/* -*- mode: C; tab-width:8; c-basic-offset:2 -*- */
/*
* Mesa 3-D graphics library
* Version: 3.3
*
* Copyright (C) 1999-2000 Brian Paul 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, sublicense,
* 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 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 NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL 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.
*
*
* Original Mesa / 3Dfx device driver (C) 1999 David Bucciarelli, by the
* terms stated above.
*
* Thank you for your contribution, David!
*
* Please make note of the above copyright/license statement. If you
* contributed code or bug fixes to this code under the previous (GNU
* Library) license and object to the new license, your code will be
* removed at your request. Please see the Mesa docs/COPYRIGHT file
* for more information.
*
* Additional Mesa/3Dfx driver developers:
* Daryll Strauss <daryll@precisioninsight.com>
* Keith Whitwell <keith@precisioninsight.com>
*
* See fxapi.h for more revision/author details.
*/
/* fxdd.c - 3Dfx VooDoo Mesa device driver functions */
#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif
#if defined(FX)
#include "image.h"
#include "types.h"
#include "fxdrv.h"
#include "enums.h"
#include "extensions.h"
#include "pb.h"
/* These lookup table are used to extract RGB values in [0,255] from
* 16-bit pixel values.
*/
GLubyte FX_PixelToR[0x10000];
GLubyte FX_PixelToG[0x10000];
GLubyte FX_PixelToB[0x10000];
/*
* Initialize the FX_PixelTo{RGB} arrays.
* Input: bgrOrder - if TRUE, pixels are in BGR order, else RGB order.
*/
void fxInitPixelTables(fxMesaContext fxMesa, GLboolean bgrOrder)
{
GLuint pixel;
fxMesa->bgrOrder=bgrOrder;
for (pixel = 0; pixel <= 0xffff; pixel++) {
GLuint r, g, b;
if (bgrOrder) {
r = (pixel & 0x001F) << 3;
g = (pixel & 0x07E0) >> 3;
b = (pixel & 0xF800) >> 8;
}
else {
r = (pixel & 0xF800) >> 8;
g = (pixel & 0x07E0) >> 3;
b = (pixel & 0x001F) << 3;
}
r = r * 255 / 0xF8; /* fill in low-order bits */
g = g * 255 / 0xFC;
b = b * 255 / 0xF8;
FX_PixelToR[pixel] = r;
FX_PixelToG[pixel] = g;
FX_PixelToB[pixel] = b;
}
}
/**********************************************************************/
/***** Miscellaneous functions *****/
/**********************************************************************/
/* Enalbe/Disable dithering */
static void fxDDDither(GLcontext *ctx, GLboolean enable)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDDither()\n");
}
if (enable) {
FX_grDitherMode(GR_DITHER_4x4);
} else {
FX_grDitherMode(GR_DITHER_DISABLE);
}
}
/* Return buffer size information */
static void fxDDBufferSize(GLcontext *ctx, GLuint *width, GLuint *height)
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDBufferSize(...) Start\n");
}
*width=fxMesa->width;
*height=fxMesa->height;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDBufferSize(...) End\n");
}
}
/* Set current drawing color */
static void fxDDSetColor(GLcontext *ctx, GLubyte red, GLubyte green,
GLubyte blue, GLubyte alpha )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLubyte col[4];
ASSIGN_4V( col, red, green, blue, alpha );
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDSetColor(%d,%d,%d,%d)\n",red,green,blue,alpha);
}
fxMesa->color=FXCOLOR4(col);
}
/* Implements glClearColor() */
static void fxDDClearColor(GLcontext *ctx, GLubyte red, GLubyte green,
GLubyte blue, GLubyte alpha )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLubyte col[4];
ASSIGN_4V( col, red, green, blue, 255 );
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDClearColor(%d,%d,%d,%d)\n",red,green,blue,alpha);
}
fxMesa->clearC=FXCOLOR4( col );
fxMesa->clearA=alpha;
}
/* Clear the color and/or depth buffers */
static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
GLint x, GLint y, GLint width, GLint height )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
const GLuint colorMask = *((GLuint *) &ctx->Color.ColorMask);
const FxU16 clearD = (FxU16) (ctx->Depth.Clear * 0xffff);
GLbitfield softwareMask = mask & (DD_STENCIL_BIT | DD_ACCUM_BIT);
if (MESA_VERBOSE & VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDClear(%d,%d,%d,%d)\n", (int) x, (int) y,
(int) width, (int) height);
}
if (colorMask != 0xffffffff) {
/* do color buffer clears in software */
softwareMask |= (mask & (DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT));
mask &= ~(DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT);
}
/*
* This could probably be done fancier but doing each possible case
* explicitly is less error prone.
