src/mesa/drivers/dri/mach64/mach64_span.c

   1 /* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */
   2 /*
   3  * Copyright 2000 Gareth Hughes
   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 "Software"),
   8  * to deal in the Software without restriction, including without limitation
   9  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  10  * and/or sell copies of the Software, and to permit persons to whom the
  11  * Software is furnished to do so, subject to the following conditions:
  12  *
  13  * The above copyright notice and this permission notice (including the next
  14  * paragraph) shall be included in all copies or substantial portions of the
  15  * Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  18  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  20  * GARETH HUGHES BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
  21  * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  22  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 /*
  26  * Authors:
  27  *      Gareth Hughes <gareth@valinux.com>
  28  *      Leif Delgass <ldelgass@retinalburn.net>
  29  *      Jos�Fonseca <j_r_fonseca@yahoo.co.uk>
  30  */
  31
  32 #include "mach64_context.h"
  33 #include "mach64_ioctl.h"
  34 #include "mach64_state.h"
  35 #include "mach64_span.h"
  36
  37 #include "swrast/swrast.h"
  38
  39 #define DBG 0
  40
  41 #define LOCAL_VARS                                                      \
  42    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);                        \
  43    mach64ScreenRec *mach64Screen = mmesa->mach64Screen;                 \
  44    __DRIscreenPrivate *driScreen = mmesa->driScreen;                    \
  45    __DRIdrawablePrivate *dPriv = mmesa->driDrawable;                    \
  46    GLuint pitch = mmesa->drawPitch * mach64Screen->cpp;                 \
  47    GLuint height = dPriv->h;                                            \
  48    char *buf = (char *)(driScreen->pFB +                                \
  49                         mmesa->drawOffset +                             \
  50                         (dPriv->x * mach64Screen->cpp) +                \
  51                         (dPriv->y * pitch));                            \
  52    char *read_buf = (char *)(driScreen->pFB +                           \
  53                              mmesa->readOffset +                        \
  54                              (dPriv->x * mach64Screen->cpp) +           \
  55                              (dPriv->y * pitch));                       \
  56    GLushort p;                                                          \
  57    (void) read_buf; (void) buf; (void) p
  58
  59 #define LOCAL_DEPTH_VARS                                                \
  60    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);                        \
  61    mach64ScreenRec *mach64Screen = mmesa->mach64Screen;                 \
  62    __DRIdrawablePrivate *dPriv = mmesa->driDrawable;                    \
  63    __DRIscreenPrivate *driScreen = mmesa->driScreen;                    \
  64    GLuint pitch = mach64Screen->depthPitch * 2;                         \
  65    GLuint height = dPriv->h;                                            \
  66    char *buf = (char *)(driScreen->pFB +                                \
  67                         mach64Screen->depthOffset +                     \
  68                         dPriv->x * 2 +                                  \
  69                         dPriv->y * pitch)
  70
  71 #define LOCAL_STENCIL_VARS      LOCAL_DEPTH_VARS
  72
  73 #define Y_FLIP( _y )    (height - _y - 1)
  74
  75 #define HW_LOCK()
  76
  77 /* FIXME could/should we use dPriv->numClipRects like the other drivers? */
  78 #define HW_CLIPLOOP()                                                   \
  79    do {                                                                 \
  80       int _nc = mmesa->numClipRects;                                    \
  81                                                                         \
  82       while ( _nc-- ) {                                                 \
  83          int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX;           \
  84          int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY;           \
  85          int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX;           \
  86          int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
  87
  88 #define HW_ENDCLIPLOOP()                                                \
  89       }                                                                 \
  90    } while (0)
  91
  92 #define HW_UNLOCK()
  93
  94
  95
  96 /* ================================================================
  97  * Color buffer
  98  */
  99
 100 /* 16 bit, RGB565 color spanline and pixel functions
 101  */
 102 #define SPANTMP_PIXEL_FMT GL_RGB
 103 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
 104
 105 #define TAG(x)    mach64##x##_RGB565
 106 #define TAG2(x,y) mach64##x##_RGB565##y
 107 #include "spantmp2.h"
 108
 109
 110 /* 32 bit, ARGB8888 color spanline and pixel functions
 111  */
 112 /* FIXME the old code always read back alpha as 0xff, i.e. fully opaque.
