st_bind_gs_atomics(struct st_context * st)97 st_bind_gs_atomics(struct st_context *st)
98 {
99    struct gl_program *prog =
100       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
101 
102    st_bind_atomics(st, prog, PIPE_SHADER_GEOMETRY);
103 }
104 
105 void
st_bind_tcs_atomics(struct st_context * st)106 st_bind_tcs_atomics(struct st_context *st)
107 {
108    struct gl_program *prog =
109       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
110 
111    st_bind_atomics(st, prog, PIPE_SHADER_TESS_CTRL);
112 }
113 
114 void
st_bind_tes_atomics(struct st_context * st)115 st_bind_tes_atomics(struct st_context *st)
116 {
117    struct gl_program *prog =
118       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
119 
120    st_bind_atomics(st, prog, PIPE_SHADER_TESS_EVAL);
121 }
122 
123 void
st_bind_cs_atomics(struct st_context * st)124 st_bind_cs_atomics(struct st_context *st)
125 {
126    if (st->has_hw_atomics) {
127       st_bind_hw_atomic_buffers(st);
128       return;
129    }
130    struct gl_program *prog =
131       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
132 
133    st_bind_atomics(st, prog, PIPE_SHADER_COMPUTE);
134 }
135 
136 void
st_bind_hw_atomic_buffers(struct st_context * st)137 st_bind_hw_atomic_buffers(struct st_context *st)
138 {
139    struct pipe_shader_buffer buffers[PIPE_MAX_HW_ATOMIC_BUFFERS];
140    int i;
141 
142    if (!st->has_hw_atomics)
143       return;
144 
145    for (i = 0; i < st->ctx->Const.MaxAtomicBufferBindings; i++) {
146       struct gl_buffer_binding *binding = &st->ctx->AtomicBufferBindings[i];
147       struct st_buffer_object *st_obj = st_buffer_object(binding->BufferObject);
148       struct pipe_shader_buffer *sb = &buffers[i];
149 
150       if (st_obj && st_obj->buffer) {
151         sb->buffer = st_obj->buffer;
152         sb->buffer_offset = binding->Offset;
153         sb->buffer_size = st_obj->buffer->width0 - binding->Offset;
154 
155         /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
156          * Take the minimum just to be sure.
157          */
158         if (!binding->AutomaticSize)
159           sb->buffer_size = MIN2(sb->buffer_size, (unsigned) binding->Size);
160       } else {
161         sb->buffer = NULL;
162         sb->buffer_offset = 0;
163         sb->buffer_size = 0;
164       }
165    }
166 
167    st->pipe->set_hw_atomic_buffers(st->pipe, 0, st->ctx->Const.MaxAtomicBufferBindings, buffers);
168 }
169