summaryrefslogtreecommitdiffstats
path: root/src/mesa/drivers/glide/fxdd.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/drivers/glide/fxdd.c')
-rw-r--r--src/mesa/drivers/glide/fxdd.c248
1 files changed, 171 insertions, 77 deletions
diff --git a/src/mesa/drivers/glide/fxdd.c b/src/mesa/drivers/glide/fxdd.c
index 3580971ae81..cbe63695fa2 100644
--- a/src/mesa/drivers/glide/fxdd.c
+++ b/src/mesa/drivers/glide/fxdd.c
@@ -1,28 +1,51 @@
-/* -*- mode: C; tab-width:8; -*-
-
- fxdd.c - 3Dfx VooDoo Mesa device driver functions
-*/
+/* -*- mode: C; tab-width:8; c-basic-offset:2 -*- */
/*
- * This library is free software; you can redistribute it and/or
- * modify it under the terms of the GNU Library General Public
- * License as published by the Free Software Foundation; either
- * version 2 of the License, or (at your option) any later version.
+ * Mesa 3-D graphics library
+ * Version: 3.1
+ *
+ * Copyright (C) 1999 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.
+ *
*
- * This library is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
- * Library General Public License for more details.
+ * Original Mesa / 3Dfx device driver (C) 1999 David Bucciarelli, by the
+ * terms stated above.
*
- * You should have received a copy of the GNU Library General Public
- * License along with this library; if not, write to the Free
- * Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
+ * Thank you for your contribution, David!
*
- * See the file fxapi.c for more informations about authors
+ * 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 <[email protected]>
+ * Keith Whitwell <[email protected]>
+ *
+ * See fxapi.h for more revision/author details.
*/
+/* fxdd.c - 3Dfx VooDoo Mesa device driver functions */
+
+
#ifdef HAVE_CONFIG_H
#include "conf.h"
#endif
@@ -34,6 +57,44 @@
#include "enums.h"
#include "extensions.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(GLboolean bgrOrder)
+{
+ GLuint pixel;
+ 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 *****/
/**********************************************************************/
@@ -45,10 +106,11 @@ void fxDDDither(GLcontext *ctx, GLboolean enable)
fprintf(stderr,"fxmesa: fxDDDither()\n");
}
- if(enable)
- grDitherMode(GR_DITHER_4x4);
- else
- grDitherMode(GR_DITHER_DISABLE);
+ if (enable) {
+ FX_grDitherMode(GR_DITHER_4x4);
+ } else {
+ FX_grDitherMode(GR_DITHER_DISABLE);
+ }
}
@@ -121,14 +183,14 @@ static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
/* clear color and depth buffer */
if (ctx->Color.DrawDestMask & BACK_LEFT_BIT) {
- grRenderBuffer(GR_BUFFER_BACKBUFFER);
- grBufferClear(fxMesa->clearC, fxMesa->clearA,
- (FxU16)(ctx->Depth.Clear*0xffff));
+ FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
+ FX_grBufferClear(fxMesa->clearC, fxMesa->clearA,
+ (FxU16)(ctx->Depth.Clear*0xffff));
}
if (ctx->Color.DrawDestMask & FRONT_LEFT_BIT) {
- grRenderBuffer(GR_BUFFER_FRONTBUFFER);
- grBufferClear(fxMesa->clearC, fxMesa->clearA,
- (FxU16)(ctx->Depth.Clear*0xffff));
+ FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
+ FX_grBufferClear(fxMesa->clearC, fxMesa->clearA,
+ (FxU16)(ctx->Depth.Clear*0xffff));
}
newmask=mask & (~(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT));
@@ -137,19 +199,20 @@ static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
/* clear color buffer */
if(ctx->Color.ColorMask) {
- grDepthMask(FXFALSE);
+ FX_grDepthMask(FXFALSE);
if (ctx->Color.DrawDestMask & BACK_LEFT_BIT) {
- grRenderBuffer(GR_BUFFER_BACKBUFFER);
- grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
+ FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
+ FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
}
if (ctx->Color.DrawDestMask & FRONT_LEFT_BIT) {
- grRenderBuffer(GR_BUFFER_FRONTBUFFER);
- grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
+ FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
+ FX_grBufferClear(fxMesa->clearC, fxMesa->clearA, 0);
}
- if(ctx->Depth.Mask)
- grDepthMask(FXTRUE);
+ if(ctx->Depth.Mask) {
+ FX_grDepthMask(FXTRUE);
+ }
}
newmask=mask & (~(GL_COLOR_BUFFER_BIT));
@@ -158,14 +221,14 @@ static GLbitfield fxDDClear(GLcontext *ctx, GLbitfield mask, GLboolean all,
/* clear depth buffer */
if(ctx->Depth.Mask) {
- grColorMask(FXFALSE,FXFALSE);
- grBufferClear(fxMesa->clearC, fxMesa->clearA,
- (FxU16)(ctx->Depth.Clear*0xffff));
-
- grColorMask(ctx->Color.ColorMask[RCOMP] ||
- ctx->Color.ColorMask[GCOMP] ||
- ctx->Color.ColorMask[BCOMP],
- ctx->Color.ColorMask[ACOMP] && fxMesa->haveAlphaBuffer);
+ FX_grColorMask(FXFALSE,FXFALSE);
+ FX_grBufferClear(fxMesa->clearC, fxMesa->clearA,
+ (FxU16)(ctx->Depth.Clear*0xffff));
+
+ FX_grColorMask(ctx->Color.ColorMask[RCOMP] ||
+ ctx->Color.ColorMask[GCOMP] ||
+ ctx->Color.ColorMask[BCOMP],
+ ctx->Color.ColorMask[ACOMP] && fxMesa->haveAlphaBuffer);
}
newmask=mask & (~(GL_DEPTH_BUFFER_BIT));
@@ -190,12 +253,12 @@ static GLboolean fxDDSetBuffer(GLcontext *ctx, GLenum mode )
if (mode == GL_FRONT_LEFT) {
fxMesa->currentFB = GR_BUFFER_FRONTBUFFER;
- grRenderBuffer(fxMesa->currentFB);
+ FX_grRenderBuffer(fxMesa->currentFB);
return GL_TRUE;
}
else if (mode == GL_BACK_LEFT) {
fxMesa->currentFB = GR_BUFFER_BACKBUFFER;
- grRenderBuffer(fxMesa->currentFB);
+ FX_grRenderBuffer(fxMesa->currentFB);
return GL_TRUE;
}
else {
@@ -204,6 +267,22 @@ static GLboolean fxDDSetBuffer(GLcontext *ctx, GLenum mode )
}
+#ifdef XF86DRI
+static GLboolean inClipRects(fxMesaContext fxMesa, int px, int py)
+{
+ int i;
+
+ py=fxMesa->height+fxMesa->y_offset-py;
+ 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,
@@ -241,10 +320,16 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
ymax=fxMesa->height;
}
+ xmin+=fxMesa->x_offset;
+ xmax+=fxMesa->x_offset;
-#define ISCLIPPED(rx) ( ((rx)<xmin) || ((rx)>=xmax) )
+#ifdef XF86DRI
+#define ISCLIPPED(rx, ry) ( ((rx)<xmin) || ((rx)>=xmax) || !inClipRects(fxMesa, rx, ry))
+#else
+#define ISCLIPPED(rx, ry) ( ((rx)<xmin) || ((rx)>=xmax) )
+#endif
#define DRAWBIT(i) { \
- if(!ISCLIPPED(x+px)) \
+ if(!ISCLIPPED(x+px, y)) \
if( (*pb) & (1<<(i)) ) \
(*p)=color; \
p++; \
@@ -258,7 +343,7 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
scrwidth=fxMesa->width;
scrheight=fxMesa->height;
- if((px>=scrwidth) || (px+width<=0) || (py>=scrheight) || (py+height<=0))
+ if ((px>=scrwidth) || (px+width<=0) || (py>=scrheight) || (py+height<=0))
return GL_TRUE;
pb=bitmap;
@@ -269,16 +354,16 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
py=0;
}
- if(py+height>=scrheight)
+ if (py+height>=scrheight)
height-=(py+height)-scrheight;
info.size=sizeof(info);
- if(!grLfbLock(GR_LFB_WRITE_ONLY,
- fxMesa->currentFB,
- GR_LFBWRITEMODE_565,
- GR_ORIGIN_UPPER_LEFT,
- FXFALSE,
- &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
@@ -298,13 +383,13 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
/* This code is a bit slow... */
- for(y=py;y<(py+height);y++) {
+ if (py>ymin) ymin=py;
+ if (py+height<ymax) ymax=py+height;
- if (y>=ymax)
- break;
+ px+=fxMesa->x_offset;
+ scrheight=fxMesa->height+fxMesa->y_offset;
- if (y<=ymin)
- continue;
+ for(y=ymin; y<ymax; y++) {
p=((FxU16 *)info.lfbPtr)+px+((scrheight-y)*stride);
@@ -315,7 +400,7 @@ static GLboolean fxDDDrawBitMap(GLcontext *ctx, GLint px, GLint py,
}
}
- grLfbUnlock(GR_LFB_WRITE_ONLY,fxMesa->currentFB);
+ FX_grLfbUnlock(GR_LFB_WRITE_ONLY,fxMesa->currentFB);
#undef ISCLIPPED
#undef DRAWBIT
@@ -347,8 +432,6 @@ void fxDDSetNearFar(GLcontext *ctx, GLfloat n, GLfloat f)
{
FX_CONTEXT(ctx)->new_state |= FX_NEW_FOG;
ctx->Driver.RenderStart = fxSetupFXUnits;
-
- FX_CONTEXT(ctx)->wscale = fabs(f)/65535.0f;
