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* mesa: don't initialize VBO vtxfmt in _vbo_CreateContextJordan Justen2012-12-164-10/+0
| | | | | | | | The driver should call _mesa_initialize_vbo_vtxfmt after computing the context version. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* mesa: don't initialize exec dispatch tables in _mesa_initialize_contextJordan Justen2012-12-161-3/+0
| | | | | | | | Drivers must compute the context version, and then call _mesa_initialize_exec_table themselves. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* mesa dispatch_sanity: call new functions to initialize exec tableJordan Justen2012-12-161-1/+6
| | | | | | | | | | | In a future patch the exec functions will no longer set up by _mesa_initialize_context and _vbo_CreateContext. Therefore we must call _mesa_initialize_exec_table and _mesa_initialize_exec_table_vbo. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* drivers: compute version and then initialize exec tableJordan Justen2012-12-1612-2/+81
| | | | | | | | This change forces the context version to be computed before initilizing the exec dispatch tables. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* vbo: add _mesa_initialize_vbo_vtxfmtJordan Justen2012-12-162-0/+19
| | | | | | | | This function initializes the exec/save dispatch tables for VBO vtxfmt. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* mesa: separate exec allocation from initializationJordan Justen2012-12-163-16/+15
| | | | | | | | | | | | | | | | | | | In glapi/gl_genexec.py: * Remove _mesa_alloc_dispatch_table call In glapi/gl_genexec.py and api_exec.h: * Rename _mesa_create_exec_table to _mesa_initialize_exec_table In context.c: * Call _mesa_alloc_dispatch_table instead of _mesa_create_exec_table * Call _mesa_initialize_exec_table (this is temporary) Once all drivers have been modified to call _mesa_initialize_exec_table, then the call to _mesa_initialize_context can be removed from context.c. Signed-off-by: Jordan Justen <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* r600g: fixup offset types for printingDave Airlie2012-12-162-4/+4
| | | | | | This allows the debug code to at least show the sign properly. Signed-off-by: Dave Airlie <[email protected]>
* gallium/u_blitter: Remove the overlapped blit assert from ↵Henri Verbeet2012-12-161-28/+0
| | | | | | | | | | | | util_blitter_blit_generic(). This is used by st_BlitFramebuffer() / r600_blit(), and ARB_fbo allows overlapped blits, even though the result is undefined. No piglit regressions on r600g / CYPRESS. Signed-off-by: Henri Verbeet <[email protected]> Reviewed-by: Michel Dänzer <[email protected]> Reviewed-by: Marek Olšák <[email protected]>
* glsl_parser_extras.cpp: fixup gl vs mem contexts again.Dave Airlie2012-12-161-4/+4
| | | | | | | | | This should fix: https://bugs.freedesktop.org/show_bug.cgi?id=58039 Tested-by: Darxus on bug 58039 Reviewed-by: Kenneth Graunke <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* i965: Move BRW_MAX_GRF and similar defines to brw_reg.h.Kenneth Graunke2012-12-152-18/+17
| | | | | | These don't really belong in brw_structs.h. Reviewed-by: Eric Anholt <[email protected]>
* i965: Split struct brw_reg out from brw_eu.h into its own header.Kenneth Graunke2012-12-152-709/+778
| | | | | | | | | | | | | | | | | | | struct brw_instruction and the related instruction emitting code won't be useful on Gen8+, as the instruction encoding changed. However, the struct brw_reg code is still extremely valuable. While we're at it, fix up some style points: - s/GLuint/unsigned/g - s/GLint/int/g - s/GLshort/int16_t/g - s/GLushort/uint16_t/g - s/INLINE/inline/g - Replace tabs with spaces - Put return types on a separate line from the function name/parameters - Remove trailing whitespace - Remove extraneous whitespace around function parameters Reviewed-by: Eric Anholt <[email protected]>
* st/mesa: add texture buffer object rgb32 support.Dave Airlie2012-12-161-1/+13
| | | | | | | This checks if the pipe driver can support RGB32 formats. Reviewed-by: Marek Olšák <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* mesa: add support for ARB_texture_buffer_object_rgb32Dave Airlie2012-12-163-0/+15
| | | | | | | | | | This adds the extensions + the tex buffer support for checking the formats. There is a piglit test enhancement sent to that list. Reviewed-by: Marek Olšák <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* glsl: avoid using gl context as a memory contextDave Airlie2012-12-151-4/+5
| | | | | | | | Not sure what was going on here, but running piglit with debug builds might be a good plan :-) Reviewed-by: Kenneth Graunke <[email protected]> Signed-off-by: Dave Airlie <[email protected]>
* i965: Add missing autoconf bits so test_vec4_register_coalesce will buildIan Romanick2012-12-141-0/+3
| | | | | Signed-off-by: Ian Romanick <[email protected]> Tested-by: Eric Anholt <[email protected]>
