diff options
| author | Ilia Mirkin <[email protected]> | 2017-01-01 23:02:06 -0500 |
|---|---|---|
| committer | Ilia Mirkin <[email protected]> | 2017-01-16 21:13:08 -0500 |
| commit | 1393999541f3956156bf227209ecbf6d814ffc8f (patch) | |
| tree | 2064061cc57874727f5e6fa2e73b34c9de94f08d /src | |
| parent | 376316e963b6636bb3c3900b3918a197c5e632aa (diff) | |
gallium: add FBFETCH opcode to retrieve the current sample value
Signed-off-by: Ilia Mirkin <[email protected]>
Reviewed-by: Nicolai Hähnle <[email protected]>
Diffstat (limited to 'src')
| -rw-r--r-- | src/gallium/auxiliary/tgsi/tgsi_info.c | 2 | ||||
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 13 | ||||
| -rw-r--r-- | src/gallium/include/pipe/p_shader_tokens.h | 2 |
3 files changed, 15 insertions, 2 deletions
diff --git a/src/gallium/auxiliary/tgsi/tgsi_info.c b/src/gallium/auxiliary/tgsi/tgsi_info.c index 3bec56119b8..4509b955c17 100644 --- a/src/gallium/auxiliary/tgsi/tgsi_info.c +++ b/src/gallium/auxiliary/tgsi/tgsi_info.c @@ -106,7 +106,7 @@ static const struct tgsi_opcode_info opcode_info[TGSI_OPCODE_LAST] = { 1, 3, 0, 0, 0, 0, 0, COMP, "CMP", TGSI_OPCODE_CMP }, { 1, 1, 0, 0, 0, 0, 0, CHAN, "SCS", TGSI_OPCODE_SCS }, { 1, 2, 1, 0, 0, 0, 0, OTHR, "TXB", TGSI_OPCODE_TXB }, - { 0, 1, 0, 0, 0, 0, 1, NONE, "", 69 }, /* removed */ + { 1, 1, 0, 0, 0, 0, 0, OTHR, "FBFETCH", TGSI_OPCODE_FBFETCH }, { 1, 2, 0, 0, 0, 0, 0, COMP, "DIV", TGSI_OPCODE_DIV }, { 1, 2, 0, 0, 0, 0, 0, REPL, "DP2", TGSI_OPCODE_DP2 }, { 1, 2, 1, 0, 0, 0, 0, OTHR, "TXL", TGSI_OPCODE_TXL }, diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 3e2d0e9fac2..b981278821c 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -2570,6 +2570,19 @@ Resource Access Opcodes image, while .w will contain the number of samples for multi-sampled images. +.. opcode:: FBFETCH - Load data from framebuffer + + Syntax: ``FBFETCH dst, output`` + + Example: ``FBFETCH TEMP[0], OUT[0]`` + + This is only valid on ``COLOR`` semantic outputs. Returns the color + of the current position in the framebuffer from before this fragment + shader invocation. May return the same value from multiple calls for + a particular output within a single invocation. Note that result may + be undefined if a fragment is drawn multiple times without a blend + barrier in between. + .. _threadsyncopcodes: diff --git a/src/gallium/include/pipe/p_shader_tokens.h b/src/gallium/include/pipe/p_shader_tokens.h index a867d139144..b2d440a0b91 100644 --- a/src/gallium/include/pipe/p_shader_tokens.h +++ b/src/gallium/include/pipe/p_shader_tokens.h @@ -397,7 +397,7 @@ struct tgsi_property_data { #define TGSI_OPCODE_CMP 66 #define TGSI_OPCODE_SCS 67 #define TGSI_OPCODE_TXB 68 - /* gap */ +#define TGSI_OPCODE_FBFETCH 69 #define TGSI_OPCODE_DIV 70 #define TGSI_OPCODE_DP2 71 #define TGSI_OPCODE_TXL 72 |