Initial mach64 driver import for DRI mach64-0-0-6 branch,

this compiles but I doubt it works but it is a better starting point
than the branch

1 files changed, 274 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/mach64/mach64_span.c b/src/mesa/drivers/dri/mach64/mach64_span.c
new file mode 100644
index 00000000000..4c668ba90ee
--- /dev/null
+++ b/src/mesa/drivers/dri/mach64/mach64_span.c
@@ -0,0 +1,274 @@
+/* $XFree86$ */ /* -*- mode: c; c-basic-offset: 3 -*- */
+/*
+ * Copyright 2000 Gareth Hughes
+ * 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
+ * GARETH HUGHES 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.
+ */
+
+/*
+ * Authors:
+ *	Gareth Hughes <[email protected]>
+ *	Leif Delgass <[email protected]>
+ *	Jos� Fonseca <[email protected]>
+ */
+
+#include "mach64_context.h"
+#include "mach64_ioctl.h"
+#include "mach64_state.h"
+#include "mach64_span.h"
+#include "mach64_tex.h"
+
+#include "swrast/swrast.h"
+
+#define DBG 0
+
+#define LOCAL_VARS							\
+   mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);			\
+   mach64ScreenRec *mach64Screen = mmesa->mach64Screen;			\
+   __DRIscreenPrivate *driScreen = mmesa->driScreen;			\
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;			\
+   GLuint pitch = mmesa->drawPitch * mach64Screen->cpp;			\
+   GLuint height = dPriv->h;						\
+   char *buf = (char *)(driScreen->pFB +				\
+			mmesa->drawOffset +				\
+			(dPriv->x * mach64Screen->cpp) +		\
+			(dPriv->y * pitch));				\
+   char *read_buf = (char *)(driScreen->pFB +				\
+			     mmesa->readOffset +			\
+			     (dPriv->x * mach64Screen->cpp) +		\
+			     (dPriv->y * pitch));			\
+   GLushort p;								\
+   (void) read_buf; (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS						\
+   mach64ScreenRec *mach64Screen = mmesa->mach64Screen;			\
+   __DRIdrawablePrivate *dPriv = mmesa->driDrawable;			\
+   __DRIscreenPrivate *driScreen = mmesa->driScreen;			\
+   GLuint pitch = mach64Screen->depthPitch * 2;				\
+   GLuint height = dPriv->h;						\
+   char *buf = (char *)(driScreen->pFB +				\
+			mach64Screen->depthOffset +			\
+			dPriv->x * 2 +					\
+			dPriv->y * pitch)
+
+#define LOCAL_STENCIL_VARS	LOCAL_DEPTH_VARS
+
+#define CLIPPIXEL( _x, _y )						\
+   ((_x >= minx) && (_x < maxx) && (_y >= miny) && (_y < maxy))
+
+
+#define CLIPSPAN( _x, _y, _n, _x1, _n1, _i )				\
+   if (( _y < miny) || (_y >= maxy)) {					\
+      _n1 = 0, _x1 = x;							\
+   } else {								\
+      _n1 = _n;								\
+      _x1 = _x;								\
+      if (_x1 < minx) _i += (minx-_x1), n1 -= (minx-_x1), _x1 = minx;	\
+      if (_x1 + _n1 >= maxx) n1 -= (_x1 + n1 - maxx);			\
+   }
+
+#define Y_FLIP( _y )	(height - _y - 1)
+
+
+#define HW_LOCK()							\
+   mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);			\
+   LOCK_HARDWARE( mmesa );						\
+   FINISH_DMA_LOCKED( mmesa );						\
+
+#define HW_CLIPLOOP()							\
+   do {									\
+      int _nc = mmesa->numClipRects;					\
+									\
+      while ( _nc-- ) {							\
+	 int minx = mmesa->pClipRects[_nc].x1 - mmesa->drawX;		\
+	 int miny = mmesa->pClipRects[_nc].y1 - mmesa->drawY;		\
+	 int maxx = mmesa->pClipRects[_nc].x2 - mmesa->drawX;		\
+	 int maxy = mmesa->pClipRects[_nc].y2 - mmesa->drawY;
+
+#define HW_ENDCLIPLOOP()						\
+      }									\
+   } while (0)
+
+#define HW_UNLOCK()							\
+   UNLOCK_HARDWARE( mmesa )						\
+
+
+
+/* ================================================================
+ * Color buffer
+ */
+
+/* 16 bit, RGB565 color spanline and pixel functions
+ */
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+  p = MACH64PACKCOLOR565( color[0], color[1], color[2] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   *(GLushort *)(buf + _x*2 + _y*pitch) = ((((int)r & 0xf8) << 8) |	\
+					   (((int)g & 0xfc) << 3) |	\
+					   (((int)b & 0xf8) >> 3))
+
+#define WRITE_PIXEL( _x, _y, p )					\
+    *(GLushort *)(buf + _x*2 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y )					\
+    do {								\
+	GLushort p = *(GLushort *)(read_buf + _x*2 + _y*pitch);		\
+	rgba[0] = ((p >> 8) & 0xf8) * 255 / 0xf8;			\
+	rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;			\
+	rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;			\
+	rgba[3] = 0xff;							\
+    } while (0)
+
+#define TAG(x) mach64##x##_RGB565
+#include "spantmp.h"
+
+
+
+/* 32 bit, ARGB8888 color spanline and pixel functions
+ */
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p, color) \
+  p = MACH64PACKCOLOR8888( color[0], color[1], color[2], color[3] )
+
+#define WRITE_RGBA( _x, _y, r, g, b, a )				\
+   *(GLuint *)(buf + _x*4 + _y*pitch) = ((b <<  0) |			\
+					 (g <<  8) |			\
+					 (r << 16) |			\
+					 (a << 24) )
+
+#define WRITE_PIXEL( _x, _y, p )					\
+   *(GLuint *)(buf + _x*4 + _y*pitch) = p
+
+#define READ_RGBA( rgba, _x, _y )					\
+do {									\
+   GLuint p = *(GLuint *)(read_buf + _x*4 + _y*pitch);			\
+   rgba[0] = (p >> 16) & 0xff;						\
+   rgba[1] = (p >>  8) & 0xff;						\
+   rgba[2] = (p >>  0) & 0xff;						\
+   rgba[3] = 0xff; /*(p >> 24) & 0xff;*/				\
+} while (0)
+
+#define TAG(x) mach64##x##_ARGB8888
+#include "spantmp.h"
+
+
+
+/* ================================================================
+ * Depth buffer
+ */
+
+/* 16 bit depthbuffer functions.
