iris: add param domain defines

src/gallium/drivers/iris/iris_context.h

@@ -242,6 +242,15 @@ struct iris_compiled_shader {
    uint8_t derived_data[0];
 };
 
+enum iris_param_domain {
+   IRIS_PARAM_DOMAIN_BUILTIN,
+   IRIS_PARAM_DOMAIN_UNIFORM,
+};
+
+#define IRIS_PARAM(domain, val)  (IRIS_PARAM_DOMAIN_##domain << 24 | (val))
+#define IRIS_PARAM_DOMAIN(param) ((uint32_t)(param) >> 24)
+#define IRIS_PARAM_VALUE(param)  ((uint32_t)(param) & 0x00ffffff)
+
 /**
  * Constant buffer (UBO) information.  See iris_set_const_buffer().
  */

src/gallium/drivers/iris/iris_state.c

@@ -2165,6 +2165,34 @@ upload_uniforms(struct iris_context *ice,
 {
    struct iris_shader_state *shs = &ice->state.shaders[stage];
    struct iris_const_buffer *cbuf = &shs->constbuf[0];
+   struct iris_compiled_shader *shader = ice->shaders.prog[stage];
+   struct brw_stage_prog_data *prog_data = (void *) shader->prog_data;
+
+   unsigned upload_size = prog_data->nr_params * sizeof(uint32_t);
+   assert(upload_size >= shs->cbuf0.buffer_size);
+
+   uint32_t *map =
+      upload_state(ice->ctx.const_uploader, &cbuf->data, upload_size, 64);
+
+   for (int i = 0; i < prog_data->nr_params; i++) {
+      uint32_t param = prog_data->param[i];
+      uint32_t value = 0;
+
+      switch (IRIS_PARAM_DOMAIN(param)) {
+      case IRIS_PARAM_DOMAIN_BUILTIN:
+         assert(!"not used yet");
+         break;
+      case IRIS_PARAM_DOMAIN_UNIFORM:
+         if (shs->cbuf0.user_buffer) {
+            const uint32_t *src = shs->cbuf0.user_buffer;
+
+            value = src[IRIS_PARAM_VALUE(param)];
+         }
+         break;
+      }
+
+      *map++ = value;
+   }
 
    if (shs->cbuf0.user_buffer) {
       u_upload_data(ice->ctx.const_uploader, 0, shs->cbuf0.buffer_size, 32,