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 #include "main/imports.h" 29 #include "main/image.h" 30 #include "main/macros.h" 31 32 #include "vbo/vbo.h" 33 34 #include "st_context.h" 35 #include "st_atom.h" 36 #include "st_cb_bitmap.h" 37 #include "st_cb_bufferobjects.h" 38 #include "st_draw.h" 39 #include "st_program.h" 40 41 #include "pipe/p_context.h" 42 #include "pipe/p_defines.h" 43 #include "util/u_inlines.h" 44 #include "util/u_draw.h" 45 46 #include "draw/draw_private.h" 47 #include "draw/draw_context.h" 48 49 50 /** 51 * Set the (private) draw module's post-transformed vertex format when in 52 * GL_SELECT or GL_FEEDBACK mode or for glRasterPos. 53 */ 54 static void 55 set_feedback_vertex_format(struct gl_context *ctx) 56 { 57 #if 0 58 struct st_context *st = st_context(ctx); 59 struct vertex_info vinfo; 60 GLuint i; 61 62 memset(&vinfo, 0, sizeof(vinfo)); 63 64 if (ctx->RenderMode == GL_SELECT) { 65 assert(ctx->RenderMode == GL_SELECT); 66 vinfo.num_attribs = 1; 67 vinfo.format[0] = FORMAT_4F; 68 vinfo.interp_mode[0] = INTERP_LINEAR; 69 } 70 else { 71 /* GL_FEEDBACK, or glRasterPos */ 72 /* emit all attribs (pos, color, texcoord) as GLfloat[4] */ 73 vinfo.num_attribs = st->state.vs->cso->state.num_outputs; 74 for (i = 0; i < vinfo.num_attribs; i++) { 75 vinfo.format[i] = FORMAT_4F; 76 vinfo.interp_mode[i] = INTERP_LINEAR; 77 } 78 } 79 80 draw_set_vertex_info(st->draw, &vinfo); 81 #endif 82 } 83 84 85 /** 86 * Helper for drawing current vertex arrays. 87 */ 88 static void 89 draw_arrays(struct draw_context *draw, unsigned mode, 90 unsigned start, unsigned count) 91 { 92 struct pipe_draw_info info; 93 94 util_draw_init_info(&info); 95 96 info.mode = mode; 97 info.start = start; 98 info.count = count; 99 info.min_index = start; 100 info.max_index = start + count - 1; 101 102 draw_vbo(draw, &info); 103 } 104 105 106 /** 107 * Called by VBO to draw arrays when in selection or feedback mode and 108 * to implement glRasterPos. 109 * This is very much like the normal draw_vbo() function above. 110 * Look at code refactoring some day. 111 */ 112 void 113 st_feedback_draw_vbo(struct gl_context *ctx, 114 const struct _mesa_prim *prims, 115 GLuint nr_prims, 116 const struct _mesa_index_buffer *ib, 117 GLboolean index_bounds_valid, 118 GLuint min_index, 119 GLuint max_index, 120 struct gl_transform_feedback_object *tfb_vertcount, 121 unsigned stream, 122 struct gl_buffer_object *indirect) 123 { 124 struct st_context *st = st_context(ctx); 125 struct pipe_context *pipe = st->pipe; 126 struct draw_context *draw = st_get_draw_context(st); 127 const struct st_vertex_program *vp; 128 const struct pipe_shader_state *vs; 129 struct pipe_vertex_buffer vbuffers[PIPE_MAX_SHADER_INPUTS]; 130 struct pipe_vertex_element velements[PIPE_MAX_ATTRIBS]; 131 struct pipe_index_buffer ibuffer; 132 struct pipe_transfer *vb_transfer[PIPE_MAX_ATTRIBS] = {NULL}; 133 struct pipe_transfer *ib_transfer = NULL; 134 const struct gl_vertex_array **arrays = ctx->Array._DrawArrays; 135 GLuint attr, i; 136 const GLubyte *low_addr = NULL; 137 const void *mapped_indices = NULL; 138 139 if (!draw) 140 return; 141 142 st_flush_bitmap_cache(st); 143 st_invalidate_readpix_cache(st); 144 145 st_validate_state(st, ST_PIPELINE_RENDER); 146 147 if (!index_bounds_valid) 148 vbo_get_minmax_indices(ctx, prims, ib, &min_index, &max_index, nr_prims); 149 150 /* must get these after state validation! */ 151 vp = st->vp; 152 vs = &st->vp_variant->tgsi; 153 154 if (!st->vp_variant->draw_shader) { 155 st->vp_variant->draw_shader = draw_create_vertex_shader(draw, vs); 156 } 157 158 /* 159 * Set up the draw module's state. 160 * 161 * We'd like to do this less frequently, but the normal state-update 162 * code sends state updates to the pipe, not to our private draw module. 