xmesa: split FX functions to separate file, part 1.

1 files changed, 257 insertions, 0 deletions

diff --git a/src/mesa/drivers/x11/xm_glide.c b/src/mesa/drivers/x11/xm_glide.c
new file mode 100644
index 0000000000..37787a7922
--- /dev/null
+++ b/src/mesa/drivers/x11/xm_glide.c
@@ -0,0 +1,257 @@
+/*
+ * Mesa 3-D graphics library
+ * Version:  6.5
+ *
+ * Copyright (C) 1999-2006  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.
+ */
+
+
+#include "glxheader.h"
+#include "xmesaP.h"
+
+#ifdef FX
+void
+FXcreateContext(XMesaVisual v, XMesaWindow w, XMesaContext c, XMesaBuffer b)
+{
+   char *fxEnvVar = _mesa_getenv("MESA_GLX_FX");
+   if (fxEnvVar) {
+     if (fxEnvVar[0]!='d') {
+       int attribs[100];
+       int numAttribs = 0;
+       int hw;
+       if (v->mesa_visual.depthBits > 0) {
+	 attribs[numAttribs++] = FXMESA_DEPTH_SIZE;
+	 attribs[numAttribs++] = v->mesa_visual.depthBits;
+       }
+       if (v->mesa_visual.doubleBufferMode) {
+	 attribs[numAttribs++] = FXMESA_DOUBLEBUFFER;
+       }
+       if (v->mesa_visual.accumRedBits > 0) {
+	 attribs[numAttribs++] = FXMESA_ACCUM_SIZE;
+	 attribs[numAttribs++] = v->mesa_visual.accumRedBits;
+       }
+       if (v->mesa_visual.stencilBits > 0) {
+         attribs[numAttribs++] = FXMESA_STENCIL_SIZE;
+         attribs[numAttribs++] = v->mesa_visual.stencilBits;
+       }
+       if (v->mesa_visual.alphaBits > 0) {
+         attribs[numAttribs++] = FXMESA_ALPHA_SIZE;
+         attribs[numAttribs++] = v->mesa_visual.alphaBits;
+       }
+       if (1) {
+         attribs[numAttribs++] = FXMESA_SHARE_CONTEXT;
+         attribs[numAttribs++] = (int) &(c->mesa);
+       }
+       attribs[numAttribs++] = FXMESA_NONE;
+
+       /* [dBorca] we should take an envvar for `fxMesaSelectCurrentBoard'!!! */
+       hw = fxMesaSelectCurrentBoard(0);
+
+       /* if these fail, there's a new bug somewhere */
+       ASSERT(b->mesa_buffer.Width > 0);
+       ASSERT(b->mesa_buffer.Height > 0);
+
+       if ((hw == GR_SSTTYPE_VOODOO) || (hw == GR_SSTTYPE_Voodoo2)) {
+         b->FXctx = fxMesaCreateBestContext(0, b->mesa_buffer.Width,
+                                            b->mesa_buffer.Height, attribs);
+         if ((v->undithered_pf!=PF_Index) && (b->backxrb->ximage)) {
+	   b->FXisHackUsable = b->FXctx ? GL_TRUE : GL_FALSE;
+	   if (b->FXctx && (fxEnvVar[0]=='w' || fxEnvVar[0]=='W')) {
+	     b->FXwindowHack = GL_TRUE;
+	     FX_grSstControl(GR_CONTROL_DEACTIVATE);
+	   }
+           else {
+	     b->FXwindowHack = GL_FALSE;
+	   }
+         }
+       }
+       else {
+         if (fxEnvVar[0]=='w' || fxEnvVar[0]=='W')
+	   b->FXctx = fxMesaCreateContext(w, GR_RESOLUTION_NONE,
+					  GR_REFRESH_75Hz, attribs);
+         else
+	   b->FXctx = fxMesaCreateBestContext(0, b->mesa_buffer.Width,
+                                              b->mesa_buffer.Height, attribs);
+         b->FXisHackUsable = GL_FALSE;
+         b->FXwindowHack = GL_FALSE;
+       }
+       /*
+       fprintf(stderr,
+               "voodoo %d, wid %d height %d hack: usable %d active %d\n",
+               hw, b->mesa_buffer.Width, b->mesa_buffer.Height,
+	       b->FXisHackUsable, b->FXwindowHack);
+       */
+     }
+   }
+   else {
+      _mesa_warning(NULL, "WARNING: This Mesa Library includes the Glide driver but\n");
+      _mesa_warning(NULL, "         you have not defined the MESA_GLX_FX env. var.\n");
+      _mesa_warning(NULL, "         (check the README.3DFX file for more information).\n\n");
+      _mesa_warning(NULL, "         you can disable this message with a 'export MESA_GLX_FX=disable'.\n");
+   }
+}
+
+
+/*
+ * Read image from VooDoo frame buffer into X/Mesa's back XImage.
