Add Intel i965G/Q DRI driver.

This driver comes from Tungsten Graphics, with a few further modifications by
Intel.

1 files changed, 279 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/intel_span.c b/src/mesa/drivers/dri/i965/intel_span.c
new file mode 100644
index 0000000000..da6c119bb2
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/intel_span.c
@@ -0,0 +1,279 @@
+/**************************************************************************
+ * 
+ * Copyright 2003 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL TUNGSTEN GRAPHICS AND/OR ITS SUPPLIERS 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 "glheader.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "colormac.h"
+
+#include "intel_screen.h"
+#include "intel_regions.h"
+#include "intel_span.h"
+#include "intel_ioctl.h"
+#include "intel_tex.h"
+#include "swrast/swrast.h"
+
+#undef DBG
+#define DBG 0
+
+#define LOCAL_VARS						\
+   struct intel_context *intel = intel_context(ctx);                    \
+   __DRIdrawablePrivate *dPriv = intel->driDrawable;		\
+   driRenderbuffer *drb = (driRenderbuffer *) rb;		\
+   GLuint pitch = drb->pitch;					\
+   GLuint height = dPriv->h;					\
+   char *buf = (char *) drb->Base.Data +			\
+			dPriv->x * drb->cpp +			\
+			dPriv->y * pitch;			\
+   GLushort p;							\
+   (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS					\
+   struct intel_context *intel = intel_context(ctx);                    \
+   __DRIdrawablePrivate *dPriv = intel->driDrawable;		\
+   driRenderbuffer *drb = (driRenderbuffer *) rb;		\
+   GLuint pitch = drb->pitch;					\
+   GLuint height = dPriv->h;					\
+   char *buf = (char *) drb->Base.Data +			\
+			dPriv->x * drb->cpp +			\
+			dPriv->y * pitch
+
+#define LOCAL_STENCIL_VARS LOCAL_DEPTH_VARS 
+
+#define INIT_MONO_PIXEL(p,color)\
+	 p = INTEL_PACKCOLOR565(color[0],color[1],color[2])
+
+#define Y_FLIP(_y) (height - _y - 1)
+
+#define HW_LOCK()
+
+#define HW_UNLOCK()
+
+/* 16 bit, 565 rgb color spanline and pixel functions
+ */
+#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 *)(buf + _x*2 + _y*pitch);		\
+   rgba[0] = (((p >> 11) & 0x1f) * 255) / 31;			\
+   rgba[1] = (((p >>  5) & 0x3f) * 255) / 63;			\
+   rgba[2] = (((p >>  0) & 0x1f) * 255) / 31;			\
+   rgba[3] = 255;						\
+} while(0)
+
+#define TAG(x) intel##x##_565
+#include "spantmp.h"
+
+/* 15 bit, 555 rgb color spanline and pixel functions
+ */
+#define WRITE_RGBA( _x, _y, r, g, b, a )			\
+   *(GLushort *)(buf + _x*2 + _y*pitch)  = (((r & 0xf8) << 7) |	\
+		                            ((g & 0xf8) << 3) |	\
+                         		    ((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 *)(buf + _x*2 + _y*pitch);		\
+   rgba[0] = (p >> 7) & 0xf8;					\
+   rgba[1] = (p >> 3) & 0xf8;					\
+   rgba[2] = (p << 3) & 0xf8;					\
+   rgba[3] = 255;						\
+} while(0)
+
+#define TAG(x) intel##x##_555
+#include "spantmp.h"
+
+/* 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) intel##x##_z16
+#include "depthtmp.h"
+
+
+#undef LOCAL_VARS
+#define LOCAL_VARS						\
+   struct intel_context *intel = intel_context(ctx);			\
+   __DRIdrawablePrivate *dPriv = intel->driDrawable;		\
+   driRenderbuffer *drb = (driRenderbuffer *) rb;		\
+   GLuint pitch = drb->pitch;					\
+   GLuint height = dPriv->h;					\
+   char *buf = (char *)drb->Base.Data +				\
+			dPriv->x * drb->cpp +			\
+			dPriv->y * pitch;			\
+   GLuint p;							\
+   (void) buf; (void) p
+
+#undef INIT_MONO_PIXEL
+#define INIT_MONO_PIXEL(p,color)\
+	 p = INTEL_PACKCOLOR8888(color[0],color[1],color[2],color[3])
