gamma_inithw.c

Mesa is an open-source implementation of the OpenGL specification - a system for rendering interacti

/*
 * Copyright 2001 by Alan Hourihane.
 *
 * Permission to use, copy, modify, distribute, and sell this software and its
 * documentation for any purpose is hereby granted without fee, provided that
 * the above copyright notice appear in all copies and that both that
 * copyright notice and this permission notice appear in supporting
 * documentation, and that the name of Alan Hourihane not be used in
 * advertising or publicity pertaining to distribution of the software without
 * specific, written prior permission.  Alan Hourihane makes no representations
 * about the suitability of this software for any purpose.  It is provided
 * "as is" without express or implied warranty.
 *
 * ALAN HOURIHANE DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE,
 * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO
 * EVENT SHALL ALAN HOURIHANE BE LIABLE FOR ANY SPECIAL, INDIRECT OR
 * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE,
 * DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER
 * TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
 * PERFORMANCE OF THIS SOFTWARE.
 *
 * Authors:  Alan Hourihane, <[e-mail]>
 *           Kevin E. Martin <[e-mail]>
 *
 */
/* $XFree86: xc/lib/GL/mesa/src/drv/gamma/gamma_inithw.c,v 1.9 2002/10/30 12:51:29 alanh Exp $ */

#include "gamma_context.h"
#include "glint_dri.h"

void gammaInitHW( gammaContextPtr gmesa )
{
    GLINTDRIPtr gDRIPriv = (GLINTDRIPtr)gmesa->driScreen->pDevPriv;
    int i;

    if (gDRIPriv->numMultiDevices == 2) {
	/* Set up each MX's ScanLineOwnership for OpenGL */
	CHECK_DMA_BUFFER(gmesa, 5);
	WRITE(gmesa->buf, BroadcastMask, 1);
	WRITE(gmesa->buf, ScanLineOwnership, 5); /* Use bottom left as [0,0] */
	WRITE(gmesa->buf, BroadcastMask, 2);
	WRITE(gmesa->buf, ScanLineOwnership, 1); /* Use bottom left as [0,0] */
	/* Broadcast to both MX's */
	WRITE(gmesa->buf, BroadcastMask, 3);
	FLUSH_DMA_BUFFER(gmesa); 
    }

    gmesa->AlphaBlendMode = (AlphaBlendModeDisable |
			     AB_Src_One |
			     AB_Dst_Zero |
			     AB_NoAlphaBufferPresent |
			     AB_ColorFmt_8888 |
			     AB_ColorOrder_RGB |
			     AB_OpenGLType |
			     AB_AlphaDst_FBData |
			     AB_ColorConversionScale |
			     AB_AlphaConversionScale);

    gmesa->DitherMode = DitherModeEnable | DM_ColorOrder_RGB;

    switch (gmesa->gammaScreen->cpp) {
	case 2:
    		gmesa->DitherMode |= DM_ColorFmt_5555;
		gmesa->AlphaBlendMode |= AB_ColorFmt_5555;
		CHECK_DMA_BUFFER(gmesa, 1);
		WRITE(gmesa->buf, PixelSize, 1);
		break;
	case 4:
    		gmesa->DitherMode |= DM_ColorFmt_8888;
		gmesa->AlphaBlendMode |= AB_ColorFmt_8888;
		WRITE(gmesa->buf, PixelSize, 0);
		break;
    }

    /* FIXME for stencil, gid, etc */
    switch (gmesa->DepthSize) {
	case 16:
   		gmesa->LBReadFormat = 
			 (LBRF_DepthWidth16    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos16    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos24 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos32         );
   		gmesa->LBWriteFormat = 
			 (LBRF_DepthWidth16    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos16    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos24 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos32         );
		break;
	case 24:
   		gmesa->LBReadFormat = 
			 (LBRF_DepthWidth24    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos24    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos32 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos36         );
   		gmesa->LBWriteFormat = 
			 (LBRF_DepthWidth24    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos24    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos32 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos36         );
		break;
	case 32:
   		gmesa->LBReadFormat = 
			 (LBRF_DepthWidth32    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos32    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos40 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos44         );
   		gmesa->LBWriteFormat = 
			 (LBRF_DepthWidth32    | 
                          LBRF_StencilWidth8   |
                          LBRF_StencilPos32    |
                          LBRF_FrameCount8     |
                          LBRF_FrameCountPos40 |
                          LBRF_GIDWidth4       |
                          LBRF_GIDPos44         );
		break;
    }

    gmesa->FBHardwareWriteMask = 0xffffffff;
    gmesa->FogMode = FogModeDisable;
    gmesa->ClearDepth = 0xffffffff;
    gmesa->AreaStippleMode = AreaStippleModeDisable;
    gmesa->x = 0;
    gmesa->y = 0;
    gmesa->w = 0;
    gmesa->h = 0;
    gmesa->FrameCount = 0;
    gmesa->MatrixMode = GL_MODELVIEW;
    gmesa->ModelViewCount = 0;
    gmesa->ProjCount = 0;
    gmesa->TextureCount = 0;
    gmesa->PointMode = PM_AntialiasQuality_4x4;
    gmesa->LineMode = LM_AntialiasQuality_4x4;
    gmesa->TriangleMode = TM_AntialiasQuality_4x4;
    gmesa->AntialiasMode = AntialiasModeDisable;

