add the i810 driver - no kernel driver yet

(build tested, but not physically tested)

1 files changed, 214 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i810/i810render.c b/src/mesa/drivers/dri/i810/i810render.c
new file mode 100644
index 00000000000..8d388d88b3f
--- /dev/null
+++ b/src/mesa/drivers/dri/i810/i810render.c
@@ -0,0 +1,214 @@
+/*
+ * Intel i810 DRI driver for Mesa 3.5
+ *
+ * Copyright (C) 1999-2000  Keith Whitwell   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 KEITH WHITWELL 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.
+ *
+ * Author:
+ *    Keith Whitwell <[email protected]>
+ */
+
+
+/*
+ * Render unclipped vertex buffers by emitting vertices directly to
+ * dma buffers.  Use strip/fan hardware acceleration where possible.
+ *
+ */
+#include "glheader.h"
+#include "context.h"
+#include "macros.h"
+#include "imports.h"
+#include "mtypes.h"
+
+#include "tnl/t_context.h"
+
+#include "i810screen.h"
+#include "i810_dri.h"
+
+#include "i810context.h"
+#include "i810tris.h"
+#include "i810state.h"
+#include "i810vb.h"
+#include "i810ioctl.h"
+
+/*
+ * Render unclipped vertex buffers by emitting vertices directly to
+ * dma buffers.  Use strip/fan hardware primitives where possible.
+ * Try to simulate missing primitives with indexed vertices.
+ */
+#define HAVE_POINTS      0
+#define HAVE_LINES       1
+#define HAVE_LINE_STRIPS 1
+#define HAVE_TRIANGLES   1
+#define HAVE_TRI_STRIPS  1
+#define HAVE_TRI_STRIP_1 0	/* has it, template can't use it yet */
+#define HAVE_TRI_FANS    1
+#define HAVE_POLYGONS    1
+#define HAVE_QUADS       0
+#define HAVE_QUAD_STRIPS 0
+
+#define HAVE_ELTS        0
+
+
+static GLuint hw_prim[GL_POLYGON+1] = {
+   0,
+   PR_LINES,
+   0,
+   PR_LINESTRIP,
+   PR_TRIANGLES,
+   PR_TRISTRIP_0,
+   PR_TRIFAN,
+   0,
+   0,
+   PR_POLYGON
+};
+
+static const GLenum reduced_prim[GL_POLYGON+1] = {
+   GL_POINTS,
+   GL_LINES,
+   GL_LINES,
+   GL_LINES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES,
+   GL_TRIANGLES
+};
+
+/* Fallback to normal rendering.
+ */
+static void VERT_FALLBACK( GLcontext *ctx,
+			   GLuint start,
+			   GLuint count,
+			   GLuint flags )
+{
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   tnl->Driver.Render.PrimitiveNotify( ctx, flags & PRIM_MODE_MASK );
+   tnl->Driver.Render.BuildVertices( ctx, start, count, ~0 );
+   tnl->Driver.Render.PrimTabVerts[flags&PRIM_MODE_MASK]( ctx, start, 
+							  count, flags );
+   I810_CONTEXT(ctx)->SetupNewInputs = VERT_BIT_CLIP;
+}
+
+
+
+#define LOCAL_VARS i810ContextPtr imesa = I810_CONTEXT(ctx)
+#define INIT( prim ) do {						\
+   I810_STATECHANGE(imesa, 0);						\
+   i810RasterPrimitive( ctx, reduced_prim[prim], hw_prim[prim] );	\
+} while (0)
+#define NEW_PRIMITIVE()  I810_STATECHANGE( imesa, 0 )
+#define NEW_BUFFER()  I810_FIREVERTICES( imesa )
+#define GET_CURRENT_VB_MAX_VERTS() \
+  (((int)imesa->vertex_high - (int)imesa->vertex_low) / (imesa->vertex_size*4))
+#define GET_SUBSEQUENT_VB_MAX_VERTS() \
+  (I810_DMA_BUF_SZ-4) / (imesa->vertex_size * 4)
+
+
+#define EMIT_VERTS( ctx, j, nr ) \
+  i810_emit_contiguous_verts(ctx, j, (j)+(nr))
+
+
+#define TAG(x) i810_##x
+#include "tnl_dd/t_dd_dmatmp.h"
+
+
+/**********************************************************************/
+/*                          Render pipeline stage                     */
+/**********************************************************************/
+
+
+static GLboolean i810_run_render( GLcontext *ctx,
+				  struct gl_pipeline_stage *stage )
+{
+   i810ContextPtr imesa = I810_CONTEXT(ctx);
+   TNLcontext *tnl = TNL_CONTEXT(ctx);
+   struct vertex_buffer *VB = &tnl->vb;
+   GLuint i, length, flags = 0;
+
+   /* Don't handle clipping or indexed vertices.
+    */
+   if (VB->ClipOrMask || imesa->RenderIndex != 0 || VB->Elts) {
+      return GL_TRUE;
+   }
+
+   imesa->SetupNewInputs = VERT_BIT_CLIP;
+
+   tnl->Driver.Render.Start( ctx );
+
+   for (i = VB->FirstPrimitive ; !(flags & PRIM_LAST) ; i += length)
+   {
+      flags = VB->Primitive[i];
+      length= VB->PrimitiveLength[i];
+      if (length)
+	 i810_render_tab_verts[flags & PRIM_MODE_MASK]( ctx, i, i + length,
+							flags );
+   }
+
+   tnl->Driver.Render.Finish( ctx );
+
+   return GL_FALSE;		/* finished the pipe */
+}
+
+
+static void i810_check_render( GLcontext *ctx, struct gl_pipeline_stage *stage )
+{
+   GLuint inputs = VERT_BIT_CLIP | VERT_BIT_COLOR0;
+
+   if (ctx->RenderMode == GL_RENDER) {
+      if (ctx->_TriangleCaps & DD_SEPARATE_SPECULAR)
+	 inputs |= VERT_BIT_COLOR1;
+
+      if (ctx->Texture.Unit[0]._ReallyEnabled)
+	 inputs |= VERT_BIT_TEX0;
+
+      if (ctx->Texture.Unit[1]._ReallyEnabled)
+	 inputs |= VERT_BIT_TEX1;
+
+      if (ctx->Fog.Enabled)
+	 inputs |= VERT_BIT_FOG;
+   }
+
+   stage->inputs = inputs;
+}
+
+
+static void dtr( struct gl_pipeline_stage *stage )
+{
+   (void)stage;
+}
+
+
+const struct gl_pipeline_stage _i810_render_stage =
+{
+   "i810 render",
+   (_DD_NEW_SEPARATE_SPECULAR |
+    _NEW_TEXTURE|
+    _NEW_FOG|
+    _NEW_RENDERMODE),		/* re-check (new inputs) */
+   0,				/* re-run (always runs) */
+   GL_TRUE,			/* active */
+   0, 0,			/* inputs (set in check_render), outputs */
+   0, 0,			/* changed_inputs, private */
+   dtr,				/* destructor */
+   i810_check_render,		/* check - initially set to alloc data */
+   i810_run_render		/* run */
+};