4 files changed, 48 insertions, 12 deletions
diff --git a/src/mesa/drivers/dri/i915/i915_context.c b/src/mesa/drivers/dri/i915/i915_context.c
index 36563ef6f3f..dc322929fbd 100644
--- a/src/mesa/drivers/dri/i915/i915_context.c
+++ b/src/mesa/drivers/dri/i915/i915_context.c
@@ -76,6 +76,8 @@ i915InvalidateState(struct gl_context * ctx, GLuint new_state)
        i915_update_provoking_vertex(ctx);
    if (new_state & (_NEW_PROGRAM | _NEW_PROGRAM_CONSTANTS))
        i915_update_program(ctx);
+   if (new_state & (_NEW_PROGRAM | _NEW_POINT))
+       i915_update_sprite_point_enable(ctx);
 }
 
 
diff --git a/src/mesa/drivers/dri/i915/i915_context.h b/src/mesa/drivers/dri/i915/i915_context.h
index 81671371151..70374658ec8 100644
--- a/src/mesa/drivers/dri/i915/i915_context.h
+++ b/src/mesa/drivers/dri/i915/i915_context.h
@@ -40,6 +40,7 @@
 #define I915_FALLBACK_POINT_SMOOTH	 0x80000
 #define I915_FALLBACK_POINT_SPRITE_COORD_ORIGIN	 0x100000
 #define I915_FALLBACK_DRAW_OFFSET	 0x200000
+#define I915_FALLBACK_COORD_REPLACE	 0x400000
 
 #define I915_UPLOAD_CTX              0x1
 #define I915_UPLOAD_BUFFERS          0x2
@@ -338,6 +339,7 @@ extern void i915InitStateFunctions(struct dd_function_table *functions);
 extern void i915InitState(struct i915_context *i915);
 extern void i915_update_stencil(struct gl_context * ctx);
 extern void i915_update_provoking_vertex(struct gl_context *ctx);
+extern void i915_update_sprite_point_enable(struct gl_context *ctx);
 
 
 /*======================================================================
diff --git a/src/mesa/drivers/dri/i915/i915_state.c b/src/mesa/drivers/dri/i915/i915_state.c
index 756001ff6e6..94c7327830b 100644
--- a/src/mesa/drivers/dri/i915/i915_state.c
+++ b/src/mesa/drivers/dri/i915/i915_state.c
@@ -652,6 +652,48 @@ i915PointParameterfv(struct gl_context * ctx, GLenum pname, const GLfloat *param
    }
 }
 
+void
+i915_update_sprite_point_enable(struct gl_context *ctx)
+{
+   struct intel_context *intel = intel_context(ctx);
+   /* _NEW_PROGRAM */
+   struct i915_fragment_program *p =
+      (struct i915_fragment_program *) ctx->FragmentProgram._Current;
+   const GLbitfield64 inputsRead = p->FragProg.Base.InputsRead;
+   struct i915_context *i915 = i915_context(ctx);
+   GLuint s4 = i915->state.Ctx[I915_CTXREG_LIS4] & ~S4_VFMT_MASK;
+   int i;
+   GLuint coord_replace_bits = 0x0;
+   GLuint tex_coord_unit_bits = 0x0;
+
+   for (i = 0; i < ctx->Const.MaxTextureCoordUnits; i++) {
+      /* _NEW_POINT */
+      if (ctx->Point.CoordReplace[i] && ctx->Point.PointSprite)
+         coord_replace_bits |= (1 << i);
+      if (inputsRead & FRAG_BIT_TEX(i))
+         tex_coord_unit_bits |= (1 << i);
+   }
+
+   /*
+    * Here we can't enable the SPRITE_POINT_ENABLE bit when the mis-match
+    * of tex_coord_unit_bits and coord_replace_bits, or this will make all
+    * the other non-point-sprite coords(like varying inputs, as we now use
+    * tex coord to implement varying inputs) be replaced to value (0, 0)-(1, 1).
+    *
+    * Thus, do fallback when needed.
+    */
+   FALLBACK(intel, I915_FALLBACK_COORD_REPLACE,
+            coord_replace_bits && coord_replace_bits != tex_coord_unit_bits);
+
+   s4 &= ~S4_SPRITE_POINT_ENABLE;
+   s4 |= (coord_replace_bits && coord_replace_bits == tex_coord_unit_bits) ?
+         S4_SPRITE_POINT_ENABLE : 0;
+   if (s4 != i915->state.Ctx[I915_CTXREG_LIS4]) {
+      i915->state.Ctx[I915_CTXREG_LIS4] = s4;
+      I915_STATECHANGE(i915, I915_UPLOAD_CTX);
+   }
+}
+
 
 /* =============================================================
  * Color masks
@@ -869,18 +911,7 @@ i915Enable(struct gl_context * ctx, GLenum cap, GLboolean state)
       break;
 
    case GL_POINT_SPRITE:
-      /* This state change is handled in i915_reduced_primitive_state because
-       * the hardware bit should only be set when rendering points.
-       */
-	 dw = i915->state.Ctx[I915_CTXREG_LIS4];
-      if (state)
-	 dw |= S4_SPRITE_POINT_ENABLE;
-      else
-	 dw &= ~S4_SPRITE_POINT_ENABLE;
-      if (dw != i915->state.Ctx[I915_CTXREG_LIS4]) {
-	 i915->state.Ctx[I915_CTXREG_LIS4] = dw;
-	 I915_STATECHANGE(i915, I915_UPLOAD_CTX);
-      }
+      /* Handle it at i915_update_sprite_point_enable () */
       break;
 
    case GL_POINT_SMOOTH:
diff --git a/src/mesa/drivers/dri/i915/intel_tris.c b/src/mesa/drivers/dri/i915/intel_tris.c
index c802d7231d0..cf67d743004 100644
--- a/src/mesa/drivers/dri/i915/intel_tris.c
+++ b/src/mesa/drivers/dri/i915/intel_tris.c
@@ -1188,6 +1188,7 @@ static char *fallbackStrings[] = {
    [19] = "Smooth point",
    [20] = "point sprite coord origin",
    [21] = "depth/color drawing offset",
+   [22] = "coord replace(SPRITE POINT ENABLE)",
 };