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1 /**************************************************************************
2  *
3  * Copyright 2007 VMware, Inc.
4  * All Rights Reserved.
5  *
6  * Permission is hereby granted, free of charge, to any person obtaining a
7  * copy of this software and associated documentation files (the
8  * "Software"), to deal in the Software without restriction, including
9  * without limitation the rights to use, copy, modify, merge, publish,
10  * distribute, sub license, and/or sell copies of the Software, and to
11  * permit persons to whom the Software is furnished to do so, subject to
12  * the following conditions:
13  *
14  * The above copyright notice and this permission notice (including the
15  * next paragraph) shall be included in all copies or substantial portions
16  * of the Software.
17  *
18  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
19  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
20  * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT.
21  * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS BE LIABLE FOR
22  * ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
23  * TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
24  * SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
25  *
26  **************************************************************************/
27 
28 /*
29  * Authors:
30  *   Keith Whitwell <keithw@vmware.com>
31  *   Brian Paul
32  */
33 
34 #include "main/imports.h"
35 #include "program/prog_parameter.h"
36 #include "program/prog_print.h"
37 #include "main/shaderapi.h"
38 #include "pipe/p_context.h"
39 #include "pipe/p_defines.h"
40 #include "util/u_inlines.h"
41 #include "util/u_upload_mgr.h"
42 #include "cso_cache/cso_context.h"
43 
44 #include "st_debug.h"
45 #include "st_context.h"
46 #include "st_atom.h"
47 #include "st_atom_constbuf.h"
48 #include "st_program.h"
49 #include "st_cb_bufferobjects.h"
50 
51 /**
52  * Pass the given program parameters to the graphics pipe as a
53  * constant buffer.
54  */
st_upload_constants(struct st_context * st,struct gl_program * prog)55 void st_upload_constants(struct st_context *st, struct gl_program *prog)
56 {
57    gl_shader_stage stage = prog->info.stage;
58    struct gl_program_parameter_list *params = prog->Parameters;
59    enum pipe_shader_type shader_type = pipe_shader_type_from_mesa(stage);
60 
61    assert(shader_type == PIPE_SHADER_VERTEX ||
62           shader_type == PIPE_SHADER_FRAGMENT ||
63           shader_type == PIPE_SHADER_GEOMETRY ||
64           shader_type == PIPE_SHADER_TESS_CTRL ||
65           shader_type == PIPE_SHADER_TESS_EVAL ||
66           shader_type == PIPE_SHADER_COMPUTE);
67 
68    /* update the ATI constants before rendering */
69    if (shader_type == PIPE_SHADER_FRAGMENT && st->fp->ati_fs) {
70       struct ati_fragment_shader *ati_fs = st->fp->ati_fs;
71       unsigned c;
72 
73       for (c = 0; c < MAX_NUM_FRAGMENT_CONSTANTS_ATI; c++) {
74          if (ati_fs->LocalConstDef & (1 << c))
75             memcpy(params->ParameterValues[c],
76                    ati_fs->Constants[c], sizeof(GLfloat) * 4);
77          else
78             memcpy(params->ParameterValues[c],
79                    st->ctx->ATIFragmentShader.GlobalConstants[c], sizeof(GLfloat) * 4);
80       }
81    }
82 
83    /* Make all bindless samplers/images bound texture/image units resident in
84     * the context.
85     */
86    st_make_bound_samplers_resident(st, prog);
87    st_make_bound_images_resident(st, prog);
88 
89    /* update constants */
90    if (params && params->NumParameters) {
91       struct pipe_constant_buffer cb;
92       const uint paramBytes = params->NumParameters * sizeof(GLfloat) * 4;
93 
94       /* Update the constants which come from fixed-function state, such as
95        * transformation matrices, fog factors, etc.  The rest of the values in
96        * the parameters list are explicitly set by the user with glUniform,
97        * glProgramParameter(), etc.
