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* mesa: Add support for the ARB_pipeline_statistics_query extensionBen Widawsky2015-02-177-0/+136
| | | | | | | | | | | | | | | | | | | | | | | | | This was originally part of a single patch which added the extension, and implemented it for i965 classic. For information about the evolution of the patch, please see the subsequent commit. One difference here as compared to the original mega patch is this does build support for the compute shader query. Since it cannot be tested on any platform, it will always return NULL for now. Jordan has already written a patch to address this, and when that patch lands, this logic can be modified. v2: Fix typo in subject (Brian Paul) Add checks for desktop gl (Ilia) Fail for any callers for now (Ilia) Update QueryCounterBits for new tokens (Ilia) Jordan: Use _mesa_has_compute_shaders Signed-off-by: Ben Widawsky <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> v3: Rebased on patch which adds the proper information to unstub tessellation shaders. Reviewed-by: Kenneth Graunke <[email protected]>
* mesa: Add _mesa_has_compute_shadersJordan Justen2015-02-171-0/+11
| | | | | | | | | | v2 (Ben): Change GLboolean to bool as requested by Ian Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Ilia Mirkin <[email protected]> Reviewed-by: Ben Widawsky <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Signed-off-by: Ben Widawsky <[email protected]>
* mesa: Add ARB_tessellation_shader to extension table.Fabian Bieler2015-02-172-0/+2
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Prefer Meta over the BLT for BlitFramebuffer.Kenneth Graunke2015-02-171-7/+7
| | | | | | | | | | | | | | | | | There's some debate about whether we should use Meta or BLORP, but either should run circles around the BLT engine. In particular, this means that Gen8+ will use the 3D engine for blits, like we do on Gen6-7. Improves performance in "copypixrate -blit -back" (from Mesa demos) by 232.037% +/- 3.15795% (n=10) on Broadwell GT3e. v2: Rebase on Laura's changes. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Matt Turner <[email protected]> Cc: "10.5" <[email protected]>
* i965/fs: Add algebraic optimizations for MAD.Matt Turner2015-02-171-0/+43
| | | | | | | | | total instructions in shared programs: 5764176 -> 5763808 (-0.01%) instructions in affected programs: 25121 -> 24753 (-1.46%) helped: 164 HURT: 2 Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Emit MAD instructions when possible.Matt Turner2015-02-172-8/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Previously we didn't emit MAD instructions since they cannot take immediate arguments, but with the opt_combine_constants() pass we can handle this properly. total instructions in shared programs: 5920017 -> 5733278 (-3.15%) instructions in affected programs: 3625153 -> 3438414 (-5.15%) helped: 22017 HURT: 870 GAINED: 91 LOST: 49 Without constant pooling, this patch is a complete loss: total instructions in shared programs: 5912589 -> 5987888 (1.27%) instructions in affected programs: 3190050 -> 3265349 (2.36%) helped: 1564 HURT: 17827 GAINED: 27 LOST: 101 And since the constant pooling patch by itself hurt a bunch of things, from before constant pooling to this patch the results are: total instructions in shared programs: 5895414 -> 5747946 (-2.50%) instructions in affected programs: 3617993 -> 3470525 (-4.08%) helped: 20478 HURT: 4469 GAINED: 54 LOST: 146 Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Allow immediates in MAD and LRP instructions.Matt Turner2015-02-172-3/+33
| | | | | | | | | | | | | | | And then the opt_combine_constants() pass will pull them out into registers. This will allow us to do some algebraic optimizations on MAD and LRP. total instructions in shared programs: 5946656 -> 5931320 (-0.26%) instructions in affected programs: 778247 -> 762911 (-1.97%) helped: 3780 HURT: 6 GAINED: 12 LOST: 12 Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Add pass to combine immediates.Matt Turner2015-02-174-0/+287
| | | | | | | | | | | | | total instructions in shared programs: 5885407 -> 5940958 (0.94%) instructions in affected programs: 3617311 -> 3672862 (1.54%) helped: 3 HURT: 23556 GAINED: 31 LOST: 165 ... but will allow us to always emit MAD instructions. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Remove force_writemask_all assertion for execsize < 8.Matt Turner2015-02-171-1/+0