*/
switch (mask) {
case DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
/* back buffer & depth */
FX_grDepthMask(FXTRUE);
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
if (!ctx->Depth.Mask) {
FX_grDepthMask(FXFALSE);
}
break;
case DD_FRONT_LEFT_BIT | DD_DEPTH_BIT:
/* XXX it appears that the depth buffer isn't cleared when
* glRenderBuffer(GR_BUFFER_FRONTBUFFER) is set.
* This is a work-around/
*/
/* clear depth */
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
FX_grColorMask(FXFALSE,FXFALSE);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
/* clear front */
FX_grColorMask(FXTRUE, ctx->Color.ColorMask[ACOMP] && fxMesa->haveAlphaBuffer);
FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
break;
case DD_BACK_LEFT_BIT:
/* back buffer only */
FX_grDepthMask(FXFALSE);
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
if (!ctx->Depth.Mask) {
FX_grDepthMask(FXFALSE);
}
break;
case DD_FRONT_LEFT_BIT:
/* front buffer only */
FX_grDepthMask(FXFALSE);
FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
if (!ctx->Depth.Mask) {
FX_grDepthMask(FXFALSE);
}
break;
case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT:
/* front and back */
FX_grDepthMask(FXFALSE);
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
if (!ctx->Depth.Mask) {
FX_grDepthMask(FXFALSE);
}
break;
case DD_FRONT_LEFT_BIT | DD_BACK_LEFT_BIT | DD_DEPTH_BIT:
/* clear front */
FX_grDepthMask(FXFALSE);
FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
/* clear back and depth */
FX_grDepthMask(FXTRUE);
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, clearD);
if (!ctx->Depth.Mask) {
FX_grDepthMask(FXFALSE);
}
break;
case DD_DEPTH_BIT:
/* just the depth buffer */
FX_grColorMask(FXFALSE,FXFALSE);
FX_grBufferClear(fxMesa->clearC, fxMesa->clearA,
(FxU16)(ctx->Depth.Clear*0xffff));
FX_grColorMask(FXTRUE, ctx->Color.ColorMask[ACOMP] && fxMesa->haveAlphaBuffer);
break;
default:
/* error */
;
}
return softwareMask;
}
/* Set the buffer used for drawing */
/* XXX support for separate read/draw buffers hasn't been tested */
static GLboolean fxDDSetDrawBuffer(GLcontext *ctx, GLenum mode )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDSetBuffer(%x)\n", (int) mode);
}
if (mode == GL_FRONT_LEFT) {
fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
FX_grRenderBuffer(fxMesa->currentFB);
return GL_TRUE;
}
else if (mode == GL_BACK_LEFT) {
fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
FX_grRenderBuffer(fxMesa->currentFB);
return GL_TRUE;
}
else {
return GL_FALSE;
}
}
/* Set the buffer used for reading */
/* XXX support for separate read/draw buffers hasn't been tested */
static void fxDDSetReadBuffer(GLcontext *ctx, GLframebuffer *buffer,
GLenum mode )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
(void) buffer;
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxDDSetBuffer(%x)\n", (int) mode);
}
if (mode == GL_FRONT_LEFT) {
fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
FX_grRenderBuffer(fxMesa->currentFB);
}
else if (mode == GL_BACK_LEFT) {
fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
FX_grRenderBuffer(fxMesa->currentFB);
}
}
#ifdef XF86DRI
/* test if window coord (px,py) is visible */
static GLboolean inClipRects(fxMesaContext fxMesa, int px, int py)
{
int i;
for (i=0; i<fxMesa->numClipRects; i++) {
if ((px>=fxMesa->pClipRects[i].x1) &&
(px<fxMesa->pClipRects[i].x2) &&
(py>=fxMesa->pClipRects[i].y1) &&
(py<fxMesa->pClipRects[i].y2)) return GL_TRUE;
}
return GL_FALSE;
}
#endif
static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
GLsizei width, GLsizei height,
const struct gl_pixelstore_attrib *unpack,
const GLubyte *bitmap)
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GrLfbInfo_t info;
FxU16 color;
const struct gl_pixelstore_attrib *finalUnpack;
struct gl_pixelstore_attrib scissoredUnpack;
/* check if there's any raster operations enabled which we can't handle */
if (ctx->RasterMask & (ALPHATEST_BIT |
BLEND_BIT |
DEPTH_BIT |
FOG_BIT |
LOGIC_OP_BIT |
SCISSOR_BIT |
STENCIL_BIT |
MASKING_BIT |
ALPHABUF_BIT |
MULTI_DRAW_BIT))
return GL_FALSE;
if (ctx->Scissor.Enabled) {
/* This is a bit tricky, but by carefully adjusting the px, py,
* width, height, skipPixels and skipRows values we can do
* scissoring without special code in the rendering loop.
