src/mesa/drivers/dri/sis/sis_span.c

   1 /**************************************************************************
   2
   3 Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
   4 Copyright 2003 Eric Anholt
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27 /* $XFree86: xc/lib/GL/mesa/src/drv/sis/sis_span.c,v 1.5 2001/03/21 16:14:26 dawes Exp $ */
  28
  29 /*
  30  * Authors:
  31  *   Sung-Ching Lin <sclin@sis.com.tw>
  32  *   Eric Anholt <anholt@FreeBSD.org>
  33  */
  34
  35 #include "sis_context.h"
  36 #include "sis_span.h"
  37 #include "sis_lock.h"
  38 #include "sis_tris.h"
  39
  40 #include "swrast/swrast.h"
  41
  42 #define DBG 0
  43
  44 #define LOCAL_VARS                                                      \
  45    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  46    __DRIdrawablePrivate *dPriv = smesa->driDrawable;                    \
  47    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  48    GLuint pitch = srb->pitch;                                           \
  49    char *buf = srb->map;                                                \
  50    GLuint p;                                                            \
  51    (void) buf; (void) p;
  52
  53
  54 #define LOCAL_DEPTH_VARS                                                \
  55    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  56    __DRIdrawablePrivate *dPriv = smesa->driDrawable;                    \
  57    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  58    char *buf = srb->map;
  59
  60 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  61
  62 #define HW_LOCK() do {} while(0);
  63
  64 #define HW_UNLOCK() do {} while(0);
  65
  66 /* RGB565 */
  67 #define SPANTMP_PIXEL_FMT GL_RGB
  68 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  69
  70 #define TAG(x)    sis##x##_RGB565
  71 #define TAG2(x,y) sis##x##_RGB565##y
  72 #include "spantmp2.h"
  73
  74
  75 /* ARGB8888 */
  76 /* FIXME the old code always read back alpha as 0xff, i.e. fully opaque.
  77    Was there a reason to do so ? If so that'll won't work with that template... */
  78 #define SPANTMP_PIXEL_FMT GL_BGRA
  79 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  80
  81 #define TAG(x)    sis##x##_ARGB8888
  82 #define TAG2(x,y) sis##x##_ARGB8888##y
  83 #include "spantmp2.h"
  84
  85
  86 /* 16 bit depthbuffer functions.
  87  */
  88 #define WRITE_DEPTH( _x, _y, d )        \
  89    *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch) = d;
  90
  91 #define READ_DEPTH( d, _x, _y )         \
  92    d = *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch);
  93
  94 #define TAG(x) sis##x##_z16
  95 #include "depthtmp.h"
  96
  97
  98 /* 32 bit depthbuffer functions.
  99  */
 100 #define WRITE_DEPTH( _x, _y, d )        \
 101    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = d;
 102
 103 #define READ_DEPTH( d, _x, _y )         \
 104    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);
 105
 106 #define TAG(x) sis##x##_z32
 107 #include "depthtmp.h"
 108
 109
 110 /* 8/24 bit interleaved depth/stencil functions
 111  */
 112 #define WRITE_DEPTH( _x, _y, d ) {                              \
 113    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);    \
 114    tmp &= 0xff000000;                                           \
 115    tmp |= (d & 0x00ffffff);                                     \
 116    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;           \
 117 }
 118
 119 #define READ_DEPTH( d, _x, _y ) {                               \
 120    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0x00ffffff; \
 121 }
 122
 123 #define TAG(x) sis##x##_z24_s8
 124 #include "depthtmp.h"
 125
 126 #define WRITE_STENCIL( _x, _y, d ) {                            \
 127    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*smesa->depth.pitch); \
 128    tmp &= 0x00ffffff;                                           \
 129    tmp |= (d << 24);                                            \
 130    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;   \
 131 }
 132
 133 #define READ_STENCIL( d, _x, _y )                       \
 134    d = (*(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0xff000000) >> 24;
 135
 136 #define TAG(x) sis##x##_z24_s8
 137 #include "stenciltmp.h"
 138
 139
 140
 141 void sisSpanRenderStart( GLcontext *ctx )
 142 {
 143    sisContextPtr smesa = SIS_CONTEXT(ctx);
 144
 145    SIS_FIREVERTICES(smesa);
 146    LOCK_HARDWARE();
 147    WaitEngIdle( smesa );
 148 }
 149
 150 void sisSpanRenderFinish( GLcontext *ctx )
 151 {
 152    sisContextPtr smesa = SIS_CONTEXT(ctx);
 153
 154    _swrast_flush( ctx );
 155    UNLOCK_HARDWARE();
 156 }
 157
 158 void
 159 sisDDInitSpanFuncs( GLcontext *ctx )
 160 {
 161    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 162    swdd->SpanRenderStart   = sisSpanRenderStart;
 163    swdd->SpanRenderFinish  = sisSpanRenderFinish;
 164 }
 165
 166
 167
 168 /**
 169  * Plug in the Get/Put routines for the given driRenderbuffer.
 170  */
 171 void
 172 sisSetSpanFunctions(struct sis_renderbuffer *srb, const GLvisual *vis)
 173 {
 174    if (srb->Base.InternalFormat == GL_RGBA) {
 175       if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
 176          sisInitPointers_RGB565( &srb->Base );
 177       }
 178       else {
 179          sisInitPointers_ARGB8888( &srb->Base );
 180       }
 181    }
 182    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
 183       sisInitDepthPointers_z16(&srb->Base);
 184    }
 185    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
 186       sisInitDepthPointers_z24_s8(&srb->Base);
 187    }
 188    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT32) {
 189       sisInitDepthPointers_z32(&srb->Base);
 190    }
 191    else if (srb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
 192       sisInitStencilPointers_z24_s8(&srb->Base);
 193    }
 194 }