(Andreas Stenglein) fix projected textures with swtcl, they need the w coordinate of the vertex (bugzilla #1648)

2 files changed, 11 insertions, 2 deletions

diff --git a/src/mesa/drivers/dri/r200/r200_swtcl.c b/src/mesa/drivers/dri/r200/r200_swtcl.c
index 43f83650781..141bcde1617 100644
--- a/src/mesa/drivers/dri/r200/r200_swtcl.c
+++ b/src/mesa/drivers/dri/r200/r200_swtcl.c
@@ -106,7 +106,7 @@ static void r200SetVertexFormat( GLcontext *ctx )
    /* EMIT_ATTR's must be in order as they tell t_vertex.c how to
     * build up a hardware vertex.
     */
-   if ( !rmesa->swtcl.needproj ) {
+   if ( !rmesa->swtcl.needproj || (index & _TNL_BITS_TEX_ANY)) { /* need w coord for projected textures */
       EMIT_ATTR( _TNL_ATTRIB_POS, EMIT_4F, R200_VTX_XY | R200_VTX_Z0 | R200_VTX_W0 );
       offset = 4;
    }
@@ -230,11 +230,18 @@ void r200ChooseVertexState( GLcontext *ctx )
 	|| (ctx->_TriangleCaps & (DD_TRI_LIGHT_TWOSIDE|DD_TRI_UNFILLED))) {
       rmesa->swtcl.needproj = GL_TRUE;
       vte |= R200_VTX_XY_FMT | R200_VTX_Z_FMT;
-      vap |= R200_VAP_FORCE_W_TO_ONE;
+      vte &= ~R200_VTX_W0_FMT;
+      if (tnl->render_inputs & _TNL_BITS_TEX_ANY) {
+	 vap &= ~R200_VAP_FORCE_W_TO_ONE;
+      }
+      else {
+	 vap |= R200_VAP_FORCE_W_TO_ONE;
+      }
    }
    else {
       rmesa->swtcl.needproj = GL_FALSE;
       vte &= ~(R200_VTX_XY_FMT | R200_VTX_Z_FMT);
+      vte |= R200_VTX_W0_FMT;
       vap &= ~R200_VAP_FORCE_W_TO_ONE;
    }
 
@@ -751,6 +758,7 @@ r200PointsBitmap( GLcontext *ctx, GLint px, GLint py,
       GLuint vap = rmesa->hw.vap.cmd[VAP_SE_VAP_CNTL];
 
       vte &= ~(R200_VTX_XY_FMT | R200_VTX_Z_FMT);
+      vte |= R200_VTX_W0_FMT;
       vap &= ~R200_VAP_FORCE_W_TO_ONE;
 
       rmesa->swtcl.vertex_size = 5;
diff --git a/src/mesa/drivers/dri/r200/r200_tcl.c b/src/mesa/drivers/dri/r200/r200_tcl.c
index 04c40d47c2e..0e7c71054e7 100644
--- a/src/mesa/drivers/dri/r200/r200_tcl.c
+++ b/src/mesa/drivers/dri/r200/r200_tcl.c
@@ -560,6 +560,7 @@ static void transition_to_hwtnl( GLcontext *ctx )
    
    R200_STATECHANGE( rmesa, vte );
    rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] &= ~(R200_VTX_XY_FMT|R200_VTX_Z_FMT);
+   rmesa->hw.vte.cmd[VTE_SE_VTE_CNTL] |= R200_VTX_W0_FMT;
 
    if (R200_DEBUG & DEBUG_FALLBACKS) 
       fprintf(stderr, "R200 end tcl fallback\n");