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* compiler: Move blob up a levelJason Ekstrand2017-10-121-2/+2
| | | | | | | | We're going to want to use the blob for Vulkan pipeline caching so it makes sense to have it in libcompiler not libglsl. Reviewed-by: Nicolai Hähnle <[email protected]> Reviewed-by: Jordan Justen <[email protected]>
* nir: Move vc4's alpha test lowering to core NIR.Eric Anholt2017-10-101-0/+1
| | | | | | | | | | | | | I've been doing this inside of vc4, but vc5 wants it as well and it may be useful for other drivers (Intel has a related path for pre-gen6 with MRT, and freedreno had a TGSI path for it at one point). This required defining a common enum for the standard comparison functions, but other lowering passes are likely to also want that enum. v2: Add to meson.build as well. Acked-by: Rob Clark <[email protected]>
* nir: add some helpers for doing linkingTimothy Arceri2017-09-261-0/+1
| | | | | | | | | | | | | The initial helpers add support for removing unused varyings between stages. V2: - Moved the io mask helper function into this file rather than nir.h so it's not used elsewhere considering it doesn't handle all corner cases. - Use bitmask rather than hash table to handle tcs outputs (Ken) Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: merge loop_controls.cpp with loop_unroll.cppTimothy Arceri2017-09-211-1/+0
| | | | | | | Having this separate just makes the code harder to follow, and requires an extra walk of the IR. Reviewed-by: Thomas Helland <[email protected]>
* util: move string_to_uint_map to glslEmil Velikov2017-08-291-1/+3
| | | | | | | | | | | | | | | | | | The functionality is used by glsl and mesa. With the latter already depending on the former. With this in place the src/util/ static library libmesautil.la no longer has a C++ dependency. Thus objects which use it (like libEGL) don't need the C++ link. Cc: "17.2" <[email protected]> Fixes: 02cc35937277 ("egl/wayland: Use linux-dmabuf interface for buffers") Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=101851 Signed-off-by: Emil Velikov <[email protected]> Suggested-by: Jason Ekstrand <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Tested-by: Mike Lothian <[email protected]> Tested-by: James Harvey <[email protected]>
* nir: add nir_lower_uniforms_to_ubo passNicolai Hähnle2017-07-311-0/+1
| | | | | | | | | | This is a further lowering of default-block uniform loads that transforms load_uniform intrinsics into load_ubo intrinsics. This simplifies the rest of the backend. v2: transform from load_uniform instead of straight from variables Reviewed-by: Eric Anholt <[email protected]>
* nir: add nir_lower_samplers_as_deref passNicolai Hähnle2017-07-311-0/+1
| | | | | | This pass is a replacement for the nir_lower_samplers pass, which has the advantage of keeping sampler references as derefs. This allows a unified treatment of texture instructions and image intrinsics in the backend.
* nir: Add pass to scalarize read_invocation/read_first_invocationMatt Turner2017-07-201-0/+1
| | | | | | | i965 will want these to be scalar operations. Reviewed-by: Connor Abbott <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Add pass to optimize intrinsicsMatt Turner2017-07-201-0/+1
| | | | | | | Specifically, constant fold intrinsics from ARB_shader_group_vote, but I suspect it'll be useful for other things in the future. Reviewed-by: Kenneth Graunke <[email protected]>
* spirv: Generate spirv_info.cIan Romanick2017-07-181-1/+3
| | | | | | | | | | | | | | | | | | The old table based spirv_*_to_string functions would return NULL for any values "inside" the table that didn't have entries. The tables also needed to be updated by hand each time a new spirv.h was imported. Generate the file instead. v2: Make this script work more like src/mesa/main/format_fallback.py. Suggested by Jason. Remove SCons supports. Suggested by Jason and Emil. Put all the build work in Makefile.nir.am in lieu of adding a new Makefile.spirv.am. Suggested by Emil. Add support for Android builds based on code provided by Emil. Signed-off-by: Ian Romanick <[email protected]> Suggested-by: Jason Ekstrand <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]> Reviewed-by: Emil Velikov <[email protected]>
* nir: Delete nir_array.hThomas Helland2017-06-071-1/+0
| | | | | Reviewed-by: Marek Olšák <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* nir: add pass to lower atomic counters to SSBORob Clark2017-05-041-0/+1