*/
/* we'll construct a new pixelstore struct */
finalUnpack = &scissoredUnpack;
scissoredUnpack = *unpack;
if (scissoredUnpack.RowLength == 0)
scissoredUnpack.RowLength = width;
/* clip left */
if (px < ctx->Scissor.X) {
scissoredUnpack.SkipPixels += (ctx->Scissor.X - px);
width -= (ctx->Scissor.X - px);
px = ctx->Scissor.X;
}
/* clip right */
if (px + width >= ctx->Scissor.X + ctx->Scissor.Width) {
width -= (px + width - (ctx->Scissor.X + ctx->Scissor.Width));
}
/* clip bottom */
if (py < ctx->Scissor.Y) {
scissoredUnpack.SkipRows += (ctx->Scissor.Y - py);
height -= (ctx->Scissor.Y - py);
py = ctx->Scissor.Y;
}
/* clip top */
if (py + height >= ctx->Scissor.Y + ctx->Scissor.Height) {
height -= (py + height - (ctx->Scissor.Y + ctx->Scissor.Height));
}
if (width <= 0 || height <= 0)
return GL_TRUE; /* totally scissored away */
}
else {
finalUnpack = unpack;
}
/* compute pixel value */
{
GLint r = (GLint) (ctx->Current.RasterColor[0] * 255.0f);
GLint g = (GLint) (ctx->Current.RasterColor[1] * 255.0f);
GLint b = (GLint) (ctx->Current.RasterColor[2] * 255.0f);
/*GLint a = (GLint)(ctx->Current.RasterColor[3]*255.0f);*/
if (fxMesa->bgrOrder)
color = (FxU16)
( ((FxU16)0xf8 & b) << (11-3)) |
( ((FxU16)0xfc & g) << (5-3+1)) |
( ((FxU16)0xf8 & r) >> 3);
else
color = (FxU16)
( ((FxU16)0xf8 & r) << (11-3)) |
( ((FxU16)0xfc & g) << (5-3+1)) |
( ((FxU16)0xf8 & b) >> 3);
}
info.size = sizeof(info);
if (!FX_grLfbLock(GR_LFB_WRITE_ONLY,
fxMesa->currentFB,
GR_LFBWRITEMODE_565,
GR_ORIGIN_UPPER_LEFT,
FXFALSE,
&info)) {
#ifndef FX_SILENT
fprintf(stderr,"fx Driver: error locking the linear frame buffer\n");
#endif
return GL_TRUE;
}
#ifdef XF86DRI
#define INSIDE(c, x, y) inClipRects((c), (x), (y))
#else
#define INSIDE(c, x, y) (1)
#endif
{
const GLint winX = fxMesa->x_offset;
const GLint winY = fxMesa->y_offset + fxMesa->height - 1;
/* The dest stride depends on the hardware and whether we're drawing
* to the front or back buffer. This compile-time test seems to do
* the job for now.
