svga: silence some MSVC signed/unsigned comparison warnings

src/gallium/drivers/svga/svga_draw.c

@@ -63,7 +63,7 @@ fail:
 
 void svga_hwtnl_destroy( struct svga_hwtnl *hwtnl )
 {
-   int i, j;
+   unsigned i, j;
 
    for (i = 0; i < PIPE_PRIM_MAX; i++) {
       for (j = 0; j < IDX_CACHE_MAX; j++) {

src/gallium/drivers/svga/svga_pipe_draw.c

@@ -59,7 +59,7 @@ svga_user_buffer_range(struct svga_context *svga,
                        unsigned instance_count)
 {
    const struct pipe_vertex_element *ve = svga->curr.velems->velem;
-   int i;
+   unsigned i;
 
    /*
     * Release old uploaded range (if not done already) and

src/gallium/drivers/svga/svga_pipe_misc.c

@@ -75,7 +75,7 @@ static void svga_set_framebuffer_state(struct pipe_context *pipe,
    struct svga_context *svga = svga_context(pipe);
    struct pipe_framebuffer_state *dst = &svga->curr.framebuffer;
    boolean propagate = FALSE;
-   int i;
+   unsigned i;
 
    dst->width = fb->width;
    dst->height = fb->height;

src/gallium/drivers/svga/svga_resource_texture.c

@@ -133,7 +133,7 @@ svga_transfer_dma(struct svga_context *svga,
       }
    }
    else {
-      unsigned y, h, srcy;
+      int y, h, srcy;
       unsigned blockheight = util_format_get_blockheight(st->base.resource->format);
       h = st->hw_nblocksy * blockheight;
       srcy = 0;

src/gallium/drivers/svga/svga_sampler_view.c

@@ -172,7 +172,8 @@ svga_validate_sampler_view(struct svga_context *svga, struct svga_sampler_view *
    struct svga_texture *tex = svga_texture(v->texture);
    unsigned numFaces;
    unsigned age = 0;
-   int i, k;
+   int i;
+   unsigned k;
 
    assert(svga);
 

src/gallium/drivers/svga/svga_state.c

@@ -190,7 +190,7 @@ svga_update_state(struct svga_context *svga, unsigned max_level)
 {
    struct svga_screen *screen = svga_screen(svga->pipe.screen);
    enum pipe_error ret = PIPE_OK;
-   int i;
+   unsigned i;
 
    /* Check for updates to bound textures.  This can't be done in an
     * atom as there is no flag which could provoke this test, and we

src/gallium/drivers/svga/svga_state_fs.c

@@ -165,7 +165,7 @@ make_fs_key(const struct svga_context *svga,
             struct svga_fragment_shader *fs,
             struct svga_fs_compile_key *key)
 {
-   int i;
+   unsigned i;
    int idx = 0;
 
    memset(key, 0, sizeof *key);

src/gallium/drivers/svga/svga_state_tss.c

@@ -37,7 +37,7 @@
 
 void svga_cleanup_tss_binding(struct svga_context *svga)
 {
-   int i;
+   unsigned i;
    unsigned count = MAX2( svga->curr.num_sampler_views,
                           svga->state.hw_draw.num_views );
 

src/gallium/drivers/svga/svga_swtnl_backend.c

@@ -177,7 +177,7 @@ svga_vbuf_submit_state( struct svga_vbuf_render *svga_render )
    struct svga_context *svga = svga_render->svga;
    SVGA3dVertexDecl vdecl[PIPE_MAX_ATTRIBS];
    enum pipe_error ret;
-   int i;
+   unsigned i;
 
    /* if the vdecl or vbuf hasn't changed do nothing */
    if (!svga->swtnl.new_vdecl)

src/gallium/drivers/svga/svga_swtnl_state.c

@@ -156,7 +156,8 @@ svga_swtnl_update_vdecl( struct svga_context *svga )
    struct svga_fragment_shader *fs = svga->curr.fs;
    int offset = 0;
    int nr_decls = 0;
-   int src, i;
+   int src;
+   unsigned i;
 
    memset(vinfo, 0, sizeof(*vinfo));
    memset(vdecl, 0, sizeof(vdecl));

src/gallium/drivers/svga/svga_tgsi_insn.c

@@ -3098,7 +3098,7 @@ static boolean emit_inverted_texcoords( struct svga_shader_emitter *emit )
 static INLINE boolean
 needs_to_create_zero( struct svga_shader_emitter *emit )
 {
-   int i;
+   unsigned i;
 
    if (emit->unit == PIPE_SHADER_FRAGMENT) {
       if (emit->key.fkey.light_twoside)