Merge branch 'outputswritten64'

Add a GLbitfield64 type and several macros to operate on 64-bit
fields.  The OutputsWritten field of gl_program is changed to use that
type.  This results in a fair amount of fallout in drivers that use
programs.

No changes are strictly necessary at this point as all bits used are
below the 32-bit boundary.  Fairly soon several bits will be added for
clip distances written by a vertex shader.  This will cause several
bits used for varyings to be pushed above the 32-bit boundary.  This
will affect any drivers that support GLSL.

At this point, only the i965 driver has been modified to support this
eventuality.

I did this as a "squash" merge.  There were several places through the
outputswritten64 branch where things were broken.  I foresee this
causing difficulties later for bisecting.  The history is still
available in the branch.

Conflicts:
	src/mesa/drivers/dri/i965/brw_wm.h

5 files changed, 34 insertions, 7 deletions

diff --git a/src/mesa/main/config.h b/src/mesa/main/config.h
index 8a09efdb53..c5048970cc 100644
--- a/src/mesa/main/config.h
+++ b/src/mesa/main/config.h
@@ -205,7 +205,7 @@
 #define MAX_VARYING                    16    /**< number of float[4] vectors */
 #define MAX_SAMPLERS                   MAX_TEXTURE_IMAGE_UNITS
 #define MAX_PROGRAM_INPUTS             32
-#define MAX_PROGRAM_OUTPUTS            32
+#define MAX_PROGRAM_OUTPUTS            64
 /*@}*/
 
 /** For GL_ARB_vertex_program */
diff --git a/src/mesa/main/context.c b/src/mesa/main/context.c
index 101d3c6b67..b5bf46718f 100644
--- a/src/mesa/main/context.c
+++ b/src/mesa/main/context.c
@@ -601,9 +601,11 @@ _mesa_init_constants(GLcontext *ctx)
    ASSERT(MAX_NV_VERTEX_PROGRAM_INPUTS <= VERT_ATTRIB_MAX);
    ASSERT(MAX_NV_VERTEX_PROGRAM_OUTPUTS <= VERT_RESULT_MAX);
 
-   /* check that we don't exceed various 32-bit bitfields */
-   ASSERT(VERT_RESULT_MAX <= 32);
-   ASSERT(FRAG_ATTRIB_MAX <= 32);
+   /* check that we don't exceed the size of various bitfields */
+   ASSERT(VERT_RESULT_MAX <=
+	  (8 * sizeof(ctx->VertexProgram._Current->Base.OutputsWritten)));
+   ASSERT(FRAG_ATTRIB_MAX <=
+	  (8 * sizeof(ctx->FragmentProgram._Current->Base.InputsRead)));
 }
 
 
diff --git a/src/mesa/main/ffvertex_prog.c b/src/mesa/main/ffvertex_prog.c
index 356476e35a..fe2416d894 100644
--- a/src/mesa/main/ffvertex_prog.c
+++ b/src/mesa/main/ffvertex_prog.c
@@ -438,7 +438,7 @@ static struct ureg register_input( struct tnl_program *p, GLuint input )
  */
 static struct ureg register_output( struct tnl_program *p, GLuint output )
 {
-   p->program->Base.OutputsWritten |= (1<<output);
+   p->program->Base.OutputsWritten |= BITFIELD64_BIT(output);
    return make_ureg(PROGRAM_OUTPUT, output);
 }
 
diff --git a/src/mesa/main/mtypes.h b/src/mesa/main/mtypes.h
index 34c51b5442..881d233ca3 100644
--- a/src/mesa/main/mtypes.h
+++ b/src/mesa/main/mtypes.h
@@ -79,6 +79,31 @@
 
 
 /**
+ * \name 64-bit extension of GLbitfield.
+ */
+/*@{*/
+typedef GLuint64 GLbitfield64;
+
+#define BITFIELD64_ONE         1ULL
+#define BITFIELD64_ALLONES     ~0ULL
+
+/** Set a single bit */
+#define BITFIELD64_BIT(b)      (BITFIELD64_ONE << (b))
+
+/** Set a mask of the least significant \c b bits */
+#define BITFIELD64_MASK(b)     (((b) >= 64) ? BITFIELD64_ALLONES : \
+				(BITFIELD64_BIT(b) - 1))
+
+/**
+ * Set all bits from l (low bit) to h (high bit), inclusive.
+ *
+ * \note \C BITFIELD_64_RANGE(0, 63) return 64 set bits.
+ */
+#define BITFIELD64_RANGE(l, h) (BITFIELD64_MASK((h) + 1) & ~BITFIELD64_MASK(l))
+/*@}*/
+
+
+/**
  * \name Some forward type declarations
  */
 /*@{*/
@@ -1670,7 +1695,7 @@ struct gl_program
    struct prog_instruction *Instructions;
 
    GLbitfield InputsRead;     /**< Bitmask of which input regs are read */
-   GLbitfield OutputsWritten; /**< Bitmask of which output regs are written to */
+   GLbitfield64 OutputsWritten; /**< Bitmask of which output regs are written */
    GLbitfield InputFlags[MAX_PROGRAM_INPUTS];   /**< PROG_PARAM_BIT_x flags */
    GLbitfield OutputFlags[MAX_PROGRAM_OUTPUTS]; /**< PROG_PARAM_BIT_x flags */
    GLbitfield TexturesUsed[MAX_TEXTURE_UNITS];  /**< TEXTURE_x_BIT bitmask */
diff --git a/src/mesa/main/texenvprogram.c b/src/mesa/main/texenvprogram.c
index d7e77e759e..f439d4addb 100644
--- a/src/mesa/main/texenvprogram.c
+++ b/src/mesa/main/texenvprogram.c
@@ -367,7 +367,7 @@ static GLbitfield get_fp_input_mask( GLcontext *ctx )
    else {
       /* calculate from vp->outputs */
       struct gl_vertex_program *vprog;
-      GLbitfield vp_outputs;
+      GLbitfield64 vp_outputs;
 
       /* Choose GLSL vertex shader over ARB vertex program.  Need this
        * since vertex shader state validation comes after fragment state