---
src/gallium/auxiliary/util/u_draw.c | 39 +++++++++++++++++++++++++
src/gallium/auxiliary/util/u_draw.h | 5 +++
src/gallium/auxiliary/util/u_dump_state.c | 3 ++
src/gallium/docs/source/screen.rst | 3 ++
src/gallium/drivers/i915/i915_screen.c | 1 +
src/gallium/drivers/llvmpipe/lp_draw_arrays.c | 5 +++
src/gallium/drivers/llvmpipe/lp_screen.c | 2 +
src/gallium/drivers/nv30/nv30_screen.c | 1 +
src/gallium/drivers/nv50/nv50_screen.c | 2 +
src/gallium/drivers/r300/r300_screen.c | 1 +
src/gallium/drivers/softpipe/sp_draw_arrays.c | 6 ++++
src/gallium/drivers/softpipe/sp_screen.c | 2 +
src/gallium/drivers/trace/tr_dump_state.c | 3 ++
src/gallium/include/pipe/p_defines.h | 3 +-
src/gallium/include/pipe/p_state.h | 22 ++++++++++++++
15 files changed, 97 insertions(+), 1 deletions(-)
diff --git a/src/gallium/auxiliary/util/u_draw.c
b/src/gallium/auxiliary/util/u_draw.c
index 83d9284..7a28cf1 100644
--- a/src/gallium/auxiliary/util/u_draw.c
+++ b/src/gallium/auxiliary/util/u_draw.c
@@ -27,6 +27,7 @@
#include "util/u_debug.h"
+#include "util/u_inlines.h"
#include "util/u_math.h"
#include "util/u_format.h"
#include "util/u_draw.h"
@@ -123,3 +124,41 @@ util_draw_max_index(
return max_index + 1;
}
+
+
+void
+util_draw_indirect(struct pipe_context *pipe,
+ const struct pipe_draw_info *_info)
+{
+ struct pipe_draw_info info;
+ struct pipe_transfer *transfer;
+ uint32_t *params;
+
+ assert(_info->indirect);
+ assert(!_info->count_from_stream_output);
+
+ memcpy(&info, _info, sizeof(info));
+
+ params = (uint32_t *)
+ pipe_buffer_map_range(pipe,
+ _info->indirect,
+ _info->indirect_offset,
+ _info->indexed ? (4 * 4) : (3 * 4),
+ PIPE_TRANSFER_READ,
+ &transfer);
+ if (!transfer) {
+ debug_printf("%s: failed to map indirect buffer\n", __FUNCTION__);
+ return;
+ }
+
+ info.count = params[0];
+ info.instance_count = params[1];
+ info.start = params[2];
+ info.index_bias = _info->indexed ? params[3] : 0;
+ info.start_instance = _info->indexed ? params[4] : params[3];
+ info.indirect = NULL;
+
+ pipe_buffer_unmap(pipe, transfer);
+
+ pipe->draw_vbo(pipe, &info);
+}
diff --git a/src/gallium/auxiliary/util/u_draw.h
b/src/gallium/auxiliary/util/u_draw.h
index 3dc6918..acec56e 100644
--- a/src/gallium/auxiliary/util/u_draw.h
+++ b/src/gallium/auxiliary/util/u_draw.h
@@ -142,6 +142,11 @@ util_draw_range_elements(struct pipe_context *pipe,
}
+void
+util_draw_indirect(struct pipe_context *pipe,
+ const struct pipe_draw_info *info);
+
+
unsigned
util_draw_max_index(
const struct pipe_vertex_buffer *vertex_buffers,
diff --git a/src/gallium/auxiliary/util/u_dump_state.c
b/src/gallium/auxiliary/util/u_dump_state.c
index d7df5b4..87436c0 100644
--- a/src/gallium/auxiliary/util/u_dump_state.c
+++ b/src/gallium/auxiliary/util/u_dump_state.c
@@ -759,6 +759,9 @@ util_dump_draw_info(FILE *stream, const struct
pipe_draw_info *state)
util_dump_member(stream, ptr, state, count_from_stream_output);
+ util_dump_member(stream, ptr, state, indirect);
+ util_dump_member(stream, uint, state, indirect_offset);
+
util_dump_struct_end(stream);
}
diff --git a/src/gallium/docs/source/screen.rst
b/src/gallium/docs/source/screen.rst
index 68d1a35..c94d87d 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -137,6 +137,9 @@ The integer capabilities:
* ``PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT``: Describes the required
alignment for pipe_sampler_view::u.buf.first_element, in bytes.