}
/* KW: Put the word Mesa in the render string because quakeworld
@@ -459,13 +542,13 @@ int fxDDInitFxMesaContext( fxMesaContext fxMesa )
fxMesa->unitsState.depthMask =GL_TRUE;
fxMesa->unitsState.depthTestFunc =GR_CMP_LESS;
- grColorMask(FXTRUE, fxMesa->haveAlphaBuffer ? FXTRUE : FXFALSE);
+ FX_grColorMask(FXTRUE, fxMesa->haveAlphaBuffer ? FXTRUE : FXFALSE);
if(fxMesa->haveDoubleBuffer) {
fxMesa->currentFB=GR_BUFFER_BACKBUFFER;
- grRenderBuffer(GR_BUFFER_BACKBUFFER);
+ FX_grRenderBuffer(GR_BUFFER_BACKBUFFER);
} else {
fxMesa->currentFB=GR_BUFFER_FRONTBUFFER;
- grRenderBuffer(GR_BUFFER_FRONTBUFFER);
+ FX_grRenderBuffer(GR_BUFFER_FRONTBUFFER);
}
fxMesa->state = NULL;
@@ -481,10 +564,10 @@ int fxDDInitFxMesaContext( fxMesaContext fxMesa )
}
if(fxMesa->haveZBuffer)
- grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
+ FX_grDepthBufferMode(GR_DEPTHBUFFER_ZBUFFER);
#if (!FXMESA_USE_ARGB)
- grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); /* Not every Glide has this */
+ FX_grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); /* Not every Glide has this */
#endif
fxMesa->glCtx->Const.MaxTextureLevels=9;
@@ -505,7 +588,7 @@ int fxDDInitFxMesaContext( fxMesaContext fxMesa )
fxDDSetNearFar(fxMesa->glCtx,1.0,100.0);
- grGlideGetState((GrState*)fxMesa->state);
+ FX_grGlideGetState((GrState*)fxMesa->state);
/* XXX Fix me: callback not registered when main VB is created.
*/
@@ -546,6 +629,12 @@ void fxDDInitExtensions( GLcontext *ctx )
gl_extensions_disable( ctx, "GL_ARB_multitexture" );
}
+/*
+ This driver may need to move the drawing operations to a different sub
+ window. This modifies the viewport command to add our X,Y offset to all
+ drawn objects that go through the viewport transformation.
+*/
+
/************************************************************************/
/************************************************************************/
/************************************************************************/
@@ -591,16 +680,19 @@ static GLboolean fxIsInHardware(GLcontext *ctx)
/* 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))
+ (ctx->Texture.Unit[0].EnvMode==GL_BLEND)) {
return GL_FALSE;
+ }
if((ctx->Texture.ReallyEnabled & TEXTURE1_2D) &&
- (ctx->Texture.Unit[1].EnvMode==GL_BLEND))
+ (ctx->Texture.Unit[1].EnvMode==GL_BLEND)) {
return GL_FALSE;
+ }
if (MESA_VERBOSE & (VERBOSE_DRIVER|VERBOSE_TEXTURE))
@@ -617,8 +709,9 @@ static GLboolean fxIsInHardware(GLcontext *ctx)
/* Can't use multipass to blend a multitextured triangle - fall
* back to software.
*/
- if (!fxMesa->haveTwoTMUs && ctx->Color.BlendEnabled)
+ 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) &&
@@ -626,7 +719,6 @@ static GLboolean fxIsInHardware(GLcontext *ctx)
{
if (MESA_VERBOSE&VERBOSE_DRIVER)
fprintf(stderr, "fxMesa: unsupported multitex env mode\n");
-
return GL_FALSE;
}
}
@@ -635,13 +727,15 @@ static GLboolean fxIsInHardware(GLcontext *ctx)
/* 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))
+ (ctx->Texture.Unit[0].EnvMode==GL_BLEND)) {
return GL_FALSE;
+ }
}
return GL_TRUE;
@@ -680,11 +774,11 @@ static void fxDDUpdateDDPointers(GLcontext *ctx)
ctx->Driver.LineFunc=fxMesa->LineFunc;
ctx->Driver.TriangleFunc=fxMesa->TriangleFunc;
ctx->Driver.QuadFunc=fxMesa->QuadFunc;
- } else
+ } else {
fxMesa->render_index = FX_FALLBACK;
+ }
}
-
void fxSetupDDPointers(GLcontext *ctx)
{
if (MESA_VERBOSE&VERBOSE_DRIVER) {
@@ -748,7 +842,6 @@ void fxSetupDDPointers(GLcontext *ctx)
ctx->Driver.CullFace=fxDDCullFace;
ctx->Driver.ShadeModel=fxDDShadeModel;
ctx->Driver.Enable=fxDDEnable;
-
ctx->Driver.RegisterVB=fxDDRegisterVB;
ctx->Driver.UnregisterVB=fxDDUnregisterVB;
@@ -786,3 +879,4 @@ int gl_fx_dummy_function_dd(void)
}
#endif /* FX */
+
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-25 19:51:34 +0000