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    char *read_buf = (char *)(sPriv->pFB +                               \
  23                              gmesa->readOffset +                        \
  24                              (dPriv->x * gammascrn->cpp) +              \
  25                              (dPriv->y * pitch));                       \
  26    GLuint p;                                                            \
  27    (void) read_buf; (void) buf; (void) p
  28
  29 /* FIXME! Depth/Stencil read/writes don't work ! */
  30 #define LOCAL_DEPTH_VARS                                \
  31    gammaScreenPtr gammascrn = gmesa->gammaScreen;       \
  32    __DRIdrawablePrivate *dPriv = gmesa->driDrawable;    \
  33    __DRIscreenPrivate *sPriv = gmesa->driScreen;        \
  34    GLuint pitch = gammascrn->depthPitch;                \
  35    GLuint height = dPriv->h;                            \
  36    char *buf = (char *)(sPriv->pFB +                    \
  37                         gammascrn->depthOffset +        \
  38                         dPriv->x * gammascrn->cpp +     \
  39                         dPriv->y * pitch)
  40
  41 #define LOCAL_STENCIL_VARS      LOCAL_DEPTH_VARS
  42
  43 #define Y_FLIP( _y )            (height - _y - 1)
  44
  45 #define HW_LOCK()                                                       \
  46    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);                          \
  47    FLUSH_DMA_BUFFER(gmesa);                                             \
  48    gammaGetLock( gmesa, DRM_LOCK_FLUSH | DRM_LOCK_QUIESCENT );          \
  49    GAMMAHW_LOCK( gmesa );
  50
  51 #define HW_UNLOCK() GAMMAHW_UNLOCK( gmesa )
  52
  53
  54
  55 /* ================================================================
  56  * Color buffer
  57  */
  58
  59 /* 16 bit, RGB565 color spanline and pixel functions
  60  */
  61 #define INIT_MONO_PIXEL(p, color) \
  62   p = PACK_COLOR_565( color[0], color[1], color[2] )
  63
  64 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  65    *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 8) |     \
  66                                            (((int)g & 0xfc) << 3) |     \
  67                                            (((int)b & 0xf8) >> 3))
  68
  69 #define WRITE_PIXEL( _x, _y, p )                                        \
  70    *(GLushort *)(buf + _x*2 + _y*pitch) = p
  71
  72 #define READ_RGBA( rgba, _x, _y )                                       \
  73    do {                                                                 \
  74       GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch);           \
  75       rgba[0] = (p >> 8) & 0xf8;                                        \
  76       rgba[1] = (p >> 3) & 0xfc;                                        \
  77       rgba[2] = (p << 3) & 0xf8;                                        \
  78       rgba[3] = 0xff;                                                   \
  79       if ( rgba[0] & 0x08 ) rgba[0] |= 0x07;                            \
  80       if ( rgba[1] & 0x04 ) rgba[1] |= 0x03;                            \
  81       if ( rgba[2] & 0x08 ) rgba[2] |= 0x07;                            \
  82    } while (0)
  83
  84 #define TAG(x) gamma##x##_RGB565
  85 #include "spantmp.h"
  86
  87
  88 /* 32 bit, ARGB8888 color spanline and pixel functions
  89  */
  90
  91 #undef INIT_MONO_PIXEL
  92 #define INIT_MONO_PIXEL(p, color) \
  93   p = PACK_COLOR_8888( color[3], color[0], color[1], color[2] )
  94
  95 #define WRITE_RGBA( _x, _y, r, g, b, a )                                \
  96    *(GLuint *)(buf + _x*4 + _y*pitch) = ((b <<  0) |                    \
  97                                          (g <<  8) |                    \
  98                                          (r << 16) |                    \
  99                                          (a << 24) )
 100
 101 #define WRITE_PIXEL( _x, _y, p )                                        \
 102    *(GLuint *)(buf + _x*4 + _y*pitch) = p
 103
 104 #define READ_RGBA( rgba, _x, _y )                                       \
 105 do {                                                                    \
 106    GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch);                  \
 107    rgba[0] = (p >> 16) & 0xff;                                          \
 108    rgba[1] = (p >>  8) & 0xff;                                          \
 109    rgba[2] = (p >>  0) & 0xff;                                          \
 110    rgba[3] = (p >> 24) & 0xff;                                          \
 111 } while (0)
 112
 113 #define TAG(x) gamma##x##_ARGB8888
 114 #include "spantmp.h"
 115
 116
 117 /* 16 bit depthbuffer functions.