| | | | | | | | This is equivalent to what mesa/st does in glsl_to_tgsi. For most hw there isn't a particularly good reason to treat these differently. Signed-off-by: Rob Clark <[email protected]> Acked-by: Jason Ekstrand <[email protected]>
* nir: Add a simple int64 lowering passJason Ekstrand2017-03-011-0/+1
| | | | | | | | | | | | | | | | | | The algorithms used by this pass, especially for division, are heavily based on the work Ian Romanick did for the similar int64 lowering pass in the GLSL compiler. v2: Properly handle vectors v3: Get rid of log2_denom stuff. Since we're using bcsel, we do all the calculations anyway and this is just extra instructions. v4: - Add back in the log2_denom stuff since it's needed for ensuring that the shifts don't overflow. - Rework the looping part of the pass to be easier to expand. Reviewed-by: Matt Turner <[email protected]>
* nir: Rename lower_double_pack to lower_64bit_packJason Ekstrand2017-02-161-1/+1
| | | | | | | There's nothing "double" about it other than, perhaps, the fact that it packs two 32-bit values. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: add initial implementation of shader cacheTimothy Arceri2017-02-171-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | This uses disk_cache.c to write out a serialization of various state that's required in order to successfully load and use a binary written out by a drivers backend, this state is referred to as "metadata" throughout the implementation. This initial version is intended to work with all stages beside compute. This patch is based on the initial work done by Carl. V2: extend the file's doxygen comment to cover some of the design decisions. V3: - skip cache for fixed function shaders - add int64 support - fix glsl IR program parameter caching/restore and cache the parameter values which are used by gallium backends. - use new link status enum V4: - add compute program support Reviewed-by: Nicolai Hähnle <[email protected]>
* glsl: Add a lowering pass for 64-bit integer multiplicationIan Romanick2017-01-201-0/+1
| | | | | | | | v2: Rename lower_64bit.cpp and lower_64bit_test.cpp to lower_int64. Suggested by Matt. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Add "built-in" functions to do 64x64 => 64 multiplicationIan Romanick2017-01-201-0/+2
| | | | | | | | | | | These functions are directly available in shaders. A #define is added to detect the presence. This allows these functions to be tested using piglit regardless of whether the driver uses them for lowering. The GLSL spec says that functions and macros beginning with __ are reserved for use by the implementation... hey, that's us! Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Move builtin_function related prototypes to a separate fileIan Romanick2017-01-201-0/+1
| | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: Introduce a nir_opt_move_comparisons() pass.Kenneth Graunke2017-01-121-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | This tries to move comparisons (a common source of boolean values) closer to their first use. For GPUs which use condition codes, this can eliminate a lot of temporary booleans and comparisons which reload the condition code register based on a boolean. V2: (Timothy Arceri) - fix move comparision for phis so we dont end up with: vec1 32 ssa_227 = phi block_34: ssa_1, block_38: ssa_240 vec1 32 ssa_235 = feq ssa_227, ssa_1 vec1 32 ssa_230 = phi block_34: ssa_221, block_38: ssa_235 - add nir_op_i2b/nir_op_f2b to the list of comparisons. V3: (Timothy Arceri) - tidy up suggested by Jason. - add inot/fnot to move comparison list V4: (Jason Ekstrand) - clean up move_comparison_source - get rid of the tuple - rework phi handling Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Ian Romanick <[email protected]> [v1] Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Add a pass to lower TES patch_vertices intrinsics to a constant.Kenneth Graunke2017-01-101-0/+1
| | | | | | | | | | | | | | In Vulkan, we always have both the TCS and TES available in the same pipeline, so we can simply use the TCS OutputVertices execution mode value as the TES PatchVertices built-in. For GLSL, we handle this in the linker. But we could use this pass in the case when both TCS and TES are linked together, if we wanted. Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Dave Airlie <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Add a local variable-based copy propagation passJason Ekstrand2017-01-061-0/+1
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir: Rename convert_to_ssa lower_regs_to_ssaJason Ekstrand2016-12-291-1/+1
| | | | This matches the naming of nir_lower_vars_to_ssa, the other to-SSA pass.