+ */
+#define WRITE_DEPTH( _x, _y, d )					\
+   *(GLushort *)(buf + _x*2 + _y*pitch) = d;
+
+#define READ_DEPTH( d, _x, _y )						\
+   d = *(GLushort *)(buf + _x*2 + _y*pitch);
+
+#define TAG(x) mach64##x##_16
+#include "depthtmp.h"
+
+
+/*
+ * This function is called to specify which buffer to read and write
+ * for software rasterization (swrast) fallbacks.  This doesn't necessarily
+ * correspond to glDrawBuffer() or glReadBuffer() calls.
+ */
+static void mach64DDSetBuffer( GLcontext *ctx,
+			       GLframebuffer *colorBuffer,
+			       GLuint bufferBit )
+{
+   mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
+
+   switch ( bufferBit ) {
+   case FRONT_LEFT_BIT:
+      if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
+	 fprintf(stderr,"%s: FRONT_LEFT_BIT\n", __FUNCTION__);
+      mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->frontOffset;
+      mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->frontPitch;
+      break;
+   case BACK_LEFT_BIT:
+      if (MACH64_DEBUG & DEBUG_VERBOSE_MSG)
+	 fprintf(stderr,"%s: BACK_LEFT_BIT\n", __FUNCTION__);
+      mmesa->drawOffset = mmesa->readOffset = mmesa->mach64Screen->backOffset;
+      mmesa->drawPitch  = mmesa->readPitch  = mmesa->mach64Screen->backPitch;
+      break;
+   default:
+      break;
+   }
+}
+
+
+void mach64DDInitSpanFuncs( GLcontext *ctx )
+{
+   mach64ContextPtr mmesa = MACH64_CONTEXT(ctx);
+   struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+
+   swdd->SetBuffer = mach64DDSetBuffer;
+
+
+   switch ( mmesa->mach64Screen->cpp ) {
+   case 2:
+      swdd->WriteRGBASpan	= mach64WriteRGBASpan_RGB565;
+      swdd->WriteRGBSpan	= mach64WriteRGBSpan_RGB565;
+      swdd->WriteMonoRGBASpan	= mach64WriteMonoRGBASpan_RGB565;
+      swdd->WriteRGBAPixels	= mach64WriteRGBAPixels_RGB565;
+      swdd->WriteMonoRGBAPixels	= mach64WriteMonoRGBAPixels_RGB565;
+      swdd->ReadRGBASpan	= mach64ReadRGBASpan_RGB565;
+      swdd->ReadRGBAPixels	= mach64ReadRGBAPixels_RGB565;
+      break;
+
+   case 4:
+      swdd->WriteRGBASpan	= mach64WriteRGBASpan_ARGB8888;
+      swdd->WriteRGBSpan	= mach64WriteRGBSpan_ARGB8888;
+      swdd->WriteMonoRGBASpan	= mach64WriteMonoRGBASpan_ARGB8888;
+      swdd->WriteRGBAPixels	= mach64WriteRGBAPixels_ARGB8888;
+      swdd->WriteMonoRGBAPixels	= mach64WriteMonoRGBAPixels_ARGB8888;
+      swdd->ReadRGBASpan	= mach64ReadRGBASpan_ARGB8888;
+      swdd->ReadRGBAPixels	= mach64ReadRGBAPixels_ARGB8888;
+
+      break;
+
+   default:
+      break;
+   }
+
+   /* Depth buffer is always 16 bit */
+   swdd->ReadDepthSpan		= mach64ReadDepthSpan_16;
+   swdd->WriteDepthSpan		= mach64WriteDepthSpan_16;
+   swdd->ReadDepthPixels	= mach64ReadDepthPixels_16;
+   swdd->WriteDepthPixels	= mach64WriteDepthPixels_16;
+  
+   /* No hardware stencil buffer */
+   swdd->ReadStencilSpan	= NULL;
+   swdd->WriteStencilSpan	= NULL;
+   swdd->ReadStencilPixels	= NULL;
+   swdd->WriteStencilPixels	= NULL;
+
+   swdd->WriteCI8Span		= NULL;
+   swdd->WriteCI32Span		= NULL;
+   swdd->WriteMonoCISpan	= NULL;
+   swdd->WriteCI32Pixels	= NULL;
+   swdd->WriteMonoCIPixels	= NULL;
+   swdd->ReadCI32Span		= NULL;
+   swdd->ReadCI32Pixels		= NULL;
+}