| | | | | | | This doesn't seem to be necessary. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86974 Reviewed-by: Kenneth Graunke <[email protected]>
* i965/cfg: Add function to generate a dot file of the dominator tree.Matt Turner2015-02-172-0/+11
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965/cfg: Add function to generate a dot file of the CFG.Matt Turner2015-02-172-0/+15
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965/cfg: Calculate the immediate dominators.Matt Turner2015-02-172-4/+76
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965/cfg: Allow cfg::dump to be called without a visitor.Matt Turner2015-02-171-1/+2
| | | | | | | | | The fs_visitor's dump_instruction() implementation calls cfg_t() indirectly through calculate_live_intervals, so if you have an infinite loop in the CFG code, you can't call cfg::dump(fs_visitor *) to debug it. Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Allow exec_list sentinels as arguments to insert functions.Matt Turner2015-02-171-2/+4
| | | | | | | | | | | | | | | | | | To insert an instruction at the end of a basic block, we typically do something like inst = block->last_non_control_flow_inst(); inst->insert_after(block, new_inst); But blocks can consist of a single control flow instruction, so inst will actually be the exec_list's head sentinel. We shouldn't use it as if it were a regular instruction, but it is safe to insert something after it. This patch avoids assert-failing because an exec_list sentinel wasn't in the basic block's instruction list. Reviewed-by: Kenneth Graunke <[email protected]>
* Make _mesa_swizzle_and_convert argument types in .c match those in .hAlan Coopersmith2015-02-171-2/+2
| | | | | | | | | | Caused Solaris Studio compilers to fail to build with errors about incompatible function redefinitions. Signed-off-by: Alan Coopersmith <[email protected]> Cc: "10.5" <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* Use __typeof instead of typeof with Solaris Studio compilersAlan Coopersmith2015-02-171-3/+3
| | | | | | | | | | While the C compiler accepts typeof, C++ requires __typeof. Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=86944 Signed-off-by: Alan Coopersmith <[email protected]> Cc: "10.5" <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* Avoid fighting with Solaris headers over isnormal()Alan Coopersmith2015-02-171-1/+1
| | | | | | | | | | | When compiling in C99 or C++11 modes, Solaris defines isnormal() as a macro via <math.h>, which causes the function definition to become too mangled to compile. Signed-off-by: Alan Coopersmith <[email protected]> Cc: "10.5" <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* Remove extraneous ; after DECL_TYPE usageAlan Coopersmith2015-02-171-33/+33
| | | | | | | | | | | | | | The macro is defined to provide a trailing ; so this caused the expansion to end in ";;" which made the Solaris Studio compilers issue warnings for every line of: "builtin_type_macros.h", line 113: Warning: extra ";" ignored. for every file that included the header, filling build logs with thousands of useless warnings. Signed-off-by: Alan Coopersmith <[email protected]> Cc: "10.5" <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* Bracket arguments to tr so they work with Solaris trAlan Coopersmith2015-02-171-1/+1
| | | | | | | | | | | | | | | | https://www.gnu.org/savannah-checkouts/gnu/autoconf/manual/autoconf-2.69/html_node/Limitations-of-Usual-Tools.html#index-g_t_0040command_007btr_007d-1842 Without this fix, egl fails to build on Solaris, with the error: <command-line>:0:22: error: '_EGL_PLATFORM_x11' undeclared (first use in this function) egldisplay.c:207:31: note: in expansion of macro '_EGL_NATIVE_PLATFORM' native_platform = _EGL_NATIVE_PLATFORM; ^ Signed-off-by: Alan Coopersmith <[email protected]> Reviewed-by: Matt Turner <[email protected]> Reviewed-by: Emil Velikov <[email protected]> Cc: "10.5" <[email protected]>
* glsl: Reduce memory consumption of copy propagation passes.Kenneth Graunke2015-02-172-6/+25
| | | | | | | | | | | | | | | | | | | | | | | | | opt_copy_propagation and opt_copy_propagation_elements create new ACP and Kill sets each time they enter a new control flow block. For if blocks, they also copy the entire existing ACP set contents into the new set. When we exit the control flow block, we discard the new sets. However, we weren't freeing them - so they lived on until the pass finished. This can waste a lot of memory (57MB on one pessimal shader). This patch makes the pass allocate ACP entries using this->acp as the memory context, and Kill entries out of this->kill. It also steals kill entries when moving them from the inner kill list to the parent. It then frees the lists, including their contents. v2: Move ralloc_free(this->acp) just before this->acp = orig_acp (suggested by Eric Anholt). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Cc: "10.5 10.4" <[email protected]>