* nir: Add a pass for moving SPIR-V continue blocks to the ends of loopsJason Ekstrand2016-12-221-0/+1
| | | | | | | | | | | | | | | When shaders come in from SPIR-V, we handle continue blocks by placing the contents of the continue inside of a "if (!first_iteration)". We do this so that we can properly handle the fact that continues in SPIR-V jump to the continue block at the end of the loop rather than jumping directly to the top of the loop like they do in NIR. In particular, the increment step of a simple for loop ends up in the continue block. This pass looks for this case in loops that don't actually have any continues and moves the continue contents to the end of the loop instead. We need this because loop unrolling doesn't work if the increment is inside of a condition. Reviewed-by: Timothy Arceri <[email protected]>
* nir: Add an optimization pass to remove trivial continuesJason Ekstrand2016-12-221-0/+1
| | | | Reviewed-by: Timothy Arceri <[email protected]>
* nir: add a loop unrolling passTimothy Arceri2016-12-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | V2: - tidy ups suggested by Connor. - tidy up cloning logic and handle copy propagation based of suggestion by Connor. - use nir_ssa_def_rewrite_uses to fix up lcssa phis suggested by Connor. - add support for complex loop unrolling (two terminators) - handle case were the ssa defs use outside the loop is already a phi - support unrolling loops with multiple terminators when trip count is know for each terminator V3: - set correct num_components when creating phi in complex unroll - rewrite update remap table based on Jasons suggestions. - remove unrequired extract_loop_body() helper as suggested by Jason. - simplify the lcssa phi fix up code for simple loops as per Jasons suggestions. - use mem context to keep track of hash table memory as suggested by Jason. - move is_{complex,simple}_loop helpers to the unroll code - require nir_metadata_block_index - partially rewrote complex unroll to be simpler and easier to follow. V4: - use rzalloc() when creating nir_phi_src but not setting pred right away fixes regression cause by ralloc() no longer zeroing memory. V5: - simplify calling of complex_unroll() - use new loop terminator fields to get the break/continue from blocks and simplify loop unrolling code - handle slightly less trivial loop terminators. if branches can now have instructions but can only contain a single block. - use nir print type IR snippets in unroll function descriptions - add better explanation and variable for why we need to clone additional times when the second terminator it the limiting terminator. - partially convert out of ssa before unrolling loops (suggested by Jason) v6: - remove unused nir_builder - use Jasons new from ssa helper - tidy/fixup cursor use - unroll terminators that contain control flow correctly - unroll complex loops with control flow before the terminators correctly Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Add a LCSAA-passThomas Helland2016-12-231-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | V2: Do a "depth first search" to convert to LCSSA V3: Small comment fixup V4: Rebase, adapt to removal of function overloads V5: Rebase, adapt to relocation of nir to compiler/nir Still need to adapt to potential if-uses Work around nir_validate issue V6 (Timothy): - tidy lcssa and stop leaking memory - dont rewrite the src for the lcssa phi node - validate lcssa phi srcs to avoid postvalidate assert - don't add new phi if one already exists - more lcssa phi validation fixes - Rather than marking ssa defs inside a loop just mark blocks inside a loop. This is simpler and fixes lcssa for intrinsics which do not have a destination. - don't create LCSSA phis for loops we won't unroll - require loop metadata for lcssa pass - handle case were the ssa defs use outside the loop is already a phi V7: (Timothy) - pass indirect mask to metadata call v8: (Timothy) - make convert to lcssa a helper function rather than a nir pass - replace inside loop bitset with on the fly block index logic. - remove lcssa phi validation special cases - inline code from useless helpers, suggested by Jason. - always do lcssa on loops, suggested by Jason. - stop making lcssa phis special. Add as many source as the block has predecessors, suggested by Jason. V9: (Timothy) - fix regression with the is_lcssa_phi field not being initialised to false now that ralloc() doesn't zero out memory. V10: (Timothy) - remove extra braces in SSA example, pointed out by Topi V11: (Timothy) - add missing support for LCSSA phis in if conditions. V12: (Timothy) - small tidy up suggested by Jason. - always create lcssa phi even if it just points to an lcssa phi from an inner loop Reviewed-by: Jason Ekstrand <[email protected]>
