src/mesa/drivers/dri/i915/intel_span.c

   1 /**************************************************************************
   2  *
   3  * Copyright 2003 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 #include "glheader.h"
  29 #include "macros.h"
  30 #include "mtypes.h"
  31 #include "colormac.h"
  32
  33 #include "intel_screen.h"
  34
  35 #include "intel_span.h"
  36 #include "intel_ioctl.h"
  37 #include "swrast/swrast.h"
  38
  39
  40 #define DBG 0
  41
  42 #define LOCAL_VARS                                              \
  43    intelContextPtr intel = INTEL_CONTEXT(ctx);                  \
  44    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
  45    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
  46    GLuint pitch = drb->pitch;                                   \
  47    GLuint height = dPriv->h;                                    \
  48    char *buf = (char *) drb->Base.Data +                        \
  49                         dPriv->x * drb->cpp +                   \
  50                         dPriv->y * pitch;                       \
  51    GLushort p;                                                  \
  52    (void) buf; (void) p
  53
  54 #define LOCAL_DEPTH_VARS                                        \
  55    intelContextPtr intel = INTEL_CONTEXT(ctx);                  \
  56    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
  57    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
  58    GLuint pitch = drb->pitch;                                   \
  59    GLuint height = dPriv->h;                                    \
  60    char *buf = (char *) drb->Base.Data +                        \
  61                         dPriv->x * drb->cpp +                   \
  62                         dPriv->y * pitch
  63
  64 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  65
  66 #define INIT_MONO_PIXEL(p,color)\
  67          p = INTEL_PACKCOLOR565(color[0],color[1],color[2])
  68
  69 #define Y_FLIP(_y) (height - _y - 1)
  70
  71 #define HW_LOCK()
  72
  73 #define HW_UNLOCK()
  74
  75 /* 16 bit, 565 rgb color spanline and pixel functions
  76  */
  77 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  78    *(GLushort *)(buf + _x*2 + _y*pitch)  = ( (((int)r & 0xf8) << 8) |   \
  79                                              (((int)g & 0xfc) << 3) |   \
  80                                              (((int)b & 0xf8) >> 3))
  81 #define WRITE_PIXEL( _x, _y, p )  \
  82    *(GLushort *)(buf + _x*2 + _y*pitch) = p
  83
  84 #define READ_RGBA( rgba, _x, _y )                               \
  85 do {                                                            \
  86    GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch);           \
  87    rgba[0] = (((p >> 11) & 0x1f) * 255) / 31;                   \
  88    rgba[1] = (((p >>  5) & 0x3f) * 255) / 63;                   \
  89    rgba[2] = (((p >>  0) & 0x1f) * 255) / 31;                   \
  90    rgba[3] = 255;                                               \
  91 } while(0)
  92
  93 #define TAG(x) intel##x##_565
  94 #include "spantmp.h"
  95
  96 /* 15 bit, 555 rgb color spanline and pixel functions
  97  */
  98 #define WRITE_RGBA( _x, _y, r, g, b, a )                        \
  99    *(GLushort *)(buf + _x*2 + _y*pitch)  = (((r & 0xf8) << 7) | \
 100                                             ((g & 0xf8) << 3) | \
 101                                             ((b & 0xf8) >> 3))
 102
 103 #define WRITE_PIXEL( _x, _y, p )  \
 104    *(GLushort *)(buf + _x*2 + _y*pitch)  = p
 105
 106 #define READ_RGBA( rgba, _x, _y )                               \
 107 do {                                                            \
 108    GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch);           \
 109    rgba[0] = (p >> 7) & 0xf8;                                   \
 110    rgba[1] = (p >> 3) & 0xf8;                                   \
 111    rgba[2] = (p << 3) & 0xf8;                                   \
 112    rgba[3] = 255;                                               \
 113 } while(0)
 114
 115 #define TAG(x) intel##x##_555
 116 #include "spantmp.h"
 117
 118 /* 16 bit depthbuffer functions.
