Add Intel i965G/Q DRI driver.

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

1 files changed, 468 insertions, 0 deletions

diff --git a/src/mesa/drivers/dri/i965/brw_fallback.c b/src/mesa/drivers/dri/i965/brw_fallback.c
new file mode 100644
index 0000000000..6bb3dd2217
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_fallback.c
@@ -0,0 +1,468 @@
+/**************************************************************************
+ * 
+ * Copyright 2005 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 "swrast_setup/swrast_setup.h"
+#include "swrast/swrast.h"
+#include "tnl/tnl.h"
+#include "context.h"
+#include "brw_context.h"
+#include "brw_exec.h"
+#include "brw_save.h"
+#include "brw_fallback.h"
+
+#include "glheader.h"
+#include "enums.h"
+#include "glapi.h"
+#include "imports.h"
+#include "macros.h"
+#include "mtypes.h"
+#include "dispatch.h"
+
+
+typedef void (*attr_func)( GLcontext *ctx, GLint target, const GLfloat * );
+
+
+/* Wrapper functions in case glVertexAttrib*fvNV doesn't exist */
+static void VertexAttrib1fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib1fvNV(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib2fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib2fvNV(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib3fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib3fvNV(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib4fvNV(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib4fvNV(ctx->Exec, (target, v));
+}
+
+static attr_func vert_attrfunc[4] = {
+   VertexAttrib1fvNV,
+   VertexAttrib2fvNV,
+   VertexAttrib3fvNV,
+   VertexAttrib4fvNV
+};
+
+#if 0
+static void VertexAttrib1fvARB(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib1fvARB(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib2fvARB(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib2fvARB(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib3fvARB(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib3fvARB(ctx->Exec, (target, v));
+}
+
+static void VertexAttrib4fvARB(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   CALL_VertexAttrib4fvARB(ctx->Exec, (target, v));
+}
+
+
+static attr_func vert_attrfunc_arb[4] = {
+   VertexAttrib1fvARB,
+   VertexAttrib2fvARB,
+   VertexAttrib3fvARB,
+   VertexAttrib4fvARB
+};
+#endif
+
+
+
+
+
+
+static void mat_attr1fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case BRW_ATTRIB_MAT_FRONT_SHININESS:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_SHININESS, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_SHININESS:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_SHININESS, v ));
+      break;
+   }
+}
+
+
+static void mat_attr3fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case BRW_ATTRIB_MAT_FRONT_INDEXES:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_COLOR_INDEXES, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_INDEXES:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_COLOR_INDEXES, v ));
+      break;
+   }
+}
+
+
+static void mat_attr4fv( GLcontext *ctx, GLint target, const GLfloat *v )
+{
+   switch (target) {
+   case BRW_ATTRIB_MAT_FRONT_EMISSION:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_EMISSION, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_EMISSION:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_EMISSION, v ));
+      break;
+   case BRW_ATTRIB_MAT_FRONT_AMBIENT:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_AMBIENT, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_AMBIENT:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_AMBIENT, v ));
+      break;
+   case BRW_ATTRIB_MAT_FRONT_DIFFUSE:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_DIFFUSE, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_DIFFUSE:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_DIFFUSE, v ));
+      break;
+   case BRW_ATTRIB_MAT_FRONT_SPECULAR:
+      CALL_Materialfv(ctx->Exec, ( GL_FRONT, GL_SPECULAR, v ));
+      break;
+   case BRW_ATTRIB_MAT_BACK_SPECULAR:
+      CALL_Materialfv(ctx->Exec, ( GL_BACK, GL_SPECULAR, v ));
+      break;
+   }
+}
+
+
+static attr_func mat_attrfunc[4] = {
+   mat_attr1fv,
+   NULL,
+   mat_attr3fv,
+   mat_attr4fv
+};
+
+
+static void index_attr1fv(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   (void) target;
+   CALL_Indexf(ctx->Exec, (v[0]));
+}
+
+static void edgeflag_attr1fv(GLcontext *ctx, GLint target, const GLfloat *v)
+{
+   (void) target;
+   CALL_EdgeFlag(ctx->Exec, ((GLboolean)(v[0] == 1.0)));
+}
+
+struct loopback_attr {
+   GLint target;
+   GLint sz;
+   attr_func func;
+};
+
+/* Don't emit ends and begins on wrapped primitives.  Don't replay
+ * wrapped vertices.  If we get here, it's probably because the the
+ * precalculated wrapping is wrong.