 113    Was there a reason to do so ? If so that'll won't work with that template... */
 114 #define SPANTMP_PIXEL_FMT GL_BGRA
 115 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
 116
 117 #define TAG(x)    mach64##x##_ARGB8888
 118 #define TAG2(x,y) mach64##x##_ARGB8888##y
 119 #include "spantmp2.h"
 120
 121
 122 /* ================================================================
 123  * Depth buffer
 124  */
 125
 126 /* 16 bit depthbuffer functions.
 127  */
 128 #define WRITE_DEPTH( _x, _y, d )                                        \
 129    *(GLushort *)(buf + (_x)*2 + (_y)*pitch) = d;
 130
 131 #define READ_DEPTH( d, _x, _y )                                         \
 132    d = *(GLushort *)(buf + (_x)*2 + (_y)*pitch);
 133
 134 #define TAG(x) mach64##x##_16
 135 #include "depthtmp.h"
 136
 137
 138 /*
 139  * This function is called to specify which buffer to read and write
 140  * for software rasterization (swrast) fallbacks.  This doesn't necessarily
 141  * correspond to glDrawBuffer() or glReadBuffer() calls.
 142  */
 143 static void mach64DDSetBuffer( GLcontext *ctx,
 144                                GLframebuffer *colorBuffer,
 145                                GLuint bufferBit )
 146 {
 147    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 148
 149    switch ( bufferBit ) {
 150    case BUFFER_BIT_FRONT_LEFT:
 151       if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
 152          fprintf(stderr,"%s: BUFFER_BIT_FRONT_LEFT\n", __FUNCTION__);
 153       mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->frontOffset;
 154       mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->frontPitch;
 155       break;
 156    case BUFFER_BIT_BACK_LEFT:
 157       if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
 158          fprintf(stderr,"%s: BUFFER_BIT_BACK_LEFT\n", __FUNCTION__);
 159       mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->backOffset;
 160       mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->backPitch;
 161       break;
 162    default:
 163       break;
 164    }
 165 }
 166
 167 static void mach64SpanRenderStart( GLcontext *ctx )
 168 {
 169    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 170    LOCK_HARDWARE( mmesa );
 171    FINISH_DMA_LOCKED( mmesa );
 172 }
 173
 174 static void mach64SpanRenderFinish( GLcontext *ctx )
 175 {
 176    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 177    _swrast_flush( ctx );
 178    UNLOCK_HARDWARE( mmesa );
 179 }
 180
 181 void mach64DDInitSpanFuncs( GLcontext *ctx )
 182 {
 183 #if 0
 184    mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
 185 #endif
 186    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 187
 188    swdd->SetBuffer = mach64DDSetBuffer;
 189
 190 #if 0
 191    switch ( mmesa->mach64Screen->cpp ) {
 192    case 2:
 193       swdd->WriteRGBASpan       = mach64WriteRGBASpan_RGB565;
 194       swdd->WriteRGBSpan        = mach64WriteRGBSpan_RGB565;
 195       swdd->WriteMonoRGBASpan   = mach64WriteMonoRGBASpan_RGB565;
 196       swdd->WriteRGBAPixels     = mach64WriteRGBAPixels_RGB565;
 197       swdd->WriteMonoRGBAPixels = mach64WriteMonoRGBAPixels_RGB565;
 198       swdd->ReadRGBASpan        = mach64ReadRGBASpan_RGB565;
 199       swdd->ReadRGBAPixels      = mach64ReadRGBAPixels_RGB565;
