1 files changed, 450 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/tdfx/tdfx_screen.c b/src/mesa/drivers/dri/tdfx/tdfx_screen.c
new file mode 100644
index 0000000000..26de09503a
--- /dev/null
+++ b/src/mesa/drivers/dri/tdfx/tdfx_screen.c
@@ -0,0 +1,450 @@
+/* -*- mode: c; c-basic-offset: 3 -*-
+ *
+ * Copyright 2000 VA Linux Systems Inc., Fremont, California.
+ *
+ * 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 (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 NONINFRINGEMENT.  IN NO EVENT SHALL
+ * VA LINUX SYSTEMS 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 rewrite:
+ *	Gareth Hughes <gareth@valinux.com>, 29 Sep - 1 Oct 2000
+ *
+ * Authors:
+ *	Gareth Hughes <gareth@valinux.com>
+ *
+ */
+
+#include "tdfx_dri.h"
+#include "tdfx_context.h"
+#include "tdfx_lock.h"
+#include "tdfx_span.h"
+
+#include "main/framebuffer.h"
+#include "main/renderbuffer.h"
+#include "xmlpool.h"
+
+#include "utils.h"
+
+#ifdef DEBUG_LOCKING
+char *prevLockFile = 0;
+int prevLockLine = 0;
+#endif
+
+#ifndef TDFX_DEBUG
+int TDFX_DEBUG = 0;
+#endif
+
+PUBLIC const char __driConfigOptions[] =
+DRI_CONF_BEGIN
+    DRI_CONF_SECTION_DEBUG
+        DRI_CONF_NO_RAST(false)
+    DRI_CONF_SECTION_END
+DRI_CONF_END;
+
+static const __DRIextension *tdfxExtensions[] = {
+    &driReadDrawableExtension,
+    NULL
+};
+
+static const GLuint __driNConfigOptions = 1;
+
+static GLboolean
+tdfxCreateScreen( __DRIscreen *sPriv )
+{
+   tdfxScreenPrivate *fxScreen;
+   TDFXDRIPtr fxDRIPriv = (TDFXDRIPtr) sPriv->pDevPriv;
+
+   if (sPriv->devPrivSize != sizeof(TDFXDRIRec)) {
+      fprintf(stderr,"\nERROR!  sizeof(TDFXDRIRec) does not match passed size from device driver\n");
+      return GL_FALSE;
+   }
+
+   /* Allocate the private area */
+   fxScreen = (tdfxScreenPrivate *) CALLOC( sizeof(tdfxScreenPrivate) );
+   if ( !fxScreen )
+      return GL_FALSE;
+
+   /* parse information in __driConfigOptions */
+   driParseOptionInfo (&fxScreen->optionCache,
+		       __driConfigOptions, __driNConfigOptions);
+
+   fxScreen->driScrnPriv = sPriv;
+   sPriv->private = (void *) fxScreen;
+
+   fxScreen->regs.handle	= fxDRIPriv->regs;
+   fxScreen->regs.size		= fxDRIPriv->regsSize;
+   fxScreen->deviceID		= fxDRIPriv->deviceID;
+   fxScreen->width		= fxDRIPriv->width;
+   fxScreen->height		= fxDRIPriv->height;
+   fxScreen->mem		= fxDRIPriv->mem;
+   fxScreen->cpp		= fxDRIPriv->cpp;
+   fxScreen->stride		= fxDRIPriv->stride;
+   fxScreen->fifoOffset		= fxDRIPriv->fifoOffset;
+   fxScreen->fifoSize		= fxDRIPriv->fifoSize;
+   fxScreen->fbOffset		= fxDRIPriv->fbOffset;
+   fxScreen->backOffset		= fxDRIPriv->backOffset;
+   fxScreen->depthOffset	= fxDRIPriv->depthOffset;
+   fxScreen->textureOffset	= fxDRIPriv->textureOffset;
+   fxScreen->textureSize	= fxDRIPriv->textureSize;
+   fxScreen->sarea_priv_offset	= fxDRIPriv->sarea_priv_offset;
+
+   if ( drmMap( sPriv->fd, fxScreen->regs.handle,
+		fxScreen->regs.size, &fxScreen->regs.map ) ) {
+      return GL_FALSE;
+   }
+
+   sPriv->extensions = tdfxExtensions;
+
+   return GL_TRUE;
+}
+
+
+static void
+tdfxDestroyScreen( __DRIscreen *sPriv )
+{
+   tdfxScreenPrivate *fxScreen = (tdfxScreenPrivate *) sPriv->private;
+
+   if (!fxScreen)
+      return;
+
+   drmUnmap( fxScreen->regs.map, fxScreen->regs.size );
+
+   /* free all option information */
+   driDestroyOptionInfo (&fxScreen->optionCache);
+
+   FREE( fxScreen );
+   sPriv->private = NULL;
+}
+
+
+static GLboolean
+tdfxInitDriver( __DRIscreen *sPriv )
+{
+   if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
+      fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)sPriv );
+   }
+
+   if ( !tdfxCreateScreen( sPriv ) ) {
