path: root/xc/lib/GL/mesa/src/drv/r128/r128_xmesa.c

/* $XFree86$ */
/**************************************************************************

Copyright 1999, 2000 ATI Technologies Inc. and Precision Insight, Inc.,
                                               Cedar Park, Texas. 
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
on 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
ATI, PRECISION INSIGHT AND/OR THEIR 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.

**************************************************************************/

/*
 * Authors:
 *   Kevin E. Martin <kevin@precisioninsight.com>
 *
 */

#ifdef GLX_DIRECT_RENDERING

/* r128 DDX driver includes */
#include "r128_dri.h"
#include "r128_reg.h"

/* r128 Mesa driver includes */
#include "r128_init.h"
#include "r128_context.h"
#include "r128_xmesa.h"
#include "r128_dd.h"
#include "r128_state.h"
#include "r128_span.h"
#include "r128_depth.h"
#include "r128_tex.h"
#include "r128_swap.h"
#include "r128_tris.h"
#include "r128_vb.h"

/* Mesa src includes */
#include "context.h"
#if 0
#include "vbxform.h"
#include "matrix.h"
#endif

#ifdef DEBUG_LOCKING
char *prevLockFile = NULL;
int   prevLockLine = 0;
#endif

r128ContextPtr r128Context = NULL;

static int count_bits(unsigned int n)
{
    int bits = 0;

    while (n > 0) {
	if (n & 1) bits++;
	n >>= 1;
    }
    return bits;
}

GLboolean XMesaInitDriver(__DRIscreenPrivate *sPriv)
{
    r128ScreenPtr r128Screen;
    R128DRIPtr    r128DRIPriv = (R128DRIPtr)sPriv->pDevPriv;

    /* Allocate the private area */
    r128Screen = (r128ScreenPtr)Xmalloc(sizeof(*r128Screen));
    if (!r128Screen) return GL_FALSE;

    r128Screen->mmioRgn.handle = r128DRIPriv->registerHandle;
    r128Screen->mmioRgn.size   = r128DRIPriv->registerSize;
    if (drmMap(sPriv->fd,
	       r128Screen->mmioRgn.handle,
	       r128Screen->mmioRgn.size,
	       (drmAddressPtr)&r128Screen->mmio)) {
	Xfree(r128Screen);
	return GL_FALSE;
    }

    r128Screen->agpRgn.handle  = r128DRIPriv->agpHandle;
    r128Screen->agpRgn.size    = r128DRIPriv->agpSize;
    if (drmMap(sPriv->fd,
	       r128Screen->agpRgn.handle,
	       r128Screen->agpRgn.size,
	       (drmAddressPtr)&r128Screen->agp)) {
	drmUnmap((drmAddress)r128Screen->mmio, r128Screen->mmioRgn.size);
	Xfree(r128Screen);
	return GL_FALSE;
    }

    r128Screen->deviceID       = r128DRIPriv->deviceID;

    r128Screen->width          = r128DRIPriv->width;
    r128Screen->height         = r128DRIPriv->height;
    r128Screen->depth          = r128DRIPriv->depth;
    r128Screen->bpp            = r128DRIPriv->bpp;

    r128Screen->fb             = sPriv->pFB;
    r128Screen->fbOffset       = sPriv->fbOrigin;
    r128Screen->fbStride       = sPriv->fbStride;
    r128Screen->fbSize         = sPriv->fbSize;

    r128Screen->fbX            = r128DRIPriv->fbX;
    r128Screen->fbY            = r128DRIPriv->fbY;
    r128Screen->backX          = r128DRIPriv->backX;
    r128Screen->backY          = r128DRIPriv->backY;
    r128Screen->depthX         = r128DRIPriv->depthX;
    r128Screen->depthY         = r128DRIPriv->depthY;
    r128Screen->textureX       = r128DRIPriv->textureX;
    r128Screen->textureY       = r128DRIPriv->textureY;
    r128Screen->textureSize    = r128DRIPriv->textureSize;

#if 0
    r128Screen->backX          = 0;
    r128Screen->backY          = r128DRIPriv->height/2;
    r128Screen->depthX         = r128DRIPriv->width/2;
    r128Screen->depthY         = r128DRIPriv->height/2;
#endif

    r128Screen->CCEMode        = r128DRIPriv->CCEMode;
    r128Screen->CCEFifoSize    = r128DRIPriv->CCEFifoSize;

    r128Screen->ringStart      = r128DRIPriv->ringStart;
    r128Screen->ringSize       = r128DRIPriv->ringSize;
    r128Screen->ringWritePtr   = &r128DRIPriv->ringWrite;
    r128Screen->ringReadPtr    = (int *)(r128Screen->agp
					 + r128DRIPriv->ringReadOffset);

