src/mesa/drivers/dri/gamma/gamma_span.c

   1 /* $XFree86: xc/lib/GL/mesa/src/drv/gamma/gamma_span.c,v 1.4 2002/11/05 17:46:07 tsi Exp $ */
   2
   3 #include "gamma_context.h"
   4 #include "gamma_lock.h"
   5 #include "colormac.h"
   6
   7 #include "swrast/swrast.h"
   8
   9 #define DBG 0
  10
  11 #define LOCAL_VARS                                                      \
  12    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);                          \
  13    gammaScreenPtr gammascrn = gmesa->gammaScreen;                       \
  14    __DRIscreenPrivate *sPriv = gmesa->driScreen;                        \
  15    __DRIdrawablePrivate *dPriv = gmesa->driDrawable;                    \
  16    GLuint pitch = sPriv->fbWidth * gammascrn->cpp;              \
  17    GLuint height = dPriv->h;                                            \
  18    char *buf = (char *)(sPriv->pFB +                                    \
  19                         gmesa->drawOffset +                             \
  20                         (dPriv->x * gammascrn->cpp) +                   \
  21                         (dPriv->y * pitch));                            \
  22    GLuint p;                                                            \
  23    (void) buf; (void) p
  24
  25 /* FIXME! Depth/Stencil read/writes don't work ! */
  26 #define LOCAL_DEPTH_VARS                                \
  27    gammaScreenPtr gammascrn = gmesa->gammaScreen;       \
  28    __DRIdrawablePrivate *dPriv = gmesa->driDrawable;    \
  29    __DRIscreenPrivate *sPriv = gmesa->driScreen;        \
  30    GLuint pitch = gammascrn->depthPitch;                \
  31    GLuint height = dPriv->h;                            \
  32    char *buf = (char *)(sPriv->pFB +                    \
  33                         gammascrn->depthOffset +        \
  34                         dPriv->x * gammascrn->cpp +     \
  35                         dPriv->y * pitch)
  36
  37 #define LOCAL_STENCIL_VARS      LOCAL_DEPTH_VARS
  38
  39 #define Y_FLIP( _y )            (height - _y - 1)
  40
  41 #define HW_LOCK()                                                       \
  42    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);                          \
  43    FLUSH_DMA_BUFFER(gmesa);                                             \
  44    gammaGetLock( gmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );          \
  45    GAMMAHW_LOCK( gmesa );
  46
  47 #define HW_UNLOCK() GAMMAHW_UNLOCK( gmesa )
  48
  49
  50
  51 /* ================================================================
  52  * Color buffer
  53  */
  54
  55 /* 16 bit, RGB565 color spanline and pixel functions
  56  */
  57 #define INIT_MONO_PIXEL(p, color) \
  58   p = PACK_COLOR_565( color[0], color[1], color[2] )
  59
  60 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  61    *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 8) |     \
  62                                            (((int)g & 0xfc) << 3) |     \
  63                                            (((int)b & 0xf8) >> 3))
  64
  65 #define WRITE_PIXEL( _x, _y, p )                                        \
  66    *(GLushort *)(buf + _x*2 + _y*pitch) = p
  67
  68 #define READ_RGBA( rgba, _x, _y )                                       \
  69    do {                                                                 \
  70       GLushort p = *(GLushort *)(buf + _x*2 + _y*pitch);                \
  71       rgba[0] = (p >> 8) & 0xf8;                                        \
  72       rgba[1] = (p >> 3) & 0xfc;                                        \
  73       rgba[2] = (p << 3) & 0xf8;                                        \
  74       rgba[3] = 0xff;                                                   \
  75       if ( rgba[0] & 0x08 ) rgba[0] |= 0x07;                            \
  76       if ( rgba[1] & 0x04 ) rgba[1] |= 0x03;                            \
  77       if ( rgba[2] & 0x08 ) rgba[2] |= 0x07;                            \
  78    } while (0)
  79
  80 #define TAG(x) gamma##x##_RGB565
  81 #include "spantmp.h"
  82
  83
  84 /* 32 bit, ARGB8888 color spanline and pixel functions
  85  */
  86
  87 #undef INIT_MONO_PIXEL
  88 #define INIT_MONO_PIXEL(p, color) \
  89   p = PACK_COLOR_8888( color[3], color[0], color[1], color[2] )
  90
  91 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  92    *(GLuint *)(buf + _x*4 + _y*pitch) = ((b <<  0) |                    \
  93                                          (g <<  8) |                    \
  94                                          (r << 16) |                    \
  95                                          (a << 24) )
  96
  97 #define WRITE_PIXEL( _x, _y, p )                                        \
  98    *(GLuint *)(buf + _x*4 + _y*pitch) = p
  99
 100 #define READ_RGBA( rgba, _x, _y )                                       \
 101 do {                                                                    \
 102    GLuint p = *(GLuint *)(buf + _x*4 + _y*pitch);                       \
 103    rgba[0] = (p >> 16) & 0xff;                                          \
 104    rgba[1] = (p >>  8) & 0xff;                                          \
 105    rgba[2] = (p >>  0) & 0xff;                                          \
 106    rgba[3] = (p >> 24) & 0xff;                                          \
 107 } while (0)
 108
 109 #define TAG(x) gamma##x##_ARGB8888
 110 #include "spantmp.h"
 111
 112
 113 /* 16 bit depthbuffer functions.