* i965: Add device limits for tess threads & URB entriesChris Forbes2015-02-174-0/+48
| | | | | | | | This should cover all platforms prior to Skylake. Signed-off-by: Chris Forbes <[email protected]> Signed-off-by: Kenneth Graunke <[email protected]> Acked-by: Ben Widawsky <[email protected]>
* r600g/sb: treat undefined values like constantsDave Airlie2015-02-181-2/+2
| | | | | | | | | | | | When we schedule an instructions with undefined value, we eventually will use 0, which is a constant, however sb wasn't taking this into account and creating ops with illegal scalar swizzles. this replaces my fix for op3 in t slots. Reviewed-by: Glenn Kennard <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* i915c: Use the actual MIN instruction.Kenneth Graunke2015-02-171-15/+1
| | | | | | | | | | | | | Matt Turner noticed that the hardware has always had a MIN instruction, but the driver always used MAX+MOV for no apparent reason. This should cut an instruction, and a temporary, allowing more programs to run in hardware. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* i915g: Use the actual MIN instruction.Kenneth Graunke2015-02-171-15/+1
| | | | | | | | | | | | | Matt Turner noticed that the hardware has always had a MIN instruction, but the driver always used MAX+MOV for no apparent reason. This should cut an instruction, and a temporary, allowing more programs to run in hardware. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* i965: Add a function to disassemble an instruction from the 4 dwords.Kenneth Graunke2015-02-171-0/+12
| | | | | | | | | I used this a while back when debugging GPU hangs, and it seems like it could be useful, so I figured I'd add it so people can use it in the debugger. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
* i965: Do Sandybridge workaround flushes before each primitive.Kenneth Graunke2015-02-1711-84/+20
| | | | | | | | | | | | | | | | | | | | | | | Sandybridge requires the post-sync non-zero workaround in a ton of places, and if you ever miss one, the GPU usually hangs. Currently, we try to track exactly when a workaround flush is necessary (via the brw->batch.need_workaround_flush flag). This is tricky to get right, and we've botched it several times in the past. This patch unconditionally performs the post-sync non-zero flush at the start of each primitive's state upload (including BLORP). We drop the needs_workaround_flush flag, and drop all the other callers, as the flush has already been performed. We have no data to indicate that simply flushing all the time will hurt performance, and it has the potential to help stability. v2: Add post-sync workaround to initial GPU state upload to be extra cautious (suggested by Chad Versace). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Chad Versace <[email protected]>
* main: Fixed _mesa_GetCompressedTexImage_sw to copy slices correctly.Laura Ekstrand2015-02-171-2/+2
| | | | | | | | | | | Previously array textures were not working with GetCompressedTextureImage, leading to failures in the test arb_direct_state_access/getcompressedtextureimage.c. Tested-by: Laura Ekstrand <[email protected]> Reviewed-by: Brian Paul <[email protected]> Cc: "10.4, 10.5" <[email protected]>
* i965/vec4: Silence unused parameter warningsIan Romanick2015-02-173-7/+5
| | | | | | | | | | | | | brw_vec4_copy_propagation.cpp:243:59: warning: unused parameter 'reg' [-Wunused-parameter] int arg, struct copy_entry *entry, int reg) ^ brw_vec4_generator.cpp:869:57: warning: unused parameter 'inst' [-Wunused-parameter] vec4_generator::generate_unpack_flags(vec4_instruction *inst, ^ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* mesa/main: Silence unused parameter warningIan Romanick2015-02-173-12/+0
