[Mesa-dev] [RFC 03/63] i965: Add boilerplate function for QueryInternalFormat driver hook

[Eduardo Lima Mitev]

By default, we call back the driver's hook fallback function that has generic
implementations for the all the queries.
---
 src/mesa/drivers/dri/i965/Makefile.sources  |  1 +
 src/mesa/drivers/dri/i965/brw_context.c     |  1 +
 src/mesa/drivers/dri/i965/brw_context.h     |  5 ++++
 src/mesa/drivers/dri/i965/brw_formatquery.c | 45 +++++++++++++++++++++++++++++
 4 files changed, 52 insertions(+)
 create mode 100644 src/mesa/drivers/dri/i965/brw_formatquery.c

diff --git a/src/mesa/drivers/dri/i965/Makefile.sources b/src/mesa/drivers/dri/i965/Makefile.sources
index cea1e87..b76cac6 100644
--- a/src/mesa/drivers/dri/i965/Makefile.sources
+++ b/src/mesa/drivers/dri/i965/Makefile.sources
@@ -121,6 +121,7 @@ i965_FILES = \
 	brw_ff_gs.h \
 	brw_fs_channel_expressions.cpp \
 	brw_fs_vector_splitting.cpp \
+	brw_formatquery.c \
 	brw_gs.c \
 	brw_gs.h \
 	brw_gs_state.c \
diff --git a/src/mesa/drivers/dri/i965/brw_context.c b/src/mesa/drivers/dri/i965/brw_context.c
index 9ba3339..9152416 100644
--- a/src/mesa/drivers/dri/i965/brw_context.c
+++ b/src/mesa/drivers/dri/i965/brw_context.c
@@ -347,6 +347,7 @@ brw_init_driver_functions(struct brw_context *brw,
       brw_init_conditional_render_functions(functions);
 
    functions->QuerySamplesForFormat = brw_query_samples_for_format;
+   functions->QueryInternalFormat = brw_query_internal_format;
 
    functions->NewTransformFeedback = brw_new_transform_feedback;
    functions->DeleteTransformFeedback = brw_delete_transform_feedback;
diff --git a/src/mesa/drivers/dri/i965/brw_context.h b/src/mesa/drivers/dri/i965/brw_context.h
index b80db00..0ba642e 100644
--- a/src/mesa/drivers/dri/i965/brw_context.h
+++ b/src/mesa/drivers/dri/i965/brw_context.h
@@ -1873,6 +1873,11 @@ void brw_emit_depth_stall_flushes(struct brw_context *brw);
 void gen7_emit_vs_workaround_flush(struct brw_context *brw);
 void gen7_emit_cs_stall_flush(struct brw_context *brw);
 
+/* brw_queryformat.c */
+void brw_query_internal_format(struct gl_context *ctx, GLenum target,
+                               GLenum internalFormat, GLenum pname,
+                               GLint *params);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/mesa/drivers/dri/i965/brw_formatquery.c b/src/mesa/drivers/dri/i965/brw_formatquery.c
new file mode 100644
index 0000000..ad59f03
--- /dev/null
+++ b/src/mesa/drivers/dri/i965/brw_formatquery.c
@@ -0,0 +1,45 @@
+/*
+ * Copyright © 2015 Intel Corporation
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+#include "brw_context.h"
+#include "main/formatquery.h"
+
+void
+brw_query_internal_format(struct gl_context *ctx, GLenum target,
+                          GLenum internalFormat, GLenum pname, GLint *params)
+{
+   /* The Mesa layer gives us a temporary params buffer that is guaranteed
+    * to be non-NULL, and have at least 16 elements.
+    */
+   assert(params != NULL);
+
+   switch (pname) {
+   default:
+      /* By default, we call the driver hook's fallback function from the frontend,
+       * which has generic implementation for all pnames.
+       */
+      _mesa_query_internal_format_default(ctx, target, internalFormat, pname,
+                                          params);
+      break;
+   }
+}
-- 
2.5.3