+      tdfxDestroyScreen( sPriv );
+      return GL_FALSE;
+   }
+
+   return GL_TRUE;
+}
+
+
+static GLboolean
+tdfxCreateBuffer( __DRIscreen *driScrnPriv,
+                  __DRIdrawable *driDrawPriv,
+                  const __GLcontextModes *mesaVis,
+                  GLboolean isPixmap )
+{
+   tdfxScreenPrivate *screen = (tdfxScreenPrivate *) driScrnPriv->private;
+
+   if (isPixmap) {
+      return GL_FALSE; /* not implemented */
+   }
+   else {
+      struct gl_framebuffer *fb = _mesa_create_framebuffer(mesaVis);
+
+      {
+         driRenderbuffer *frontRb
+            = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
+                                 screen->fbOffset, screen->width, driDrawPriv);
+         tdfxSetSpanFunctions(frontRb, mesaVis);
+         _mesa_add_renderbuffer(fb, BUFFER_FRONT_LEFT, &frontRb->Base);
+      }
+
+      if (mesaVis->doubleBufferMode) {
+         driRenderbuffer *backRb
+            = driNewRenderbuffer(MESA_FORMAT_ARGB8888, NULL, screen->cpp,
+                                 screen->backOffset, screen->width,
+                                 driDrawPriv);
+         tdfxSetSpanFunctions(backRb, mesaVis);
+         _mesa_add_renderbuffer(fb, BUFFER_BACK_LEFT, &backRb->Base);
+	 backRb->backBuffer = GL_TRUE;
+      }
+
+      if (mesaVis->depthBits == 16) {
+         driRenderbuffer *depthRb
+            = driNewRenderbuffer(MESA_FORMAT_Z16, NULL, screen->cpp,
+                                 screen->depthOffset, screen->width,
+                                 driDrawPriv);
+         tdfxSetSpanFunctions(depthRb, mesaVis);
+         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
+      }
+      else if (mesaVis->depthBits == 24) {
+         driRenderbuffer *depthRb
+            = driNewRenderbuffer(MESA_FORMAT_Z24_S8, NULL, screen->cpp,
+                                 screen->depthOffset, screen->width,
+                                 driDrawPriv);
+         tdfxSetSpanFunctions(depthRb, mesaVis);
+         _mesa_add_renderbuffer(fb, BUFFER_DEPTH, &depthRb->Base);
+      }
+
+      if (mesaVis->stencilBits > 0) {
+         driRenderbuffer *stencilRb
+            = driNewRenderbuffer(MESA_FORMAT_S8, NULL, screen->cpp,
+                                 screen->depthOffset, screen->width,
+                                 driDrawPriv);
+         tdfxSetSpanFunctions(stencilRb, mesaVis);
+         _mesa_add_renderbuffer(fb, BUFFER_STENCIL, &stencilRb->Base);
+      }
+
+      _mesa_add_soft_renderbuffers(fb,
+                                   GL_FALSE, /* color */
+                                   GL_FALSE, /* depth */
+                                   GL_FALSE, /*swStencil,*/
+                                   mesaVis->accumRedBits > 0,
+                                   GL_FALSE, /* alpha */
+                                   GL_FALSE /* aux */);
+      driDrawPriv->driverPrivate = (void *) fb;
+
+      return (driDrawPriv->driverPrivate != NULL);
+   }
+}
+
+
+static void
+tdfxDestroyBuffer(__DRIdrawable *driDrawPriv)
+{
+   _mesa_reference_framebuffer((GLframebuffer **)(&(driDrawPriv->driverPrivate)), NULL);
+}
+
+
+static void
+tdfxSwapBuffers( __DRIdrawable *driDrawPriv )
+
+{
+   GET_CURRENT_CONTEXT(ctx);
+   tdfxContextPtr fxMesa = 0;
+   GLframebuffer *mesaBuffer;
+
+   if ( TDFX_DEBUG & DEBUG_VERBOSE_DRI ) {
+      fprintf( stderr, "%s( %p )\n", __FUNCTION__, (void *)driDrawPriv );
+   }
+
+   mesaBuffer = (GLframebuffer *) driDrawPriv->driverPrivate;
+   if ( !mesaBuffer->Visual.doubleBufferMode )
+      return; /* can't swap a single-buffered window */
+
+   /* If the current context's drawable matches the given drawable
+    * we have to do a glFinish (per the GLX spec).
