i965: get outputs read from nir info

This is a step towards dropping the GLSL IR version of
do_set_program_inouts() in i965 and moving towards native nir support.

This is important because we want to eventually convert to nir and
use its optimisations passes before we can call this GLSL IR pass.

Reviewed-by: Kenneth Graunke <kenneth@whitecape.org>

src/mesa/drivers/dri/i965/brw_context.c

@@ -31,6 +31,7 @@
   */
 
 
+#include "compiler/nir/nir.h"
 #include "main/api_exec.h"
 #include "main/context.h"
 #include "main/fbobject.h"
@@ -304,7 +305,7 @@ intel_update_state(struct gl_context * ctx, GLuint new_state)
    /* Resolve color buffers for non-coherent framebuffer fetch. */
    if (!ctx->Extensions.MESA_shader_framebuffer_fetch &&
        ctx->FragmentProgram._Current &&
-       ctx->FragmentProgram._Current->Base.OutputsRead) {
+       ctx->FragmentProgram._Current->Base.nir->info.outputs_read) {
       const struct gl_framebuffer *fb = ctx->DrawBuffer;
 
       for (unsigned i = 0; i < fb->_NumColorDrawBuffers; i++) {

src/mesa/drivers/dri/i965/brw_wm_surface_state.c

@@ -1145,7 +1145,7 @@ update_renderbuffer_read_surfaces(struct brw_context *brw)
    /* BRW_NEW_FRAGMENT_PROGRAM */
    if (!ctx->Extensions.MESA_shader_framebuffer_fetch &&
        brw->fragment_program &&
-       brw->fragment_program->Base.OutputsRead) {
+       brw->fragment_program->Base.nir->info.outputs_read) {
       /* _NEW_BUFFERS */
       const struct gl_framebuffer *fb = ctx->DrawBuffer;