| | | | | | | | | | | | | Just remove the _mesa_free_lighting_data function. The body has been empty since the shine table was moved into the tnl module (commit ba1d921). main/light.c:1216:46: warning: unused parameter 'ctx' [-Wunused-parameter] _mesa_free_lighting_data( struct gl_context *ctx ) ^ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* util/hash: Silence comparison between signed and unsigned integer warnings ↵Ian Romanick2015-02-173-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in tests delete_management.c:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < size; i++) { ^ delete_management.c:69:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = size - 100; i < size; i++) { ^ delete_management.c:79:31: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(key_value(entry->key) >= size - 100 && ^ delete_management.c:79:70: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(key_value(entry->key) >= size - 100 && ^ insert_many.c:56:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < size; i++) { ^ insert_many.c:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < size; i++) { ^ insert_many.c:67:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] assert(ht->entries == size); ^ random_entry.c:62:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < size; i++) { ^ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* util/hash: Silence unused parameter warnings in testsIan Romanick2015-02-179-0/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | delete_and_lookup.c:37:21: warning: unused parameter ‘key’ [-Wunused-parameter] badhash(const void *key) ^ delete_and_lookup.c:43:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ delete_and_lookup.c:43:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ collision.c:34:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ collision.c:34:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ destroy_callback.c:50:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ destroy_callback.c:50:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ insert_many.c:46:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ insert_many.c:46:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ insert_and_lookup.c:34:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ insert_and_lookup.c:34:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ null_destroy.c:32:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ null_destroy.c:32:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ random_entry.c:52:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ random_entry.c:52:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ remove_null.c:34:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ remove_null.c:34:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ replacement.c:34:10: warning: unused parameter ‘argc’ [-Wunused-parameter] main(int argc, char **argv) ^ replacement.c:34:23: warning: unused parameter ‘argv’ [-Wunused-parameter] main(int argc, char **argv) ^ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glcpp: Silence GCC warningIan Romanick2015-02-171-1/+1
| | | | | | | | | glcpp/glcpp.c:124:1: warning: ‘static’ is not at beginning of declaration [-Wold-style-declaration] const static struct option ^ Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* radeonsi: fix a crash if a stencil ref state is set before a DSA stateMarek Olšák2015-02-171-4/+8
| | | | | | | | | | | | + minor indentation fixes Discovered by Axel Davy. This can't be reproduced with any app, because all state trackers set a DSA state first. Cc: 10.5 10.4 10.3 <[email protected]> Reviewed-by: Axel Davy <[email protected]>
* r600g,radeonsi: implement GL_AMD_pinned_memoryMarek Olšák2015-02-176-5/+57
| | | | | | v2: update release notes Reviewed-by: Christian König <[email protected]>
* winsys/radeon: test the userptr ioctl to see if it's presentMarek Olšák2015-02-175-19/+35
| | | | | | There is no other way to check for support. Reviewed-by: Christian König <[email protected]>
* winsys/radeon: allow unaligned size for user-memory buffersMarek Olšák2015-02-171-1/+1
| | | | | | This is not required, but being user-friendly doesn't hurt. Reviewed-by: Christian König <[email protected]>
* winsys/radeon: allow mapping a user bufferMarek Olšák2015-02-173-2/+8
| | | | | | OpenGL requires this. Reviewed-by: Christian König <[email protected]>
* gallium: add interface and state tracker support for GL_AMD_pinned_memoryMarek Olšák2015-02-1715-5/+39
| | | | | | v2: add alignment restrictions to docs, fix indentation in headers Reviewed-by: Christian König <[email protected]>
* mesa: implement GL_AMD_pinned_memoryMarek Olšák2015-02-174-2/+43
| | | | | | | | | | | | | | It's not possible to query the current buffer binding, because the extension doesn't define GL_..._BUFFER__BINDING_AMD. Drivers should check the target parameter of Drivers.BufferData. If it's equal to GL_EXTERNAL_VIRTUAL_MEMORY_BUFFER_AMD, the memory should be pinned. That's all there is to it. A piglit test is on the piglit mailing list. Reviewed-by: Ian Romanick <[email protected]> Reviewed-by: Christian König <[email protected]>