    for (i = 0; i < 16; i++)
	if (i % 5 == 0)
	    gmesa->ModelView[i] =
		gmesa->Proj[i] =
		gmesa->ModelViewProj[i] =
		gmesa->Texture[i] = 1.0;
	else
	    gmesa->ModelView[i] =
		gmesa->Proj[i] =
		gmesa->ModelViewProj[i] =
		gmesa->Texture[i] = 0.0;

    gmesa->LBReadMode = (LBReadSrcDisable |
			 LBReadDstDisable |
			 LBDataTypeDefault |
			 LBWindowOriginBot | 
			 gDRIPriv->pprod);
    gmesa->FBReadMode = (FBReadSrcDisable |
			 FBReadDstDisable |
			 FBDataTypeDefault |
			 FBWindowOriginBot |  
			 gDRIPriv->pprod);
 
    if (gDRIPriv->numMultiDevices == 2) {
	gmesa->LBReadMode |= LBScanLineInt2;
	gmesa->FBReadMode |= FBScanLineInt2;
        gmesa->LBWindowBase = gmesa->driScreen->fbWidth *
			     (gmesa->driScreen->fbHeight/2 - 1);
    	gmesa->FBWindowBase = gmesa->driScreen->fbWidth * 
			     (gmesa->driScreen->fbHeight/2 - 1);
    } else {
        gmesa->LBWindowBase = gmesa->driScreen->fbWidth *
			     (gmesa->driScreen->fbHeight - 1);
    	gmesa->FBWindowBase = gmesa->driScreen->fbWidth * 
			     (gmesa->driScreen->fbHeight - 1);
    }

    gmesa->Begin = (B_AreaStippleDisable |
		    B_LineStippleDisable |
		    B_AntiAliasDisable |
		    B_TextureDisable |
		    B_FogDisable |
		    B_SubPixelCorrectEnable |
		    B_PrimType_Null);

    gmesa->ColorDDAMode = (ColorDDAEnable |
			   ColorDDAGouraud);

    gmesa->GeometryMode = (GM_TextureDisable |
			   GM_FogDisable |
			   GM_FogExp |
			   GM_FrontPolyFill |
			   GM_BackPolyFill |
			   GM_FrontFaceCCW |
			   GM_PolyCullDisable |
			   GM_PolyCullBack |
			   GM_ClipShortLinesDisable |
			   GM_ClipSmallTrisDisable |
			   GM_RenderMode |
			   GM_Feedback2D |
			   GM_CullFaceNormDisable |
			   GM_AutoFaceNormDisable |
			   GM_GouraudShading |
			   GM_UserClipNone |
			   GM_PolyOffsetPointDisable |
			   GM_PolyOffsetLineDisable |
			   GM_PolyOffsetFillDisable |
			   GM_InvertFaceNormCullDisable);

    gmesa->AlphaTestMode = (AlphaTestModeDisable |
			    AT_Always);

    gmesa->AB_FBReadMode_Save = gmesa->AB_FBReadMode = 0;

    gmesa->Window = (WindowEnable  | /* For GID testing */
		     W_PassIfEqual |
		     (0 << 5)); /* GID part is set from draw priv (below) */

    gmesa->NotClipped = GL_FALSE;
    gmesa->WindowChanged = GL_TRUE;

    gmesa->Texture1DEnabled = GL_FALSE;
    gmesa->Texture2DEnabled = GL_FALSE;

    gmesa->DepthMode |= (DepthModeDisable |
			DM_WriteMask |
			DM_Less);

    gmesa->DeltaMode |= (DM_SubPixlCorrectionEnable |
			DM_SmoothShadingEnable |
			DM_Target500TXMX);

    gmesa->LightingMode = LightingModeDisable | LightingModeSpecularEnable;
    gmesa->Light0Mode = LNM_Off;
    gmesa->Light1Mode = LNM_Off;
    gmesa->Light2Mode = LNM_Off;
    gmesa->Light3Mode = LNM_Off;
    gmesa->Light4Mode = LNM_Off;
    gmesa->Light5Mode = LNM_Off;
    gmesa->Light6Mode = LNM_Off;
    gmesa->Light7Mode = LNM_Off;
    gmesa->Light8Mode = LNM_Off;
    gmesa->Light9Mode = LNM_Off;
    gmesa->Light10Mode = LNM_Off;
    gmesa->Light11Mode = LNM_Off;
    gmesa->Light12Mode = LNM_Off;
    gmesa->Light13Mode = LNM_Off;
    gmesa->Light14Mode = LNM_Off;
    gmesa->Light15Mode = LNM_Off;

    gmesa->LogicalOpMode = LogicalOpModeDisable;

    gmesa->MaterialMode = MaterialModeDisable;

    gmesa->ScissorMode = UserScissorDisable | ScreenScissorDisable;

    gmesa->TransformMode = XM_UseModelViewProjMatrix |
				    XM_TexGenModeS_None |
				    XM_TexGenModeT_None |
				    XM_TexGenModeR_None |
				    XM_TexGenModeQ_None;

    CHECK_DMA_BUFFER(gmesa, 20);
    WRITE(gmesa->buf, LineStippleMode, 0);
    WRITE(gmesa->buf, RouterMode, 0);
    WRITE(gmesa->buf, TextureAddressMode, 0);