+
+/* 32 bit, 8888 argb color spanline and pixel functions
+ */
+#define WRITE_RGBA(_x, _y, r, g, b, a)			\
+    *(GLuint *)(buf + _x*4 + _y*pitch) = ((r << 16) |	\
+					  (g << 8)  |	\
+					  (b << 0)  |	\
+					  (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 *)(buf + _x*4 + _y*pitch);		\
+	rgba[0] = (p >> 16) & 0xff;				\
+	rgba[1] = (p >> 8)  & 0xff;				\
+	rgba[2] = (p >> 0)  & 0xff;				\
+	rgba[3] = (p >> 24) & 0xff;				\
+    } while (0)
+
+#define TAG(x) intel##x##_8888
+#include "spantmp.h"
+
+
+/* 24/8 bit interleaved depth/stencil functions
+ */
+#define WRITE_DEPTH( _x, _y, d ) {			\
+   GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);	\
+   tmp &= 0xff000000;					\
+   tmp |= (d) & 0xffffff;				\
+   *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;		\
+}
+
+#define READ_DEPTH( d, _x, _y )		\
+   d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) & 0xffffff;
+
+
+#define TAG(x) intel##x##_z24_s8
+#include "depthtmp.h"
+
+#define WRITE_STENCIL( _x, _y, d ) {			\
+   GLuint tmp = *(GLuint *)(buf + (_x)*4 + (_y)*pitch);	\
+   tmp &= 0xffffff;					\
+   tmp |= ((d)<<24);					\
+   *(GLuint *)(buf + (_x)*4 + (_y)*pitch) = tmp;		\
+}
+
+#define READ_STENCIL( d, _x, _y )			\
+   d = *(GLuint *)(buf + (_x)*4 + (_y)*pitch) >> 24;
+
+#define TAG(x) intel##x##_z24_s8
+#include "stenciltmp.h"
+
+
+/* Move locking out to get reasonable span performance.
+ */
+void intelSpanRenderStart( GLcontext *ctx )
+{
+   struct intel_context *intel = intel_context(ctx);
+
+   LOCK_HARDWARE(intel);
+
+#if 0
+   if (intel->flushBeforeFallback) {
+      intelFinish(&intel->ctx);
+      intel->flushBeforeFallback = GL_FALSE;
+   }
+#endif
+
+   /* Just map the framebuffer and all textures.  Bufmgr code will
+    * take care of waiting on the necessary fences:
+    */
+   intel_region_map(intel, intel->front_region);
+   intel_region_map(intel, intel->back_region);
+   intel_region_map(intel, intel->depth_region);
+}
+
+void intelSpanRenderFinish( GLcontext *ctx )
+{
+   struct intel_context *intel = intel_context( ctx );
+
+   _swrast_flush( ctx );
+
+   /* Now unmap the framebuffer:
+    */
+   intel_region_unmap(intel, intel->front_region);
+   intel_region_unmap(intel, intel->back_region);
+   intel_region_unmap(intel, intel->depth_region);
+
+   UNLOCK_HARDWARE( intel );
+}
+
+void intelInitSpanFuncs( GLcontext *ctx )
+{
+   struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+   swdd->SpanRenderStart = intelSpanRenderStart;
+   swdd->SpanRenderFinish = intelSpanRenderFinish; 
+}
+
+
+/**
+ * Plug in the Get/Put routines for the given driRenderbuffer.
+ */
+void
+intelSetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
+{
+   if (drb->Base.InternalFormat == GL_RGBA) {
+      if (vis->redBits == 5 && vis->greenBits == 5 && vis->blueBits == 5) {
+         intelInitPointers_555(&drb->Base);
+      }
+      else if (vis->redBits == 5 && vis->greenBits == 6 && vis->blueBits == 5) {
+         intelInitPointers_565(&drb->Base);
+      }
+      else {
+         assert(vis->redBits == 8);
+         assert(vis->greenBits == 8);
+         assert(vis->blueBits == 8);
+         intelInitPointers_8888(&drb->Base);
+      }
+   }
+   else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
+      intelInitDepthPointers_z16(&drb->Base);
+   }
+   else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
+      intelInitDepthPointers_z24_s8(&drb->Base);
+   }
+   else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
+      intelInitStencilPointers_z24_s8(&drb->Base);
+   }
+}