*/
#ifdef XF86DRI
const GLint dstStride = (fxMesa->glCtx->Color.DrawBuffer == GL_FRONT)
? (fxMesa->screen_width) : (info.strideInBytes / 2);
#else
const GLint dstStride = info.strideInBytes / 2; /* stride in GLushorts */
#endif
GLint row;
/* compute dest address of bottom-left pixel in bitmap */
GLushort *dst = (GLushort *) info.lfbPtr
+ (winY - py) * dstStride
+ (winX + px);
for (row = 0; row < height; row++) {
const GLubyte *src = (const GLubyte *) gl_pixel_addr_in_image( finalUnpack,
bitmap, width, height, GL_COLOR_INDEX, GL_BITMAP, 0, row, 0 );
if (finalUnpack->LsbFirst) {
/* least significan bit first */
GLubyte mask = 1U << (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col=0; col<width; col++) {
if (*src & mask) {
if (INSIDE(fxMesa, winX + px + col, winY - py - row))
dst[col] = color;
}
if (mask == 128U) {
src++;
mask = 1U;
}
else {
mask = mask << 1;
}
}
if (mask != 1)
src++;
}
else {
/* most significan bit first */
GLubyte mask = 128U >> (finalUnpack->SkipPixels & 0x7);
GLint col;
for (col=0; col<width; col++) {
if (*src & mask) {
if (INSIDE(fxMesa, winX + px + col, winY - py - row))
dst[col] = color;
}
if (mask == 1U) {
src++;
mask = 128U;
}
else {
mask = mask >> 1;
}
}
if (mask != 128)
src++;
}
dst -= dstStride;
}
}
#undef INSIDE
FX_grLfbUnlock(GR_LFB_WRITE_ONLY,fxMesa->currentFB);
return GL_TRUE;
}
static void fxDDFinish(GLcontext *ctx)
{
FX_grFlush();
}
static GLint fxDDGetParameteri(const GLcontext *ctx, GLint param)
{
switch(param) {
case DD_HAVE_HARDWARE_FOG:
return 1;
default:
fprintf(stderr,"fx Driver: internal error in fxDDGetParameteri(): %x\n", (int) param);
fxCloseHardware();
exit(-1);
return 0;
}
}
void fxDDSetNearFar(GLcontext *ctx, GLfloat n, GLfloat f)
{
FX_CONTEXT(ctx)->new_state |= FX_NEW_FOG;
ctx->Driver.RenderStart = fxSetupFXUnits;
}
/* KW: Put the word Mesa in the render string because quakeworld
* checks for this rather than doing a glGet(GL_MAX_TEXTURE_SIZE).
* Why?
*/
static const GLubyte *fxDDGetString(GLcontext *ctx, GLenum name)
{
#if defined(GLX_DIRECT_RENDERING)
/* Building for DRI driver */
switch (name) {
case GL_RENDERER:
{
static char buffer[100];
char hardware[100];
strcpy(hardware, grGetString(GR_HARDWARE));
if (strcmp(hardware, "Voodoo3 (tm)") == 0)
strcpy(hardware, "Voodoo3");
else if (strcmp(hardware, "Voodoo Banshee (tm)") == 0)
strcpy(hardware, "VoodooBanshee");
else {
/* unexpected result: replace spaces with hyphens */
int i;
for (i = 0; hardware[i]; i++) {
if (hardware[i] == ' ' || hardware[i] == '\t')
hardware[i] = '-';
}
}
/* now make the GL_RENDERER string */
sprintf(buffer, "Mesa DRI %s 20000224", hardware);
return buffer;
}
case GL_VENDOR:
return "Precision Insight, Inc.";
default:
return NULL;
}
#else
/* Building for Voodoo1/2 stand-alone Mesa */
switch (name) {
case GL_RENDERER:
{
static char buf[80];
if (glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_VOODOO) {
GrVoodooConfig_t *vc =
&glbHWConfig.SSTs[glbCurrentBoard].sstBoard.VoodooConfig;
sprintf(buf,
"Mesa Glide v0.30 Voodoo_Graphics %d "
"CARD/%d FB/%d TM/%d TMU/%s",
glbCurrentBoard,
(vc->sliDetect ? (vc->fbRam*2) : vc->fbRam),
(vc->tmuConfig[GR_TMU0].tmuRam +
((vc->nTexelfx>1) ? vc->tmuConfig[GR_TMU1].tmuRam : 0)),
vc->nTexelfx,
