svga: pass fragment shader to draw module

If we use the draw-module for wide point/line/etc drawing we'll need
a fragment shader too (like we pass in the vertex shader).

This fixes sprite point rendering when forcing the swtnl path.

Reviewed-by: José Fonseca <jfonseca@vmware.com>

src/gallium/drivers/svga/svga_context.h

@@ -45,6 +45,7 @@
 #define SVGA_MAX_POINTSIZE 80.0
 
 struct draw_vertex_shader;
+struct draw_fragment_shader;
 struct svga_shader_result;
 struct SVGACmdMemory;
 struct util_bitmask;
@@ -68,6 +69,8 @@ struct svga_fragment_shader
 {
    struct svga_shader base;
 
+   struct draw_fragment_shader *draw_shader;
+
    /** Mask of which generic varying variables are read by this shader */
    unsigned generic_inputs;
    /** Table mapping original TGSI generic indexes to low integers */

src/gallium/drivers/svga/svga_pipe_fs.c

@@ -28,6 +28,7 @@
 #include "util/u_memory.h"
 #include "util/u_bitmask.h"
 #include "tgsi/tgsi_parse.h"
+#include "draw/draw_context.h"
 
 #include "svga_context.h"
 #include "svga_tgsi.h"
@@ -63,6 +64,8 @@ svga_create_fs_state(struct pipe_context *pipe,
 
    svga_remap_generics(fs->generic_inputs, fs->generic_remap_table);
 
+   fs->draw_shader = draw_create_fragment_shader(svga->swtnl.draw, templ);
+
    if (SVGA_DEBUG & DEBUG_TGSI || 0) {
       debug_printf("%s id: %u, inputs: %u, outputs: %u\n",
                    __FUNCTION__, fs->base.id,
@@ -92,6 +95,8 @@ void svga_delete_fs_state(struct pipe_context *pipe, void *shader)
 
    svga_hwtnl_flush_retry( svga );
 
+   draw_delete_fragment_shader(svga->swtnl.draw, fs->draw_shader);
+
    for (result = fs->base.results; result; result = tmp ) {
       tmp = result->next;
 

src/gallium/drivers/svga/svga_swtnl_state.c

@@ -93,6 +93,10 @@ update_swtnl_draw( struct svga_context *svga,
       draw_bind_vertex_shader(svga->swtnl.draw,
                               svga->curr.vs->draw_shader);
 
+   if (dirty & SVGA_NEW_FS) 
+      draw_bind_fragment_shader(svga->swtnl.draw,
+                                svga->curr.fs->draw_shader);
+
    if (dirty & SVGA_NEW_VBUFFER)
       draw_set_vertex_buffers(svga->swtnl.draw, 
                               svga->curr.num_vertex_buffers,