src/mesa/drivers/dri/i965/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 #include "intel_regions.h"
  35 #include "intel_span.h"
  36 #include "intel_ioctl.h"
  37 #include "intel_tex.h"
  38 #include "swrast/swrast.h"
  39
  40 #undef DBG
  41 #define DBG 0
  42
  43 #define LOCAL_VARS                                              \
  44    struct intel_context *intel = intel_context(ctx);                    \
  45    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
  46    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
  47    GLuint pitch = drb->pitch;                                   \
  48    GLuint height = dPriv->h;                                    \
  49    char *buf = (char *) drb->Base.Data +                        \
  50                         dPriv->x * drb->cpp +                   \
  51                         dPriv->y * pitch;                       \
  52    GLushort p;                                                  \
  53    (void) buf; (void) p
  54
  55 #define LOCAL_DEPTH_VARS                                        \
  56    struct intel_context *intel = intel_context(ctx);                    \
  57    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
  58    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
  59    GLuint pitch = drb->pitch;                                   \
  60    GLuint height = dPriv->h;                                    \
  61    char *buf = (char *) drb->Base.Data +                        \
  62                         dPriv->x * drb->cpp +                   \
  63                         dPriv->y * pitch
  64
  65 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  66
  67 #define INIT_MONO_PIXEL(p,color)\
  68          p = INTEL_PACKCOLOR565(color[0],color[1],color[2])
  69
  70 #define Y_FLIP(_y) (height - _y - 1)
  71
  72 #define HW_LOCK()
  73
  74 #define HW_UNLOCK()
  75
  76 /* 16 bit, 565 rgb color spanline and pixel functions
  77  */
  78 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  79    *(GLushort *)(buf + _x*2 + _y*pitch)  = ( (((int)r & 0xf8) << 8) |   \
  80                                              (((int)g & 0xfc) << 3) |   \
  81                                              (((int)b & 0xf8) >> 3))
  82 #define WRITE_PIXEL( _x, _y, p )  \
  83    *(GLushort *)(buf + _x*2 + _y*pitch) = p
  84
  85 #define READ_RGBA( rgba, _x, _y )                               \
  86 do {                                                            \
  87    GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch);           \
  88    rgba[0] = (((p >> 11) & 0x1f) * 255) / 31;                   \
  89    rgba[1] = (((p >>  5) & 0x3f) * 255) / 63;                   \
  90    rgba[2] = (((p >>  0) & 0x1f) * 255) / 31;                   \
  91    rgba[3] = 255;                                               \
  92 } while(0)
  93
  94 #define TAG(x) intel##x##_565
  95 #include "spantmp.h"
  96
  97 /* 15 bit, 555 rgb color spanline and pixel functions
  98  */
  99 #define WRITE_RGBA( _x, _y, r, g, b, a )                        \
 100    *(GLushort *)(buf + _x*2 + _y*pitch)  = (((r & 0xf8) << 7) | \
 101                                             ((g & 0xf8) << 3) | \
 102                                             ((b & 0xf8) >> 3))
 103
 104 #define WRITE_PIXEL( _x, _y, p )  \
 105    *(GLushort *)(buf + _x*2 + _y*pitch)  = p
 106
 107 #define READ_RGBA( rgba, _x, _y )                               \
 108 do {                                                            \
 109    GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch);           \
 110    rgba[0] = (p >> 7) & 0xf8;                                   \
 111    rgba[1] = (p >> 3) & 0xf8;                                   \
 112    rgba[2] = (p << 3) & 0xf8;                                   \
 113    rgba[3] = 255;                                               \
 114 } while(0)
 115
 116 #define TAG(x) intel##x##_555
 117 #include "spantmp.h"
 118
 119 /* 16 bit depthbuffer functions.