(vc->sliDetect ? "SLI" : "NOSLI"));
}
else if (glbHWConfig.SSTs[glbCurrentBoard].type==GR_SSTTYPE_SST96) {
GrSst96Config_t *sc =
&glbHWConfig.SSTs[glbCurrentBoard].sstBoard.SST96Config;
sprintf(buf,
"Glide v0.30 Voodoo_Rush %d "
"CARD/%d FB/%d TM/%d TMU/NOSLI",
glbCurrentBoard,
sc->fbRam,
sc->tmuConfig.tmuRam,
sc->nTexelfx);
}
else {
strcpy(buf, "Glide v0.30 UNKNOWN");
}
return (GLubyte *) buf;
}
default:
return NULL;
}
#endif
}
int fxDDInitFxMesaContext( fxMesaContext fxMesa )
{
FX_setupGrVertexLayout();
if (getenv("FX_EMULATE_SINGLE_TMU"))
fxMesa->haveTwoTMUs = GL_FALSE;
fxMesa->emulateTwoTMUs = fxMesa->haveTwoTMUs;
if (!getenv("FX_DONT_FAKE_MULTITEX"))
fxMesa->emulateTwoTMUs = GL_TRUE;
if(getenv("FX_GLIDE_SWAPINTERVAL"))
fxMesa->swapInterval=atoi(getenv("FX_GLIDE_SWAPINTERVAL"));
else
fxMesa->swapInterval=1;
if(getenv("MESA_FX_SWAP_PENDING"))
fxMesa->maxPendingSwapBuffers=atoi(getenv("MESA_FX_SWAP_PENDING"));
else
fxMesa->maxPendingSwapBuffers=2;
if(getenv("MESA_FX_INFO"))
fxMesa->verbose=GL_TRUE;
else
fxMesa->verbose=GL_FALSE;
fxMesa->color=0xffffffff;
fxMesa->clearC=0;
fxMesa->clearA=0;
fxMesa->stats.swapBuffer=0;
fxMesa->stats.reqTexUpload=0;
fxMesa->stats.texUpload=0;
fxMesa->stats.memTexUpload=0;
fxMesa->tmuSrc=FX_TMU_NONE;
fxMesa->lastUnitsMode=FX_UM_NONE;
fxTMInit(fxMesa);
/* FX units setup */
fxMesa->unitsState.alphaTestEnabled=GL_FALSE;
fxMesa->unitsState.alphaTestFunc=GR_CMP_ALWAYS;
fxMesa->unitsState.alphaTestRefValue=0;
fxMesa->unitsState.blendEnabled=GL_FALSE;
fxMesa->unitsState.blendSrcFuncRGB=GR_BLEND_ONE;
fxMesa->unitsState.blendDstFuncRGB=GR_BLEND_ZERO;
fxMesa->unitsState.blendSrcFuncAlpha=GR_BLEND_ONE;
fxMesa->unitsState.blendDstFuncAlpha=GR_BLEND_ZERO;
fxMesa->unitsState.depthTestEnabled =GL_FALSE;
fxMesa->unitsState.depthMask =GL_TRUE;
fxMesa->unitsState.depthTestFunc =GR_CMP_LESS;
FX_grColorMask(FXTRUE, fxMesa->haveAlphaBuffer ? FXTRUE : FXFALSE);
if(fxMesa->haveDoubleBuffer) {
fxMesa->currentFB=GR_BUFFER_BACKBUFFER;
FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
} else {
fxMesa->currentFB=GR_BUFFER_FRONTBUFFER;
FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
}
fxMesa->state = NULL;
fxMesa->fogTable = NULL;
fxMesa->state = malloc(FX_grGetInteger(FX_GLIDE_STATE_SIZE));
fxMesa->fogTable = malloc(FX_grGetInteger(FX_FOG_TABLE_ENTRIES)*sizeof(GrFog_t));
if (!fxMesa->state || !fxMesa->fogTable) {
if (fxMesa->state) free(fxMesa->state);
if (fxMesa->fogTable) free(fxMesa->fogTable);
return 0;
}
if(fxMesa->haveZBuffer)
FX_grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
#if (!FXMESA_USE_ARGB)
FX_grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); /* Not every Glide has this */
#endif
fxMesa->glCtx->Const.MaxTextureLevels=9;
fxMesa->glCtx->Const.MaxTextureSize=256;
fxMesa->glCtx->Const.MaxTextureUnits=fxMesa->emulateTwoTMUs ? 2 : 1;
fxMesa->glCtx->NewState|=NEW_DRVSTATE1;
fxMesa->new_state = NEW_ALL;
fxDDSetupInit();
fxDDCvaInit();
fxDDClipInit();
fxDDTrifuncInit();
fxDDFastPathInit();
fxSetupDDPointers(fxMesa->glCtx);
fxDDRenderInit(fxMesa->glCtx);
fxDDInitExtensions(fxMesa->glCtx);
fxDDSetNearFar(fxMesa->glCtx,1.0,100.0);
FX_grGlideGetState((GrState*)fxMesa->state);
/* XXX Fix me: callback not registered when main VB is created.