+    */
+   if ( ctx ) {
+      __DRIdrawable *curDrawPriv;
+      fxMesa = TDFX_CONTEXT(ctx);
+      curDrawPriv = fxMesa->driContext->driDrawablePriv;
+
+      if ( curDrawPriv == driDrawPriv ) {
+	 /* swapping window bound to current context, flush first */
+	 _mesa_notifySwapBuffers( ctx );
+	 LOCK_HARDWARE( fxMesa );
+      }
+      else {
+         /* find the fxMesa context previously bound to the window */
+	 fxMesa = (tdfxContextPtr) driDrawPriv->driContextPriv->driverPrivate;
+         if (!fxMesa)
+            return;
+	 LOCK_HARDWARE( fxMesa );
+	 fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
+#ifdef DEBUG
+         printf("SwapBuf SetState 1\n");
+#endif
+	 fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
+      }
+   }
+
+#ifdef STATS
+   {
+      int stalls;
+      static int prevStalls = 0;
+
+      stalls = fxMesa->Glide.grFifoGetStalls();
+
+      fprintf( stderr, "%s:\n", __FUNCTION__ );
+      if ( stalls != prevStalls ) {
+	 fprintf( stderr, "    %d stalls occurred\n",
+		  stalls - prevStalls );
+	 prevStalls = stalls;
+      }
+      if ( fxMesa && fxMesa->texSwaps ) {
+	 fprintf( stderr, "    %d texture swaps occurred\n",
+		  fxMesa->texSwaps );
+	 fxMesa->texSwaps = 0;
+      }
+   }
+#endif
+
+   assert(fxMesa);
+
+   if (fxMesa->scissoredClipRects) {
+      /* restore clip rects without scissor box */
+      fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
+                                   driDrawPriv->w, driDrawPriv->h,
+                                   driDrawPriv->numClipRects,
+                                   driDrawPriv->pClipRects );
+   }
+
+   fxMesa->Glide.grDRIBufferSwap( fxMesa->Glide.SwapInterval );
+
+   if (fxMesa->scissoredClipRects) {
+      /* restore clip rects WITH scissor box */
+      fxMesa->Glide.grDRIPosition( driDrawPriv->x, driDrawPriv->y,
+                                   driDrawPriv->w, driDrawPriv->h,
+                                   fxMesa->numClipRects, fxMesa->pClipRects );
+   }
+
+
+#if 0
+   {
+      FxI32 result;
+      do {
+         FxI32 result;
+         fxMesa->Glide.grGet(GR_PENDING_BUFFERSWAPS, 4, &result);
+      } while ( result > fxMesa->maxPendingSwapBuffers );
+   }
+#endif
+
+   fxMesa->stats.swapBuffer++;
+
+   if (ctx) {
+      if (ctx->DriverCtx != fxMesa) {
+         fxMesa = TDFX_CONTEXT(ctx);
+	 fxMesa->Glide.grSstSelect( fxMesa->Glide.Board );
+#ifdef DEBUG
+         printf("SwapBuf SetState 2\n");
+#endif
+	 fxMesa->Glide.grGlideSetState(fxMesa->Glide.State );
+      }
+      UNLOCK_HARDWARE( fxMesa );
+   }
+}
+
+static const __DRIconfig **
+tdfxFillInModes(__DRIscreen *psp,
+		unsigned pixel_bits,
+		unsigned depth_bits,
+		unsigned stencil_bits,
+		GLboolean have_back_buffer)
+{
+	unsigned deep = (depth_bits > 17);
+
+	/* Right now GLX_SWAP_COPY_OML isn't supported, but it would be easy
+	 * enough to add support.  Basically, if a context is created with an
+	 * fbconfig where the swap method is GLX_SWAP_COPY_OML, pageflipping
+	 * will never be used.