    r128Screen->MMIOFifoSlots  = 0;
    r128Screen->CCEFifoSlots   = 0;

    r128Screen->CCEFifoAddr    = R128_PM4_FIFO_DATA_EVEN;

    r128Screen->driScreen      = sPriv;

    sPriv->private = (void *)r128Screen;

    r128TriangleFuncsInit();
    r128SetupInit();

    return GL_TRUE;
}

void XMesaResetDriver(__DRIscreenPrivate *sPriv)
{
    r128ScreenPtr r128Screen = (r128ScreenPtr)sPriv->private;

    drmUnmap((drmAddress)r128Screen->mmio, r128Screen->mmioRgn.size);
    drmUnmap((drmAddress)r128Screen->agp,  r128Screen->agpRgn.size);

    Xfree(r128Screen);
    sPriv->private = NULL;
}

XMesaVisual XMesaCreateVisual(XMesaDisplay *display,
			      XMesaVisualInfo visinfo,
			      GLboolean rgb_flag,
			      GLboolean alpha_flag,
			      GLboolean db_flag,
			      GLboolean stereo_flag,
			      GLboolean ximage_flag,
			      GLint depth_size,
			      GLint stencil_size,
			      GLint accum_size,
			      GLint level)
{
    XMesaVisual v;

    /* FIXME: Only RGB visuals are currently supported */
    if (!rgb_flag) return NULL;

    v = (XMesaVisual)Xmalloc(sizeof(*v));
    if (!v) return NULL;

    v->visinfo = (XVisualInfo *)Xmalloc(sizeof(*visinfo));
    if(!v->visinfo) {
	Xfree(v);
	return NULL;
    }
    memcpy(v->visinfo, visinfo, sizeof(*visinfo));

    v->display = display;
    v->level = level;
  
    v->gl_visual = (GLvisual *)Xmalloc(sizeof(*v->gl_visual));
    if (!v->gl_visual) {
	Xfree(v->visinfo);
	XFree(v);
	return NULL;
    }

    v->gl_visual->RGBAflag   = rgb_flag;
    v->gl_visual->DBflag     = db_flag;
    v->gl_visual->StereoFlag = stereo_flag;

    v->gl_visual->RedBits   = count_bits(visinfo->red_mask);
    v->gl_visual->GreenBits = count_bits(visinfo->green_mask);
    v->gl_visual->BlueBits  = count_bits(visinfo->blue_mask);
    v->gl_visual->AlphaBits = 0; /* Not currently supported */

    v->gl_visual->AccumBits   = accum_size;
    v->gl_visual->DepthBits   = depth_size;
    v->gl_visual->StencilBits = stencil_size;

    return v;
}

void XMesaDestroyVisual(XMesaVisual v)
{
    Xfree(v->gl_visual);
    Xfree(v->visinfo);
    Xfree(v);
}

XMesaContext XMesaCreateContext(XMesaVisual v, XMesaContext share_list,
				__DRIcontextPrivate *driContextPriv)
{
    XMesaContext    c;
    r128ContextPtr  r128ctx;
    GLcontext      *shareCtx, *glCtx;

    c = (XMesaContext)Xmalloc(sizeof(*c));
    if (!c) {
	return NULL;
    }

    r128ctx = (r128ContextPtr)Xmalloc(sizeof(*r128ctx));
    if (!r128ctx) {
	Xfree(c);
	return NULL;
    }

    /* Initialize XMesaContext */
    c->display        = v->display;
    c->xm_visual      = v;
    c->xm_buffer      = NULL; /* Set by MakeCurrent */
    c->driContextPriv = driContextPriv;
    c->private        = (void *)r128ctx;

    if (share_list)
	shareCtx = ((r128ContextPtr)(share_list->private))->glCtx;
    else
	shareCtx = NULL;

    /* Initialize r128Context */
    r128ctx->xmCtx       = c;
    r128ctx->glCtx       = gl_create_context(v->gl_visual,
					     shareCtx,
					     (void *)r128ctx,
					     GL_TRUE);
    r128ctx->display     = v->display;
    r128ctx->driContext  = driContextPriv;
    r128ctx->driDrawable = NULL; /* Set by XMesaMakeCurrent */
    r128ctx->dirty       = R128_ALL_DIRTY;
    r128ctx->needClip    = GL_TRUE;
    r128ctx->r128Screen  =
	(r128ScreenPtr)(driContextPriv->driScreenPriv->private);

    /* Initialize GLcontext */
    glCtx = r128ctx->glCtx;

    r128DDInitExtensions(glCtx);

    r128DDInitDriverFuncs(glCtx);
    r128DDInitStateFuncs(glCtx);
    r128DDInitSpanFuncs(glCtx);
    r128DDInitDepthFuncs(glCtx);
    r128DDInitTextureFuncs(glCtx);