 114  */
 115 #define WRITE_DEPTH( _x, _y, d )        \
 116    *(GLushort *)(buf + (_x)*2 + (_y)*pitch) = d;
 117
 118 #define READ_DEPTH( d, _x, _y )         \
 119    d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
 120
 121 #define TAG(x) gamma##x##_16
 122 #include "depthtmp.h"
 123
 124
 125 #if 0 /* Unused */
 126 /* 32 bit depthbuffer functions.
 127  */
 128 #define WRITE_DEPTH( _x, _y, d )        \
 129    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = d;
 130
 131 #define READ_DEPTH( d, _x, _y )         \
 132    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);
 133
 134 #define TAG(x) gamma##x##_32
 135 #include "depthtmp.h"
 136 #endif
 137
 138
 139 /* 24/8 bit interleaved depth/stencil functions
 140  */
 141 #define WRITE_DEPTH( _x, _y, d ) {                      \
 142    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 143    tmp &= 0xff;                                         \
 144    tmp |= (d) & 0xffffff00;                             \
 145    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 146 }
 147
 148 #define READ_DEPTH( d, _x, _y )         \
 149    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) & ~0xff;
 150
 151
 152 #define TAG(x) gamma##x##_24_8
 153 #include "depthtmp.h"
 154
 155 #if 0
 156 #define WRITE_STENCIL( _x, _y, d ) {                    \
 157    GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch);     \
 158    tmp &= 0xffffff00;                                   \
 159    tmp |= d & 0xff;                                     \
 160    *(GLuint *)(buf + _x*4 + _y*pitch) = tmp;            \
 161 }
 162
 163 #define READ_STENCIL( d, _x, _y )               \
 164    d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
 165
 166 #define TAG(x) gamma##x##_24_8
 167 #include "stenciltmp.h"
 168
 169 static void gammaReadRGBASpan8888( const GLcontext *ctx,
 170                                GLuint n, GLint x, GLint y,
 171                                GLubyte rgba[][4])
 172 {
 173    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 174    gammaScreenPtr gammascrn = gmesa->gammaScreen;
 175    u_int32_t dwords1, dwords2, i = 0;
 176    char *src = (char *)rgba[0];
 177    GLuint read = n * gammascrn->cpp; /* Number of bytes we are expecting */
 178    u_int32_t data;
 179
 180    FLUSH_DMA_BUFFER(gmesa);
 181    CHECK_DMA_BUFFER(gmesa, 16);
 182    WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode & ~(LBReadSrcEnable | LBReadDstEnable));
 183    WRITE(gmesa->buf, ColorDDAMode, ColorDDAEnable);
 184    WRITE(gmesa->buf, LBWriteMode, LBWriteModeDisable);
 185    WRITE(gmesa->buf, FBReadMode, (gmesa->FBReadMode & ~FBReadSrcEnable) | FBReadDstEnable | FBDataTypeColor);
 186    WRITE(gmesa->buf, FilterMode, 0x200); /* Pass FBColorData */
 187    WRITE(gmesa->buf, FBWriteMode, FBW_UploadColorData | FBWriteModeDisable);
 188    WRITE(gmesa->buf, StartXSub, (x+n)<<16);
 189    WRITE(gmesa->buf, StartXDom, x<<16);
 190    WRITE(gmesa->buf, StartY, y<<16);
 191    WRITE(gmesa->buf, GLINTCount, 1);
 192    WRITE(gmesa->buf, dXDom, 0<<16);
 193    WRITE(gmesa->buf, dXSub, 0<<16);
 194    WRITE(gmesa->buf, dY, 1<<16);
 195    WRITE(gmesa->buf, Render, PrimitiveTrapezoid);
 196    FLUSH_DMA_BUFFER(gmesa);
 197
 198 moredata:
 199
 200    dwords1 = *(volatile u_int32_t*)(void *)(((u_int8_t*)gammascrn->regions[0].map) + (GlintOutFIFOWords));
 201    dwords2 = *(volatile u_int32_t*)(void *)(((u_int8_t*)gammascrn->regions[2].map) + (GlintOutFIFOWords));
 202
 203    if (dwords1) {
 204         memcpy(src, (char*)gammascrn->regions[1].map + 0x1000, dwords1 << 2);
 205         src += dwords1 << 2;
 206         read -= dwords1 << 2;
 207    }
 208    if (dwords2) {
