via_screen.c

来自「mesa-6.5-minigui源码」· C语言 代码 · 共 503 行 · 第 1/2 页

/*
 * Copyright 1998-2003 VIA Technologies, Inc. All Rights Reserved.
 * Copyright 2001-2003 S3 Graphics, Inc. All Rights Reserved.
 *
 * Permission is hereby granted, free of charge, to any person obtaining a
 * copy of this software and associated documentation files (the "Software"),
 * to deal in the Software without restriction, including without limitation
 * the rights to use, copy, modify, merge, publish, distribute, sub license,
 * and/or sell copies of the Software, and to permit persons to whom the
 * Software is furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice (including the
 * next paragraph) shall be included in all copies or substantial portions
 * of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
 * VIA, S3 GRAPHICS, AND/OR ITS SUPPLIERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
 * DEALINGS IN THE SOFTWARE.
 */

#include <stdio.h>

#include "utils.h"
#include "dri_util.h"
#include "glheader.h"
#include "context.h"
#include "framebuffer.h"
#include "renderbuffer.h"
#include "matrix.h"
#include "simple_list.h"
#include "vblank.h"

#include "via_state.h"
#include "via_tex.h"
#include "via_span.h"
#include "via_tris.h"
#include "via_ioctl.h"
#include "via_screen.h"
#include "via_fb.h"
#include "via_dri.h"

#include "GL/internal/dri_interface.h"
#include "drirenderbuffer.h"

/* Radeon configuration
 */
#include "xmlpool.h"

const char __driConfigOptions[] =
DRI_CONF_BEGIN
    DRI_CONF_SECTION_PERFORMANCE
        DRI_CONF_FTHROTTLE_MODE(DRI_CONF_FTHROTTLE_IRQS)
        DRI_CONF_VBLANK_MODE(DRI_CONF_VBLANK_DEF_INTERVAL_0)
    DRI_CONF_SECTION_END
    DRI_CONF_SECTION_DEBUG
        DRI_CONF_NO_RAST(false)
    DRI_CONF_SECTION_END
DRI_CONF_END;
static const GLuint __driNConfigOptions = 3;

extern const struct dri_extension card_extensions[];

static int getSwapInfo( __DRIdrawablePrivate *dPriv, __DRIswapInfo * sInfo );

static drmBufMapPtr via_create_empty_buffers(void)
{
    drmBufMapPtr retval;

    retval = (drmBufMapPtr)MALLOC(sizeof(drmBufMap));
    if (retval == NULL) return NULL;
    memset(retval, 0, sizeof(drmBufMap));

    retval->list = (drmBufPtr)MALLOC(sizeof(drmBuf) * VIA_DMA_BUF_NR);
    if (retval->list == NULL) {
       FREE(retval);
       return NULL;
    }
    memset(retval->list, 0, sizeof(drmBuf) * VIA_DMA_BUF_NR);
    return retval;
}

static void via_free_empty_buffers( drmBufMapPtr bufs )
{
   if (bufs && bufs->list)
      FREE(bufs->list);

   if (bufs)
      FREE(bufs);
}


static GLboolean
viaInitDriver(__DRIscreenPrivate *sPriv)
{
    viaScreenPrivate *viaScreen;
    VIADRIPtr gDRIPriv = (VIADRIPtr)sPriv->pDevPriv;
    PFNGLXSCRENABLEEXTENSIONPROC glx_enable_extension =
      (PFNGLXSCRENABLEEXTENSIONPROC) (*dri_interface->getProcAddress("glxEnableExtension"));
    void * const psc = sPriv->psc->screenConfigs;

    if (sPriv->devPrivSize != sizeof(VIADRIRec)) {
      fprintf(stderr,"\nERROR!  sizeof(VIADRIRec) does not match passed size from device driver\n");
      return GL_FALSE;
    }

    /* Allocate the private area */
    viaScreen = (viaScreenPrivate *) CALLOC(sizeof(viaScreenPrivate));
    if (!viaScreen) {
        __driUtilMessage("viaInitDriver: alloc viaScreenPrivate struct failed");
        return GL_FALSE;
    }