#if 1
    /* FIXME: Move to r128_tris.c */
    glCtx->Driver.TriangleCaps = (DD_TRI_CULL
				  | DD_TRI_LIGHT_TWOSIDE
				  | DD_TRI_OFFSET);
    glCtx->TriangleCaps |= DD_CLIP_FOG_COORD;

    if (glCtx->VB) r128DDRegisterVB(glCtx->VB);
#endif

    r128DDInitState(r128ctx);

    return c;
}

void XMesaDestroyContext(XMesaContext c)
{
    r128ContextPtr r128ctx = (r128ContextPtr)c->private;

    if (r128ctx) {
	gl_destroy_context(r128ctx->glCtx);
	Xfree(r128ctx);
	c->private = NULL;
    }

    if (c->private == (void *)r128Context) {
	r128Context = NULL;
    }
}

XMesaBuffer XMesaCreateWindowBuffer(XMesaVisual v,
				    XMesaWindow w,
				    __DRIdrawablePrivate *driDrawPriv)
{
    XMesaBuffer xm_buf;

    xm_buf = (XMesaBuffer)Xmalloc(sizeof(*xm_buf));
    xm_buf->gl_buffer = gl_create_framebuffer(v->gl_visual);
    xm_buf->driDrawPriv = driDrawPriv;

    return xm_buf;
}

XMesaBuffer XMesaCreatePixmapBuffer(XMesaVisual v,
				    XMesaPixmap p,
				    XMesaColormap c,
				    __DRIdrawablePrivate *driDrawPriv)
{
    XMesaBuffer xm_buf;

    xm_buf = (XMesaBuffer)Xmalloc(sizeof(*xm_buf));
    xm_buf->gl_buffer = gl_create_framebuffer(v->gl_visual);
    xm_buf->driDrawPriv = driDrawPriv;

    return xm_buf;
}

void XMesaDestroyBuffer(XMesaBuffer b)
{
    gl_destroy_framebuffer(b->gl_buffer);
    Xfree(b);
}

void XMesaSwapBuffers(XMesaBuffer b)
{
    /*
    ** FIXME: This assumes buffer is currently bound to a context.
    ** This needs to be able to swap buffers when not currently bound.
    */
    if (r128Context == NULL) return;

    r128SwapBuffers(r128Context);
}

GLboolean XMesaMakeCurrent(XMesaContext c, XMesaBuffer b)
{
    if (c) {
	r128ContextPtr oldCtx = r128Context;

	if (r128Context
	    && c->private == (void *)r128Context
	    && b->driDrawPriv == r128Context->driDrawable) return GL_TRUE;

	r128Context = (r128ContextPtr)c->private;

	if (oldCtx) {
	    r128Context->dirty = R128_REQUIRE_QUIESCENCE | R128_START_CCE;
	    if (oldCtx != r128Context)
		r128Context->dirty |= R128_UPDATE_CONTEXT;
	    if (oldCtx->driDrawable != b->driDrawPriv)
		r128Context->dirty |= R128_UPDATE_CLIPRECTS;
	} else {
	    r128Context->dirty = R128_ALL_DIRTY;
	}

	r128Context->driDrawable = b->driDrawPriv;

	gl_make_current(r128Context->glCtx, b->gl_buffer);

	if (!r128Context->glCtx->Viewport.Width) {
	    gl_Viewport(r128Context->glCtx, 0, 0,
			b->driDrawPriv->w, b->driDrawPriv->h);
	}
    } else {
	gl_make_current(0,0);
	r128Context = NULL;
    }

    return GL_TRUE;
}

void XMesaUpdateState(XMesaContext c)
{
    r128ContextPtr        r128ctx = (r128ContextPtr)c->private;
    __DRIdrawablePrivate *dPriv   = r128ctx->driDrawable;
    __DRIscreenPrivate   *sPriv   = r128ctx->r128Screen->driScreen;
    int                   stamp   = dPriv->lastStamp;

    /*
     * The window might have moved, so we might need to get new
     * cliprects.
     *
     * NOTE: This releases and regrabs the hw lock, so all state
     * checking must be done *after* this call.
     */
    XMESA_VALIDATE_DRAWABLE_INFO(r128ctx->display, sPriv, dPriv);

    r128ctx->dirty |= R128_ALL_DIRTY; /* FIXME: Optimize this!! */

    if (stamp != dPriv->lastStamp) { /* FIXME??: handle window moves */
	r128ctx->dirty |= R128_UPDATE_CLIPRECTS;
    }

    if (r128ctx->dirty) r128UpdateStateLocked(r128ctx);
}

#endif