 119  */
 120 #define WRITE_DEPTH( _x, _y, d ) \
 121    *(GLushort *)(buf + (_x)*2 + (_y)*pitch)  = d;
 122
 123 #define READ_DEPTH( d, _x, _y ) \
 124    d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
 125
 126
 127 #define TAG(x) intel##x##_z16
 128 #include "depthtmp.h"
 129
 130
 131 #undef LOCAL_VARS
 132 #define LOCAL_VARS                                              \
 133    intelContextPtr intel = INTEL_CONTEXT(ctx);                  \
 134    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
 135    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
 136    GLuint pitch = drb->pitch;                                   \
 137    GLuint height = dPriv->h;                                    \
 138    char *buf = (char *)drb->Base.Data +                         \
 139                         dPriv->x * drb->cpp +                   \
 140                         dPriv->y * pitch;                       \
 141    GLuint p;                                                    \
 142    (void) buf; (void) p
 143
 144 #undef INIT_MONO_PIXEL
 145 #define INIT_MONO_PIXEL(p,color)\
 146          p = INTEL_PACKCOLOR8888(color[0],color[1],color[2],color[3])
 147
 148 /* 32 bit, 8888 argb color spanline and pixel functions
 149  */
 150 #define WRITE_RGBA(_x, _y, r, g, b, a)                  \
 151     *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) |   \
 152                                           (g << 8)  |   \
 153                                           (b << 0)  |   \
 154                                           (a << 24) )
 155
 156 #define WRITE_PIXEL(_x, _y, p)                  \
 157     *(GLuint *)(buf + _x*4 + _y*pitch) = p
 158
 159
 160 #define READ_RGBA(rgba, _x, _y)                                 \
 161     do {                                                        \
 162         GLuint p = *(GLuint *)(buf + _x*4 + _y*pitch);          \
 163         rgba[0] = (p >> 16) & 0xff;                             \
 164         rgba[1] = (p >> 8)  & 0xff;                             \
 165         rgba[2] = (p >> 0)  & 0xff;                             \
 166         rgba[3] = (p >> 24) & 0xff;                             \
 167     } while (0)
 168
 169 #define TAG(x) intel##x##_8888
 170 #include "spantmp.h"
 171
 172
 173 /* 24/8 bit interleaved depth/stencil functions
 174  */
 175 #define WRITE_DEPTH( _x, _y, d ) {                      \
 176    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 177    tmp &= 0xff000000;                                   \
 178    tmp |= (d) & 0xffffff;                               \
 179    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 180 }
 181
 182 #define READ_DEPTH( d, _x, _y )         \
 183    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) & 0xffffff;
 184
 185
 186 #define TAG(x) intel##x##_z24_s8
 187 #include "depthtmp.h"
 188
 189 #define WRITE_STENCIL( _x, _y, d ) {                    \
 190    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 191    tmp &= 0xffffff;                                     \
 192    tmp |= ((d)<<24);                                    \
 193    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 194 }
 195
 196 #define READ_STENCIL( d, _x, _y )                       \
 197    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) >> 24;
 198
 199 #define TAG(x) intel##x##_z24_s8
 200 #include "stenciltmp.h"
 201
 202
 203 /* Move locking out to get reasonable span performance.
 204  */
 205 void intelSpanRenderStart( GLcontext *ctx )
 206 {
 207    intelContextPtr intel = INTEL_CONTEXT(ctx);
 208
 209    intelFlush(&intel->ctx);
 210    LOCK_HARDWARE(intel);
 211    intelWaitForIdle(intel);
 212 }
 213
 214 void intelSpanRenderFinish( GLcontext *ctx )
 215 {
 216    intelContextPtr intel = INTEL_CONTEXT( ctx );
 217    _swrast_flush( ctx );
 218    UNLOCK_HARDWARE( intel );
 219 }
 220
 221 void intelInitSpanFuncs( GLcontext *ctx )
 222 {
 223    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 224    swdd->SpanRenderStart = intelSpanRenderStart;
 225    swdd->SpanRenderFinish = intelSpanRenderFinish;
 226 }
 227
 228
 229 /**
 230  * Plug in the Get/Put routines for the given driRenderbuffer.
 231  */
 232 void
 233 intelSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
 234 {
 235    if (drb->Base.InternalFormat == GL_RGBA) {
 236       if (vis->redBits == 5 && vis->greenBits == 5 && vis->blueBits == 5) {
 237          intelInitPointers_555(&drb->Base);
 238       }
 239       else if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
 240          intelInitPointers_565(&drb->Base);
 241       }
 242       else {
 243          assert(vis->redBits == 8);
 244          assert(vis->greenBits == 8);
 245          assert(vis->blueBits == 8);
 246          intelInitPointers_8888(&drb->Base);
 247       }
 248    }
 249    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
 250       intelInitDepthPointers_z16(&drb->Base);
 251    }
 252    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
 253       intelInitDepthPointers_z24_s8(&drb->Base);
 254    }
 255    else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
 256       intelInitStencilPointers_z24_s8(&drb->Base);
 257    }
 258 }