gallium/st: add pipe_context::generate_mipmap()

This patch adds a new interface to support hardware mipmap generation.
PIPE_CAP_GENERATE_MIPMAP is added to allow a driver to specify
if this new interface is supported; if not supported, the state tracker will
fallback to mipmap generation by rendering/texturing.

v2: add PIPE_CAP_GENERATE_MIPMAP to the disabled section for all drivers
v3: add format to the generate_mipmap interface to allow mipmap generation
    using a format other than the resource format
v4: fix return type of trace_context_generate_mipmap()

Reviewed-by: Brian Paul <[email protected]>
Reviewed-by: Roland Scheidegger <[email protected]>
Reviewed-by: Jose Fonseca <[email protected]>

1 files changed, 37 insertions, 0 deletions

diff --git a/src/gallium/drivers/trace/tr_context.c b/src/gallium/drivers/trace/tr_context.c
index d4c88c9be6d..b5ab9249835 100644
--- a/src/gallium/drivers/trace/tr_context.c
+++ b/src/gallium/drivers/trace/tr_context.c
@@ -1291,6 +1291,42 @@ trace_context_flush(struct pipe_context *_pipe,
 }
 
 
+static inline boolean
+trace_context_generate_mipmap(struct pipe_context *_pipe,
+                              struct pipe_resource *res,
+                              enum pipe_format format,
+                              unsigned base_level,
+                              unsigned last_level,
+                              unsigned first_layer,
+                              unsigned last_layer)
+{
+   struct trace_context *tr_ctx = trace_context(_pipe);
+   struct pipe_context *pipe = tr_ctx->pipe;
+   boolean ret;
+
+   res = trace_resource_unwrap(tr_ctx, res);
+
+   trace_dump_call_begin("pipe_context", "generate_mipmap");
+
+   trace_dump_arg(ptr, pipe);
+   trace_dump_arg(ptr, res);
+
+   trace_dump_arg(format, format);
+   trace_dump_arg(uint, base_level);
+   trace_dump_arg(uint, last_level);
+   trace_dump_arg(uint, first_layer);
+   trace_dump_arg(uint, last_layer);
+
+   ret = pipe->generate_mipmap(pipe, res, format, base_level, last_level,
+                               first_layer, last_layer);
+
+   trace_dump_ret(bool, ret);
+   trace_dump_call_end();
+
+   return ret;
+}
+
+
 static inline void
 trace_context_destroy(struct pipe_context *_pipe)
 {
@@ -1620,6 +1656,7 @@ trace_context_create(struct trace_screen *tr_scr,
    TR_CTX_INIT(clear_render_target);
    TR_CTX_INIT(clear_depth_stencil);
    TR_CTX_INIT(flush);
+   TR_CTX_INIT(generate_mipmap);
    TR_CTX_INIT(texture_barrier);
    TR_CTX_INIT(memory_barrier);
    TR_CTX_INIT(set_tess_state);