 118  */
 119 #define WRITE_DEPTH( _x, _y, d )        \
 120    *(GLushort *)(buf + (_x)*2 + (_y)*pitch) = d;
 121
 122 #define READ_DEPTH( d, _x, _y )         \
 123    d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
 124
 125 #define TAG(x) gamma##x##_16
 126 #include "depthtmp.h"
 127
 128
 129 #if 0 /* Unused */
 130 /* 32 bit depthbuffer functions.
 131  */
 132 #define WRITE_DEPTH( _x, _y, d )        \
 133    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = d;
 134
 135 #define READ_DEPTH( d, _x, _y )         \
 136    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);
 137
 138 #define TAG(x) gamma##x##_32
 139 #include "depthtmp.h"
 140 #endif
 141
 142
 143 /* 24/8 bit interleaved depth/stencil functions
 144  */
 145 #define WRITE_DEPTH( _x, _y, d ) {                      \
 146    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch); \
 147    tmp &= 0xff;                                         \
 148    tmp |= (d) & 0xffffff00;                             \
 149    *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;                \
 150 }
 151
 152 #define READ_DEPTH( d, _x, _y )         \
 153    d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) & ~0xff;
 154
 155
 156 #define TAG(x) gamma##x##_24_8
 157 #include "depthtmp.h"
 158
 159 #if 0
 160 #define WRITE_STENCIL( _x, _y, d ) {                    \
 161    GLuint tmp = *(GLuint *)(buf + _x*4 + _y*pitch);     \
 162    tmp &= 0xffffff00;                                   \
 163    tmp |= d & 0xff;                                     \
 164    *(GLuint *)(buf + _x*4 + _y*pitch) = tmp;            \
 165 }
 166
 167 #define READ_STENCIL( d, _x, _y )               \
 168    d = *(GLuint *)(buf + _x*4 + _y*pitch) & 0xff;
 169
 170 #define TAG(x) gamma##x##_24_8
 171 #include "stenciltmp.h"
 172
 173 static void gammaReadRGBASpan8888( const GLcontext *ctx,
 174                                GLuint n, GLint x, GLint y,
 175                                GLubyte rgba[][4])
 176 {
 177    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 178    gammaScreenPtr gammascrn = gmesa->gammaScreen;
 179    u_int32_t dwords1, dwords2, i = 0;
 180    char *src = (char *)rgba[0];
 181    GLuint read = n * gammascrn->cpp; /* Number of bytes we are expecting */
 182    u_int32_t data;
 183
 184    FLUSH_DMA_BUFFER(gmesa);
 185    CHECK_DMA_BUFFER(gmesa, 16);
 186    WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode & ~(LBReadSrcEnable | LBReadDstEnable));
 187    WRITE(gmesa->buf, ColorDDAMode, ColorDDAEnable);
 188    WRITE(gmesa->buf, LBWriteMode, LBWriteModeDisable);
 189    WRITE(gmesa->buf, FBReadMode, (gmesa->FBReadMode & ~FBReadSrcEnable) | FBReadDstEnable | FBDataTypeColor);
 190    WRITE(gmesa->buf, FilterMode, 0x200); /* Pass FBColorData */
 191    WRITE(gmesa->buf, FBWriteMode, FBW_UploadColorData | FBWriteModeDisable);
 192    WRITE(gmesa->buf, StartXSub, (x+n)<<16);
 193    WRITE(gmesa->buf, StartXDom, x<<16);
 194    WRITE(gmesa->buf, StartY, y<<16);
 195    WRITE(gmesa->buf, GLINTCount, 1);
 196    WRITE(gmesa->buf, dXDom, 0<<16);
 197    WRITE(gmesa->buf, dXSub, 0<<16);
 198    WRITE(gmesa->buf, dY, 1<<16);
 199    WRITE(gmesa->buf, Render, PrimitiveTrapezoid);
 200    FLUSH_DMA_BUFFER(gmesa);
 201
 202 moredata:
 203
 204    dwords1 = *(volatile u_int32_t*)(void *)(((u_int8_t*)gammascrn->regions[0].map) + (GlintOutFIFOWords));
 205    dwords2 = *(volatile u_int32_t*)(void *)(((u_int8_t*)gammascrn->regions[2].map) + (GlintOutFIFOWords));
 206
 207    if (dwords1) {
 208         memcpy(src, (char*)gammascrn->regions[1].map + 0x1000, dwords1 << 2);
 209         src += dwords1 << 2;
 210         read -= dwords1 << 2;
 211    }
 212    if (dwords2) {
