1 /********************************************************** 2 * Copyright 2008-2009 VMware, Inc. All rights reserved. 3 * 4 * Permission is hereby granted, free of charge, to any person 5 * obtaining a copy of this software and associated documentation 6 * files (the "Software"), to deal in the Software without 7 * restriction, including without limitation the rights to use, copy, 8 * modify, merge, publish, distribute, sublicense, and/or sell copies 9 * of the Software, and to permit persons to whom the Software is 10 * furnished to do so, subject to the following conditions: 11 * 12 * The above copyright notice and this permission notice shall be 13 * included in all copies or substantial portions of the Software. 14 * 15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, 16 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF 17 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND 18 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS 19 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN 20 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN 21 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE 22 * SOFTWARE. 23 * 24 **********************************************************/ 25 26 #include "util/u_inlines.h" 27 #include "pipe/p_defines.h" 28 #include "util/u_math.h" 29 #include "tgsi/tgsi_parse.h" 30 31 #include "svga_context.h" 32 #include "svga_resource_buffer.h" 33 34 /*********************************************************************** 35 * Constant buffers 36 */ 37 38 struct svga_constbuf 39 { 40 unsigned type; 41 float (*data)[4]; 42 unsigned count; 43 }; 44 45 46 47 static void svga_set_constant_buffer(struct pipe_context *pipe, 48 uint shader, uint index, 49 const struct pipe_constant_buffer *cb) 50 { 51 struct svga_screen *svgascreen = svga_screen(pipe->screen); 52 struct svga_context *svga = svga_context(pipe); 53 struct pipe_resource *buf = cb ? cb->buffer : NULL; 54 unsigned buffer_size = 0; 55 56 if (cb) { 57 buffer_size = cb->buffer_size; 58 if (cb->user_buffer) { 59 buf = svga_user_buffer_create(pipe->screen, 60 (void *) cb->user_buffer, 61 cb->buffer_size, 62 PIPE_BIND_CONSTANT_BUFFER); 63 } 64 } 65 66 assert(shader < PIPE_SHADER_TYPES); 67 assert(index < ARRAY_SIZE(svga->curr.constbufs[shader])); 68 assert(index < svgascreen->max_const_buffers); 69 (void) svgascreen; 70 71 pipe_resource_reference(&svga->curr.constbufs[shader][index].buffer, buf); 72 73 /* Make sure the constant buffer size to be updated is within the 74 * limit supported by the device. 75 */ 76 svga->curr.constbufs[shader][index].buffer_size = 77 MIN2(buffer_size, SVGA_MAX_CONST_BUF_SIZE); 78 79 svga->curr.constbufs[shader][index].buffer_offset = cb ? cb->buffer_offset : 0; 80 svga->curr.constbufs[shader][index].user_buffer = NULL; /* not used */ 81 82 if (shader == PIPE_SHADER_FRAGMENT) 83 svga->dirty |= SVGA_NEW_FS_CONST_BUFFER; 84 else if (shader == PIPE_SHADER_VERTEX) 85 svga->dirty |= SVGA_NEW_VS_CONST_BUFFER; 86 else 87 svga->dirty |= SVGA_NEW_GS_CONST_BUFFER; 88 89 /* update bitmask of dirty const buffers */ 90 svga->state.dirty_constbufs[shader] |= (1 << index); 91 92 if (cb && cb->user_buffer) { 93 pipe_resource_reference(&buf, NULL); 94 } 95 } 96 97 98 99 void svga_init_constbuffer_functions( struct svga_context *svga ) 100 { 101 svga->pipe.set_constant_buffer = svga_set_constant_buffer; 102 } 103 104