 209         memcpy(src, (char*)gammascrn->regions[3].map + 0x1000, dwords2 << 2);
 210         src += dwords2 << 2;
 211         read -= dwords2 << 2;
 212    }
 213
 214    if (read)
 215         goto moredata;
 216
 217 done:
 218
 219    CHECK_DMA_BUFFER(gmesa, 6);
 220    WRITE(gmesa->buf, ColorDDAMode, gmesa->ColorDDAMode);
 221    WRITE(gmesa->buf, LBWriteMode, LBWriteModeEnable);
 222    WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode);
 223    WRITE(gmesa->buf, FBReadMode, gmesa->FBReadMode);
 224    WRITE(gmesa->buf, FBWriteMode, FBWriteModeEnable);
 225    WRITE(gmesa->buf, FilterMode, 0x400);
 226 }
 227 #endif
 228
 229 static void gammaSetBuffer( GLcontext *ctx,
 230                             GLframebuffer *colorBuffer,
 231                             GLuint bufferBit )
 232 {
 233    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 234
 235    switch ( bufferBit ) {
 236    case BUFFER_BIT_FRONT_LEFT:
 237       gmesa->readOffset = 0;
 238       break;
 239    case BUFFER_BIT_BACK_LEFT:
 240       gmesa->readOffset = gmesa->driScreen->fbHeight * gmesa->driScreen->fbWidth * gmesa->gammaScreen->cpp;
 241       break;
 242    default:
 243       _mesa_problem(ctx, "Unexpected buffer 0x%x in gammaSetBuffer()", bufferBit);
 244    }
 245 }
 246
 247
 248 void gammaDDInitSpanFuncs( GLcontext *ctx )
 249 {
 250    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 251    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 252
 253    swdd->SetBuffer = gammaSetBuffer;
 254
 255    switch ( gmesa->gammaScreen->cpp ) {
 256    case 2:
 257       swdd->WriteRGBASpan       = gammaWriteRGBASpan_RGB565;
 258       swdd->WriteRGBSpan        = gammaWriteRGBSpan_RGB565;
 259       swdd->WriteMonoRGBASpan   = gammaWriteMonoRGBASpan_RGB565;
 260       swdd->WriteRGBAPixels     = gammaWriteRGBAPixels_RGB565;
 261       swdd->WriteMonoRGBAPixels = gammaWriteMonoRGBAPixels_RGB565;
 262       swdd->ReadRGBASpan        = gammaReadRGBASpan_RGB565;
 263       swdd->ReadRGBAPixels      = gammaReadRGBAPixels_RGB565;
 264       break;
 265
 266    case 4:
 267       swdd->WriteRGBASpan       = gammaWriteRGBASpan_ARGB8888;
 268       swdd->WriteRGBSpan        = gammaWriteRGBSpan_ARGB8888;
 269       swdd->WriteMonoRGBASpan   = gammaWriteMonoRGBASpan_ARGB8888;
 270       swdd->WriteRGBAPixels     = gammaWriteRGBAPixels_ARGB8888;
 271       swdd->WriteMonoRGBAPixels = gammaWriteMonoRGBAPixels_ARGB8888;
 272 #if 1
 273       swdd->ReadRGBASpan        = gammaReadRGBASpan_ARGB8888;
 274 #else
 275       swdd->ReadRGBASpan        = gammaReadRGBASpan8888;
 276 #endif
 277       swdd->ReadRGBAPixels      = gammaReadRGBAPixels_ARGB8888;
 278       break;
 279
 280    default:
 281       break;
 282    }
 283
 284    switch ( gmesa->glCtx->Visual.depthBits ) {
 285    case 16:
 286       swdd->ReadDepthSpan       = gammaReadDepthSpan_16;
 287       swdd->WriteDepthSpan      = gammaWriteDepthSpan_16;
 288       swdd->ReadDepthPixels     = gammaReadDepthPixels_16;
 289       swdd->WriteDepthPixels    = gammaWriteDepthPixels_16;
 290       break;
 291
 292    case 24:
 293       swdd->ReadDepthSpan       = gammaReadDepthSpan_24_8;
 294       swdd->WriteDepthSpan      = gammaWriteDepthSpan_24_8;
 295       swdd->ReadDepthPixels     = gammaReadDepthPixels_24_8;
 296       swdd->WriteDepthPixels    = gammaWriteDepthPixels_24_8;
 297
 298 #if 0
 299       swdd->ReadStencilSpan     = gammaReadStencilSpan_24_8;
 300       swdd->WriteStencilSpan    = gammaWriteStencilSpan_24_8;
 301       swdd->ReadStencilPixels   = gammaReadStencilPixels_24_8;
 302       swdd->WriteStencilPixels  = gammaWriteStencilPixels_24_8;
 303 #endif
 304       break;
 305
 306    default:
 307       break;
 308    }
 309 }