1 /************************************************************************** 2 * 3 * Copyright 2006 Tungsten Graphics, Inc., Cedar Park, Texas. 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 TUNGSTEN GRAPHICS 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 * Authors: 29 * Keith Whitwell <keith (at) tungstengraphics.com> 30 * Michel Dnzer <michel (at) tungstengraphics.com> 31 */ 32 33 #include "pipe/p_context.h" 34 #include "pipe/p_defines.h" 35 #include "util/u_inlines.h" 36 #include "util/u_math.h" 37 #include "util/u_memory.h" 38 39 #include "i915_context.h" 40 #include "i915_resource.h" 41 42 43 44 static boolean 45 i915_buffer_get_handle(struct pipe_screen *screen, 46 struct pipe_resource *resource, 47 struct winsys_handle *handle) 48 { 49 return FALSE; 50 } 51 52 static void 53 i915_buffer_destroy(struct pipe_screen *screen, 54 struct pipe_resource *resource) 55 { 56 struct i915_buffer *buffer = i915_buffer(resource); 57 if (buffer->free_on_destroy) 58 align_free(buffer->data); 59 FREE(buffer); 60 } 61 62 63 static struct pipe_transfer * 64 i915_get_transfer(struct pipe_context *pipe, 65 struct pipe_resource *resource, 66 unsigned level, 67 unsigned usage, 68 const struct pipe_box *box) 69 { 70 struct i915_context *i915 = i915_context(pipe); 71 struct pipe_transfer *transfer = util_slab_alloc(&i915->transfer_pool); 72 73 if (transfer == NULL) 74 return NULL; 75 76 transfer->resource = resource; 77 transfer->level = level; 78 transfer->usage = usage; 79 transfer->box = *box; 80 81 /* Note strides are zero, this is ok for buffers, but not for 82 * textures 2d & higher at least. 83 */ 84 return transfer; 85 } 86 87 static void 88 i915_transfer_destroy(struct pipe_context *pipe, 89 struct pipe_transfer *transfer) 90 { 91 struct i915_context *i915 = i915_context(pipe); 92 util_slab_free(&i915->transfer_pool, transfer); 93 } 94 95 static void * 96 i915_buffer_transfer_map( struct pipe_context *pipe, 97 struct pipe_transfer *transfer ) 98 { 99 struct i915_buffer *buffer = i915_buffer(transfer->resource); 100 return buffer->data + transfer->box.x; 101 } 102 103 104 static void 105 i915_buffer_transfer_inline_write( struct pipe_context *rm_ctx, 106 struct pipe_resource *resource, 107 unsigned level, 108 unsigned usage, 109 const struct pipe_box *box, 110 const void *data, 111 unsigned stride, 112 unsigned layer_stride) 113 { 114 struct i915_buffer *buffer = i915_buffer(resource); 115 116 memcpy(buffer->data + box->x, 117 data, 118 box->width); 119 } 120 121 122 struct u_resource_vtbl i915_buffer_vtbl = 123 { 124 i915_buffer_get_handle, /* get_handle */ 125 i915_buffer_destroy, /* resource_destroy */ 126 i915_get_transfer, /* get_transfer */ 127 i915_transfer_destroy, /* transfer_destroy */ 128 i915_buffer_transfer_map, /* transfer_map */ 129 u_default_transfer_flush_region, /* transfer_flush_region */ 130 u_default_transfer_unmap, /* transfer_unmap */ 131 i915_buffer_transfer_inline_write /* transfer_inline_write */ 132 }; 133 134 135 136 struct pipe_resource * 137 i915_buffer_create(struct pipe_screen *screen, 138 const struct pipe_resource *template) 139 { 140 struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer); 141 142 if (!buf) 143 return NULL; 144 145 buf->b.b = *template; 146 buf->b.vtbl = &i915_buffer_vtbl; 147 pipe_reference_init(&buf->b.b.reference, 1); 148 buf->b.b.screen = screen; 149 buf->data = align_malloc(template->width0, 16); 150 buf->free_on_destroy = TRUE; 151 152 if (!buf->data) 153 goto err; 154 155 return &buf->b.b; 156 157 err: 158 FREE(buf); 159 return NULL; 160 } 161 162 163 164 struct pipe_resource * 165 i915_user_buffer_create(struct pipe_screen *screen, 166 void *ptr, 167 unsigned bytes, 168 unsigned bind) 169 { 170 struct i915_buffer *buf = CALLOC_STRUCT(i915_buffer); 171 172 if (!buf) 173 return NULL; 174 175 pipe_reference_init(&buf->b.b.reference, 1); 176 buf->b.vtbl = &i915_buffer_vtbl; 177 buf->b.b.screen = screen; 178 buf->b.b.format = PIPE_FORMAT_R8_UNORM; /* ?? */ 179 buf->b.b.usage = PIPE_USAGE_IMMUTABLE; 180 buf->b.b.bind = bind; 181 buf->b.b.flags = 0; 182 buf->b.b.width0 = bytes; 183 buf->b.b.height0 = 1; 184 buf->b.b.depth0 = 1; 185 buf->b.b.array_size = 1; 186 187 buf->data = ptr; 188 buf->free_on_destroy = FALSE; 189 190 return &buf->b.b; 191 } 192