If a driver does not support first/last_element, it should return 0.
+* ``PIPE_CAP_DRAW_INDIRECT``: Whether the driver supports taking draw arguments
+ { count, instance_count, start, index_bias } from a PIPE_BUFFER resource.
+ See pipe_draw_info.
.. _pipe_capf:
diff --git a/src/gallium/drivers/i915/i915_screen.c
b/src/gallium/drivers/i915/i915_screen.c
index 430987e..c6ce38f 100644
--- a/src/gallium/drivers/i915/i915_screen.c
+++ b/src/gallium/drivers/i915/i915_screen.c
@@ -209,6 +209,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap
cap)
case PIPE_CAP_QUERY_TIMESTAMP:
case PIPE_CAP_TEXTURE_MULTISAMPLE:
case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
+ case PIPE_CAP_DRAW_INDIRECT:
return 0;
case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
diff --git a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
index eaa9ba3..b5e1a41 100644
--- a/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
+++ b/src/gallium/drivers/llvmpipe/lp_draw_arrays.c
@@ -60,6 +60,11 @@ llvmpipe_draw_vbo(struct pipe_context *pipe, const struct
pipe_draw_info *info)
if (!llvmpipe_check_render_cond(lp))
return;
+ if (unlikely(info->indirect)) {
+ util_draw_indirect(pipe, info);
+ return;
+ }
+
if (lp->dirty)
llvmpipe_update_derived( lp );
diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c
b/src/gallium/drivers/llvmpipe/lp_screen.c
index 3769428..33beafd 100644
--- a/src/gallium/drivers/llvmpipe/lp_screen.c
+++ b/src/gallium/drivers/llvmpipe/lp_screen.c
@@ -209,6 +209,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum
pipe_cap param)
case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
return 0;
+ case PIPE_CAP_DRAW_INDIRECT:
+ return 1;
case PIPE_CAP_CONSTANT_BUFFER_OFFSET_ALIGNMENT:
return 16;
diff --git a/src/gallium/drivers/nv30/nv30_screen.c
b/src/gallium/drivers/nv30/nv30_screen.c
index f3faf8a..d4af9fa 100644
--- a/src/gallium/drivers/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nv30/nv30_screen.c
@@ -120,6 +120,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum
pipe_cap param)
case PIPE_CAP_TEXTURE_MULTISAMPLE:
case PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT:
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+ case PIPE_CAP_DRAW_INDIRECT:
return 0;
case PIPE_CAP_VERTEX_BUFFER_OFFSET_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_VERTEX_BUFFER_STRIDE_4BYTE_ALIGNED_ONLY:
diff --git a/src/gallium/drivers/nv50/nv50_screen.c
b/src/gallium/drivers/nv50/nv50_screen.c
index be74350..3f26e66 100644
--- a/src/gallium/drivers/nv50/nv50_screen.c
+++ b/src/gallium/drivers/nv50/nv50_screen.c
@@ -186,6 +186,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum
pipe_cap param)
case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
case PIPE_CAP_TEXTURE_MULTISAMPLE:
return 0;
+ case PIPE_CAP_DRAW_INDIRECT:
+ return 0;
default:
NOUVEAU_ERR("unknown PIPE_CAP %d\n", param);
return 0;
diff --git a/src/gallium/drivers/r300/r300_screen.c
b/src/gallium/drivers/r300/r300_screen.c
index d0f0070..7ae9dd6 100644
--- a/src/gallium/drivers/r300/r300_screen.c
+++ b/src/gallium/drivers/r300/r300_screen.c
@@ -155,6 +155,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum
pipe_cap param)
case PIPE_CAP_TEXTURE_MULTISAMPLE:
case PIPE_CAP_CUBE_MAP_ARRAY:
