src/mesa/drivers/dri/sis/sis_dd.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
  35 #include "sis_context.h"
  36 #include "sis_dd.h"
  37 #include "sis_lock.h"
  38 #include "sis_alloc.h"
  39 #include "sis_span.h"
  40 #include "sis_state.h"
  41 #include "sis_tris.h"
  42
  43 #include "main/formats.h"
  44 #include "main/renderbuffer.h"
  45
  46 #include "utils.h"
  47
  48 #define DRIVER_DATE     "20060710"
  49
  50 /* Return the width and height of the given buffer.
  51  */
  52 static void
  53 sisGetBufferSize( GLframebuffer *buffer,
  54                               GLuint *width, GLuint *height )
  55 {
  56    GET_CURRENT_CONTEXT(ctx);
  57    sisContextPtr smesa = SIS_CONTEXT(ctx);
  58
  59    LOCK_HARDWARE();
  60    *width  = smesa->driDrawable->w;
  61    *height = smesa->driDrawable->h;
  62    UNLOCK_HARDWARE();
  63 }
  64
  65 /* Return various strings for glGetString().
  66  */
  67 static const GLubyte *
  68 sisGetString( GLcontext *ctx, GLenum name )
  69 {
  70    sisContextPtr smesa = SIS_CONTEXT(ctx);
  71    static char buffer[128];
  72    unsigned   offset;
  73    GLuint agp_mode = (smesa->AGPSize > 0);
  74
  75    switch ( name )
  76    {
  77    case GL_VENDOR:
  78       return (GLubyte *)"Eric Anholt";
  79
  80    case GL_RENDERER:
  81       offset = driGetRendererString( buffer, "SiS", DRIVER_DATE, agp_mode );
  82
  83       return (GLubyte *)buffer;
  84
  85    default:
  86       return NULL;
  87    }
  88 }
  89
  90 /* Send all commands to the hardware.
  91  */
  92 static void
  93 sisFlush( GLcontext *ctx )
  94 {
  95    sisContextPtr smesa = SIS_CONTEXT(ctx);
  96
  97    SIS_FIREVERTICES(smesa);
  98 }
  99
 100 /* Make sure all commands have been sent to the hardware and have
 101  * completed processing.
 102  */
 103 static void
 104 sisFinish( GLcontext *ctx )
 105 {
 106    sisContextPtr smesa = SIS_CONTEXT(ctx);
 107
 108    SIS_FIREVERTICES(smesa);
 109    LOCK_HARDWARE();
 110    WaitEngIdle( smesa );
 111    UNLOCK_HARDWARE();
 112 }
 113
 114 static void
 115 sisDeleteRenderbuffer(struct gl_renderbuffer *rb)
 116 {
 117    /* Don't free() since we're contained in sis_context struct. */
 118 }
 119
 120 static GLboolean
 121 sisRenderbufferStorage(GLcontext *ctx, struct gl_renderbuffer *rb,
 122                        GLenum internalFormat, GLuint width, GLuint height)
 123 {
 124    rb->Width = width;
 125    rb->Height = height;
 126    rb->InternalFormat = internalFormat;
 127    return GL_TRUE;
 128 }
 129
 130 static void
 131 sisInitRenderbuffer(struct gl_renderbuffer *rb, GLenum format)
 132 {
 133    const GLuint name = 0;
 134
 135    _mesa_init_renderbuffer(rb, name);
 136
 137    /* Make sure we're using a null-valued GetPointer routine */
 138    assert(rb->GetPointer(NULL, rb, 0, 0) == NULL);
 139
 140    rb->InternalFormat = format;
 141
 142    if (format == GL_RGBA) {
 143       /* Color */
 144       rb->Format = MESA_FORMAT_ARGB8888;
 145       rb->DataType = GL_UNSIGNED_BYTE;
 146    }
 147    else if (format == GL_DEPTH_COMPONENT16) {
 148       /* Depth */
 149       /* we always Get/Put 32-bit Z values */
 150       rb->Format = MESA_FORMAT_Z16;
 151       rb->DataType = GL_UNSIGNED_INT;
 152    }
 153    else if (format == GL_DEPTH_COMPONENT24) {
 154       /* Depth */
 155       /* we always Get/Put 32-bit Z values */
 156       rb->Format = MESA_FORMAT_Z32;
 157       rb->DataType = GL_UNSIGNED_INT;
 158    }
 159    else {
 160       /* Stencil */
 161       ASSERT(format == GL_STENCIL_INDEX8_EXT);
 162       rb->Format = MESA_FORMAT_S8;
 163       rb->DataType = GL_UNSIGNED_BYTE;
 164    }
 165
 166    rb->Delete = sisDeleteRenderbuffer;
 167    rb->AllocStorage = sisRenderbufferStorage;
 168 }
 169
 170 void
 171 sisUpdateBufferSize(sisContextPtr smesa)
 172 {
 173    __GLSiSHardware *current = &smesa->current;