* i965: Generalize VS compute-to-MRF for compute-to-another-GRF, too.Eric Anholt2012-12-143-61/+128
| | | | | | | | | No statistically significant performance difference on glbenchmark 2.7 (n=60). It reduces cycles spent in the vertex shader by 3.3% +/- 0.8% (n=5), but that's only about .3% of all cycles spent according to the fixed shader_time. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/vs: Extend opt_compute_to_mrf to handle limited "reswizzling"Eric Anholt2012-12-143-9/+113
| | | | | | | | | | | | | The way our visitor works, scalar expression/swizzle results that get stored in channels other than .x will have an intermediate MOV from their result in the .x channel to the real .y (or whatever) channel, and similarly for vec2/vec3 results. By knowing how to adjust DP4-type instructions for optimizing out a swizzled MOV, we can reduce instructions in common matrix multiplication cases. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/vs: Add a unit test for opt_compute_to_mrf().Eric Anholt2012-12-143-2/+133
| | | | | | | | | | | | | The compute-to-mrf code is really twitchy, and it's hard to construct GLSL testcases for it. This unit test is also really hard to work with (for example, if your instruction is removed by dead code elimination, you end up inspecting something irrelevant), but I did use it for debugging some of the commits to follow. I called it test_vec4_register_coalesce because the compute-to-mrf code is about to morph into that. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Drop an unnecessary _safe on a list walk.Eric Anholt2012-12-141-1/+1
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Add a note explaining a detail of register_coalesce_2().Eric Anholt2012-12-141-0/+21
| | | | Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Also consider HALTs a potential block end.Eric Anholt2012-12-141-0/+1
| | | | | | | | The final halt of the fragment shader turns off the remaining channels, then jumps such that everything is turned back on. So, we can have our last ENDIF of the shader point at that directly. Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Jump to the end of the next outer conditional block on ENDIFs.Kenneth Graunke2012-12-141-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | From the Ivybridge PRM, Volume 4, Part 3, section 6.24 (page 172): "The endif instruction is also used to hop out of nested conditionals by jumping to the end of the next outer conditional block when all channels are disabled." Also: "Pseudocode: Evaluate(WrEn); if ( WrEn == 0 ) { // all channels false Jump(IP + JIP); }" First, ENDIF re-enables any channels that were disabled because they didn't match the conditional. If any channels are active, it proceeds to the next instruction (IP + 16). However, if they're all disabled, there's no point in walking through all of the instructions that have no effect---it can jump to the next instruction that might re-enable some channels (an ELSE, ENDIF, or WHILE). Previously, we always set JIP on ENDIF instructions to 2 (which is measured in 8-byte units). This made it do Jump(IP + 16), which just meant it would go to the next instruction even if all channels were off. It turns out that walking over instructions while all the channels are disabled like this is worse than just instruction dispatch overhead: if there are texturing messages, it still costs a couple hundred cycles to not-actually-read from the texture results. This patch finds the next instruction that could re-enable channels and sets JIP accordingly. Reviewed-by: Eric Anholt <[email protected]>
* i965: expose ARB_texture_cube_map_arrayChris Forbes2012-12-141-0/+1
| | | | | | | | | V3: Put enable in an existing block rather than making a new one for no good reason. Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Fix setup for textureGrad(samplerCubeArray, coord, dPdx, dPdy)Eric Anholt2012-12-141-7/+12
| | | | | | Caught by tex_grad-01.frag. Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Move the failure for gen7 16-wide intdiv to emit_math().Eric Anholt2012-12-142-7/+4
| | | | | | | The cube map array code adds another caller of emit_math(), which needs this check. Reviewed-by: Kenneth Graunke <[email protected]>
* i965: fs: Add fixup for textureSize on Gen6/7Chris Forbes2012-12-141-0/+11
| | | | | | | | | | | | | | | V2: Moved up into emit(ir_texture *) to avoid duplication and fix ordering for Gen7; Gen6 math quirks moved into previous patches. Tested on Gen6 only; passes all the cube_map_array piglits. V3: Fixed weird whitespace V4: Use sampler->type; otherwise broken on arrays of samplers. v5: Minor style fixes (by anholt) Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965: fs: fix gen6+ math operands in one placeChris Forbes2012-12-142-28/+33
| | | | | | | | | | V4: Fix various style nits as pointed out by Eric, and expand IMM operands on both Gen6 and Gen7. v5: minor style nits (by anholt) Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965: vs: Add fixup for textureSize with cube array samplersChris Forbes2012-12-141-0/+13