* nir: Add a loop analysis passThomas Helland2016-12-231-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This pass detects induction variables and calculates the trip count of loops to be used for loop unrolling. V2: Rebase, adapt to removal of function overloads V3: (Timothy Arceri) - don't try to find trip count if loop terminator conditional is a phi - fix trip count for do-while loops - replace conditional type != alu assert with return - disable unrolling of loops with continues - multiple fixes to memory allocation, stop leaking and don't destroy structs we want to use for unrolling. - fix iteration count bugs when induction var not on RHS of condition - add FIXME for && conditions - calculate trip count for unsigned induction/limit vars V4: (Timothy Arceri) - count instructions in a loop - set the limiting_terminator even if we can't find the trip count for all terminators. This is needed for complex unrolling where we handle 2 terminators and the trip count is unknown for one of them. - restruct structs so we don't keep information not required after analysis and remove dead fields. - force unrolling in some cases as per the rules in the GLSL IR pass V5: (Timothy Arceri) - fix metadata mask value 0x10 vs 0x16 V6: (Timothy Arceri) - merge loop_variable and nir_loop_variable structs and lists suggested by Jason - remove induction var hash table and store pointer to induction information in the loop_variable suggested by Jason. - use lowercase list_addtail() suggested by Jason. - tidy up init_loop_block() as per Jasons suggestions. - replace switch with nir_op_infos[alu->op].num_inputs == 2 in is_var_basic_induction_var() as suggested by Jason. - use nir_block_last_instr() in and rename foreach_cf_node_ex_loop() as suggested by Jason. - fix else check for is_trivial_loop_terminator() as per Connors suggetions. - simplify offset for induction valiables incremented before the exit conditions is checked. - replace nir_op_isub check with assert() as it should have been lowered away. V7: (Timothy Arceri) - use rzalloc() on nir_loop struct creation. Worked previously because ralloc() was broken and always zeroed the struct. - fix cf_node_find_loop_jumps() to find jumps when loops contain nested if statements. Code is tidier as a result. V8: (Timothy Arceri) - move is_trivial_loop_terminator() to nir.h so we can use it to assert is the loop unroll pass - fix analysis to not bail when looking for terminator when the break is in the else rather then the if - added new loop terminator fields: break_block, continue_from_block and continue_from_then so we don't have to gather these when doing unrolling. - get correct array length when forcing unrolling of variables indexed arrays that are the same size as the iteration count - add support for induction variables of type float - update trival loop terminator check to allow an if containing instructions as long as both branches contain only a single block. V9: (Timothy) - bunch of tidy ups and simplifications suggested by Jason. - rewrote trivial terminator detection, now the only restriction is there must be no nested jumps, anything else goes. - rewrote the iteration test to use nir_eval_const_opcode(). - count instruction properly even when forcing an unroll. - bunch of other tidy ups and simplifications. V10: (Timothy) - some trivial tidy ups suggested by Jason. - conditional fix for break inside continue branch by Jason. Reviewed-by: Jason Ekstrand <[email protected]>
* glsl: Use simpler visitor to determine which UBO and SSBO blocks are usedIan Romanick2016-12-191-0/+2
| | | | | | | | | | | | | | | Very soon this visitor will get more complicated. The users of the existing ir_variable_refcount visitor won't need the coming functionality, and this use doesn't need much of the functionality of ir_variable_refcount. v2: ir_array_refcount_visitor::get_variable_entry cannot return NULL, so don't check it. Suggested by Timothy. Signed-off-by: Ian Romanick <[email protected]> Cc: [email protected] Reviewed-by: Timothy Arceri <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* nir: Add a pass for lowering away constant initializersJason Ekstrand2016-12-051-0/+1
| | | | Reviewed-by: Iago Toral Quiroga <[email protected]>
* nir: add a pass to compact clip/cull distances.Kenneth Graunke2016-11-221-0/+1
| | | | | | | v2: Use nir_is_per_vertex_io() rather than is_arrays_of_arrays(). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Jason Ekstrand <[email protected]>
* util: import cache.c/h from glslMarek Olšák2016-11-151-4/+0
