src/mesa/drivers/dri/sis/sis_span.c

   1 /**************************************************************************
   2
   3 Copyright 2000 Silicon Integrated Systems Corp, Inc., HsinChu, Taiwan.
   4 Copyright 2003 Eric Anholt
   5 All Rights Reserved.
   6
   7 Permission is hereby granted, free of charge, to any person obtaining a
   8 copy of this software and associated documentation files (the "Software"),
   9 to deal in the Software without restriction, including without limitation
  10 on the rights to use, copy, modify, merge, publish, distribute, sub
  11 license, and/or sell copies of the Software, and to permit persons to whom
  12 the Software is furnished to do so, subject to the following conditions:
  13
  14 The above copyright notice and this permission notice (including the next
  15 paragraph) shall be included in all copies or substantial portions of the
  16 Software.
  17
  18 THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  19 IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  20 FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  21 ERIC ANHOLT OR SILICON INTEGRATED SYSTEMS CORP BE LIABLE FOR ANY CLAIM,
  22 DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
  23 OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
  24 USE OR OTHER DEALINGS IN THE SOFTWARE.
  25
  26 **************************************************************************/
  27
  28 /*
  29  * Authors:
  30  *   Sung-Ching Lin <sclin@sis.com.tw>
  31  *   Eric Anholt <anholt@FreeBSD.org>
  32  */
  33
  34 #include "sis_context.h"
  35 #include "sis_span.h"
  36 #include "sis_lock.h"
  37 #include "sis_tris.h"
  38
  39 #include "swrast/swrast.h"
  40
  41 #define DBG 0
  42
  43 #define LOCAL_VARS                                                      \
  44    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  45    __DRIdrawablePrivate *dPriv = smesa->driDrawable;                    \
  46    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  47    GLuint pitch = srb->pitch;                                           \
  48    char *buf = srb->map;                                                \
  49    GLuint p;                                                            \
  50    (void) buf; (void) p;
  51
  52
  53 #define LOCAL_DEPTH_VARS                                                \
  54    sisContextPtr smesa = SIS_CONTEXT(ctx);                              \
  55    __DRIdrawablePrivate *dPriv = smesa->driDrawable;                    \
  56    struct sis_renderbuffer *srb = (struct sis_renderbuffer *) rb;       \
  57    char *buf = srb->map;
  58
  59 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  60
  61 #define HW_LOCK() do {} while(0);
  62
  63 #define HW_UNLOCK() do {} while(0);
  64
  65 /* RGB565 */
  66 #define SPANTMP_PIXEL_FMT GL_RGB
  67 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  68
  69 #define TAG(x)    sis##x##_RGB565
  70 #define TAG2(x,y) sis##x##_RGB565##y
  71 #include "spantmp2.h"
  72
  73
  74 /* ARGB8888 */
  75 /* FIXME the old code always read back alpha as 0xff, i.e. fully opaque.
  76    Was there a reason to do so ? If so that'll won't work with that template... */
  77 #define SPANTMP_PIXEL_FMT GL_BGRA
  78 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  79
  80 #define TAG(x)    sis##x##_ARGB8888
  81 #define TAG2(x,y) sis##x##_ARGB8888##y
  82 #include "spantmp2.h"
  83
  84
  85 /* 16 bit depthbuffer functions.
  86  */
  87 #define WRITE_DEPTH( _x, _y, d )        \
  88    *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch) = d;
  89
  90 #define READ_DEPTH( d, _x, _y )         \
  91    d = *(GLushort *)(buf + (_x)*2 + (_y)*srb->pitch);
  92
  93 #define TAG(x) sis##x##_z16
  94 #include "depthtmp.h"
  95
  96
  97 /* 32 bit depthbuffer functions.
  98  */
  99 #define WRITE_DEPTH( _x, _y, d )        \
 100    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = d;
 101
 102 #define READ_DEPTH( d, _x, _y )         \
 103    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);
 104
 105 #define TAG(x) sis##x##_z32
 106 #include "depthtmp.h"
 107
 108
 109 /* 8/24 bit interleaved depth/stencil functions
 110  */
 111 #define WRITE_DEPTH( _x, _y, d ) {                              \
 112    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch);    \
 113    tmp &= 0xff000000;                                           \
 114    tmp |= (d & 0x00ffffff);                                     \
 115    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;           \
 116 }
 117
 118 #define READ_DEPTH( d, _x, _y ) {                               \
 119    d = *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0x00ffffff; \
 120 }
 121
 122 #define TAG(x) sis##x##_z24_s8
 123 #include "depthtmp.h"
 124
 125 #define WRITE_STENCIL( _x, _y, d ) {                            \
 126    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*smesa->depth.pitch); \
 127    tmp &= 0x00ffffff;                                           \
 128    tmp |= (d << 24);                                            \
 129    *(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) = tmp;   \
 130 }
 131
 132 #define READ_STENCIL( d, _x, _y )                       \
 133    d = (*(GLuint *)(buf + (_x)*4 + (_y)*srb->pitch) & 0xff000000) >> 24;
 134
 135 #define TAG(x) sis##x##_z24_s8
 136 #include "stenciltmp.h"
 137
 138
 139
 140 void sisSpanRenderStart( GLcontext *ctx )
 141 {
 142    sisContextPtr smesa = SIS_CONTEXT(ctx);
 143
 144    SIS_FIREVERTICES(smesa);
 145    LOCK_HARDWARE();
 146    WaitEngIdle( smesa );
 147 }
 148
 149 void sisSpanRenderFinish( GLcontext *ctx )
 150 {
 151    sisContextPtr smesa = SIS_CONTEXT(ctx);
 152
 153    _swrast_flush( ctx );
 154    UNLOCK_HARDWARE();
 155 }
 156
 157 void
 158 sisDDInitSpanFuncs( GLcontext *ctx )
 159 {
 160    struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 161    swdd->SpanRenderStart   = sisSpanRenderStart;
 162    swdd->SpanRenderFinish  = sisSpanRenderFinish;
 163 }
 164
 165
 166
 167 /**
 168  * Plug in the Get/Put routines for the given driRenderbuffer.
 169  */
 170 void
 171 sisSetSpanFunctions(struct sis_renderbuffer *srb, const GLvisual *vis)
 172 {
 173    if (srb->Base.InternalFormat == GL_RGBA) {
 174       if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
 175          sisInitPointers_RGB565( &srb->Base );
 176       }
 177       else {
 178          sisInitPointers_ARGB8888( &srb->Base );
 179       }
 180    }
 181    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
 182       sisInitDepthPointers_z16(&srb->Base);
 183    }
 184    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
 185       sisInitDepthPointers_z24_s8(&srb->Base);
 186    }
 187    else if (srb->Base.InternalFormat == GL_DEPTH_COMPONENT32) {
 188       sisInitDepthPointers_z32(&srb->Base);
 189    }
 190    else if (srb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
 191       sisInitStencilPointers_z24_s8(&srb->Base);
 192    }
 193 }