mesa/get: Add TYPE_UINT for casting through a GLuint.

The "State Tables" section of the OpenGL specification lists many values
as belonging to Z+ (non-negative integers), not Z (all integers).

For ordinary glGetInteger queries, this doesn't matter.  However, when
accessing Z+ values via glGetFloat or glGetInteger64, we need to treat
the source value as an unsigned value.  Otherwise, we'll produce a
negative number when bit 31 is set.

This commit merely adds the plumbing.  It doesn't convert any values.

v2: Gotta catch 'em all (add missing cases caught by Ilia)

Signed-off-by: Kenneth Graunke <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>

1 files changed, 80 insertions, 0 deletions

diff --git a/src/mesa/main/get.c b/src/mesa/main/get.c
index 12f937a01a9..10b40d405d2 100644
--- a/src/mesa/main/get.c
+++ b/src/mesa/main/get.c
@@ -95,6 +95,10 @@ enum value_type {
    TYPE_INT_3,
    TYPE_INT_4,
    TYPE_INT_N,
+   TYPE_UINT,
+   TYPE_UINT_2,
+   TYPE_UINT_3,
+   TYPE_UINT_4,
    TYPE_INT64,
    TYPE_ENUM,
    TYPE_ENUM_2,
@@ -205,6 +209,7 @@ union value {
 #define CONTEXT_INT(field) CONTEXT_FIELD(field, TYPE_INT)
 #define CONTEXT_INT2(field) CONTEXT_FIELD(field, TYPE_INT_2)
 #define CONTEXT_INT64(field) CONTEXT_FIELD(field, TYPE_INT64)
+#define CONTEXT_UINT(field) CONTEXT_FIELD(field, TYPE_UINT)
 #define CONTEXT_ENUM(field) CONTEXT_FIELD(field, TYPE_ENUM)
 #define CONTEXT_ENUM2(field) CONTEXT_FIELD(field, TYPE_ENUM_2)
 #define CONTEXT_BOOL(field) CONTEXT_FIELD(field, TYPE_BOOLEAN)
@@ -1458,13 +1463,17 @@ _mesa_GetBooleanv(GLenum pname, GLboolean *params)
       break;
 
    case TYPE_INT_4:
+   case TYPE_UINT_4:
       params[3] = INT_TO_BOOLEAN(((GLint *) p)[3]);
    case TYPE_INT_3:
+   case TYPE_UINT_3:
       params[2] = INT_TO_BOOLEAN(((GLint *) p)[2]);
    case TYPE_INT_2:
+   case TYPE_UINT_2:
    case TYPE_ENUM_2:
       params[1] = INT_TO_BOOLEAN(((GLint *) p)[1]);
    case TYPE_INT:
+   case TYPE_UINT:
    case TYPE_ENUM:
       params[0] = INT_TO_BOOLEAN(((GLint *) p)[0]);
       break;
@@ -1567,6 +1576,16 @@ _mesa_GetFloatv(GLenum pname, GLfloat *params)
 	 params[i] = (GLfloat) v.value_int_n.ints[i];
       break;
 
+   case TYPE_UINT_4:
+      params[3] = (GLfloat) (((GLuint *) p)[3]);
+   case TYPE_UINT_3:
+      params[2] = (GLfloat) (((GLuint *) p)[2]);
+   case TYPE_UINT_2:
+      params[1] = (GLfloat) (((GLuint *) p)[1]);
+   case TYPE_UINT:
+      params[0] = (GLfloat) (((GLuint *) p)[0]);
+      break;
+
    case TYPE_INT64:
       params[0] = (GLfloat) (((GLint64 *) p)[0]);
       break;
@@ -1650,13 +1669,17 @@ _mesa_GetIntegerv(GLenum pname, GLint *params)
       break;
 
    case TYPE_INT_4:
+   case TYPE_UINT_4:
       params[3] = ((GLint *) p)[3];
    case TYPE_INT_3:
+   case TYPE_UINT_3:
       params[2] = ((GLint *) p)[2];
    case TYPE_INT_2:
+   case TYPE_UINT_2:
    case TYPE_ENUM_2:
       params[1] = ((GLint *) p)[1];
    case TYPE_INT:
+   case TYPE_UINT:
    case TYPE_ENUM:
       params[0] = ((GLint *) p)[0];
       break;
@@ -1765,6 +1788,16 @@ _mesa_GetInteger64v(GLenum pname, GLint64 *params)
 	 params[i] = INT_TO_BOOLEAN(v.value_int_n.ints[i]);
       break;
 
+   case TYPE_UINT_4:
+      params[3] = ((GLuint *) p)[3];
+   case TYPE_UINT_3:
+      params[2] = ((GLuint *) p)[2];
+   case TYPE_UINT_2:
+      params[1] = ((GLuint *) p)[1];
+   case TYPE_UINT:
+      params[0] = ((GLuint *) p)[0];
+      break;
+
    case TYPE_INT64:
       params[0] = ((GLint64 *) p)[0];
       break;
@@ -1858,6 +1891,16 @@ _mesa_GetDoublev(GLenum pname, GLdouble *params)
 	 params[i] = v.value_int_n.ints[i];
       break;
 