* winsys/radeon: add user pointer supportChristian König2015-02-172-0/+113
| | | | | Signed-off-by: Christian König <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* mesa: fix AtomicBuffer typo in _mesa_DeleteBuffersMarek Olšák2015-02-171-1/+1
| | | | | Cc: 10.5 10.4 10.3 <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* radeonsi: initialize TC_L2_dirty to false after buffer allocationMarek Olšák2015-02-171-0/+1
| | | | | | I forgot to do this, though "true" should have no effect on correctness. Reviewed-by: Michel Dänzer <[email protected]>
* radeonsi: small fix in SPI stateMarek Olšák2015-02-171-2/+4
| | | | | Cc: 10.5 10.4 <[email protected]> Reviewed-by: Michel Dänzer <[email protected]>
* r600g,radeonsi: use fences to implement PIPE_QUERY_GPU_FINISHEDMarek Olšák2015-02-171-9/+13
| | | | | | Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=89014 Reviewed-by: Michel Dänzer <[email protected]>
* r600g,radeonsi: demote TIMESTAMP_DISJOINT query to be a software queryMarek Olšák2015-02-171-14/+13
| | | | | | The query result is always constant. Reviewed-by: Michel Dänzer <[email protected]>
* st/glsl_to_tgsi: fix whitespaceDave Airlie2015-02-171-202/+178
| | | | | | | | | | | | | everytime I open this file in emacs with show trailing whitespace or git add from it my screen flares with red. Just do a general cleanup, makes working on fp64 support not as jarring. I'm not saying this is perfect, its just better than before. Reviewed-by: Ilia Mirkin <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* glsl/tests: add IMAGE type.Ilia Mirkin2015-02-171-0/+3
| | | | | | | | This fixes a warning when running make check. Signed-off-by: Ilia Mirkin <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* ilo: always set up BLEND_STATE on Gen8Chia-I Wu2015-02-171-7/+1
| | | | There is now an DW0 that seems to be always referenced.
* ilo: fix alpha test on Gen8Chia-I Wu2015-02-171-5/+26
| | | | | Shoudl use GEN8_BLEND_DW0_ALPHA_TEST_ENABLE instead of GEN6_RT_DW1_ALPHA_TEST_ENABLE (and others).
* i965/simd8vs: Fix SIMD8 atomicsBen Widawsky2015-02-161-8/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The short version: we need to set bits in R0.7 which provide a mask to be used for PS kill samples/pixels. Since the VS has no such concept, we just need to set all 1. The longer version... Execution for SIMD8 atomics is defined as follows: SIMD8: The low 8 bits of the execution mask are ANDed with 8 bits of the Pixel/Sample Mask from the message header. For the typed messages, the Slot Group in the message descriptor selects either the low or high 8 bits. For the untyped messages, the low 8 bits are always selected. The resulting mask is used to determine which slots are read into the destination GRF register (for read), or which slots are written to the surface (for write). If the header is not present, only the low 8 bits of the execution mask are used. The message header for untyped messages is defined in R0.7 "This field contains the 16-bit pixel/sample mask to be used for SIMD16 and SIMD8 messages. All 16 bits are used for SIMD16 messages. For typed SIMD8 messages, Slot Group selects which 8 bits of this field are used. For untyped SIMD8 messages, the low 8 bits of this field are used." Furthermore, "The message header for the untyped messages only needs to be delivered for pixel shader threads, where the execution mask may indicate pixels/samples that are enabled only due to derivative (LOD) calculations, but the corresponding slot on the surface must not be accessed." We're not using a pixel shader here, but AFAICT, this mask is used for all stages. This leaves two options, Remove the header, or make the VS code emit the correct thing for the header. I believe one of the goals of using SIMD8 VS was to get as much code reuse as possible, and so I chose the latter. Since the VS has no such thing as kill instructions, the mask is derived simple as all 1's. v2: Add a comment to the code (stolen from Curro on the mailing list) Change the control flow style (Curro + Jason) Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=87258 Cc: Kristian Høgsberg <[email protected]> Signed-off-by: Ben Widawsky <[email protected]> Reviewed-by: Francisco Jerez <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>