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* gallium: Add support for 32x32 muls with 64 bit resultsZack Rusin2013-10-091-0/+30
| | | | | | | | | | | | | | The code introduces two new 32bit integer multiplication opcodes which can be used to produce correct 64 bit results. GLSL, OpenCL and D3D10+ require them. We use two seperate opcodes, because they match the behavior of GLSL and OpenCL, are a lot easier to add than a single opcode with multiple destinations and because there's not much (any) difference wrt code-generation. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: José Fonseca <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* gallium/docs: update bind_sampler_states() documentationBrian Paul2013-10-031-5/+6
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* gallium: add flush_resource context functionMarek Olšák2013-09-201-0/+13
| | | | | | | | | r600g needs explicit flushing before DRI2 buffers are presented on the screen. v2: add (stub) implementations for all drivers, fix frontbuffer flushing v3: fix galahad Signed-off-by: Marek Olšák <[email protected]>
* draw: clean up setting stream out information a bitRoland Scheidegger2013-08-271-0/+2
| | | | | | | | | | | | | | | | | In particular noone is interested in the vertex count, so drop that, and also drop the duplicated num_primitives_generated / so.primitives_storage_needed variables in drivers. I am unable for now to figure out if primitives_storage_needed in SO stats (used for d3d10) should increase if SO is disabled, though the equivalent num_primitives_generated used for OpenGL definitely should increase. In any case we were only counting when SO is active both in softpipe and llvmpipe anyway so don't pretend there's an independent num_primitives_generated counter which would count always. (This means the PIPE_QUERY_PRIMITIVES_GENERATED count will still be wrong just as before, should eventually fix this by doing either separate counting for this query or adjust the code so it always counts this even if SO is inactive depending on what's correct for d3d10.) Reviewed-by: Brian Paul <[email protected]>
* gallium: add new float comparison instructions returning integer masksRoland Scheidegger2013-08-131-16/+76
| | | | | | | | | | | | Newer graphic languages don't want messy float mask results but instead true "boolean" mask results for float comparisons. Otherwise just need to convert the floats back to integers. Need to keep the old opcodes however due to both legacy (gl and d3d9) needing them and because older hw can't really deal with integers. These new FSEQ/FSGE/FSLT/FSNE opcodes are part of integer API and hence must be supported if a driver claims to support glsl 1.30 (or PIPE_SHADER_CAP_INTEGERS). Reviewed-by: Zack Rusin <[email protected]>
* gallium: clarify SVIEWINFO opcodeRoland Scheidegger2013-08-081-1/+9
| | | | | | | | | | | | This opcode is quite problematic in tgsi, while it tries to mirror d3d10 resinfo it can't really do what's stated there due to missing the crazy return type modifiers. Hence specify this is ignored along with the swizzle. (Other options would be to have multiple opcodes or specify the ret type modifier maybe in dst_reg as there's padding bits left there but it is the only instruction allowing this.) Reviewed-by: Zack Rusin <[email protected]>
* gallium: clarify shift behavior with shift count >= 32Roland Scheidegger2013-08-021-12/+18
| | | | | | | | | | | | | | | | | | Previously, nothing was said what happens with shift counts exceeding bit width of the values to shift. In theory 3 behaviors are possible: 1) undefined (classic c definition) 2) just shift out all bits (so result is zero, or -1 potentially for ashr) 3) mask the shift count to bit width - 1 API's either require 3) or are ok with 1). In particular, GLSL (as well as a couple uninteresting legacy GL extensions) is happy with undefined, whereas both OpenCL and d3d10 require 3). Consequently, most hw also implements 3). So, for simplicity we just specify that 3) is required rather than saying undefined and then needing state trackers to work around it. Also while here specify shift count as a vector, not scalar. As far as I can tell this was a doc bug, neither state trackers nor drivers used scalar shift count. Reviewed-by: Jose Fonseca <[email protected]>
* gallium/docs: clarify definition of PIPE_CAP_USER_CONSTANT_BUFFERS, etcBrian Paul2013-07-311-5/+8