+ */
+static void FXgetImage( XMesaBuffer b )
+{
+   GET_CURRENT_CONTEXT(ctx);
+   static unsigned short pixbuf[MAX_WIDTH];
+   GLuint x, y;
+   GLuint width, height;
+   XMesaContext xmesa = XMESA_CONTEXT(ctx);
+
+#ifdef XFree86Server
+   x = b->frontxrb->pixmap->x;
+   y = b->frontxrb->pixmap->y;
+   width = b->frontxrb->pixmap->width;
+   height = b->frontxrb->pixmap->height;
+   depth = b->frontxrb->pixmap->depth;
+#else
+   xmesa_get_window_size(b->display, b, &width, &height);
+   x = y = 0;
+#endif
+   if (b->mesa_buffer.Width != width || b->mesa_buffer.Height != height) {
+      b->mesa_buffer.Width = MIN2((int)width, b->FXctx->width);
+      b->mesa_buffer.Height = MIN2((int)height, b->FXctx->height);
+      if (b->mesa_buffer.Width & 1)
+         b->mesa_buffer.Width--;  /* prevent odd width */
+   }
+
+   /* [dBorca] we're always in the right GR_COLORFORMAT... aren't we? */
+   /* grLfbWriteColorFormat(GR_COLORFORMAT_ARGB); */
+   if (b->xm_visual->undithered_pf==PF_5R6G5B) {
+      /* Special case: 16bpp RGB */
+      grLfbReadRegion( GR_BUFFER_FRONTBUFFER,       /* src buffer */
+                       0, b->FXctx->height - b->mesa_buffer.Height,  /*pos*/
+                       b->mesa_buffer.Width, b->mesa_buffer.Height,  /* size */
+                       b->mesa_buffer.Width * sizeof(GLushort), /* stride */
+                       b->backxrb->ximage->data);         /* dest buffer */
+   }
+   else if (b->xm_visual->dithered_pf==PF_Dither
+	    && GET_VISUAL_DEPTH(b->xm_visual)==8) {
+      /* Special case: 8bpp RGB */
+      for (y=0;y<b->mesa_buffer.Height;y++) {
+         GLubyte *ptr = (GLubyte*) b->backxrb->ximage->data
+                        + b->backxrb->ximage->bytes_per_line * y;
+         XDITHER_SETUP(y);
+
+         /* read row from 3Dfx frame buffer */
+         grLfbReadRegion( GR_BUFFER_FRONTBUFFER,
+                          0, b->FXctx->height-(b->mesa_buffer.Height-y),
+                          b->mesa_buffer.Width, 1,
+                          0,
+                          pixbuf );
+
+         /* write to XImage back buffer */
+         for (x=0;x<b->mesa_buffer.Width;x++) {
+            GLubyte r = (pixbuf[x] & 0xf800) >> 8;
+            GLubyte g = (pixbuf[x] & 0x07e0) >> 3;
+            GLubyte b = (pixbuf[x] & 0x001f) << 3;
+            *ptr++ = XDITHER( x, r, g, b);
+         }
+      }
+   }
+   else {
+      /* General case: slow! */
+      for (y=0;y<b->mesa_buffer.Height;y++) {
+         /* read row from 3Dfx frame buffer */
+         grLfbReadRegion( GR_BUFFER_FRONTBUFFER,
+                          0, b->FXctx->height-(b->mesa_buffer.Height-y),
+                          b->mesa_buffer.Width, 1,
+                          0,
+                          pixbuf );
+
+         /* write to XImage back buffer */
+         for (x=0;x<b->mesa_buffer.Width;x++) {
+            XMesaPutPixel(b->backxrb->ximage,x,y,
+			  xmesa_color_to_pixel(ctx,
+					       (pixbuf[x] & 0xf800) >> 8,
+					       (pixbuf[x] & 0x07e0) >> 3,
+					       (pixbuf[x] & 0x001f) << 3,
+					       0xff,
+                                               b->xm_visual->undithered_pf));
+         }
+      }
+   }
+   /* grLfbWriteColorFormat(GR_COLORFORMAT_ABGR); */
+}
+
+
+GLboolean FXswapBuffers( XMesaBuffer b )
+{
+   if (b->FXctx) {
+      fxMesaSwapBuffers();
+
+      if (!b->FXwindowHack)
+         return GL_TRUE;
+
+      FXgetImage(b);
+   }
+   return GL_FALSE;
+}
+
+
+/*
+ * Switch 3Dfx support hack between window and full-screen mode.
+ */
+GLboolean XMesaSetFXmode( GLint mode )
+{
+   const char *fx = _mesa_getenv("MESA_GLX_FX");
+   if (fx && fx[0] != 'd') {
+      GET_CURRENT_CONTEXT(ctx);
+      GrHwConfiguration hw;
+      if (!FX_grSstQueryHardware(&hw)) {
+         /*fprintf(stderr, "!grSstQueryHardware\n");*/
+         return GL_FALSE;
+      }
+      if (hw.num_sst < 1) {
+         /*fprintf(stderr, "hw.num_sst < 1\n");*/
+         return GL_FALSE;
+      }
+      if (ctx) {
+         /* [dBorca] Hack alert: 
+	  * oh, this is sooo wrong: ctx above is
+	  * really an fxMesaContext, not an XMesaContext
+	  */
+         XMesaBuffer xmbuf = XMESA_BUFFER(ctx->DrawBuffer);
+         if (mode == XMESA_FX_WINDOW) {
+	    if (xmbuf->FXisHackUsable) {
+	       FX_grSstControl(GR_CONTROL_DEACTIVATE);
+	       xmbuf->FXwindowHack = GL_TRUE;
+	       return GL_TRUE;
+	    }
+	 }
+	 else if (mode == XMESA_FX_FULLSCREEN) {
+	    FX_grSstControl(GR_CONTROL_ACTIVATE);
+	    xmbuf->FXwindowHack = GL_FALSE;
+	    return GL_TRUE;
+	 }
+	 else {
+	    /* Error: Bad mode value */
+	 }
+      }
+   }
+   /*fprintf(stderr, "fallthrough\n");*/
+   return GL_FALSE;
+}
+#endif