summaryrefslogtreecommitdiffstats
path: root/src
diff options
context:
space:
mode:
authorDave Airlie <[email protected]>2016-04-27 07:55:20 +1000
committerDave Airlie <[email protected]>2016-05-02 07:28:58 +1000
commit277170eeea00e001635aa0c8ac90012a6f98f299 (patch)
tree8b999494828ee0b3ff70e0333c983ee315cb6fb9 /src
parent3950aa47df26ad4cbfa9ca02dffa8ebd5a9b432a (diff)
softpipe: allow r32 xchg on shader images.
This is part of OES_shader_image_atomic.txt. Reviewed-by: Roland Scheidegger <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
Diffstat (limited to 'src')
-rw-r--r--src/gallium/drivers/softpipe/sp_image.c40
1 files changed, 40 insertions, 0 deletions
diff --git a/src/gallium/drivers/softpipe/sp_image.c b/src/gallium/drivers/softpipe/sp_image.c
index f72c4e71ce4..0be11cb8640 100644
--- a/src/gallium/drivers/softpipe/sp_image.c
+++ b/src/gallium/drivers/softpipe/sp_image.c
@@ -607,6 +607,42 @@ handle_op_int(const struct pipe_image_view *iview,
s, t, 1, 1);
}
+/* GLES OES_shader_image_atomic.txt allows XCHG on R32F */
+static void
+handle_op_r32f_xchg(const struct pipe_image_view *iview,
+ const struct tgsi_image_params *params,
+ bool just_read,
+ char *data_ptr,
+ uint qi,
+ unsigned stride,
+ unsigned opcode,
+ int s,
+ int t,
+ float rgba[TGSI_NUM_CHANNELS][TGSI_QUAD_SIZE])
+{
+ float sdata[4];
+ uint c;
+ int nc = 1;
+ util_format_read_4f(params->format,
+ sdata, 0,
+ data_ptr, stride,
+ s, t, 1, 1);
+ if (just_read) {
+ for (c = 0; c < nc; c++) {
+ ((int32_t *)rgba[c])[qi] = sdata[c];
+ }
+ return;
+ }
+
+ for (c = 0; c < nc; c++) {
+ int temp = sdata[c];
+ sdata[c] = ((float *)rgba[c])[qi];
+ ((float *)rgba[c])[qi] = temp;
+ }
+ util_format_write_4f(params->format, sdata, 0, data_ptr, stride,
+ s, t, 1, 1);
+}
+
/*
* Implement atomic image operations.
*/
@@ -682,6 +718,10 @@ sp_tgsi_op(const struct tgsi_image *image,
else if (util_format_is_pure_sint(params->format))
handle_op_int(iview, params, just_read, data_ptr, j, stride,
opcode, s_coord, t_coord, rgba, rgba2);
+ else if (params->format == PIPE_FORMAT_R32_FLOAT &&
+ opcode == TGSI_OPCODE_ATOMXCHG)
+ handle_op_r32f_xchg(iview, params, just_read, data_ptr, j, stride,
+ opcode, s_coord, t_coord, rgba);
else
assert(0);
}