| | | | | | | | | | | The cap means _can_ accept user-space constant buffers; it doesn't mean _only_ accepts user-space constant buffers. v2: also update the PIPE_CAP_USER_VERTEX_BUFFERS and PIPE_CAP_USER_INDEX_BUFFERS descriptions as well. Per Jose. Reviewed-by: Marek Olšák <[email protected]> Reviewed-by: José Fonseca <[email protected]>
* gallivm: handle texel swizzles correctly for d3d10-style sample opcodesRoland Scheidegger2013-07-271-0/+2
| | | | | | | | | | | unlike OpenGL, the texel swizzle is embedded in the instruction, so honor that. (Technically we now execute both the sampler_view swizzle and the per-instruction swizzle but this should be quite ok.) v2: add documentation note as it's not obvious. Reviewed-by: Jose Fonseca <[email protected]>
* gallium: Add PIPE_CAP_ENDIANNESSTom Stellard2013-07-221-0/+2
| | | | | | Cc: [email protected] [ Francisco Jerez: Fix "PIPE_ENDIAN_SMALL" in the documentation, define PIPE_ENDIAN_NATIVE. ]
* gallium: fixup definitions of the rsq and sqrtZack Rusin2013-07-111-3/+3
| | | | | | | | | | | | GLSL spec says that rsq is undefined for src<=0, but the D3D10 spec says it needs to be a NaN, so lets stop taking an absolute value of the source which completely breaks that behavior. For the gl program we can simply insert an extra abs instrunction which produces the desired behavior there. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Reviewed-by: Brian Paul <[email protected]>
* tgsi: rename the TGSI fragment kill opcodesBrian Paul2013-07-121-2/+4
| | | | | | | | | | | | | | | | | | | | | TGSI_OPCODE_KIL and KILP had confusing names. The former was conditional kill (if any src component < 0). The later was unconditional kill. At one time KILP was supposed to work with NV-style condition codes/predicates but we never had that in TGSI. This patch renames both opcodes: TGSI_OPCODE_KIL -> KILL_IF (kill if src.xyzw < 0) TGSI_OPCODE_KILP -> KILL (unconditional kill) Note: I didn't just transpose the opcode names to help ensure that I didn't miss updating any code anywhere. I believe I've updated all the relevant code and comments but I'm not 100% sure that some drivers had this right in the first place. For example, the radeon driver might have llvm.AMDGPU.kill and llvm.AMDGPU.kilp mixed up. Driver authors should review their code. Reviewed-by: Jose Fonseca <[email protected]>
* tgsi: fix-up KILP commentsBrian Paul2013-07-121-5/+5
| | | | | | | | KILP is really unconditional fragment kill. We've had KIL and KILP transposed forever. I'll fix that next. Reviewed-by: Jose Fonseca <[email protected]>
* gallium: Fix llvmpipe on big-endian machinesAdam Jackson2013-06-241-0/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Squashed commit of the following: commit 0857a7e105bfcbc4d1431b2cc56612094c747ca3 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:07 2013 -0400 gallivm: Fix lp_build_rgba8_to_fi32_soa for big endian Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 0d65131649a8aa140e2db228ba779d685c4333e3 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:07 2013 -0400 gallivm: Fix big-endian machines This adds a bit-shift count to the format table, and adds the concept of vector or bitwise alignment on gathers. Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 9740bda9b7dc894b629ed38be9b51059ce90818f Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:07 2013 -0400 llvmpipe: Fix convert_to_blend_type on big-endian Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit ae037c2de0f029e4e99371c0de25560484f0d8df Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 util: Convert color pack to packed formats This fixes them on big-endian. Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 5b05ac0c89ae092ea8ba5bba9f739708d7396b5c Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 graw-xlib: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 51396e7d098cb6ff794391cf11afe4dbf86dbea0 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 format: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 417b60bc66eb450e68a92ab0e47f76e292b385e6 Author: Adam Jackson <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 st/dri: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 0934b2e022a5e0847d312c40734e2b44cac52fd8 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 st/xlib: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit a307ea3c3716a706963acce7966b5e405ba11db9 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 gbm: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 53eebdd253e1960a645ea278f31d7ef6a6cf4aeb Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 tests: Convert to packed formats Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 