98        */
99       if (params->StateFlags)
100          _mesa_load_state_parameters(st->ctx, params);
101 
102       _mesa_shader_write_subroutine_indices(st->ctx, stage);
103 
104       cb.buffer = NULL;
105       cb.user_buffer = params->ParameterValues;
106       cb.buffer_offset = 0;
107       cb.buffer_size = paramBytes;
108 
109       if (ST_DEBUG & DEBUG_CONSTANTS) {
110          debug_printf("%s(shader=%d, numParams=%d, stateFlags=0x%x)\n",
111                       __func__, shader_type, params->NumParameters,
112                       params->StateFlags);
113          _mesa_print_parameter_list(params);
114       }
115 
116       cso_set_constant_buffer(st->cso_context, shader_type, 0, &cb);
117       pipe_resource_reference(&cb.buffer, NULL);
118 
119       st->state.constants[shader_type].ptr = params->ParameterValues;
120       st->state.constants[shader_type].size = paramBytes;
121    }
122    else if (st->state.constants[shader_type].ptr) {
123       /* Unbind. */
124       st->state.constants[shader_type].ptr = NULL;
125       st->state.constants[shader_type].size = 0;
126       cso_set_constant_buffer(st->cso_context, shader_type, 0, NULL);
127    }
128 }
129 
130 
131 /**
132  * Vertex shader:
133  */
st_update_vs_constants(struct st_context * st)134 void st_update_vs_constants(struct st_context *st )
135 {
136    st_upload_constants(st, &st->vp->Base);
137 }
138 
139 /**
140  * Fragment shader:
141  */
st_update_fs_constants(struct st_context * st)142 void st_update_fs_constants(struct st_context *st )
143 {
144    st_upload_constants(st, &st->fp->Base);
145 }
146 
147 
148 /* Geometry shader:
149  */
st_update_gs_constants(struct st_context * st)150 void st_update_gs_constants(struct st_context *st )
151 {
152    struct st_common_program *gp = st->gp;
153 
154    if (gp)
155       st_upload_constants(st, &gp->Base);
156 }
157 
158 /* Tessellation control shader:
159  */
st_update_tcs_constants(struct st_context * st)160 void st_update_tcs_constants(struct st_context *st )
161 {
162    struct st_common_program *tcp = st->tcp;
163 
164    if (tcp)
165       st_upload_constants(st, &tcp->Base);
166 }
167 
168 /* Tessellation evaluation shader:
169  */
st_update_tes_constants(struct st_context * st)170 void st_update_tes_constants(struct st_context *st )
171 {
172    struct st_common_program *tep = st->tep;
173 
174    if (tep)
175       st_upload_constants(st, &tep->Base);
176 }
177 
178 /* Compute shader:
179  */
st_update_cs_constants(struct st_context * st)180 void st_update_cs_constants(struct st_context *st )
181 {
182    struct st_compute_program *cp = st->cp;
183 
184    if (cp)
185       st_upload_constants(st, &cp->Base);
186 }
187 
st_bind_ubos(struct st_context * st,struct gl_program * prog,unsigned shader_type)188 static void st_bind_ubos(struct st_context *st, struct gl_program *prog,
189                          unsigned shader_type)
190 {
191    unsigned i;
192    struct pipe_constant_buffer cb = { 0 };
193 
194    if (!prog)
195       return;
196 
197    for (i = 0; i < prog->info.num_ubos; i++) {
198       struct gl_buffer_binding *binding;
199       struct st_buffer_object *st_obj;
200 
201       binding =
202          &st->ctx->UniformBufferBindings[prog->sh.UniformBlocks[i]->Binding];
203       st_obj = st_buffer_object(binding->BufferObject);
204 
205       cb.buffer = st_obj->buffer;
206 
207       if (cb.buffer) {
208          cb.buffer_offset = binding->Offset;
209          cb.buffer_size = cb.buffer->width0 - binding->Offset;
210 
211          /* AutomaticSize is FALSE if the buffer was set with BindBufferRange.
212           * Take the minimum just to be sure.
213           */
214          if (!binding->AutomaticSize)
215             cb.buffer_size = MIN2(cb.buffer_size, (unsigned) binding->Size);
216       }
217       else {
218          cb.buffer_offset = 0;
219          cb.buffer_size = 0;
220       }
221 
222       cso_set_constant_buffer(st->cso_context, shader_type, 1 + i, &cb);
223    }
224 }
225 
st_bind_vs_ubos(struct st_context * st)226 void st_bind_vs_ubos(struct st_context *st)
227 {
228    struct gl_program *prog =
229       st->ctx->_Shader->CurrentProgram[MESA_SHADER_VERTEX];
230 
231    st_bind_ubos(st, prog, PIPE_SHADER_VERTEX);
232 }
233 
st_bind_fs_ubos(struct st_context * st)234 void st_bind_fs_ubos(struct st_context *st)
235 {
236    struct gl_program *prog =
237       st->ctx->_Shader->CurrentProgram[MESA_SHADER_FRAGMENT];
238 
239    st_bind_ubos(st, prog, PIPE_SHADER_FRAGMENT);
240 }
241 
st_bind_gs_ubos(struct st_context * st)242 void st_bind_gs_ubos(struct st_context *st)
243 {
244    struct gl_program *prog =
245       st->ctx->_Shader->CurrentProgram[MESA_SHADER_GEOMETRY];
246 
247    st_bind_ubos(st, prog, PIPE_SHADER_GEOMETRY);
248 }
249 
st_bind_tcs_ubos(struct st_context * st)250 void st_bind_tcs_ubos(struct st_context *st)
251 {
252    struct gl_program *prog =
253       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_CTRL];
254 
255    st_bind_ubos(st, prog, PIPE_SHADER_TESS_CTRL);
256 }
257 
st_bind_tes_ubos(struct st_context * st)258 void st_bind_tes_ubos(struct st_context *st)
259 {
260    struct gl_program *prog =
261       st->ctx->_Shader->CurrentProgram[MESA_SHADER_TESS_EVAL];
262 
263    st_bind_ubos(st, prog, PIPE_SHADER_TESS_EVAL);
264 }
265 
st_bind_cs_ubos(struct st_context * st)266 void st_bind_cs_ubos(struct st_context *st)
267 {
268    struct gl_program *prog =
269       st->ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
270 
271    st_bind_ubos(st, prog, PIPE_SHADER_COMPUTE);
272 }
273