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
  28 /*
  29  * Authors:
  30  *   Sung-Ching Lin <sclin@sis.com.tw>
  31  *   Eric Anholt <anholt@FreeBSD.org>
  32  */
  33
  34 #include "sis_context.h"
  35 #include "sis_span.h"
  36 #include "sis_lock.h"
  37 #include "sis_tris.h"
  38
  39 #include "swrast/swrast.h"
  40
  41 #define DBG 0
  42
  43 #define LOCAL_VARS                                                      \
  44    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  45    __DRIdrawable *dPriv = smesa->driDrawable;                   \
  46    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  47    GLuint pitch = srb->pitch;                                           \
  48    char *buf = srb->map;                                                \
  49    GLuint p;                                                            \
  50    (void) buf; (void) p;
  51
  52
  53 #define LOCAL_DEPTH_VARS                                                \
  54    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  55    __DRIdrawable *dPriv = smesa->driDrawable;                   \
  56    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  57    char *buf = srb->map;
  58
  59 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  60
  61 #define HW_LOCK() do {} while(0);
  62
  63 #define HW_UNLOCK() do {} while(0);
  64
  65 /* RGB565 */
  66 #define SPANTMP_PIXEL_FMT GL_RGB
  67 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  68
  69 #define TAG(x)    sis##x##_RGB565
  70 #define TAG2(x,y) sis##x##_RGB565##y
  71 #include "spantmp2.h"
  72
  73
  74 /* ARGB8888 */
  75 /* FIXME the old code always read back alpha as 0xff, i.e. fully opaque.
  76    Was there a reason to do so ? If so that'll won't work with that template... */
  77 #define SPANTMP_PIXEL_FMT GL_BGRA
  78 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  79
  80 #define TAG(x)    sis##x##_ARGB8888
  81 #define TAG2(x,y) sis##x##_ARGB8888##y
  82 #include "spantmp2.h"
  83
  84
  85 /* 16 bit depthbuffer functions.
  86  */
  87 #define VALUE_TYPE GLushort
  88
  89 #define WRITE_DEPTH( _x, _y, d )        \
  90    *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch) = d;
  91
  92 #define READ_DEPTH( d, _x, _y )         \
  93    d = *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch);
  94
  95 #define TAG(x) sis##x##_z16
  96 #include "depthtmp.h"
  97
  98
  99 /* 32 bit depthbuffer functions.
 100  */
 101 #define VALUE_TYPE GLuint
 102
 103 #define WRITE_DEPTH( _x, _y, d )        \
 104    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = d;
 105
 106 #define READ_DEPTH( d, _x, _y )         \
 107    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);
 108
 109 #define TAG(x) sis##x##_z32
 110 #include "depthtmp.h"
 111
 112
 113 /* 8/24 bit interleaved depth/stencil functions
 114  */
 115 #define VALUE_TYPE GLuint
 116
 117 #define WRITE_DEPTH( _x, _y, d ) {                              \
 118    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);    \
 119    tmp &= 0xff000000;                                           \
 120    tmp |= (d & 0x00ffffff);                                     \
 121    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;           \
 122 }
 123
 124 #define READ_DEPTH( d, _x, _y ) {                               \
 125    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0x00ffffff; \
 126 }
 127
 128 #define TAG(x) sis##x##_z24_s8
 129 #include "depthtmp.h"
 130
 131 #define WRITE_STENCIL( _x, _y, d ) {                            \
 132    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*smesa->depth.pitch); \
 133    tmp &= 0x00ffffff;                                           \
 134    tmp |= (d << 24);                                            \
 135    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;   \
 136 }
 137
 138 #define READ_STENCIL( d, _x, _y )                       \
 139    d = (*(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0xff000000) >> 24;
 140
 141 #define TAG(x) sis##x##_z24_s8
 142 #include "stenciltmp.h"
 143
 144
 145
 146 void sisSpanRenderStart( GLcontext *ctx )
 147 {
 148    sisContextPtr smesa = SIS_CONTEXT(ctx);
 149
 150    SIS_FIREVERTICES(smesa);
 151    LOCK_HARDWARE();
 152    WaitEngIdle( smesa );
 153 }
 154
 155 void sisSpanRenderFinish( GLcontext *ctx )
 156 {
 157    sisContextPtr smesa = SIS_CONTEXT(ctx);
 158
 159    _swrast_flush( ctx );
 160    UNLOCK_HARDWARE();
 161 }
 162
 163 void
 164 sisDDInitSpanFuncs( GLcontext *ctx )
 165 {
 166    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 167    swdd->SpanRenderStart   = sisSpanRenderStart;
 168    swdd->SpanRenderFinish  = sisSpanRenderFinish;
 169 }
 170
 171
 172
 173 /**
 174  * Plug in the Get/Put routines for the given driRenderbuffer.
 175  */
 176 void
 177 sisSetSpanFunctions(struct sis_renderbuffer *srb, const GLvisual *vis)
 178 {
 179    if (srb->Base.Format == MESA_FORMAT_RGB565) {
 180       sisInitPointers_RGB565( &srb->Base );
 181    }
 182    else if (srb->Base.Format == MESA_FORMAT_ARGB8888) {
 183       sisInitPointers_ARGB8888( &srb->Base );
 184    }
 185    else if (srb->Base.Format == MESA_FORMAT_Z16) {
 186       sisInitDepthPointers_z16(&srb->Base);
 187    }
 188    else if (srb->Base.Format == MESA_FORMAT_S8_Z24) {
 189       sisInitDepthPointers_z24_s8(&srb->Base);
 190    }
 191    else if (srb->Base.Format == MESA_FORMAT_Z32) {
 192       sisInitDepthPointers_z32(&srb->Base);
 193    }
 194    else if (srb->Base.Format == MESA_FORMAT_S8) {
 195       sisInitStencilPointers_z24_s8(&srb->Base);
 196    }
 197 }