 213         memcpy(src, (char*)gammascrn->regions[3].map + 0x1000, dwords2 << 2);
 214         src += dwords2 << 2;
 215         read -= dwords2 << 2;
 216    }
 217
 218    if (read)
 219         goto moredata;
 220
 221 done:
 222
 223    CHECK_DMA_BUFFER(gmesa, 6);
 224    WRITE(gmesa->buf, ColorDDAMode, gmesa->ColorDDAMode);
 225    WRITE(gmesa->buf, LBWriteMode, LBWriteModeEnable);
 226    WRITE(gmesa->buf, LBReadMode, gmesa->LBReadMode);
 227    WRITE(gmesa->buf, FBReadMode, gmesa->FBReadMode);
 228    WRITE(gmesa->buf, FBWriteMode, FBWriteModeEnable);
 229    WRITE(gmesa->buf, FilterMode, 0x400);
 230 }
 231 #endif
 232
 233 static void gammaSetBuffer( GLcontext *ctx,
 234                             GLframebuffer *colorBuffer,
 235                             GLuint bufferBit )
 236 {
 237    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 238
 239    switch ( bufferBit ) {
 240    case BUFFER_BIT_FRONT_LEFT:
 241       gmesa->readOffset = 0;
 242       break;
 243    case BUFFER_BIT_BACK_LEFT:
 244       gmesa->readOffset = gmesa->driScreen->fbHeight * gmesa->driScreen->fbWidth * gmesa->gammaScreen->cpp;
 245       break;
 246    default:
 247       _mesa_problem(ctx, "Unexpected buffer 0x%x in gammaSetBuffer()", bufferBit);
 248    }
 249 }
 250
 251
 252 void gammaDDInitSpanFuncs( GLcontext *ctx )
 253 {
 254    gammaContextPtr gmesa = GAMMA_CONTEXT(ctx);
 255    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 256
 257    swdd->SetBuffer = gammaSetBuffer;
 258
 259    switch ( gmesa->gammaScreen->cpp ) {
 260    case 2:
 261       swdd->WriteRGBASpan       = gammaWriteRGBASpan_RGB565;
 262       swdd->WriteRGBSpan        = gammaWriteRGBSpan_RGB565;
 263       swdd->WriteMonoRGBASpan   = gammaWriteMonoRGBASpan_RGB565;
 264       swdd->WriteRGBAPixels     = gammaWriteRGBAPixels_RGB565;
 265       swdd->WriteMonoRGBAPixels = gammaWriteMonoRGBAPixels_RGB565;
 266       swdd->ReadRGBASpan        = gammaReadRGBASpan_RGB565;
 267       swdd->ReadRGBAPixels      = gammaReadRGBAPixels_RGB565;
 268       break;
 269
 270    case 4:
 271       swdd->WriteRGBASpan       = gammaWriteRGBASpan_ARGB8888;
 272       swdd->WriteRGBSpan        = gammaWriteRGBSpan_ARGB8888;
 273       swdd->WriteMonoRGBASpan   = gammaWriteMonoRGBASpan_ARGB8888;
 274       swdd->WriteRGBAPixels     = gammaWriteRGBAPixels_ARGB8888;
 275       swdd->WriteMonoRGBAPixels = gammaWriteMonoRGBAPixels_ARGB8888;
 276 #if 1
 277       swdd->ReadRGBASpan        = gammaReadRGBASpan_ARGB8888;
 278 #else
 279       swdd->ReadRGBASpan        = gammaReadRGBASpan8888;
 280 #endif
 281       swdd->ReadRGBAPixels      = gammaReadRGBAPixels_ARGB8888;
 282       break;
 283
 284    default:
 285       break;
 286    }
 287
 288    switch ( gmesa->glCtx->Visual.depthBits ) {
 289    case 16:
 290       swdd->ReadDepthSpan       = gammaReadDepthSpan_16;
 291       swdd->WriteDepthSpan      = gammaWriteDepthSpan_16;
 292       swdd->ReadDepthPixels     = gammaReadDepthPixels_16;
 293       swdd->WriteDepthPixels    = gammaWriteDepthPixels_16;
 294       break;
 295
 296    case 24:
 297       swdd->ReadDepthSpan       = gammaReadDepthSpan_24_8;
 298       swdd->WriteDepthSpan      = gammaWriteDepthSpan_24_8;
 299       swdd->ReadDepthPixels     = gammaReadDepthPixels_24_8;
 300       swdd->WriteDepthPixels    = gammaWriteDepthPixels_24_8;
 301
 302 #if 0
 303       swdd->ReadStencilSpan     = gammaReadStencilSpan_24_8;
 304       swdd->WriteStencilSpan    = gammaWriteStencilSpan_24_8;
 305       swdd->ReadStencilPixels   = gammaReadStencilPixels_24_8;
 306       swdd->WriteStencilPixels  = gammaWriteStencilPixels_24_8;
 307 #endif
 308       break;
 309
 310    default:
 311       break;
 312    }
 313 }