2f77fe3ee524945eacd546efcac34f7799fb3124 Author: Adam Jackson <[email protected]> Date: Tue Jun 18 13:07:37 2013 -0400 gallium: Document packed formats Signed-off-by: Adam Jackson <[email protected]> commit 1f1017159ce951f922210a430de9229f91f62714 Author: Richard Sandiford <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 gallium: Introduce 32-bit packed format names These are for interacting with buffers natively described in terms of bit shifts, like X11 visuals: uint32_t xyzw8888 = (x << 0) | (y << 8) | (z << 16) | (w << 24); Define these in terms of (endian-dependent) aliases to the array-style format names. Reviewed-by: Adam Jackson <[email protected]> Signed-off-by: Richard Sandiford <[email protected]> commit 6cc7ab1ee66ed668da78c1d951dfd7782b4e786a Author: Adam Jackson <[email protected]> Date: Mon Jun 3 12:10:32 2013 -0400 gallium: Document format name conventions v2: - Fix a channel name thinko (Michel Dänzer) - Elaborate on SCALED versus INT - Add links to DirectX and FOURCC docs Signed-off-by: Adam Jackson <[email protected]> commit df4d269e7fb62051a3c029b84147465001e5776e Author: Adam Jackson <[email protected]> Date: Tue Jun 18 12:25:06 2013 -0400 gallivm: Remove all notion of byte-swapping Signed-off-by: Adam Jackson <[email protected]> Signed-off-by: Adam Jackson <[email protected]>
* gallium/docs: more documentation for pipe_resource::array_sizeBrian Paul2013-06-221-0/+6
| | | | | | | It should never be zero and for cube/cube_arrays it should be a multiple of six. Reviewed-by: Roland Scheidegger <[email protected]>
* gallium: fix PIPE_QUERY_TIMESTAMP_DISJOINTRoland Scheidegger2013-06-191-4/+6
| | | | | | | | | | | The semantics didn't really make sense, not really matching neither d3d9 (though the docs are all broken there) nor d3d10. So make it match d3d10 semantics, which actually gives meaning to the "disjoint" part. Drivers are fixed up in a very primitive way, I have no idea what could actually cause the counter to become unreliable so just always return FALSE for the disjoint part. Reviewed-by: Jose Fonseca <[email protected]>
* gallium: add condition parameter to render_conditionRoland Scheidegger2013-06-181-5/+9
| | | | | | | | | | | | | For conditional rendering this makes it possible to skip rendering if either the predicate is true or false, as supported by d3d10 (in fact previously it was sort of implied skip rendering if predicate is false for occlusion predicate, and true for so_overflow predicate). There's no cap bit for this as presumably all drivers could do it trivially (but this patch does not implement it for the drivers using true hw predicates, nvxx, r600, radeonsi, no change is expected for OpenGL functionality). Reviewed-by: Jose Fonseca <[email protected]>
* gallium/draw: add limits to the clip and cull distancesZack Rusin2013-06-131-0/+23
| | | | | | | | | | | There are strict limits on those registers. Define the maximums and use them instead of magic numbers. Also allows us to add some extra sanity checks. Suggested by Brian. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]> Reviewed-by: Jose Fonseca <[email protected]>
* gallium: add a cull distance semanticZack Rusin2013-06-101-0/+11
| | | | | | | | | | | | | cull distance is analogous to clip distance. If a register is given this semantic, then the values in it are assumed to be a float32 distance to a plane. Primitives will be completely discarded if the plane distance for all of the vertices in the primitive are < 0. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Jose Fonseca <[email protected]> Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]>
* gallium/docs: fix up transfer description for 1d arrays, add cube map arraysRoland Scheidegger2013-06-071-5/+4
| | | | | | | | | | | Transfers always use z/depth for layers no matter if it's a 1d or 2d array texture, we don't follow OpenGL's crazyness there. Luckily this appears to only be a doc bug, everyone doing the right thing already. While here also document z/depth parameter for cube map arrays. v2: fix typo spotted by Eric Anholt Reviewed-by: Jose Fonseca <[email protected]>
* gallium: add support for layered renderingRoland Scheidegger2013-06-011-2/+20
| | | | | | | | | | Since pipe_surface already has all the necessary fields no interface changes are necessary except adding a new shader semantic value (TGSI_SEMANTIC_LAYER). (Note that what GL knows as "gl_Layer" variable d3d10 is naming "RENDER_TARGET_ARRAY_INDEX".) v2: drop cap bit (just tied to geometry shader), add docs.