 200       break;
 201
 202    case 4:
 203       swdd->WriteRGBASpan       = mach64WriteRGBASpan_ARGB8888;
 204       swdd->WriteRGBSpan        = mach64WriteRGBSpan_ARGB8888;
 205       swdd->WriteMonoRGBASpan   = mach64WriteMonoRGBASpan_ARGB8888;
 206       swdd->WriteRGBAPixels     = mach64WriteRGBAPixels_ARGB8888;
 207       swdd->WriteMonoRGBAPixels = mach64WriteMonoRGBAPixels_ARGB8888;
 208       swdd->ReadRGBASpan        = mach64ReadRGBASpan_ARGB8888;
 209       swdd->ReadRGBAPixels      = mach64ReadRGBAPixels_ARGB8888;
 210
 211       break;
 212
 213    default:
 214       break;
 215    }
 216 #endif
 217
 218    /* Depth buffer is always 16 bit */
 219 #if 0
 220    swdd->ReadDepthSpan          = mach64ReadDepthSpan_16;
 221    swdd->WriteDepthSpan         = mach64WriteDepthSpan_16;
 222    swdd->ReadDepthPixels        = mach64ReadDepthPixels_16;
 223    swdd->WriteDepthPixels       = mach64WriteDepthPixels_16;
 224 #endif
 225 #if 0
 226    /* No hardware stencil buffer */
 227    swdd->ReadStencilSpan        = NULL;
 228    swdd->WriteStencilSpan       = NULL;
 229    swdd->ReadStencilPixels      = NULL;
 230    swdd->WriteStencilPixels     = NULL;
 231
 232    swdd->WriteCI8Span           = NULL;
 233    swdd->WriteCI32Span          = NULL;
 234    swdd->WriteMonoCISpan        = NULL;
 235    swdd->WriteCI32Pixels        = NULL;
 236    swdd->WriteMonoCIPixels      = NULL;
 237    swdd->ReadCI32Span           = NULL;
 238    swdd->ReadCI32Pixels         = NULL;
 239 #endif
 240    swdd->SpanRenderStart        = mach64SpanRenderStart;
 241    swdd->SpanRenderFinish       = mach64SpanRenderFinish;
 242 }
 243
 244
 245 /**
 246  * Plug in the Get/Put routines for the given driRenderbuffer.
 247  */
 248 void
 249 mach64SetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
 250 {
 251    if (drb->Base.InternalFormat == GL_RGBA) {
 252       if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
 253          mach64InitPointers_RGB565(&drb->Base);
 254       }
 255       else {
 256          mach64InitPointers_ARGB8888(&drb->Base);
 257       }
 258    }
 259    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
 260       drb->Base.GetRow        = mach64ReadDepthSpan_16;
 261       drb->Base.GetValues     = mach64ReadDepthPixels_16;
 262       drb->Base.PutRow        = mach64WriteDepthSpan_16;
 263       drb->Base.PutMonoRow    = mach64WriteMonoDepthSpan_16;
 264       drb->Base.PutValues     = mach64WriteDepthPixels_16;
 265       drb->Base.PutMonoValues = NULL;
 266    }
 267    else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
 268       /* never */
 269       drb->Base.GetRow        = NULL;
 270       drb->Base.GetValues     = NULL;
 271       drb->Base.PutRow        = NULL;
 272       drb->Base.PutMonoRow    = NULL;
 273       drb->Base.PutValues     = NULL;
 274       drb->Base.PutMonoValues = NULL;
 275    }
 276    else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
 277       /* never */
 278       drb->Base.GetRow        = NULL;
 279       drb->Base.GetValues     = NULL;
 280       drb->Base.PutRow        = NULL;
 281       drb->Base.PutMonoRow    = NULL;
 282       drb->Base.PutValues     = NULL;
 283       drb->Base.PutMonoValues = NULL;
 284    }
 285 }