+   case TYPE_UINT_4:
+      params[3] = ((GLuint *) p)[3];
+   case TYPE_UINT_3:
+      params[2] = ((GLuint *) p)[2];
+   case TYPE_UINT_2:
+      params[1] = ((GLuint *) p)[1];
+   case TYPE_UINT:
+      params[0] = ((GLuint *) p)[0];
+      break;
+
    case TYPE_INT64:
       params[0] = (GLdouble) (((GLint64 *) p)[0]);
       break;
@@ -2334,9 +2377,11 @@ _mesa_GetBooleani_v( GLenum pname, GLuint index, GLboolean *params )
 
    switch (type) {
    case TYPE_INT:
+   case TYPE_UINT:
       params[0] = INT_TO_BOOLEAN(v.value_int);
       break;
    case TYPE_INT_4:
+   case TYPE_UINT_4:
       params[0] = INT_TO_BOOLEAN(v.value_int_4[0]);
       params[1] = INT_TO_BOOLEAN(v.value_int_4[1]);
       params[2] = INT_TO_BOOLEAN(v.value_int_4[2]);
@@ -2379,9 +2424,11 @@ _mesa_GetIntegeri_v( GLenum pname, GLuint index, GLint *params )
       break;
 
    case TYPE_INT:
+   case TYPE_UINT:
       params[0] = v.value_int;
       break;
    case TYPE_INT_4:
+   case TYPE_UINT_4:
       params[0] = v.value_int_4[0];
       params[1] = v.value_int_4[1];
       params[2] = v.value_int_4[2];
@@ -2412,6 +2459,15 @@ _mesa_GetInteger64i_v( GLenum pname, GLuint index, GLint64 *params )
       params[2] = v.value_int_4[2];
       params[3] = v.value_int_4[3];
       break;
+   case TYPE_UINT:
+      params[0] = (GLuint) v.value_int;
+      break;
+   case TYPE_UINT_4:
+      params[0] = (GLuint) v.value_int_4[0];
+      params[1] = (GLuint) v.value_int_4[1];
+      params[2] = (GLuint) v.value_int_4[2];
+      params[3] = (GLuint) v.value_int_4[3];
+      break;
    case TYPE_INT64:
       params[0] = v.value_int64;
       break;
@@ -2467,6 +2523,16 @@ _mesa_GetFloati_v(GLenum pname, GLuint index, GLfloat *params)
 	 params[i] = (GLfloat) v.value_int_n.ints[i];
       break;
 
+   case TYPE_UINT_4:
+      params[3] = (GLfloat) ((GLuint) v.value_int_4[3]);
+   case TYPE_UINT_3:
+      params[2] = (GLfloat) ((GLuint) v.value_int_4[2]);
+   case TYPE_UINT_2:
+      params[1] = (GLfloat) ((GLuint) v.value_int_4[1]);
+   case TYPE_UINT:
+      params[0] = (GLfloat) ((GLuint) v.value_int_4[0]);
+      break;
+
    case TYPE_INT64:
       params[0] = (GLfloat) v.value_int64;
       break;
@@ -2539,6 +2605,16 @@ _mesa_GetDoublei_v(GLenum pname, GLuint index, GLdouble *params)
 	 params[i] = (GLdouble) v.value_int_n.ints[i];
       break;
 
+   case TYPE_UINT_4:
+      params[3] = (GLdouble) ((GLuint) v.value_int_4[3]);
+   case TYPE_UINT_3:
+      params[2] = (GLdouble) ((GLuint) v.value_int_4[2]);
+   case TYPE_UINT_2:
+      params[1] = (GLdouble) ((GLuint) v.value_int_4[1]);
+   case TYPE_UINT:
+      params[0] = (GLdouble) ((GLuint) v.value_int_4[0]);
+      break;
+
    case TYPE_INT64:
       params[0] = (GLdouble) v.value_int64;
       break;
@@ -2602,13 +2678,17 @@ _mesa_GetFixedv(GLenum pname, GLfixed *params)
       break;
 
    case TYPE_INT_4:
+   case TYPE_UINT_4:
       params[3] = INT_TO_FIXED(((GLint *) p)[3]);
    case TYPE_INT_3:
+   case TYPE_UINT_3:
       params[2] = INT_TO_FIXED(((GLint *) p)[2]);
    case TYPE_INT_2:
+   case TYPE_UINT_2:
    case TYPE_ENUM_2:
       params[1] = INT_TO_FIXED(((GLint *) p)[1]);
    case TYPE_INT:
+   case TYPE_UINT:
    case TYPE_ENUM:
       params[0] = INT_TO_FIXED(((GLint *) p)[0]);
       break;