* gallium/docs: adds documentation for multi viewport capZack Rusin2013-05-251-0/+4
| | | | | Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]>
* gallium: Add support for multiple viewportsZack Rusin2013-05-251-3/+5
| | | | | | | | | | | | Gallium supported only a single viewport/scissor combination. This commit changes the interface to allow us to add support for multiple viewports/scissors. Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: Marek Olšák <[email protected]> Reviewed-by: José Fonseca<[email protected]> Reviewed-by: Brian Paul <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]>
* gallium: add PIPE_CAP_MAX_TEXTURE_BUFFER_SIZE for GLMarek Olšák2013-05-111-0/+2
| | | | | | v2: fix typo 65535 -> 65536 Reviewed-by: Brian Paul <[email protected]>
* gallium: more tgsi documentation updatesRoland Scheidegger2013-05-071-131/+250
| | | | | | | | | Adds the remaining integer opcodes, and some opcodes are moved to more appropriate places, along with getting rid of the (already nearly empty) ps_2_x section. Though the CAP bits for some of these are still a bit in the air so the documentation isn't quite as watertight as is desirable. Reviewed-by: Jose Fonseca <[email protected]>
* gallium: tgsi documentation updates and clarification for integer opcodes.Roland Scheidegger2013-05-031-73/+289
| | | | | | | A lot of them were missing. Others were moved from the Compute ISA to a new Integer ISA section as that seemed more appropriate. Reviewed-by: Jose Fonseca <[email protected]>
* tgsi: allow negation of all integer typesZack Rusin2013-05-021-5/+2
| | | | | | | | | | It's valid because we reuse certain arithmetic operations for both signed and unsigned types (e.g. uadd, umad, which have a bit unfortunate naming) Signed-off-by: Zack Rusin <[email protected]> Reviewed-by: José Fonseca <[email protected]> Reviewed-by: Roland Scheidegger <[email protected]>
* gallium: Replace gl_rasterization_rules with lower_left_origin and ↵José Fonseca2013-04-232-4/+71
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | half_pixel_center. Squashed commit of the following: commit 04c5fa2cbb8e89d6f2fa5a75af1cca03b1f6b852 Author: José Fonseca <[email protected]> Date: Tue Apr 23 17:37:18 2013 +0100 gallium: s/lower_left_origin/bottom_edge_rule/ commit 4dff4f64fa83b9737def136fffd161d55e4f1722 Author: José Fonseca <[email protected]> Date: Tue Apr 23 17:35:04 2013 +0100 gallium: Move diagram to docs. commit 442a63012c8c3c3797f45e03f2ca20ad5f399832 Author: James Benton <[email protected]> Date: Fri May 11 17:50:55 2012 +0100 gallium: Replace gl_rasterization_rules with lower_left_origin and half_pixel_center. This change is necessary to achieve correct results when using OpenGL FBOs. Reviewed-by: Marek Olšák <[email protected]>
* gallium: Add a new clip_halfz rasterizer state.José Fonseca2013-04-221-0/+4
| | | | | | gl_rasterization_rules lumps too many different flags. Reviewed-by: Brian Paul <[email protected]>
* gallium: document breakc and switch/case/default/endswitchRoland Scheidegger2013-04-201-6/+51
| | | | | | | docs were missing, especially the opcode-from-hell switch however is anything but obvious. Reviewed-by: Jose Fonseca <[email protected]>
* st/mesa: optionally apply texture swizzle to border color v2Christoph Bumiller2013-04-182-2/+15
| | | | | | | | | | | | This is the only sane solution for nv50 and nvc0 (really, trust me), but since on other hardware the border colour is tightly coupled with texture state they'd have to undo the swizzle, so I've added a cap. The dependency of update_sampler on the texture updates was introduced to avoid doing the apply_depthmode to the swizzle twice. v2: Moved swizzling helper to u_format.c, extended the CAP to provide more accurate information.