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
+ case PIPE_CAP_DRAW_INDIRECT:
return 0;
/* SWTCL-only features. */
diff --git a/src/gallium/drivers/softpipe/sp_draw_arrays.c
b/src/gallium/drivers/softpipe/sp_draw_arrays.c
index ba9e781..f0898a8 100644
--- a/src/gallium/drivers/softpipe/sp_draw_arrays.c
+++ b/src/gallium/drivers/softpipe/sp_draw_arrays.c
@@ -34,6 +34,7 @@
#include "pipe/p_defines.h"
#include "pipe/p_context.h"
#include "util/u_inlines.h"
+#include "util/u_draw.h"
#include "util/u_prim.h"
#include "sp_context.h"
@@ -67,6 +68,11 @@ softpipe_draw_vbo(struct pipe_context *pipe,
if (!softpipe_check_render_cond(sp))
return;
+ if (unlikely(info->indirect)) {
+ util_draw_indirect(pipe, info);
+ return;
+ }
+
sp->reduced_api_prim = u_reduced_prim(info->mode);
if (sp->dirty) {
diff --git a/src/gallium/drivers/softpipe/sp_screen.c
b/src/gallium/drivers/softpipe/sp_screen.c
index af40261..7c746cb 100644
--- a/src/gallium/drivers/softpipe/sp_screen.c
+++ b/src/gallium/drivers/softpipe/sp_screen.c
@@ -171,6 +171,8 @@ softpipe_get_param(struct pipe_screen *screen, enum
pipe_cap param)
return 1;
case PIPE_CAP_TEXTURE_BUFFER_OBJECTS:
return 1;
+ case PIPE_CAP_DRAW_INDIRECT:
+ return 1;
}
/* should only get here on unhandled cases */
debug_printf("Unexpected PIPE_CAP %d query\n", param);
diff --git a/src/gallium/drivers/trace/tr_dump_state.c
b/src/gallium/drivers/trace/tr_dump_state.c
index 006082b..5ed3f91 100644
--- a/src/gallium/drivers/trace/tr_dump_state.c
+++ b/src/gallium/drivers/trace/tr_dump_state.c
@@ -708,6 +708,9 @@ void trace_dump_draw_info(const struct pipe_draw_info
*state)
trace_dump_member(ptr, state, count_from_stream_output);
+ trace_dump_member(ptr, state, indirect);
+ trace_dump_member(uint, state, indirect_offset);
+
trace_dump_struct_end();
}
diff --git a/src/gallium/include/pipe/p_defines.h
b/src/gallium/include/pipe/p_defines.h
index d0db5e4..1aea9f4 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -498,7 +498,8 @@ enum pipe_cap {
PIPE_CAP_MIN_MAP_BUFFER_ALIGNMENT = 75,
PIPE_CAP_CUBE_MAP_ARRAY = 76,
PIPE_CAP_TEXTURE_BUFFER_OBJECTS = 77,
- PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT = 78
+ PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENT = 78,
+ PIPE_CAP_DRAW_INDIRECT = 79
};
/**
diff --git a/src/gallium/include/pipe/p_state.h
b/src/gallium/include/pipe/p_state.h
index ab49cab..89b8fa7 100644
--- a/src/gallium/include/pipe/p_state.h
+++ b/src/gallium/include/pipe/p_state.h
@@ -559,6 +559,28 @@ struct pipe_draw_info
* be set via set_vertex_buffers manually.
*/
struct pipe_stream_output_target *count_from_stream_output;
+
+ /* Indirect parameters resource: If not NULL, most values are taken
+ * from this buffer instead, which is laid out as follows:
+ *
+ * if indexed is TRUE:
+ * struct {
+ * uint32_t count;
+ * uint32_t instance_count;
+ * uint32_t start;
+ * int32_t index_bias;
+ * uint32_t start_instance;
+ * };
+ * otherwise:
+ * struct {
+ * uint32_t count;
+ * uint32_t instance_count;
+ * uint32_t start;
+ * uint32_t start_instance;
+ * };
+ */
+ struct pipe_resource *indirect;
+ unsigned indirect_offset; /**< must be 4 byte aligned */
};
--
1.7.3.4
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