| | | | | | | | | | | V3: Fixed weird whitespace V4: Use sampler's type rather than variable's type; otherwise broken with arrays of samplers. (Thanks Eric) v5: Fix a couple more style nits (by anholt) Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965/vs: Fix gen6+ math operand quirks in one placeChris Forbes2012-12-142-34/+28
| | | | | | | | | | | This causes immediate values to get moved to a temp on gen7, which is needed for an upcoming change but hadn't happened in the visitor until then. v2: Drop gen > 7 checks (doesn't exist), and style-fix comments (changes by anholt). Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965: Add various plumbing for cubemap arraysChris Forbes2012-12-145-3/+11
| | | | | | | | V4: Fixed style nits Signed-off-by: Chris Forbes <[email protected]> Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Kenneth Graunke <[email protected]>
* i965/fs: Add empirically-determined instruction latencies for gen7.Eric Anholt2012-12-141-3/+179
| | | | | | | | | | | | | | | | v2: Actually switch on the other math instructions mentioned in the comment. v3: Add timing data for textureSize(), and clean up some long comment lines. Testing shader_time of fs16 shaders on a few frames of various apps: nexuiz improved by 2.9% +/- 1.5% (n=10) no difference on GLB2.5 (n=36, outliers removed) no difference on GLB2.7 (n=25) etqw improved by 2.6% +/- 2.2% (n=25) no difference on lightsmark (n=25) Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Fix the clock increment in scheduling.Eric Anholt2012-12-141-3/+15
| | | | | | | I've tested this to be true with various ALU ops on gen7 (with the exception of MADs, which go at either 3 or 4 cycles per dispatch). Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Move the old gen4 bspec-based scheduling info to a helper func.Eric Anholt2012-12-141-33/+41
| | | | | | For gen7 everything changes, and we have actual information on latency. Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Set up gen7 UBO loads as sends from GRFs.Eric Anholt2012-12-145-7/+114
| | | | | | | | | | | | This gives the instruction scheduler a chance to schedule between the loads, whereas before it was restricted due to the dependencies between the MRFs for setting them up. For one shader in gles3conform, it goes from getting stuck in register allocation for as long as anybody's bothered to leave it running down to 23 seconds, thanks to the LIFO scheduling. Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Before reg alloc, schedule instructions to reduce live ranges.Eric Anholt2012-12-141-6/+41
| | | | | | | | | | | | | | | | | | | | | | | | | This came from an idea by Ben Segovia. 16-wide pixel shaders are very important for latency hiding on i965, so we want to try really hard to get them. If scheduling an instruction makes some set of instructions available, those are probably the ones that make the instruction's result dead. By choosing those first, we'll have a tendency to reduce the amount of live data as opposed to creating more. Previously, we were sometimes getting this behavior out of the scheduler, which was what produced the scheduler's original performance wins on lightsmark. Unfortunately, that was mostly an accident of the lame instruction latency information that I had, which made it impossible to fix the actual scheduling for performance. Now that we've fixed the scheduling for setup for register allocation, we can safely update the latency parameters for the final schedule. In shader-db, we lose 37 16-wide shaders, but gain 90 new ones. 4 shaders that were spilling change how many registers spill, for a reduction of 70/3899 instructions. v2: Simplify the new loop. Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Add some optional debug printfs to scheduling.Eric Anholt2012-12-141-0/+21
| | | | | | Seeing when instructions become available to schedule is really useful. Acked-by: Kenneth Graunke <[email protected]>
* i965/fs: Schedule instructions both before and after register allocation.Eric Anholt2012-12-143-18/+78
| | | | Acked-by: Kenneth Graunke <[email protected]>
* i965: Make sure that the shader_time report at context destroy happens.Eric Anholt2012-12-141-0/+3
| | | | | | Otherwise, you end up with some report from within a second of context destroy, which is now what you really want for testing the impact of changes
* i965: Print a total time for the different shader stages.Eric Anholt2012-12-141-10/+38
| | | | | | | | | Sometimes I've got a patch for a performance optimization that's not showing a statistically significant performance difference on reported FPS, but still seems like a good idea because it ought to reduce time spent in the shader. If I can see the total number of cycles spent in the shader stage being optimized, it may show that the patch is still worthwhile (or point out that it's actually broken in some way).