163 */ 164 assert(draw); 165 draw_set_viewport_states(draw, 0, 1, &st->state.viewport[0]); 166 draw_set_clip_state(draw, &st->state.clip); 167 draw_set_rasterizer_state(draw, &st->state.rasterizer, NULL); 168 draw_bind_vertex_shader(draw, st->vp_variant->draw_shader); 169 set_feedback_vertex_format(ctx); 170 171 /* Find the lowest address of the arrays we're drawing */ 172 if (vp->num_inputs) { 173 low_addr = arrays[vp->index_to_input[0]]->Ptr; 174 175 for (attr = 1; attr < vp->num_inputs; attr++) { 176 const GLubyte *start = arrays[vp->index_to_input[attr]]->Ptr; 177 low_addr = MIN2(low_addr, start); 178 } 179 } 180 181 /* loop over TGSI shader inputs to determine vertex buffer 182 * and attribute info 183 */ 184 for (attr = 0; attr < vp->num_inputs; attr++) { 185 const GLuint mesaAttr = vp->index_to_input[attr]; 186 struct gl_buffer_object *bufobj = arrays[mesaAttr]->BufferObj; 187 void *map; 188 189 if (bufobj && bufobj->Name) { 190 /* Attribute data is in a VBO. 191 * Recall that for VBOs, the gl_vertex_array->Ptr field is 192 * really an offset from the start of the VBO, not a pointer. 193 */ 194 struct st_buffer_object *stobj = st_buffer_object(bufobj); 195 assert(stobj->buffer); 196 197 vbuffers[attr].buffer = NULL; 198 vbuffers[attr].user_buffer = NULL; 199 pipe_resource_reference(&vbuffers[attr].buffer, stobj->buffer); 200 vbuffers[attr].buffer_offset = pointer_to_offset(low_addr); 201 velements[attr].src_offset = arrays[mesaAttr]->Ptr - low_addr; 202 203 /* map the attrib buffer */ 204 map = pipe_buffer_map(pipe, vbuffers[attr].buffer, 205 PIPE_TRANSFER_READ, 206 &vb_transfer[attr]); 207 draw_set_mapped_vertex_buffer(draw, attr, map, 208 vbuffers[attr].buffer->width0); 209 } 210 else { 211 vbuffers[attr].buffer = NULL; 212 vbuffers[attr].user_buffer = arrays[mesaAttr]->Ptr; 213 vbuffers[attr].buffer_offset = 0; 214 velements[attr].src_offset = 0; 215 216 draw_set_mapped_vertex_buffer(draw, attr, vbuffers[attr].user_buffer, 217 ~0); 218 } 219 220 /* common-case setup */ 221 vbuffers[attr].stride = arrays[mesaAttr]->StrideB; /* in bytes */ 222 velements[attr].instance_divisor = 0; 223 velements[attr].vertex_buffer_index = attr; 224 velements[attr].src_format = 225 st_pipe_vertex_format(arrays[mesaAttr]->Type, 226 arrays[mesaAttr]->Size, 227 arrays[mesaAttr]->Format, 228 arrays[mesaAttr]->Normalized, 229 arrays[mesaAttr]->Integer); 230 assert(velements[attr].src_format); 231 232 /* tell draw about this attribute */ 233 #if 0 234 draw_set_vertex_buffer(draw, attr, &vbuffer[attr]); 235 #endif 236 } 237 238 draw_set_vertex_buffers(draw, 0, vp->num_inputs, vbuffers); 239 draw_set_vertex_elements(draw, vp->num_inputs, velements); 240 241 memset(&ibuffer, 0, sizeof(ibuffer)); 242 if (ib) { 243 struct gl_buffer_object *bufobj = ib->obj; 244 245 ibuffer.index_size = vbo_sizeof_ib_type(ib->type); 246 if (ibuffer.index_size == 0) 247 goto out_unref_vertex; 248 249 if (bufobj && bufobj->Name) { 250 struct st_buffer_object *stobj = st_buffer_object(bufobj); 251 252 pipe_resource_reference(&ibuffer.buffer, stobj->buffer); 253 ibuffer.offset = pointer_to_offset(ib->ptr); 254 255 mapped_indices = pipe_buffer_map(pipe, stobj->buffer, 256 PIPE_TRANSFER_READ, &ib_transfer); 257 } 258 else { 259 /* skip setting ibuffer.buffer as the draw module does not use it */ 260 mapped_indices = ib->ptr; 261 } 262 263 draw_set_indexes(draw, 264 (ubyte *) mapped_indices + ibuffer.offset, 265 ibuffer.index_size, ~0); 266 } 267 268 /* set the constant buffer */ 269 draw_set_mapped_constant_buffer(st->draw, PIPE_SHADER_VERTEX, 0, 270 st->state.constants[PIPE_SHADER_VERTEX].ptr, 271 st->state.constants[PIPE_SHADER_VERTEX].size); 272 273 274 /* draw here */ 275 for (i = 0; i < nr_prims; i++) { 276 draw_arrays(draw, prims[i].mode, prims[i].start, prims[i].count); 277 } 278 279 280 /* 281 * unmap vertex/index buffers 282 */ 283 if (ib) { 284 draw_set_indexes(draw, NULL, 0, 0); 285 if (ib_transfer) 286 pipe_buffer_unmap(pipe, ib_transfer); 287 pipe_resource_reference(&ibuffer.buffer, NULL); 288 } 289 290 out_unref_vertex: 291 for (attr = 0; attr < vp->num_inputs; attr++) { 292 if (vb_transfer[attr]) 293 pipe_buffer_unmap(pipe, vb_transfer[attr]); 294 draw_set_mapped_vertex_buffer(draw, attr, NULL, 0); 295 pipe_resource_reference(&vbuffers[attr].buffer, NULL); 296 } 297 draw_set_vertex_buffers(draw, 0, vp->num_inputs, NULL); 298 } 299
