Merge pull request #48 from errcw/str-uint8

Use uint8 for GLchar and GLcharARB. Fix #47.

conversions.tmpl

@@ -52,12 +52,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-compatibility/3.2/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-compatibility/3.3/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-compatibility/4.1/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-compatibility/4.4/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-compatibility/4.5/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a

gl-core/3.2/gl/conversions.go

@@ -50,12 +50,12 @@ func PtrOffset(offset int) unsafe.Pointer {
 // Str takes a null-terminated Go string and returns its GL-compatible address.
 // This function reaches into Go string storage in an unsafe way so the caller
 // must ensure the string is not garbage collected.
-func Str(str string) *int8 {
+func Str(str string) *uint8 {
 	if !strings.HasSuffix(str, "\x00") {
 		log.Fatal("str argument missing null terminator", str)
 	}
 	header := (*reflect.StringHeader)(unsafe.Pointer(&str))
-	return (*int8)(unsafe.Pointer(header.Data))
+	return (*uint8)(unsafe.Pointer(header.Data))
 }
 
 // GoStr takes a null-terminated string returned by OpenGL and constructs a