* gallium: Disambiguate TGSI_OPCODE_IF.José Fonseca2013-04-171-4/+17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TGSI_OPCODE_IF condition had two possible interpretations: - src.x != 0.0f - Mesa statetracker when PIPE_SHADER_CAP_INTEGERS was false either for vertex and fragment shaders - gallivm/llvmpipe - postprocess - vl state tracker - vega state tracker - most old drivers - old internal state trackers - many graw examples - src.x != 0U - Mesa statetracker when PIPE_SHADER_CAP_INTEGERS was true for both vertex and fragment shaders - tgsi_exec/softpipe - r600 - radeonsi - nv50 And drivers that use draw module also were a mess (because Mesa would emit float IFs, but draw module supports native integers so it would interpret IF arg as integers...) This sort of works if the source argument is limited to float +0.0f or +1.0f, integer 0, but would fail if source is float -0.0f, or integer in the float NaN range. It could also fail if source is integer 1, and hardware flushes denormalized numbers to zero. But with this change there are now two opcodes, IF and UIF, with clear meaning. Drivers that do not support native integers do not need to worry about UIF. However, for backwards compatibility with old state trackers and examples, it is advisable that native integer capable drivers also support the float IF opcode. I tried to implement this for r600 and radeonsi based on the surrounding code. I couldn't do this for nouveau, so I just shunted IF/UIF together, which matches the current behavior. Reviewed-by: Roland Scheidegger <[email protected]> Reviewed-by: Marek Olšák <[email protected]> v2: - Incorporate Roland's feedback. - Fix r600_shader.c merge conflict. - Fix typo in radeon, spotted by Michel Dänzer. - Incorporte Christoph Bumiller's patch to handle TGSI_OPCODE_IF(float) properly in nv50/ir.
* gallium: Eliminate TGSI_OPCODE_IFC.José Fonseca2013-04-171-5/+0
| | | | | | Never used or implemented. Reviewed-by: Roland Scheidegger <[email protected]>
* gallium: PIPE_COMPUTE_CAP_IR_TARGET - allow drivers to specify a processor v2Tom Stellard2013-04-051-4/+4
| | | | | | | | | | | | This target string now contains four values instead of three. The old processor field (which was really being interpreted as arch) has been split into two fields: processor and arch. This allows drivers to pass a more a more detailed description of the hardware to compiler frontends. v2: - Adapt to libclc changes Reviewed-by: Francisco Jerez <[email protected]>
* freedreno: document debug flagErik Faye-Lund2013-04-041-0/+4
| | | | | Signed-off-by: Erik Faye-Lund <[email protected]> Signed-off-by: Brian Paul <[email protected]>
* gallium/docs: fix definition of PIPE_QUERY_SO_STATISTICSChristoph Bumiller2013-04-031-3/+5
| | | | Reviewed-by: Marek Olšák <[email protected]>
* gallium: add PIPE_CAP_QUERY_PIPELINE_STATISTICSChristoph Bumiller2013-04-031-0/+2
| | | | Reviewed-by: Marek Olšák <[email protected]>
* gallium/docs: document get_driver_query_infoMarek Olšák2013-03-261-0/+12
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* gallium,st/mesa: don't use blit-based transfers with software rasterizersMarek Olšák2013-03-231-0/+4
| | | | | | | | | The blit-based paths for TexImage, GetTexImage, and ReadPixels aren't very fast with software rasterizer. Now Gallium drivers have the ability to turn them off. Reviewed-by: Brian Paul <[email protected]> Tested-by: Brian Paul <[email protected]>
* gallium: add TGSI_SEMANTIC_TEXCOORD,PCOORD v3Christoph Bumiller2013-03-203-0/+42
| | | | | | | | | | | | | | | This makes it possible to identify gl_TexCoord and gl_PointCoord for drivers where sprite coordinate replacement is restricted. The new PIPE_CAP_TGSI_TEXCOORD decides whether these varyings should be hidden behind the GENERIC semantic or not. With this patch only nvc0 and nv30 will request that they be used. v2: introduce a CAP so other drivers don't have to bother with the new semantic v3: adapt to introduction gl_varying_slot enum
* tgsi: add ArrayID documentation v2Christian König2013-03-191-0/+18
| | | | | | v2: further improve the text with comments from Christoph Bumiller. Signed-off-by: Christian König <[email protected]>
* d3d1x: Remove.José Fonseca2013-03-121-1/+1
| | | | | | Unused/unmaintained. Reviewed-by: Christoph Bumiller <[email protected]>
