st/mesa: add compute program dispatch callbacks

This state tracker implements DispatchCompute() and DispatchComputeIndirect().

Signed-off-by: Samuel Pitoiset <[email protected]>
Reviewed-by: Marek Olšák <[email protected]>
Reviewed-by: Ilia Mirkin <[email protected]>

4 files changed, 127 insertions, 0 deletions

diff --git a/src/mesa/Makefile.sources b/src/mesa/Makefile.sources
index 6669f295399..f93c78285f8 100644
--- a/src/mesa/Makefile.sources
+++ b/src/mesa/Makefile.sources
@@ -427,6 +427,8 @@ STATETRACKER_FILES = \
 	state_tracker/st_cb_bufferobjects.h \
 	state_tracker/st_cb_clear.c \
 	state_tracker/st_cb_clear.h \
+	state_tracker/st_cb_compute.c \
+	state_tracker/st_cb_compute.h \
 	state_tracker/st_cb_condrender.c \
 	state_tracker/st_cb_condrender.h \
 	state_tracker/st_cb_copyimage.c \
diff --git a/src/mesa/state_tracker/st_cb_compute.c b/src/mesa/state_tracker/st_cb_compute.c
new file mode 100644
index 00000000000..79a616cf33c
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_compute.c
@@ -0,0 +1,85 @@
+/**************************************************************************
+ *
+ * Copyright 2016 Samuel Pitoiset
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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 "main/state.h"
+#include "st_atom.h"
+#include "st_context.h"
+#include "st_cb_bufferobjects.h"
+#include "st_cb_compute.h"
+
+#include "pipe/p_context.h"
+
+static void st_dispatch_compute_common(struct gl_context *ctx,
+                                       const GLuint *num_groups,
+                                       struct pipe_resource *indirect,
+                                       GLintptr indirect_offset)
+{
+   struct gl_shader_program *prog =
+      ctx->_Shader->CurrentProgram[MESA_SHADER_COMPUTE];
+   struct st_context *st = st_context(ctx);
+   struct pipe_context *pipe = st->pipe;
+   struct pipe_grid_info info = {};
+
+   if (ctx->NewState)
+      _mesa_update_state(ctx);
+
+   if (st->dirty_cp.st || ctx->NewDriverState)
+      st_validate_state(st, ST_PIPELINE_COMPUTE);
+
+   for (unsigned i = 0; i < 3; i++) {
+      info.block[i] = prog->Comp.LocalSize[i];
+      info.grid[i]  = num_groups ? num_groups[i] : 0;
+   }
+
+   if (indirect) {
+      info.indirect = indirect;
+      info.indirect_offset = indirect_offset;
+   }
+
+   pipe->launch_grid(pipe, &info);
+}
+
+static void st_dispatch_compute(struct gl_context *ctx,
+                                const GLuint *num_groups)
+{
+   st_dispatch_compute_common(ctx, num_groups, NULL, 0);
+}
+
+static void st_dispatch_compute_indirect(struct gl_context *ctx,
+                                         GLintptr indirect_offset)
+{
+   struct gl_buffer_object *indirect_buffer = ctx->DispatchIndirectBuffer;
+   struct pipe_resource *indirect = st_buffer_object(indirect_buffer)->buffer;
+
+   st_dispatch_compute_common(ctx, NULL, indirect, indirect_offset);
+}
+
+void st_init_compute_functions(struct dd_function_table *functions)
+{
+   functions->DispatchCompute = st_dispatch_compute;
+   functions->DispatchComputeIndirect = st_dispatch_compute_indirect;
+}
diff --git a/src/mesa/state_tracker/st_cb_compute.h b/src/mesa/state_tracker/st_cb_compute.h
new file mode 100644
index 00000000000..78ec756a69e
--- /dev/null
+++ b/src/mesa/state_tracker/st_cb_compute.h
@@ -0,0 +1,38 @@
+/**************************************************************************
+ *
+ * Copyright 2016 Samuel Pitoiset
+ * All Rights Reserved.
+ *
+ * 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, sub license, 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 NON-INFRINGEMENT.
+ * IN NO EVENT SHALL VMWARE AND/OR ITS SUPPLIERS 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.
+ *
+ **************************************************************************/
+
+#ifndef ST_CB_COMPUTE_H
+#define ST_CB_COMPUTE_H
+
+#include "main/compiler.h"
+
+struct dd_function_table;
+
+extern void
+st_init_compute_functions(struct dd_function_table *functions);
+
+#endif /* ST_CB_COMPUTE_H */
diff --git a/src/mesa/state_tracker/st_context.c b/src/mesa/state_tracker/st_context.c
index 287a4ea0dee..e4697633ea0 100644
--- a/src/mesa/state_tracker/st_context.c
+++ b/src/mesa/state_tracker/st_context.c
@@ -43,6 +43,7 @@
 #include "st_cb_blit.h"
 #include "st_cb_bufferobjects.h"
 #include "st_cb_clear.h"
+#include "st_cb_compute.h"
 #include "st_cb_condrender.h"
 #include "st_cb_copyimage.h"
 #include "st_cb_drawpixels.h"
@@ -510,6 +511,7 @@ void st_init_driver_functions(struct pipe_screen *screen,
    st_init_flush_functions(screen, functions);
    st_init_string_functions(functions);
    st_init_viewport_functions(functions);
+   st_init_compute_functions(functions);
 
    st_init_xformfb_functions(functions);
    st_init_syncobj_functions(functions);