 174    __GLSiSHardware *prev = &smesa->prev;
 175    struct gl_framebuffer *fb = smesa->glCtx->DrawBuffer;
 176
 177    if (!smesa->front.Base.InternalFormat) {
 178       /* do one-time init for the renderbuffers */
 179       sisInitRenderbuffer(&smesa->front.Base, GL_RGBA);
 180       sisSetSpanFunctions(&smesa->front, &fb->Visual);
 181       _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &smesa->front.Base);
 182
 183       if (fb->Visual.doubleBufferMode) {
 184          sisInitRenderbuffer(&smesa->back.Base, GL_RGBA);
 185          sisSetSpanFunctions(&smesa->back, &fb->Visual);
 186          _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &smesa->back.Base);
 187       }
 188
 189       if (smesa->glCtx->Visual.depthBits > 0) {
 190          sisInitRenderbuffer(&smesa->depth.Base,
 191                              (smesa->glCtx->Visual.depthBits == 16
 192                               ? GL_DEPTH_COMPONENT16 : GL_DEPTH_COMPONENT24));
 193          sisSetSpanFunctions(&smesa->depth, &fb->Visual);
 194          _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &smesa->depth.Base);
 195       }
 196
 197       if (smesa->glCtx->Visual.stencilBits > 0) {
 198          sisInitRenderbuffer(&smesa->stencil.Base, GL_STENCIL_INDEX8_EXT);
 199          sisSetSpanFunctions(&smesa->stencil, &fb->Visual);
 200          _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &smesa->stencil.Base);
 201       }
 202    }
 203
 204    /* Make sure initialization did what we think it should */
 205    assert(smesa->front.Base.InternalFormat);
 206    assert(smesa->front.Base.AllocStorage);
 207    if (fb->Visual.doubleBufferMode) {
 208       assert(fb->Attachment[BUFFER_BACK_LEFT].Renderbuffer);
 209       assert(smesa->front.Base.AllocStorage);
 210    }
 211    if (fb->Visual.depthBits) {
 212       assert(fb->Attachment[BUFFER_DEPTH].Renderbuffer);
 213       assert(smesa->depth.Base.AllocStorage);
 214    }
 215
 216    /* XXX Should get the base offset of the frontbuffer from the X Server */
 217    smesa->front.offset = smesa->driDrawable->x * smesa->bytesPerPixel +
 218                          smesa->driDrawable->y * smesa->front.pitch;
 219    smesa->front.map = (char *) smesa->driScreen->pFB + smesa->front.offset;
 220
 221    if ( smesa->width == smesa->driDrawable->w &&
 222         smesa->height == smesa->driDrawable->h )
 223    {
 224       return;
 225    }
 226
 227    smesa->front.bpp = smesa->bytesPerPixel * 8;
 228    /* Front pitch set on context create */
 229    smesa->front.size = smesa->front.pitch * smesa->driDrawable->h;
 230
 231    smesa->width = smesa->driDrawable->w;
 232    smesa->height = smesa->driDrawable->h;
 233    smesa->bottom = smesa->height - 1;
 234
 235    if (smesa->back.offset)
 236       sisFreeBackbuffer( smesa );
 237    if (smesa->depth.offset)
 238       sisFreeZStencilBuffer( smesa );
 239
 240    if ( smesa->glCtx->Visual.depthBits > 0 )
 241       sisAllocZStencilBuffer( smesa );
 242    if ( smesa->glCtx->Visual.doubleBufferMode )
 243       sisAllocBackbuffer( smesa );
 244
 245    current->hwZ &= ~MASK_ZBufferPitch;
 246    current->hwZ |= smesa->depth.pitch >> 2;
 247    current->hwOffsetZ = smesa->depth.offset >> 2;
 248
 249    if ((current->hwOffsetZ != prev->hwOffsetZ) || (current->hwZ != prev->hwZ)) {
 250       prev->hwOffsetZ = current->hwOffsetZ;
 251       prev->hwZ = current->hwZ;
 252       smesa->GlobalFlag |= GFLAG_ZSETTING;
 253    }
 254
 255    sisUpdateClipping( smesa->glCtx );
 256 }
 257
 258 /* Initialize the driver's misc functions.
 259  */
 260 void
 261 sisInitDriverFuncs( struct dd_function_table *functions )
 262 {
 263    functions->GetBufferSize = sisGetBufferSize;
 264    functions->GetString     = sisGetString;
 265    functions->Finish        = sisFinish;
 266    functions->Flush         = sisFlush;
 267 }