src/mesa/drivers/dri/unichrome/via_span.c

   1 /*
   2  * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
   3  * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sub license,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice and this permission notice (including the
  13  * next paragraph) shall be included in all copies or substantial portions
  14  * of the Software.
  15  *
  16  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
  17  * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  18  * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
  19  * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
  20  * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
  21  * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
  22  * DEALINGS IN THE SOFTWARE.
  23  */
  24
  25 #include "main/glheader.h"
  26 #include "main/formats.h"
  27 #include "main/macros.h"
  28 #include "main/mtypes.h"
  29 #include "main/colormac.h"
  30 #include "via_context.h"
  31 #include "via_span.h"
  32 #include "via_ioctl.h"
  33 #include "swrast/swrast.h"
  34
  35 #define DBG 0
  36
  37 #define Y_FLIP(_y) (height - _y - 1)
  38
  39 #define HW_LOCK()
  40
  41 #define HW_UNLOCK()
  42
  43 #undef LOCAL_VARS
  44 #define LOCAL_VARS                                                      \
  45     struct via_renderbuffer *vrb = (struct via_renderbuffer *) rb;      \
  46     __DRIdrawable *dPriv = vrb->dPriv;                           \
  47     GLuint pitch = vrb->pitch;                                          \
  48     GLuint height = dPriv->h;                                           \
  49     GLint p = 0;                                                        \
  50     char *buf = (char *)(vrb->origMap);                                 \
  51     (void) p;
  52
  53 /* ================================================================
  54  * Color buffer
  55  */
  56
  57 /* 16 bit, RGB565 color spanline and pixel functions
  58  */
  59 #define GET_PTR(_x, _y) (buf + (_x) * 2 + (_y) * pitch)
  60 #define SPANTMP_PIXEL_FMT GL_RGB
  61 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_SHORT_5_6_5
  62
  63 #define TAG(x)    via##x##_565
  64 #define TAG2(x,y) via##x##_565##y
  65 #include "spantmp2.h"
  66
  67
  68 /* 32 bit, ARGB8888 color spanline and pixel functions
  69  */
  70 #define GET_PTR(_x, _y) (buf + (_x) * 4 + (_y) * pitch)
  71 #define SPANTMP_PIXEL_FMT GL_BGRA
  72 #define SPANTMP_PIXEL_TYPE GL_UNSIGNED_INT_8_8_8_8_REV
  73
  74 #define TAG(x)    via##x##_8888
  75 #define TAG2(x,y) via##x##_8888##y
  76 #include "spantmp2.h"
  77
  78
  79 /* 16 bit depthbuffer functions.
  80  */
  81 #define LOCAL_DEPTH_VARS                                            \
  82     struct via_renderbuffer *vrb = (struct via_renderbuffer *) rb;  \
  83     __DRIdrawable *dPriv = vrb->dPriv;                       \
  84     GLuint depth_pitch = vrb->pitch;                                \
  85     GLuint height = dPriv->h;                                       \
  86     char *buf = (char *)(vrb->map)
  87
  88 #define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS
  89
  90 #define VALUE_TYPE GLushort
  91
  92 #define WRITE_DEPTH(_x, _y, d)                      \
  93     *(GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch) = d;
  94
  95 #define READ_DEPTH(d, _x, _y)                       \
  96     d = *(volatile GLushort *)(buf + (_x) * 2 + (_y) * depth_pitch);
  97
  98 #define TAG(x) via##x##_z16
  99 #include "depthtmp.h"
 100
 101 /* 32 bit depthbuffer functions.
 102  */
 103 #define VALUE_TYPE GLuint
 104
 105 #define WRITE_DEPTH(_x, _y, d)                      \
 106     *(GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch) = d;
 107
 108 #define READ_DEPTH(d, _x, _y)                       \
 109     d = *(volatile GLuint *)(buf + (_x) * 4 + (_y) * depth_pitch);
 110
 111 #define TAG(x) via##x##_z32
 112 #include "depthtmp.h"
 113
 114
 115
 116 /* 24/8 bit interleaved depth/stencil functions
 117  */
 118 #define VALUE_TYPE GLuint
 119
 120 #define WRITE_DEPTH( _x, _y, d ) {                      \
 121    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch);   \
 122    tmp &= 0x000000ff;                                   \
 123    tmp |= ((d)<<8);                             \
 124    *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp;          \
 125 }
 126
 127 #define READ_DEPTH( d, _x, _y )         \
 128    d = (*(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch)) >> 8;
 129
 130
 131 #define TAG(x) via##x##_z24_s8
 132 #include "depthtmp.h"
 133
 134 #define WRITE_STENCIL( _x, _y, d ) {                    \
 135    GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch);   \
 136    tmp &= 0xffffff00;                                   \
 137    tmp |= (d);                                  \
 138    *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) = tmp;          \
 139 }
 140
 141 #define READ_STENCIL( d, _x, _y )                       \
 142    d = *(GLuint *)(buf + (_x)*4 + (_y)*depth_pitch) & 0xff;
 143
 144 #define TAG(x) via##x##_z24_s8
 145 #include "stenciltmp.h"
 146
 147
 148
 149
 150 /* Move locking out to get reasonable span performance.
 151  */
 152 void viaSpanRenderStart( struct gl_context *ctx )
 153 {
 154    struct via_context *vmesa = VIA_CONTEXT(ctx);
 155    viaWaitIdle(vmesa, GL_FALSE);
 156    LOCK_HARDWARE(vmesa);
 157 }
 158
 159 void viaSpanRenderFinish( struct gl_context *ctx )
 160 {
 161    struct via_context *vmesa = VIA_CONTEXT(ctx);
 162    _swrast_flush( ctx );
 163    UNLOCK_HARDWARE( vmesa );
 164 }
 165
 166 void viaInitSpanFuncs(struct gl_context *ctx)
 167 {
 168     struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
 169     swdd->SpanRenderStart = viaSpanRenderStart;
 170     swdd->SpanRenderFinish = viaSpanRenderFinish;
 171 }
 172
 173
 174
 175 /**
 176  * Plug in the Get/Put routines for the given driRenderbuffer.
 177  */
 178 void
 179 viaSetSpanFunctions(struct via_renderbuffer *vrb, const struct gl_config *vis)
 180 {
 181    if (vrb->Base.Format == MESA_FORMAT_RGB565) {
 182       viaInitPointers_565(&vrb->Base);
 183    }
 184    else if (vrb->Base.Format == MESA_FORMAT_ARGB8888) {
 185       viaInitPointers_8888(&vrb->Base);
 186    }
 187    else if (vrb->Base.Format == MESA_FORMAT_Z16) {
 188       viaInitDepthPointers_z16(&vrb->Base);
 189    }
 190    else if (vrb->Base.Format == MESA_FORMAT_Z24_S8) {
 191       viaInitDepthPointers_z24_s8(&vrb->Base);
 192    }
 193    else if (vrb->Base.Format == MESA_FORMAT_Z32) {
 194       viaInitDepthPointers_z32(&vrb->Base);
 195    }
 196    else if (vrb->Base.Format == MESA_FORMAT_S8) {
 197       viaInitStencilPointers_z24_s8(&vrb->Base);
 198    }
 199 }