mesa: Eliminate parameters to dd_function_table::DepthRange

No driver uses them.  They will just be annoying in future patches.

Signed-off-by: Ian Romanick <ian.d.romanick@intel.com>
Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i915/i830_state.c

@@ -453,7 +453,7 @@ i830DepthMask(struct gl_context * ctx, GLboolean flag)
 
 /** Called from ctx->Driver.DepthRange() */
 static void
-i830DepthRange(struct gl_context * ctx, GLclampd nearval, GLclampd farval)
+i830DepthRange(struct gl_context *ctx)
 {
    intelCalcViewport(ctx);
 }

src/mesa/drivers/dri/i915/i915_state.c

@@ -426,7 +426,7 @@ intelCalcViewport(struct gl_context * ctx)
 
 /** Called from ctx->Driver.DepthRange() */
 static void
-i915DepthRange(struct gl_context * ctx, GLclampd nearval, GLclampd farval)
+i915DepthRange(struct gl_context *ctx)
 {
    intelCalcViewport(ctx);
 }

src/mesa/drivers/dri/r200/r200_state.c

@@ -1611,8 +1611,7 @@ static void r200Viewport(struct gl_context *ctx)
    radeon_viewport(ctx);
 }
 
-static void r200DepthRange( struct gl_context *ctx, GLclampd nearval,
-			      GLclampd farval )
+static void r200DepthRange(struct gl_context *ctx)
 {
    r200UpdateWindow( ctx );
 }

src/mesa/drivers/dri/radeon/radeon_common.c

@@ -325,9 +325,7 @@ void radeon_draw_buffer(struct gl_context *ctx, struct gl_framebuffer *fb)
 	radeon->NewGLState |= _NEW_SCISSOR;
 
 	if (ctx->Driver.DepthRange)
-		ctx->Driver.DepthRange(ctx,
-				       ctx->Viewport.Near,
-				       ctx->Viewport.Far);
+		ctx->Driver.DepthRange(ctx);
 
 	/* Update culling direction which changes depending on the
 	 * orientation of the buffer:

src/mesa/drivers/dri/radeon/radeon_state.c

@@ -1394,8 +1394,7 @@ static void radeonViewport(struct gl_context *ctx)
    radeon_viewport(ctx);
 }
 
-static void radeonDepthRange( struct gl_context *ctx, GLclampd nearval,
-			      GLclampd farval )
+static void radeonDepthRange(struct gl_context *ctx)
 {
    radeonUpdateWindow( ctx );
 }

src/mesa/main/dd.h

@@ -485,7 +485,7 @@ struct dd_function_table {
    /** Enable or disable writing into the depth buffer */
    void (*DepthMask)(struct gl_context *ctx, GLboolean flag);
    /** Specify mapping of depth values from NDC to window coordinates */
-   void (*DepthRange)(struct gl_context *ctx, GLclampd nearval, GLclampd farval);
+   void (*DepthRange)(struct gl_context *ctx);
    /** Specify the current buffer for writing */
    void (*DrawBuffer)( struct gl_context *ctx, GLenum buffer );
    /** Specify the buffers for writing for fragment programs*/

src/mesa/main/viewport.c

@@ -143,7 +143,7 @@ _mesa_DepthRange(GLclampd nearval, GLclampd farval)
 #endif
 
    if (ctx->Driver.DepthRange) {
-      ctx->Driver.DepthRange(ctx, nearval, farval);
+      ctx->Driver.DepthRange(ctx);
    }
 }