+ */
+static void loopback_prim( GLcontext *ctx,
+			   const GLfloat *buffer,
+			   const struct brw_draw_prim *prim,
+			   GLuint wrap_count,
+			   GLuint vertex_size,
+			   const struct loopback_attr *la, GLuint nr )
+{
+   GLint start = prim->start;
+   GLint end = start + prim->count;
+   const GLfloat *data;
+   GLint j;
+   GLuint k;
+
+   if (0)
+      _mesa_printf("loopback prim %s(%s,%s) verts %d..%d\n",
+		   _mesa_lookup_enum_by_nr(prim->mode),
+		   prim->begin ? "begin" : "..",
+		   prim->end ? "end" : "..",
+		   start, 
+		   end);
+
+   if (prim->begin) {
+      CALL_Begin(GET_DISPATCH(), ( prim->mode ));
+   }
+   else {
+      assert(start == 0);
+      start += wrap_count;
+   }
+
+   data = buffer + start * vertex_size;
+
+   for (j = start ; j < end ; j++) {
+      const GLfloat *tmp = data + la[0].sz;
+
+      for (k = 1 ; k < nr ; k++) {
+	 la[k].func( ctx, la[k].target, tmp );
+	 tmp += la[k].sz;
+      }
+	 
+      /* Fire the vertex
+       */
+      la[0].func( ctx, VERT_ATTRIB_POS, data );
+      data = tmp;
+   }
+
+   if (prim->end) {
+      CALL_End(GET_DISPATCH(), ());
+   }
+}
+
+/* Primitives generated by DrawArrays/DrawElements/Rectf may be
+ * caught here.  If there is no primitive in progress, execute them
+ * normally, otherwise need to track and discard the generated
+ * primitives.
+ */
+static void loopback_weak_prim( GLcontext *ctx,
+				const struct brw_draw_prim *prim )
+{
+   /* Use the prim_weak flag to ensure that if this primitive
+    * wraps, we don't mistake future vertex_lists for part of the
+    * surrounding primitive.
+    *
+    * While this flag is set, we are simply disposing of data
+    * generated by an operation now known to be a noop.
+    */
+   if (prim->begin)
+      ctx->Driver.CurrentExecPrimitive |= BRW_SAVE_PRIM_WEAK;
+   if (prim->end)
+      ctx->Driver.CurrentExecPrimitive &= ~BRW_SAVE_PRIM_WEAK;
+}
+
+
+void brw_loopback_vertex_list( GLcontext *ctx,
+			       const GLfloat *buffer,
+			       const GLubyte *attrsz,
+			       const struct brw_draw_prim *prim,
+			       GLuint prim_count,
+			       GLuint wrap_count,
+			       GLuint vertex_size)
+{
+   struct loopback_attr la[BRW_ATTRIB_MAX];
+   GLuint i, nr = 0;
+
+   for (i = 0 ; i <= BRW_ATTRIB_TEX7 ; i++) {
+      if (attrsz[i]) {
+	 la[nr].target = i;
+	 la[nr].sz = attrsz[i];
+	 la[nr].func = vert_attrfunc[attrsz[i]-1];
+	 nr++;
+      }
+   }
+
+   for (i = BRW_ATTRIB_MAT_FRONT_AMBIENT ; 
+	i <= BRW_ATTRIB_MAT_BACK_INDEXES ; 
+	i++) {
+      if (attrsz[i]) {
+	 la[nr].target = i;
+	 la[nr].sz = attrsz[i];
+	 la[nr].func = mat_attrfunc[attrsz[i]-1];
+	 nr++;
+      }
+   }
+
+   if (attrsz[BRW_ATTRIB_EDGEFLAG]) {
+      la[nr].target = BRW_ATTRIB_EDGEFLAG;
+      la[nr].sz = attrsz[BRW_ATTRIB_EDGEFLAG];
+      la[nr].func = edgeflag_attr1fv;
+      nr++;
+   }
+
+   if (attrsz[BRW_ATTRIB_INDEX]) {
+      la[nr].target = BRW_ATTRIB_INDEX;
+      la[nr].sz = attrsz[BRW_ATTRIB_INDEX];
+      la[nr].func = index_attr1fv;
+      nr++;
+   }
+
+   /* XXX ARB vertex attribs */
+
+   for (i = 0 ; i < prim_count ; i++) {
+      if ((prim[i].mode & BRW_SAVE_PRIM_WEAK) &&
+	  (ctx->Driver.CurrentExecPrimitive != PRIM_OUTSIDE_BEGIN_END))
