r300/compiler: use null-terminated array of transformation functions

I need to reduce the number of parameters of each compiler pass function.
This is part of a larger cleanup.

src/mesa/drivers/dri/r300/compiler/r3xx_fragprog.c

@@ -123,9 +123,10 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
 			{ &r500_transform_IF, 0 },
 			{ &radeonTransformALU, 0 },
 			{ &radeonTransformDeriv, 0 },
-			{ &radeonTransformTrigScale, 0 }
+			{ &radeonTransformTrigScale, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 4, transformations);
+		radeonLocalTransform(&c->Base, transformations);
 
 		debug_program_log(c, "after native rewrite part 1");
 
@@ -133,9 +134,10 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
 	} else {
 		struct radeon_program_transformation transformations[] = {
 			{ &radeonTransformALU, 0 },
-			{ &radeonTransformTrigSimple, 0 }
+			{ &radeonTransformTrigSimple, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 2, transformations);
+		radeonLocalTransform(&c->Base, transformations);
 
 		debug_program_log(c, "after native rewrite part 1");
 
@@ -146,11 +148,12 @@ void r3xx_compile_fragment_program(struct r300_fragment_program_compiler* c)
 	 * Remember, lowering comes last! */
 	struct radeon_program_transformation common_transformations[] = {
 		{ &radeonTransformTEX, c },
+		{ 0, 0 }
 	};
-	radeonLocalTransform(&c->Base, 1, common_transformations);
+	radeonLocalTransform(&c->Base, common_transformations);
 
 	common_transformations[0].function = &radeonTransformALU;
-	radeonLocalTransform(&c->Base, 1, common_transformations);
+	radeonLocalTransform(&c->Base, common_transformations);
 
 	if (c->Base.Error)
 		return;

src/mesa/drivers/dri/r300/compiler/r3xx_vertprog.c

@@ -1005,9 +1005,10 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler *c)
 	if (c->Base.is_r500) {
 		struct radeon_program_transformation transformations[] = {
 			{ &r300_transform_vertex_alu, 0 },
-			{ &r300_transform_trig_scale_vertex, 0 }
+			{ &r300_transform_trig_scale_vertex, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 2, transformations);
+		radeonLocalTransform(&c->Base, transformations);
 		if (c->Base.Error)
 			return;
 
@@ -1015,9 +1016,10 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler *c)
 	} else {
 		struct radeon_program_transformation transformations[] = {
 			{ &r300_transform_vertex_alu, 0 },
-			{ &radeonTransformTrigSimple, 0 }
+			{ &radeonTransformTrigSimple, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 2, transformations);
+		radeonLocalTransform(&c->Base, transformations);
 		if (c->Base.Error)
 			return;
 
@@ -1028,8 +1030,9 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler *c)
 		 */
 		struct radeon_program_transformation transformations2[] = {
 			{ &transform_nonnative_modifiers, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 1, transformations2);
+		radeonLocalTransform(&c->Base, transformations2);
 		if (c->Base.Error)
 			return;
 
@@ -1043,8 +1046,9 @@ void r3xx_compile_vertex_program(struct r300_vertex_program_compiler *c)
 		 */
 		struct radeon_program_transformation transformations[] = {
 			{ &transform_source_conflicts, 0 },
+			{ 0, 0 }
 		};
-		radeonLocalTransform(&c->Base, 1, transformations);
+		radeonLocalTransform(&c->Base, transformations);
 		if (c->Base.Error)
 			return;
 	}

src/mesa/drivers/dri/r300/compiler/radeon_program.c

@@ -49,7 +49,6 @@
  */
 void radeonLocalTransform(
 	struct radeon_compiler * c,
-	int num_transformations,
 	struct radeon_program_transformation* transformations)
 {
 	struct rc_instruction * inst = c->Program.Instructions.Next;
@@ -60,7 +59,7 @@ void radeonLocalTransform(
 
 		inst = inst->Next;
 
-		for(i = 0; i < num_transformations; ++i) {
+		for(i = 0; transformations[i].function; ++i) {
 			struct radeon_program_transformation* t = transformations + i;
 
 			if (t->function(c, current, t->userData))

src/mesa/drivers/dri/r300/compiler/radeon_program.h

@@ -216,7 +216,6 @@ struct radeon_program_transformation {
 
 void radeonLocalTransform(
 	struct radeon_compiler *c,
-	int num_transformations,
 	struct radeon_program_transformation* transformations);
 
 unsigned int rc_find_free_temporary(struct radeon_compiler * c);