| | | | | | | | | | It's not dependent on GLSL and it can be useful for shader caches that don't deal with GLSL. v2: address review comments v3: keep the other 3 lines in configure.ac Reviewed-by: Emil Velikov <[email protected]>
* glsl: automake: add opt_add_neg_to_sub.h to the sources listEmil Velikov2016-11-111-0/+1
| | | | | | Otherwise it'll be missing in the release tarball. Signed-off-by: Emil Velikov <[email protected]>
* glsl: Add a C++ code generator that uses ir_builder to rebuild a programIan Romanick2016-11-101-0/+2
| | | | | | | | | | | | | This is only in libstandalone currently because it will only be used in the stand-alone compiler. v2: Change the signature of the generated function. The ir_factory is created in the generator, and an availability predicate is taken as a parameter. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Iago Toral Quiroga <[email protected]> Reviewed-by: Nicolai Hähnle <[email protected]>
* nir: add conditional discard optimisation (v4)Dave Airlie2016-11-101-0/+1
| | | | | | | | | | | | | | | | | | | | | | | This is ported from GLSL and converts if (cond) discard; into discard_if(cond); This removes a block, but also is needed by radv to workaround a bug in the LLVM backend. v2: handle if (a) discard_if(b) (nha) cleanup and drop pointless loop (Matt) make sure there are no dependent phis (Eric) v3: make sure only one instruction in the then block. v4: remove sneaky tabs, add cursor init (Eric) Reviewed-by: Eric Anholt <[email protected]> Cc: "13.0" <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* compiler: automake: add shader_info.h to the sources listEmil Velikov2016-10-261-1/+2
| | | | | | | Otherwise it'll be missing from the tarball. Fixes: 094fe3a9591 ("nir: move nir_shader_info to a common compiler header") Signed-off-by: Emil Velikov <[email protected]>
* compiler: remove copy_shader_info()Timothy Arceri2016-10-261-3/+1
| | | | | | | This temporary helper is no longer needed now that we have finished refactoring common shader metadata. Reviewed-by: Jason Ekstrand <[email protected]>
* glsl: add temporary copy_shader_info() functionTimothy Arceri2016-10-261-1/+3
| | | | | | | | | | | | | This function is added here to ease refactoring towards using the new shared shader_info. Once refactoring is complete and values are set directly it will be removed. We call it from _mesa_copy_linked_program_data() rather than glsl_to_nir() so that the values will be set for all drivers. In order to do this some calls need to be moved around so that we make sure to call do_set_program_inouts() before _mesa_copy_linked_program_data() Reviewed-by: Jason Ekstrand <[email protected]>
* glsl: Remove unused function import_prototypesIan Romanick2016-10-171-1/+0
| | | | | | | | | | Once upon a time, this was used to extract prototypes from the shader containing GLSL built-in functions. This was removed by f5692f45 in November 2010 for Mesa 7.10. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Reviewed-by: Eric Engestrom <[email protected]>
* glsl: Add initial functions to implement an on-disk cacheTimothy Arceri2016-09-281-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This code provides for an on-disk cache of objects. Objects are stored and retrieved via names that are arbitrary 20-byte sequences, (intended to be SHA-1 hashes of something identifying for the content). The directory used for the cache can be specified by means of environment variables in the following priority order: $MESA_GLSL_CACHE_DIR $XDG_CACHE_HOME/mesa <user-home-directory>/.cache/mesa By default the cache will be limited to a maximum size of 1GB. The environment variable: $MESA_GLSL_CACHE_MAX_SIZE can be set (at the time of GL context creation) to choose some other size. This variable is a number that can optionally be followed by 'K', 'M', or 'G' to select a size in kilobytes, megabytes, or gigabytes. By default, an unadorned value will be interpreted as gigabytes. The cache will be entirely disabled at runtime if the variable MESA_GLSL_CACHE_DISABLE is set at the time of GL context creation. Many thanks to Kristian Høgsberg <[email protected]> for the initial implementation of code that led to this patch. In particular, the idea of using an mmapped file, (indexed by a portion of the SHA-1), for the efficent implementation of cache_has_key was entirely his idea. Kristian also provided some very helpful advice in discussions regarding various race conditions to be avoided in this code. Signed-off-by: Timothy Arceri <[email protected]> Reviewed-by: Eric Anholt <[email protected]>
* glsl: Use the generated constant expression codeIan Romanick2016-08-301-0/+1