+      {
+	 loopback_weak_prim( ctx, &prim[i] );
+      }
+      else
+      {
+	 loopback_prim( ctx, buffer, &prim[i], wrap_count, vertex_size, la, nr );
+      }
+   }
+}
+
+
+
+
+
+
+
+
+static GLboolean do_check_fallback(struct brw_context *brw)
+{
+   GLcontext *ctx = &brw->intel.ctx;
+   GLuint i;
+   
+   /* BRW_NEW_METAOPS
+    */
+   if (brw->metaops.active)
+      return GL_FALSE;
+
+   if (brw->intel.no_rast)
+      return GL_TRUE;
+   
+   /* _NEW_BUFFERS
+    */
+   if (ctx->DrawBuffer->_ColorDrawBufferMask[0] != BUFFER_BIT_FRONT_LEFT &&
+       ctx->DrawBuffer->_ColorDrawBufferMask[0] != BUFFER_BIT_BACK_LEFT)
+      return GL_TRUE;
+
+   /* _NEW_RENDERMODE
+    *
+    * XXX: need to save/restore RenderMode in metaops state, or
+    * somehow move to a new attribs pointer:
+    */
+   if (ctx->RenderMode != GL_RENDER)
+      return GL_TRUE;
+
+   /* _NEW_TEXTURE:
+    */
+   for (i = 0; i < BRW_MAX_TEX_UNIT; i++) {
+      struct gl_texture_unit *texUnit = &brw->attribs.Texture->Unit[i];
+      if (texUnit->_ReallyEnabled) {
+	 struct intel_texture_object *intelObj = intel_texture_object(texUnit->_Current);
+	 struct gl_texture_image *texImage = intelObj->base.Image[0][intelObj->firstLevel];
+	 if (texImage->Border)
+	    return GL_TRUE;
+      }
+   }
+   
+   /* _NEW_STENCIL 
+    */
+   if (brw->attribs.Stencil->Enabled && 
+       !brw->intel.hw_stencil) {
+      return GL_TRUE;
+   }
+
+
+   return GL_FALSE;
+}
+
+static void check_fallback(struct brw_context *brw)
+{
+   brw->intel.Fallback = do_check_fallback(brw);
+}
+
+const struct brw_tracked_state brw_check_fallback = {
+   .dirty = {
+      .mesa = _NEW_BUFFERS | _NEW_RENDERMODE | _NEW_TEXTURE | _NEW_STENCIL,
+      .brw  = BRW_NEW_METAOPS,
+      .cache = 0
+   },
+   .update = check_fallback
+};
+
+
+
+
+/* If there is a fallback, fallback to software rasterization and
+ * transformation together.  There is never a requirement to have
+ * software t&l but hardware rasterization.
+ * 
+ * Further, all fallbacks are based on GL state, not on eg. primitive
+ * or vertex data.
+ */
+
+static void do_fallback( struct brw_context *brw,
+			 GLboolean fallback )
+{
+   GLcontext *ctx = &brw->intel.ctx;
+
+   /* flush:
+    */
+   ctx->Driver.Flush( ctx );
+
+   if (fallback) {
+      _swsetup_Wakeup( ctx );
+      _tnl_wakeup_exec( ctx );	
+
+      /* Need this because tnl_wakeup_exec does too much: 
+       */
+      brw_save_wakeup(ctx);
+      brw_save_fallback(ctx, GL_TRUE);
+   }
+   else {
+      /* Flush vertices and copy-to-current:
+       */
+      FLUSH_CURRENT(ctx, 0); 
+
+      _swrast_flush( ctx );
+
+      brw_exec_wakeup(ctx);
+
+      /* Need this because tnl_wakeup_exec does too much: 
+       */
+      brw_save_wakeup(ctx);
+      brw_save_fallback(ctx, GL_FALSE);	 
+   }
+}
+
+
+void brw_fallback( GLcontext *ctx )
+{
+   struct brw_context *brw = brw_context(ctx);
+   do_fallback(brw, 1);
+}
+
+
+void brw_unfallback( GLcontext *ctx )
+{
+   struct brw_context *brw = brw_context(ctx);
+   do_fallback(brw, 0);
+}
+
+/* Not used:
+ */
+void intelFallback( struct intel_context *intel, GLuint bit, GLboolean mode )
+{
+}
+
+
+