* gallium/docs: improve text about resources a bit.Roland Scheidegger2013-02-221-29/+33
| | | | | | | | | | | This clarifies some things and gets rid of some old stuff. The most significant one is probably that buffers cannot have formats (nearly all drivers completely ignored format and used width0 as byte size already in any case). There seems to be no use case for "structured" buffers. (Note while d3d11 has new Structured Buffers, these still aren't associated with a format, rather a byte stride, which we can't do yet either way.) Reviewed-by: Jose Fonseca <[email protected]>
* gallivm/tgsi: fix src modifier fetching with non-float types.Roland Scheidegger2013-02-161-0/+15
| | | | | | | | | | | | | | Need to take the type into account. Also, if we want to allow mov's with modifiers we need to pick a type (assume float). v2: don't allow all modifiers on all type, in particular don't allow absolute on non-float types and don't allow negate on unsigned. Also treat UADD as signed (despite the name) since it is used for handling both signed and unsigned integer arguments and otherwise modifiers don't work. Also add tgsi docs clarifying this. Reviewed-by: Jose Fonseca <[email protected]>
* gallium/docs: fix typos in sample opcode descriptionsRoland Scheidegger2013-02-121-2/+3
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* gallium: fix tgsi SAMPLE_L opcode to use separate source for explicit lodRoland Scheidegger2013-02-121-4/+3
| | | | | | | | | | | | | | | | | | | | | It looks like using coord.w as explicit lod value is a mistake, most likely because some dx10 docs had it specified that way. Seems this was changed though: http://msdn.microsoft.com/en-us/library/windows/desktop/hh447229%28v=vs.85%29.aspx - let's just hope it doesn't depend on runtime build version or something. Not only would this need translation (so go against the stated goal these opcodes should be close to dx10 semantics) but it would prevent usage of this opcode with cube arrays, which is apparently possible: http://msdn.microsoft.com/en-us/library/windows/desktop/bb509699%28v=vs.85%29.aspx (Note not only does this show cube arrays using explicit lod, but also the confusion with this opcode: it lists an explicit lod parameter value, but then states last component of location is used as lod). (For "true" hw drivers, only nv50 had code to handle it, and it appears the code was already right for the new semantics, though fix up the seemingly wrong c/d arguments while there.) v2: fix comment, separate out other changes. Reviewed-by: Jose Fonseca <[email protected]>
* gallivm: fix up size queries for dx10 sviewinfo opcodeRoland Scheidegger2013-02-081-1/+1
| | | | | | | | | | | | | | | Need to calculate the number of mip levels (if it would be worthwile could store it in dynamic state). While here, the query code also used chan 2 for the lod value. This worked with mesa state tracker but it seems safer to use chan 0. Still passes piglit textureSize (with some handwaving), though the non-GL parts are (largely) untested. v2: clarify and expect the sviewinfo opcode to return ints, not floats, just like the OpenGL textureSize (dx10 supports dst modifiers with resinfo). Also simplify some code. Reviewed-by: Jose Fonseca <[email protected]>
* gallium: add SQRT shader opcodeBrian Paul2013-02-041-0/+9
| | | | | | | | | | | | | | | | | | The glsl-to-tgsi translater will emit SQRT to implement GLSL's sqrt() and distance() functions if the PIPE_SHADER_CAP_TGSI_SQRT_SUPPORTED query says it's supported by the driver. Otherwise, sqrt(x) is implemented with x*rsq(x). The problem with this is sqrt(0) must be handled specially because rsq(0) might be Inf/NaN/undefined (and then 0*rsq(0) is Inf/Nan/undefined). In the glsl-to-tgsi code we use an extra CMP to check if x is zero and then replace the result of x*rsq(x) with zero. In the end, this makes sqrt() generate much more reasonable code for drivers that can do square roots. Note that many of piglit's generated shader tests use the GLSL distance() function.
* gallium: add PIPE_CAP_TEXTURE_BUFFER_OFFSET_ALIGNMENTChristoph Bumiller2013-01-301-0/+3
| | | | Reviewed-by: Brian Paul <[email protected]>
* gallium: remove PIPE_CAP_DEPTHSTENCIL_CLEAR_SEPARATEMarek Olšák2013-01-152-4/+1
| | | | Reviewed-by: Brian Paul <[email protected]>
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