* i965: Scale shader_time to compensate for resets.Eric Anholt2012-12-144-9/+83
| | | | | | | | | | Some shaders experience resets more than others, which skews the numbers reported. Attempt to correct for this by linearly scaling according to the number of resets that happen. Note that will not be accurate if invocations of shaders have varying times and longer invocations are more likely to reset. However, this should at least be better than the previous situation.
* i965: Adjust the split between shader_time_end() and shader_time_write().Eric Anholt2012-12-144-51/+55
| | | | | | I'm about to emit other kinds of writes besides time deltas, and it turns out with the frequency of resets, we couldn't really use the old time delta write() function more than once in a shader.
* glsl/linker: Pack between varyings.Paul Berry2012-12-141-15/+35
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements varying packing between varyings. Previously, each varying occupied components 0 through N-1 of its assigned varying slot, so there was no way to pack two varyings into the same slot. For example, if the varyings were a float, a vec2, a vec3, and another vec2, they would be stored as follows: <----slot1----> <----slot2----> <----slot3----> <----slot4----> slots * * * * * * * * * * * * * * * * flt x x x <vec2-> x x <--vec3---> x <vec2-> x x varyings (Each * represents a varying component, and the "x"s represent wasted space). This change packs the varyings together to eliminate wasted space between varyings, like so: <----slot1----> <----slot2----> <----slot3----> <----slot4----> slots * * * * * * * * * * * * * * * * <vec2-> <vec2-> flt <--vec3---> x x x x x x x x varyings Note that we take advantage of the sort order introduced in previous patches (vec4's first, then vec2's, then scalars, then vec3's) to minimize how often a varying is "double parked" (split across varying slots). Reviewed-by: Eric Anholt <[email protected]> v2: Skip varying packing if ctx->Const.DisableVaryingPacking is true.
* glsl/linker: Pack within compound varyings.Paul Berry2012-12-141-37/+56
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch implements varying packing within varyings that are composed of multiple vectors of size less than 4 (e.g. arrays of vec2's, or matrices with height less than 4). Previously, such varyings used up a full 4-wide varying slot for each constituent vector, meaning that some of the components of each varying slot went unused. For example, a mat4x3 would be stored as follows: <----slot1----> <----slot2----> <----slot3----> <----slot4----> slots * * * * * * * * * * * * * * * * <-column1-> x <-column2-> x <-column3-> x <-column4-> x matrix (Each * represents a varying component, and the "x"s represent wasted space). In addition to wasting precious varying components, this layout complicated transform feedback, since the constituents of the varying are expected to be output to the transform feedback buffer contiguously (e.g. without gaps between the columns, in the case of a matrix). This change packs the constituents of each varying together so that all wasted space is at the end. For the mat4x3 example, this looks like so: <----slot1----> <----slot2----> <----slot3----> <----slot4----> slots * * * * * * * * * * * * * * * * <-column1-> <-column2-> <-column3-> <-column4-> x x x x matrix Note that matrix columns 2 and 3 now cross a boundary between varying slots (a characteristic I call "double parking" of a varying). We don't bother trying to eliminate the wasted space at the end of the varying, since the patch that follows will take care of that. Since compiler back-ends don't (yet) support this packed layout, the lower_packed_varyings function is used to rewrite the shader into a form where each varying occupies a full varying slot. Later, if we add native back-end support for varying packing, we can make this lowering pass optional. Reviewed-by: Eric Anholt <[email protected]> v2: Skip varying packing if ctx->Const.DisableVaryingPacking is true.