| | | | | | | | | | | | | | Immediately previous to this patch, diff -wud src/glsl/ir_constant_expression.cpp \ src/glsl/ir_expression_operation_constant.h should be "minimal." v3: With much help from José Fonseca, fix the SCons build. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Generate ir_expression_operation_strings.h from PythonIan Romanick2016-08-301-1/+1
| | | | | | | | | | | | 'diff -ud' is clean. v2: Massive rebase. v3: With much help from José Fonseca, fix the SCons build. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]> Acked-by: Dylan Baker <[email protected]>
* glsl: Pull operator_strs out to its own fileIan Romanick2016-08-301-0/+1
| | | | | | | | | | No change except to the copyright symbol. The next patch will generate this file with Python, and Unicode + Python = pure rage. v2: Massive rebase. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Generate ir_expression_operation.h from PythonIan Romanick2016-08-301-1/+1
| | | | | | | | | | | | | There are differences in where end-of-line comments are placed, but 'diff -wud' is clean. v2: Massive rebase. v3: With much help from José Fonseca, fix SCons build. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]> Acked-by: Dylan Baker <[email protected]>
* glsl: Add a lowering pass to handle advanced blending modes.Kenneth Graunke2016-08-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Many GPUs cannot handle GL_KHR_blend_equation_advanced natively, and need to emulate it in the pixel shader. This lowering pass implements all the necessary math for advanced blending. It fetches the existing framebuffer value using the MESA_shader_framebuffer_fetch built-in variables, and the previous commit's state var uniform to select which equation to use. This is done at the GLSL IR level to make it easy for all drivers to implement the GL_KHR_blend_equation_advanced extension and share code. Drivers need to hook up MESA_shader_framebuffer_fetch functionality: 1. Hook up the fb_fetch_output variable 2. Implement BlendBarrier() Then to get KHR_blend_equation_advanced, they simply need to: 3. Disable hardware blending based on ctx->Color._AdvancedBlendEnabled 4. Call this lowering pass. Very little driver specific code should be required. v2: Handle multiple output variables per render target (which may exist due to ARB_enhanced_layouts), and array variables (even with one render target, we might have out vec4 color[1]), and non-vec4 variables (it's easier than finding spec text to justify not handling it). Thanks to Francisco Jerez for the feedback. v3: Lower main returns so that we have a single exit point where we can add our blending epilogue (caught by Francisco Jerez). Signed-off-by: Kenneth Graunke <[email protected]> Reviewed-by: Francisco Jerez <[email protected]>
* nir: Add an IO scalarizing pass using the intrinsic's first_component.Eric Anholt2016-08-191-0/+1
| | | | | | | | | | vc4 wants to have per-scalar IO load/stores so that dead code elimination can happen on a more granular basis, which it has been doing in the backend using a multiplication by 4 of the intrinsic's driver_location. We can represent it properly in the NIR using the first_component field, though. Reviewed-by: Kenneth Graunke <[email protected]>
* glsl: Pull enum ir_expression_operation out to its own fileIan Romanick2016-08-171-0/+1
| | | | | | | | | | No change except to the copyright symbol. The next patch will generate this file with Python, and Unicode + Python = pure rage. v2: Massive rebase... I guess a lot can change in a year. Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* glsl: Make the generated sources build rules more like NIRIan Romanick2016-08-171-2/+3
| | | | | Signed-off-by: Ian Romanick <[email protected]> Reviewed-by: Matt Turner <[email protected]>
* nir: Add a pass for propagating invariant decorationsJason Ekstrand2016-06-201-0/+1
| | | | | | | | | | This pass is similar to propagate_invariance in the GLSL compiler. The real "output" of this pass is that any algebraic operations which are eventually consumed by an invariant variable get marked as "exact". Signed-off-by: Jason Ekstrand <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]> Cc: "12.0" <[email protected]>
* nir/spirv: Add string lookup tables for a couple of SPIR-V enumsJason Ekstrand2016-06-031-0/+2
| | | | | Signed-off-by: Jason Ekstrand <[email protected]> Cc: "12.0" <[email protected]>
* nir: automake: add nir_search_helpers.h to the sources list(s)Emil Velikov2016-06-041-0/+1
| | | | | | Fixes: dfbae7d64f4 ("nir/algebraic: support for power-of-two optimizations") Signed-off-by: Emil Velikov <[email protected]>
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