*/
if (fxMesa->glCtx->VB)
fxDDRegisterVB( fxMesa->glCtx->VB );
/* XXX Fix me too: need to have the 'struct dd' prepared prior to
* creating the context... The below is broken if you try to insert
* new stages.
*/
if (fxMesa->glCtx->NrPipelineStages)
fxMesa->glCtx->NrPipelineStages = fxDDRegisterPipelineStages(
fxMesa->glCtx->PipelineStage,
fxMesa->glCtx->PipelineStage,
fxMesa->glCtx->NrPipelineStages);
/* Run the config file */
gl_context_initialize( fxMesa->glCtx );
return 1;
}
#if 0
/* Example extension function */
static void fxFooBarEXT(GLint i)
{
printf("You called glFooBarEXT(%d)\n", i);
}
#endif
void fxDDInitExtensions( GLcontext *ctx )
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
gl_extensions_disable(ctx, "GL_EXT_blend_logic_op");
gl_extensions_disable(ctx, "GL_EXT_blend_minmax");
gl_extensions_disable(ctx, "GL_EXT_blend_subtract");
gl_extensions_disable(ctx, "GL_EXT_blend_color");
gl_extensions_disable(ctx, "GL_EXT_paletted_texture");
gl_extensions_add(ctx, DEFAULT_ON, "3DFX_set_global_palette", 0);
gl_extensions_add(ctx, DEFAULT_ON, "GL_FXMESA_global_texture_lod_bias", 0);
if (!fxMesa->haveTwoTMUs)
gl_extensions_disable(ctx, "GL_EXT_texture_env_add");
if (!fxMesa->emulateTwoTMUs)
gl_extensions_disable(ctx, "GL_ARB_multitexture");
/* Example of hooking in an extension function.
* For DRI-based drivers, also see __driRegisterExtensions in the
* tdfx_xmesa.c file.
*/
#if 0
{
void **dispatchTable = (void **) ctx->Exec;
const int _gloffset_FooBarEXT = 555; /* just an example number! */
const int tabSize = _glapi_get_dispatch_table_size();
assert(_gloffset_FooBarEXT < tabSize);
dispatchTable[_gloffset_FooBarEXT] = (void *) fxFooBarEXT;
/* XXX You would also need to hook into the display list dispatch
* table. Really, the implementation of extensions might as well
* be in the core of Mesa since core Mesa and the device driver
* is one big shared lib.
*/
}
#endif
}
/************************************************************************/
/************************************************************************/
/************************************************************************/
/* Check if the hardware supports the current context
*
* Performs similar work to fxDDChooseRenderState() - should be merged.
*/
static GLboolean fxIsInHardware(GLcontext *ctx)
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
if (!ctx->Hint.AllowDrawMem)
return GL_TRUE; /* you'll take it and like it */
if((ctx->RasterMask & STENCIL_BIT) ||
((ctx->Color.BlendEnabled) && (ctx->Color.BlendEquation!=GL_FUNC_ADD_EXT)) ||
((ctx->Color.ColorLogicOpEnabled) && (ctx->Color.LogicOp!=GL_COPY)) ||
(ctx->Light.Model.ColorControl==GL_SEPARATE_SPECULAR_COLOR) ||
(!((ctx->Color.ColorMask[RCOMP]==ctx->Color.ColorMask[GCOMP]) &&
(ctx->Color.ColorMask[GCOMP]==ctx->Color.ColorMask[BCOMP]) &&
(ctx->Color.ColorMask[ACOMP]==ctx->Color.ColorMask[ACOMP])))
)
{
return GL_FALSE;
}
/* Unsupported texture/multitexture cases */
if(fxMesa->emulateTwoTMUs) {
if((ctx->Enabled & (TEXTURE0_3D | TEXTURE1_3D)) ||
/* Not very well written ... */
((ctx->Enabled & (TEXTURE0_1D | TEXTURE1_1D)) &&
((ctx->Enabled & (TEXTURE0_2D | TEXTURE1_2D))!=(TEXTURE0_2D | TEXTURE1_2D)))
) {
return GL_FALSE;
}
if((ctx->Texture.ReallyEnabled & TEXTURE0_2D) &&
(ctx->Texture.Unit[0].EnvMode==GL_BLEND)) {
return GL_FALSE;
}
if((ctx->Texture.ReallyEnabled & TEXTURE1_2D) &&
(ctx->Texture.Unit[1].EnvMode==GL_BLEND)) {
return GL_FALSE;
}
if (MESA_VERBOSE & (VERBOSE_DRIVER|VERBOSE_TEXTURE))
fprintf(stderr, "fxMesa: fxIsInHardware, envmode is %s/%s\n",
gl_lookup_enum_by_nr(ctx->Texture.Unit[0].EnvMode),
gl_lookup_enum_by_nr(ctx->Texture.Unit[1].EnvMode));
/* KW: This was wrong (I think) and I changed it... which doesn't mean
* it is now correct...
