1 files changed, 138 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i810/i810span.c b/src/mesa/drivers/dri/i810/i810span.c
new file mode 100644
index 0000000000..6576f6745e
--- /dev/null
+++ b/src/mesa/drivers/dri/i810/i810span.c
@@ -0,0 +1,138 @@
+#include "main/glheader.h"
+#include "main/macros.h"
+#include "main/mtypes.h"
+#include "main/colormac.h"
+#include "swrast/swrast.h"
+
+#include "i810screen.h"
+#include "i810_dri.h"
+
+#include "i810span.h"
+#include "i810ioctl.h"
+
+
+#define DBG 0
+
+#define LOCAL_VARS					\
+   i810ContextPtr imesa = I810_CONTEXT(ctx);	        \
+   __DRIdrawable *dPriv = imesa->driDrawable;	\
+   driRenderbuffer *drb = (driRenderbuffer *) rb;	\
+   GLuint pitch = drb->pitch;				\
+   GLuint height = dPriv->h;				\
+   GLushort p;						\
+   char *buf = (char *)(drb->flippedData +		\
+			dPriv->x * 2 +			\
+			dPriv->y * pitch);		\
+   (void) buf; (void) p
+
+#define LOCAL_DEPTH_VARS				\
+   i810ContextPtr imesa = I810_CONTEXT(ctx);	        \
+   __DRIdrawable *dPriv = imesa->driDrawable;	\
+   driRenderbuffer *drb = (driRenderbuffer *) rb;	\
+   GLuint pitch = drb->pitch;				\
+   GLuint height = dPriv->h;				\
+   char *buf = (char *)(drb->Base.Data +		\
+			dPriv->x * 2 +			\
+			dPriv->y * pitch)
+
+#define INIT_MONO_PIXEL(p, color) \
+   p = PACK_COLOR_565( 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 >> 8) & 0xf8) * 255 / 0xf8;				\
+   rgba[1] = ((p >> 3) & 0xfc) * 255 / 0xfc;				\
+   rgba[2] = ((p << 3) & 0xf8) * 255 / 0xf8;				\
+   rgba[3] = 255;							\
+} while(0)
+
+#define TAG(x) i810##x##_565
+#include "spantmp.h"
+
+/* 16 bit depthbuffer functions.
+ */
+#define VALUE_TYPE GLushort
+
+#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) i810##x##_z16
+#include "depthtmp.h"
+
+
+/* Move locking out to get reasonable span performance.
+ */
+void i810SpanRenderStart( GLcontext *ctx )
+{
+   i810ContextPtr imesa = I810_CONTEXT(ctx);
+   I810_FIREVERTICES(imesa);
+   LOCK_HARDWARE(imesa);
+   i810RegetLockQuiescent( imesa );
+}
+
+void i810SpanRenderFinish( GLcontext *ctx )
+{
+   i810ContextPtr imesa = I810_CONTEXT( ctx );
+   _swrast_flush( ctx );
+   UNLOCK_HARDWARE( imesa );
+}
+
+void i810InitSpanFuncs( GLcontext *ctx )
+{
+   struct swrast_device_driver *swdd = _swrast_GetDeviceDriverReference(ctx);
+   swdd->SpanRenderStart = i810SpanRenderStart;
+   swdd->SpanRenderFinish = i810SpanRenderFinish; 
+}
+
+
+
+/**
+ * Plug in the Get/Put routines for the given driRenderbuffer.
+ */
+void
+i810SetSpanFunctions(driRenderbuffer *drb, const GLvisual *vis)
+{
+   if (drb->Base.InternalFormat == GL_RGBA) {
+      /* always 565 RGB */
+      i810InitPointers_565(&drb->Base);
+   }
+   else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT16) {
+      i810InitDepthPointers_z16(&drb->Base);
+   }
+   else if (drb->Base.InternalFormat == GL_DEPTH_COMPONENT24) {
+      /* should never get here */
+      drb->Base.GetRow        = NULL;
+      drb->Base.GetValues     = NULL;
+      drb->Base.PutRow        = NULL;
+      drb->Base.PutMonoRow    = NULL;
+      drb->Base.PutValues     = NULL;
+      drb->Base.PutMonoValues = NULL;
+   }
+   else if (drb->Base.InternalFormat == GL_STENCIL_INDEX8_EXT) {
+      drb->Base.GetRow        = NULL;
+      drb->Base.GetValues     = NULL;
+      drb->Base.PutRow        = NULL;
+      drb->Base.PutMonoRow    = NULL;
+      drb->Base.PutValues     = NULL;
+      drb->Base.PutMonoValues = NULL;
+   }
+}