 120  */
 121 #define WRITE_DEPTH( _x, _y, d ) \
 122    *(GLushort *)(buf + (_x)*2 + (_y)*pitch)  = d;
 123
 124 #define READ_DEPTH( d, _x, _y ) \
 125    d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
 126
 127
 128 #define TAG(x) intel##x##_z16
 129 #include "depthtmp.h"
 130
 131
 132 #undef LOCAL_VARS
 133 #define LOCAL_VARS                                              \
 134    struct intel_context *intel = intel_context(ctx);                    \
 135    __DRIdrawablePrivate *dPriv = intel->driDrawable;            \
 136    driRenderbuffer *drb = (driRenderbuffer *) rb;               \
 137    GLuint pitch = drb->pitch;                                   \
 138    GLuint height = dPriv->h;                                    \
 139    char *buf = (char *)drb->Base.Data +                         \
 140                         dPriv->x * drb->cpp +                   \
 141                         dPriv->y * pitch;                       \
 142    GLuint p;                                                    \
 143    (void) buf; (void) p
 144
 145 #undef INIT_MONO_PIXEL
 146 #define INIT_MONO_PIXEL(p,color)\
 147          p = INTEL_PACKCOLOR8888(color[0],color[1],color[2],color[3])
 148
 149 /* 32 bit, 8888 argb color spanline and pixel functions
 150  */
 151 #define WRITE_RGBA(_x, _y, r, g, b, a)                  \
 152     *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) |   \
 153                                           (g << 8)  |   \
 154                                           (b << 0)  |   \
 155                                           (a << 24) )
 156
 157 #define WRITE_PIXEL(_x, _y, p)                  \
 158     *(GLuint *)(buf + _x*4 + _y*pitch) = p
 159
 160
 161 #define READ_RGBA(rgba, _x, _y)                                 \
 162     do {                                                        \
 163         GLuint p = *(GLuint *)(buf + _x*4 + _y*pitch);          \
 164         rgba[0] = (p >> 16) & 0xff;                             \
 165         rgba[1] = (p >> 8)  & 0xff;                             \
 166         rgba[2] = (p >> 0)  & 0xff;                             \
 167         rgba[3] = (p >> 24) & 0xff;                             \
 168     } while (0)
 169
 170 #define TAG(x) intel##x##_8888
 171 #include "spantmp.h"
 172
 173
 174 /* 24/8 bit interleaved depth/stencil functions
 175  */
 176 #define WRITE_DEPTH( _x, _y, d ) {                      \
 177    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 178    tmp &= 0xff000000;                                   \
 179    tmp |= (d) & 0xffffff;                               \
 180    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 181 }
 182
 183 #define READ_DEPTH( d, _x, _y )         \
 184    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) & 0xffffff;
 185
 186
 187 #define TAG(x) intel##x##_z24_s8
 188 #include "depthtmp.h"
 189
 190 #define WRITE_STENCIL( _x, _y, d ) {                    \
 191    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 192    tmp &= 0xffffff;                                     \
 193    tmp |= ((d)<<24);                                    \
 194    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 195 }
 196
 197 #define READ_STENCIL( d, _x, _y )                       \
 198    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) >> 24;
 199
 200 #define TAG(x) intel##x##_z24_s8
 201 #include "stenciltmp.h"
 202
 203
 204 /* Move locking out to get reasonable span performance.
 205  */
 206 void intelSpanRenderStart( GLcontext *ctx )
 207 {
 208    struct intel_context *intel = intel_context(ctx);
 209
 210    LOCK_HARDWARE(intel);
 211
 212    /* Just map the framebuffer and all textures.  Bufmgr code will
 213     * take care of waiting on the necessary fences:
 214     */
 215    intel_region_map(intel, intel->front_region);
 216    intel_region_map(intel, intel->back_region);
 217    intel_region_map(intel, intel->depth_region);
 218 }
 219
 220 void intelSpanRenderFinish( GLcontext *ctx )
 221 {
 222    struct intel_context *intel = intel_context( ctx );
 223
 224    _swrast_flush( ctx );
 225
 226    /* Now unmap the framebuffer:
 227     */
 228    intel_region_unmap(intel, intel->front_region);
 229    intel_region_unmap(intel, intel->back_region);
 230    intel_region_unmap(intel, intel->depth_region);
 231
 232    UNLOCK_HARDWARE( intel );
 233 }
 234
 235 void intelInitSpanFuncs( GLcontext *ctx )
 236 {
 237    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 238    swdd->SpanRenderStart = intelSpanRenderStart;
 239    swdd->SpanRenderFinish = intelSpanRenderFinish;
 240 }
 241
 242
 243 /**
 244  * Plug in the Get/Put routines for the given driRenderbuffer.
 245  */
 246 void
 247 intelSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
 248 {
 249    if (drb->Base.InternalFormat == GL_RGBA) {
 250       if (vis->redBits == 5 && vis->greenBits == 5 && vis->blueBits == 5) {
 251          intelInitPointers_555(&drb->Base);
 252       }
 253       else if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
 254          intelInitPointers_565(&drb->Base);
 255       }
 256       else {
 257          assert(vis->redBits == 8);
 258          assert(vis->greenBits == 8);
 259          assert(vis->blueBits == 8);
 260          intelInitPointers_8888(&drb->Base);
 261       }
 262    }
 263    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
 264       intelInitDepthPointers_z16(&drb->Base);
 265    }
 266    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
 267       intelInitDepthPointers_z24_s8(&drb->Base);
 268    }
 269    else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
 270       intelInitStencilPointers_z24_s8(&drb->Base);
 271    }
 272 }