*/
if((ctx->Enabled & (TEXTURE0_1D | TEXTURE0_2D | TEXTURE0_3D)) &&
(ctx->Enabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D)))
{
/* Can't use multipass to blend a multitextured triangle - fall
* back to software.
*/
if (!fxMesa->haveTwoTMUs && ctx->Color.BlendEnabled) {
return GL_FALSE;
}
if ((ctx->Texture.Unit[0].EnvMode!=ctx->Texture.Unit[1].EnvMode) &&
(ctx->Texture.Unit[0].EnvMode!=GL_MODULATE) &&
(ctx->Texture.Unit[0].EnvMode!=GL_REPLACE)) /* q2, seems ok... */
{
if (MESA_VERBOSE&VERBOSE_DRIVER)
fprintf(stderr, "fxMesa: unsupported multitex env mode\n");
return GL_FALSE;
}
}
} else {
if((ctx->Enabled & (TEXTURE1_1D | TEXTURE1_2D | TEXTURE1_3D)) ||
/* Not very well written ... */
((ctx->Enabled & TEXTURE0_1D) &&
(!(ctx->Enabled & TEXTURE0_2D)))
) {
return GL_FALSE;
}
if((ctx->Texture.ReallyEnabled & TEXTURE0_2D) &&
(ctx->Texture.Unit[0].EnvMode==GL_BLEND)) {
return GL_FALSE;
}
}
return GL_TRUE;
}
#define INTERESTED (~(NEW_MODELVIEW|NEW_PROJECTION|NEW_PROJECTION|NEW_TEXTURE_MATRIX|NEW_USER_CLIP|NEW_CLIENT_STATE|NEW_TEXTURE_ENABLE))
static void fxDDUpdateDDPointers(GLcontext *ctx)
{
fxMesaContext fxMesa=(fxMesaContext)ctx->DriverCtx;
GLuint new_state = ctx->NewState;
if (MESA_VERBOSE&(VERBOSE_DRIVER|VERBOSE_STATE))
fprintf(stderr,"fxmesa: fxDDUpdateDDPointers(...)\n");
if (new_state & (NEW_RASTER_OPS|NEW_TEXTURING))
fxMesa->is_in_hardware = fxIsInHardware(ctx);
if (fxMesa->is_in_hardware) {
if (fxMesa->new_state)
fxSetupFXUnits(ctx);
if(new_state & INTERESTED) {
fxDDChooseRenderState( ctx );
fxMesa->RenderVBTables=fxDDChooseRenderVBTables(ctx);
fxMesa->RenderVBClippedTab=fxMesa->RenderVBTables[0];
fxMesa->RenderVBCulledTab=fxMesa->RenderVBTables[1];
fxMesa->RenderVBRawTab=fxMesa->RenderVBTables[2];
ctx->Driver.RasterSetup=fxDDChooseSetupFunction(ctx);
}
ctx->Driver.PointsFunc=fxMesa->PointsFunc;
ctx->Driver.LineFunc=fxMesa->LineFunc;
ctx->Driver.TriangleFunc=fxMesa->TriangleFunc;
ctx->Driver.QuadFunc=fxMesa->QuadFunc;
} else {
fxMesa->render_index = FX_FALLBACK;
}
}
static void fxDDReducedPrimitiveChange(GLcontext *ctx, GLenum prim)
{
if (ctx->Polygon.CullFlag) {
if (ctx->PB->primitive != GL_POLYGON) { /* Lines or Points */
FX_grCullMode(GR_CULL_DISABLE);
FX_CONTEXT(ctx)->cullMode=GR_CULL_DISABLE;
}
}
}
void fxSetupDDPointers(GLcontext *ctx)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
fprintf(stderr,"fxmesa: fxSetupDDPointers()\n");
}
ctx->Driver.UpdateState=fxDDUpdateDDPointers;