* gallium: Disable varying packing on hardware with <=8 texture indirections.Paul Berry2012-12-141-0/+14
| | | | | | | In practice this will disable varying packing on R300, R400, i915g, and nv30. Reviewed-by: Marek Olšák <[email protected]>
* mesa: Add an option so driver can opt out of varying packing.Paul Berry2012-12-141-0/+11
| | | | | | | | | | | | | | On hardware that supports a limited number of texture indirections, varying packing will comsume an extra texture indirection, since ALU operations are needed in the fragment shader to unpack the varyings before any texturing can be done. This patch introduces a new driver option, ctx->Const.DisableVaryingPacking, which can be used by a driver to opt out of varying packing if the extra texture indirection is costly enough to outweigh the advantages of packing varyings. Reviewed-by: Marek Olšák <[email protected]>
* glsl: Add a lowering pass for packing varyings.Paul Berry2012-12-143-0/+368
| | | | | | | | | | | | | | This lowering pass generates GLSL code that manually packs varyings into vec4 slots, for the benefit of back-ends that don't support packed varyings natively. No functional change--the lowering pass is not yet used. Reviewed-by: Eric Anholt <[email protected]> v2: Don't use ir_hierarchical_visitor--just loop over instructions directly. Also, make the names of the packed varyings include the names of the original varyings that were packed into them.
* glsl/linker: Sort varyings by packing class, then vector size.Paul Berry2012-12-141-0/+104
| | | | | | | | | | | | | | | | | | | | | | | | | | | This patch paves the way for varying packing by adding a sorting step before varying assignment, which sorts the varyings into an order that increases the likelihood of being able to find an efficient packing. First, varyings are sorted into "packing classes" by considering attributes that can't be mixed during varying packing--at the moment this includes base type (float/int/uint/bool) and interpolation mode (smooth/noperspective/flat/centroid), though later we will hopefully be able to relax some of these restrictions. The number of packing classes places an upper limit on the amount of space that must be wasted by varying packing, since in theory a shader might nave 4n+1 components worth of varyings in each of m packing classes, resulting in 3m components worth of wasted space. Then, within each packing class, varyings are sorted by vector size, with vec4's coming first, then vec2's, then scalars, and then finally vec3's. The motivation for this order is that it ensures that the only vectors that might be "double parked" (with part of the vector in one varying slot and the remainder in another) are vec3's. Note that the varyings aren't actually packed yet, merely placed in an order that will facilitate packing. Reviewed-by: Eric Anholt <[email protected]>
* glsl/linker: Subdivide the first phase of varying assignment.Paul Berry2012-12-141-44/+163
| | | | | | | | | | | | | | | | | This patch further subdivides the loop that assigns varying locations into two phases: one phase to match up the varyings between shader stages, and one phase to assign them varying locations. In between the two phases the matched varyings are stored in a new data structure called varying_matches. This will free us to be able to assign varying locations in any order, which will pave the way for packing varyings. Note that the new varying_matches::assign_locations() function returns the number of varying slots that were used; this return value will be used in a future patch. Reviewed-by: Eric Anholt <[email protected]>
* glsl/linker: Defer recording transform feedback locations.Paul Berry2012-12-141-55/+48
| | | | | | | | | | | | | | | | | This patch subdivides the loop that assigns varying locations into two phases: one phase to match up varyings between shader stages (and assign them varying locations), and a second phase to record the varying assignments for use by transform feedback. This paves the way for varying packing, which will require us to further subdivide the first phase. In addition, it lets us avoid a clumsy O(n^2) algorithm, since we can now record the locations of all transform feedback varyings in a single pass through the tfeedback_decls array, rather than have to iterate through the array after assigning each varying. Reviewed-by: Eric Anholt <[email protected]>
* glsl: Create a field to store fractional varying locations.Paul Berry2012-12-143-2/+14
| | | | | | | | | | | | | | | Currently, the location of each varying is recorded in ir_variable as a multiple of the size of a vec4. In order to pack varyings, we need to be able to record, e.g. that a vec2 is stored in the second half of a varying slot rather than the first half. This patch introduces a field ir_variable::location_frac, which represents the offset within a vec4 where a varying's value is stored. Varyings that are not subject to packing will always have a location_frac value of zero. Reviewed-by: Eric Anholt <[email protected]> Reviewed-by: Ian Romanick <[email protected]>
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