    /* parse information in __driConfigOptions */
    driParseOptionInfo (&viaScreen->optionCache,
			__driConfigOptions, __driNConfigOptions);


    viaScreen->driScrnPriv = sPriv;
    sPriv->private = (void *)viaScreen;

    viaScreen->deviceID = gDRIPriv->deviceID;
    viaScreen->width = gDRIPriv->width;
    viaScreen->height = gDRIPriv->height;
    viaScreen->mem = gDRIPriv->mem;
    viaScreen->bitsPerPixel = gDRIPriv->bytesPerPixel * 8;
    viaScreen->bytesPerPixel = gDRIPriv->bytesPerPixel;
    viaScreen->fbOffset = 0;
    viaScreen->fbSize = gDRIPriv->fbSize;
    viaScreen->irqEnabled = gDRIPriv->irqEnabled;
    viaScreen->irqEnabled = 1;

    if (VIA_DEBUG & DEBUG_DRI) {
	fprintf(stderr, "deviceID = %08x\n", viaScreen->deviceID);
	fprintf(stderr, "width = %08x\n", viaScreen->width);	
	fprintf(stderr, "height = %08x\n", viaScreen->height);	
	fprintf(stderr, "cpp = %08x\n", viaScreen->cpp);	
	fprintf(stderr, "fbOffset = %08x\n", viaScreen->fbOffset);	
    }

    viaScreen->bufs = via_create_empty_buffers();
    if (viaScreen->bufs == NULL) {
        __driUtilMessage("viaInitDriver: via_create_empty_buffers() failed");
        FREE(viaScreen);
        return GL_FALSE;
    }

    if (drmMap(sPriv->fd,
               gDRIPriv->regs.handle,
               gDRIPriv->regs.size,
               &viaScreen->reg) != 0) {
        FREE(viaScreen);
        sPriv->private = NULL;
        __driUtilMessage("viaInitDriver: drmMap regs failed");
        return GL_FALSE;
    }

    if (gDRIPriv->agp.size) {
        if (drmMap(sPriv->fd,
                   gDRIPriv->agp.handle,
                   gDRIPriv->agp.size,
	           (drmAddress *)&viaScreen->agpLinearStart) != 0) {
	    drmUnmap(viaScreen->reg, gDRIPriv->regs.size);
	    FREE(viaScreen);
	    sPriv->private = NULL;
	    __driUtilMessage("viaInitDriver: drmMap agp failed");
	    return GL_FALSE;
	}
	    
	/*
	 * FIXME: This is an invalid assumption that works until handle is
	 * changed to mean something else than the 32-bit physical AGP address.
	 */

	viaScreen->agpBase = gDRIPriv->agp.handle;
    } else
	viaScreen->agpLinearStart = 0;

    viaScreen->sareaPrivOffset = gDRIPriv->sarea_priv_offset;

    if ( glx_enable_extension != NULL ) {
       if ( viaScreen->irqEnabled ) {
	  (*glx_enable_extension)( psc, "GLX_SGI_swap_control" );
	  (*glx_enable_extension)( psc, "GLX_SGI_video_sync" );
	  (*glx_enable_extension)( psc, "GLX_MESA_swap_control" );
       }

       (*glx_enable_extension)( psc, "GLX_MESA_swap_frame_usage" );
    }

    return GL_TRUE;
}

static void
viaDestroyScreen(__DRIscreenPrivate *sPriv)
{
    viaScreenPrivate *viaScreen = (viaScreenPrivate *)sPriv->private;
    VIADRIPtr gDRIPriv = (VIADRIPtr)sPriv->pDevPriv;

    drmUnmap(viaScreen->reg, gDRIPriv->regs.size);
    if (gDRIPriv->agp.size)
        drmUnmap(viaScreen->agpLinearStart, gDRIPriv->agp.size);

    via_free_empty_buffers(viaScreen->bufs);

    FREE(viaScreen);
    sPriv->private = NULL;
}


static GLboolean
viaCreateBuffer(__DRIscreenPrivate *driScrnPriv,
                __DRIdrawablePrivate *driDrawPriv,
                const __GLcontextModes *mesaVis,
                GLboolean isPixmap)
{
    viaScreenPrivate *screen = (viaScreenPrivate *) driScrnPriv->private;

    GLboolean swStencil = (mesaVis->stencilBits > 0 && 
			   mesaVis->depthBits != 24);
    GLboolean swAccum = mesaVis->accumRedBits > 0;

    if (isPixmap) {
       /* KW: This needs work, disabled for now:
	*/
#if 0
	driDrawPriv->driverPrivate = (void *)
            _mesa_create_framebuffer(mesaVis,
                                     GL_FALSE,	/* software depth buffer? */
                                     swStencil,
                                     mesaVis->accumRedBits > 0,
                                     GL_FALSE 	/* s/w alpha planes */);

        return (driDrawPriv->driverPrivate != NULL);
#endif
	return GL_FALSE;
    }
    else {
      struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);

      /* The front color, back color and depth renderbuffers are
       * set up later in calculate_buffer_parameters().
       * Only create/connect software-based buffers here.
       */

#if 000
      /* This code _should_ be put to use.  We have to move the
       * viaRenderbuffer members out of the via_context structure.
       * Those members should just be the renderbuffers hanging off the