src/mesa/drivers/dri/r300/r300_cmdbuf.h

   1 /*
   2 Copyright (C) The Weather Channel, Inc.  2002.  All Rights Reserved.
   3
   4 The Weather Channel (TM) funded Tungsten Graphics to develop the
   5 initial release of the Radeon 8500 driver under the XFree86 license.
   6 This notice must be preserved.
   7
   8 Permission is hereby granted, free of charge, to any person obtaining
   9 a copy of this software and associated documentation files (the
  10 "Software"), to deal in the Software without restriction, including
  11 without limitation the rights to use, copy, modify, merge, publish,
  12 distribute, sublicense, and/or sell copies of the Software, and to
  13 permit persons to whom the Software is furnished to do so, subject to
  14 the following conditions:
  15
  16 The above copyright notice and this permission notice (including the
  17 next paragraph) shall be included in all copies or substantial
  18 portions of the Software.
  19
  20 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  21 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
  22 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
  23 IN NO EVENT SHALL THE COPYRIGHT OWNER(S) AND/OR ITS SUPPLIERS BE
  24 LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
  25 OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
  26 WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  27
  28 **************************************************************************/
  29
  30 /**
  31  * \file
  32  *
  33  * \author Nicolai Haehnle <prefect_@gmx.net>
  34  */
  35
  36 #ifndef __R300_CMDBUF_H__
  37 #define __R300_CMDBUF_H__
  38
  39 #include "r300_context.h"
  40
  41 extern int r300FlushCmdBufLocked(r300ContextPtr r300, const char *caller);
  42 extern int r300FlushCmdBuf(r300ContextPtr r300, const char *caller);
  43
  44 extern void r300EmitState(r300ContextPtr r300);
  45
  46 extern void r300InitCmdBuf(r300ContextPtr r300);
  47 extern void r300DestroyCmdBuf(r300ContextPtr r300);
  48
  49 /**
  50  * Make sure that enough space is available in the command buffer
  51  * by flushing if necessary.
  52  *
  53  * \param dwords The number of dwords we need to be free on the command buffer
  54  */
  55 static INLINE void r300EnsureCmdBufSpace(r300ContextPtr r300,
  56                                              int dwords, const char *caller)
  57 {
  58         assert(dwords < r300->cmdbuf.size);
  59
  60         if (r300->cmdbuf.count_used + dwords > r300->cmdbuf.size)
  61                 r300FlushCmdBuf(r300, caller);
  62 }
  63
  64 /**
  65  * Allocate the given number of dwords in the command buffer and return
  66  * a pointer to the allocated area.
  67  * When necessary, these functions cause a flush. r300AllocCmdBuf() also
  68  * causes state reemission after a flush. This is necessary to ensure
  69  * correct hardware state after an unlock.
  70  */
  71 static INLINE uint32_t *r300RawAllocCmdBuf(r300ContextPtr r300,
  72                                                int dwords, const char *caller)
  73 {
  74         uint32_t *ptr;
  75
  76         r300EnsureCmdBufSpace(r300, dwords, caller);
  77
  78         ptr = &r300->cmdbuf.cmd_buf[r300->cmdbuf.count_used];
  79         r300->cmdbuf.count_used += dwords;
  80         return ptr;
  81 }
  82
  83 static INLINE uint32_t *r300AllocCmdBuf(r300ContextPtr r300,
  84                                             int dwords, const char *caller)
  85 {
  86         uint32_t *ptr;
  87
  88         r300EnsureCmdBufSpace(r300, dwords, caller);
  89
  90         if (!r300->cmdbuf.count_used) {
  91                 if (RADEON_DEBUG & DEBUG_IOCTL)
  92                         fprintf(stderr,
  93                                 "Reemit state after flush (from %s)\n", caller);
  94                 r300EmitState(r300);
  95         }
  96
  97         ptr = &r300->cmdbuf.cmd_buf[r300->cmdbuf.count_used];
  98         r300->cmdbuf.count_used += dwords;
  99         return ptr;
 100 }
 101
 102 extern void r300EmitBlit(r300ContextPtr rmesa,
 103                          GLuint color_fmt,
 104                          GLuint src_pitch,
 105                          GLuint src_offset,
 106                          GLuint dst_pitch,
 107                          GLuint dst_offset,
 108                          GLint srcx, GLint srcy,
 109                          GLint dstx, GLint dsty, GLuint w, GLuint h);
 110
 111 extern void r300EmitWait(r300ContextPtr rmesa, GLuint flags);
 112 extern void r300EmitLOAD_VBPNTR(r300ContextPtr rmesa, int start);
 113 extern void r300EmitVertexShader(r300ContextPtr rmesa);
 114 extern void r300EmitPixelShader(r300ContextPtr rmesa);
 115
 116 #endif                          /* __R300_CMDBUF_H__ */