ctx->Driver.WriteDepthSpan=fxDDWriteDepthSpan;
ctx->Driver.WriteDepthPixels=fxDDWriteDepthPixels;
ctx->Driver.ReadDepthSpan=fxDDReadDepthSpan;
ctx->Driver.ReadDepthPixels=fxDDReadDepthPixels;
ctx->Driver.GetString=fxDDGetString;
ctx->Driver.Dither=fxDDDither;
ctx->Driver.NearFar=fxDDSetNearFar;
ctx->Driver.GetParameteri=fxDDGetParameteri;
ctx->Driver.ClearIndex=NULL;
ctx->Driver.ClearColor=fxDDClearColor;
ctx->Driver.Clear=fxDDClear;
ctx->Driver.Index=NULL;
ctx->Driver.Color=fxDDSetColor;
ctx->Driver.SetDrawBuffer=fxDDSetDrawBuffer;
ctx->Driver.SetReadBuffer=fxDDSetReadBuffer;
ctx->Driver.GetBufferSize=fxDDBufferSize;
ctx->Driver.Bitmap=fxDDDrawBitMap;
ctx->Driver.DrawPixels=NULL;
ctx->Driver.Finish=fxDDFinish;
ctx->Driver.Flush=NULL;
ctx->Driver.RenderStart=NULL;
ctx->Driver.RenderFinish=NULL;
ctx->Driver.TexEnv=fxDDTexEnv;
ctx->Driver.TexImage=fxDDTexImg;
ctx->Driver.TexSubImage=fxDDTexSubImg;
ctx->Driver.TexParameter=fxDDTexParam;
ctx->Driver.BindTexture=fxDDTexBind;
ctx->Driver.DeleteTexture=fxDDTexDel;
ctx->Driver.UpdateTexturePalette=fxDDTexPalette;
ctx->Driver.UseGlobalTexturePalette=fxDDTexUseGlbPalette;
ctx->Driver.RectFunc=NULL;
ctx->Driver.AlphaFunc=fxDDAlphaFunc;
ctx->Driver.BlendFunc=fxDDBlendFunc;
ctx->Driver.DepthFunc=fxDDDepthFunc;
ctx->Driver.DepthMask=fxDDDepthMask;
ctx->Driver.ColorMask=fxDDColorMask;
ctx->Driver.Fogfv=fxDDFogfv;
ctx->Driver.Scissor=fxDDScissor;
ctx->Driver.FrontFace=fxDDFrontFace;
ctx->Driver.CullFace=fxDDCullFace;
ctx->Driver.ShadeModel=fxDDShadeModel;
ctx->Driver.Enable=fxDDEnable;
ctx->Driver.ReducedPrimitiveChange=fxDDReducedPrimitiveChange;
ctx->Driver.RegisterVB=fxDDRegisterVB;
ctx->Driver.UnregisterVB=fxDDUnregisterVB;
ctx->Driver.RegisterPipelineStages = fxDDRegisterPipelineStages;
ctx->Driver.OptimizeImmediatePipeline = 0; /* nothing done yet */
ctx->Driver.OptimizePrecalcPipeline = 0;
/* if (getenv("MESA_USE_FAST") || getenv("FX_USE_FAST")) */
/* ctx->Driver.OptimizePrecalcPipeline = fxDDOptimizePrecalcPipeline; */
if (!getenv("FX_NO_FAST"))
ctx->Driver.BuildPrecalcPipeline = fxDDBuildPrecalcPipeline;
ctx->Driver.TriangleCaps = DD_TRI_CULL|DD_TRI_OFFSET|DD_TRI_LIGHT_TWOSIDE;
fxSetupDDSpanPointers(ctx);
FX_CONTEXT(ctx)->render_index = 1; /* force an update */
fxDDUpdateDDPointers(ctx);
}
#else
/*
* Need this to provide at least one external definition.
*/
int gl_fx_dummy_function_dd(void)
{
return 0;
}
#endif /* FX */