1 /************************************************************************** 2 * 3 * Copyright 2010 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 "lp_context.h" 29 #include "lp_state.h" 30 #include "lp_texture.h" 31 32 #include "util/u_memory.h" 33 #include "draw/draw_context.h" 34 35 static struct pipe_stream_output_target * 36 llvmpipe_create_so_target(struct pipe_context *pipe, 37 struct pipe_resource *buffer, 38 unsigned buffer_offset, 39 unsigned buffer_size) 40 { 41 struct draw_so_target *t; 42 43 t = CALLOC_STRUCT(draw_so_target); 44 if (!t) 45 return NULL; 46 47 t->target.context = pipe; 48 t->target.reference.count = 1; 49 pipe_resource_reference(&t->target.buffer, buffer); 50 t->target.buffer_offset = buffer_offset; 51 t->target.buffer_size = buffer_size; 52 return &t->target; 53 } 54 55 static void 56 llvmpipe_so_target_destroy(struct pipe_context *pipe, 57 struct pipe_stream_output_target *target) 58 { 59 pipe_resource_reference(&target->buffer, NULL); 60 FREE(target); 61 } 62 63 static void 64 llvmpipe_set_so_targets(struct pipe_context *pipe, 65 unsigned num_targets, 66 struct pipe_stream_output_target **targets, 67 const unsigned *offsets) 68 { 69 struct llvmpipe_context *llvmpipe = llvmpipe_context(pipe); 70 int i; 71 for (i = 0; i < num_targets; i++) { 72 const boolean append = (offsets[i] == (unsigned)-1); 73 /* 74 * Warn if the so target was created in another context. 75 * XXX Not entirely sure if mesa/st may rely on this? 76 * Otherwise should just assert. 77 */ 78 if (targets[i] && targets[i]->context != pipe) { 79 debug_printf("Illegal setting of so target with target %d created in " 80 "another context\n", i); 81 } 82 pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], targets[i]); 83 /* If we're not appending then lets set the internal 84 offset to what was requested */ 85 if (!append && llvmpipe->so_targets[i]) { 86 llvmpipe->so_targets[i]->internal_offset = offsets[i]; 87 } 88 } 89 90 for (; i < llvmpipe->num_so_targets; i++) { 91 pipe_so_target_reference((struct pipe_stream_output_target **)&llvmpipe->so_targets[i], NULL); 92 } 93 llvmpipe->num_so_targets = num_targets; 94 } 95 96 void 97 llvmpipe_init_so_funcs(struct llvmpipe_context *pipe) 98 { 99 pipe->pipe.create_stream_output_target = llvmpipe_create_so_target; 100 pipe->pipe.stream_output_target_destroy = llvmpipe_so_target_destroy; 101 pipe->pipe.set_stream_output_targets = llvmpipe_set_so_targets; 102 } 103