+	 */
+
+	static const GLenum db_modes[2] = { GLX_NONE, GLX_SWAP_UNDEFINED_OML };
+	uint8_t depth_bits_array[4];
+	uint8_t stencil_bits_array[4];
+        uint8_t msaa_samples_array[1];
+	if(deep) {
+		depth_bits_array[0] = 0;
+		depth_bits_array[1] = 24;
+		stencil_bits_array[0] = 0;
+		stencil_bits_array[1] = 8;
+	} else {
+		depth_bits_array[0] = depth_bits;
+		depth_bits_array[1] = 0;
+		depth_bits_array[2] = depth_bits;
+		depth_bits_array[3] = 0;
+		stencil_bits_array[0] = 0;
+		stencil_bits_array[1] = 0;
+		stencil_bits_array[2] = 8;
+		stencil_bits_array[3] = 8;
+	}
+
+	msaa_samples_array[0] = 0;
+
+	return (const __DRIconfig **)
+	   driCreateConfigs(deep ? GL_RGBA : GL_RGB,
+			    deep ? GL_UNSIGNED_INT_8_8_8_8 :
+				   GL_UNSIGNED_SHORT_5_6_5,
+			    depth_bits_array,
+			    stencil_bits_array,
+			    deep ? 2 : 4,
+			    db_modes, 2,
+			    msaa_samples_array, 1,
+			    GL_TRUE);
+}
+
+/**
+ * This is the driver specific part of the createNewScreen entry point.
+ * 
+ * \todo maybe fold this into intelInitDriver
+ *
+ * \return the __GLcontextModes supported by this driver
+ */
+static const __DRIconfig **
+tdfxInitScreen(__DRIscreen *psp)
+{
+   static const __DRIversion ddx_expected = { 1, 1, 0 };
+   static const __DRIversion dri_expected = { 4, 0, 0 };
+   static const __DRIversion drm_expected = { 1, 0, 0 };
+
+   /* divined from tdfx_dri.c, sketchy */
+   TDFXDRIPtr dri_priv = (TDFXDRIPtr) psp->pDevPriv;
+
+   /* XXX i wish it was like this */
+   /* bpp = dri_priv->bpp */
+   int bpp = (dri_priv->cpp > 2) ? 24 : 16;
+
+   if ( ! driCheckDriDdxDrmVersions2( "tdfx",
+				      &psp->dri_version, & dri_expected,
+				      &psp->ddx_version, & ddx_expected,
+				      &psp->drm_version, & drm_expected ) )
+      return NULL;
+
+   if (!tdfxInitDriver(psp))
+      return NULL;
+      
+   return tdfxFillInModes(psp,
+			  bpp, (bpp == 16) ? 16 : 24,
+			  (bpp == 16) ? 0 : 8,
+			  (dri_priv->backOffset!=dri_priv->depthOffset));
+}
+
+const struct __DriverAPIRec driDriverAPI = {
+   .InitScreen      = tdfxInitScreen,
+   .DestroyScreen   = tdfxDestroyScreen,
+   .CreateContext   = tdfxCreateContext,
+   .DestroyContext  = tdfxDestroyContext,
+   .CreateBuffer    = tdfxCreateBuffer,
+   .DestroyBuffer   = tdfxDestroyBuffer,
+   .SwapBuffers     = tdfxSwapBuffers,
+   .MakeCurrent     = tdfxMakeCurrent,
+   .UnbindContext   = tdfxUnbindContext,
+   .GetSwapInfo     = NULL,
+   .GetDrawableMSC  = NULL,
+   .WaitForMSC      = NULL,
+   .WaitForSBC      = NULL,
+   .SwapBuffersMSC  = NULL
+};
+
+/* This is the table of extensions that the loader will dlsym() for. */
+PUBLIC const __DRIextension *__driDriverExtensions[] = {
+    &driCoreExtension.base,
+    &driLegacyExtension.base,
+    NULL
+};