From 34738a92dea31ab91edb62bf83a3fe1ca44c35a1 Mon Sep 17 00:00:00 2001 From: Marek Olšák Date: Sat, 2 Jan 2016 20:45:00 +0100 Subject: gallium: add caps for POSITION and FACE system values v2: document the integer behavior Reviewed-by: Edward O'Callaghan --- src/gallium/docs/source/screen.rst | 5 +++++ src/gallium/docs/source/tgsi.rst | 19 +++++++++++++------ src/gallium/drivers/freedreno/freedreno_screen.c | 2 ++ src/gallium/drivers/i915/i915_screen.c | 2 ++ src/gallium/drivers/ilo/ilo_screen.c | 2 ++ src/gallium/drivers/llvmpipe/lp_screen.c | 2 ++ src/gallium/drivers/nouveau/nv30/nv30_screen.c | 2 ++ src/gallium/drivers/nouveau/nv50/nv50_screen.c | 2 ++ src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 2 ++ src/gallium/drivers/r300/r300_screen.c | 2 ++ src/gallium/drivers/r600/r600_pipe.c | 2 ++ src/gallium/drivers/radeonsi/si_pipe.c | 2 ++ src/gallium/drivers/softpipe/sp_screen.c | 2 ++ src/gallium/drivers/svga/svga_screen.c | 2 ++ src/gallium/drivers/vc4/vc4_screen.c | 2 ++ src/gallium/drivers/virgl/virgl_screen.c | 2 ++ src/gallium/include/pipe/p_defines.h | 2 ++ 17 files changed, 48 insertions(+), 6 deletions(-) diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index 39ecc6334e..fc08bb9ac3 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -292,6 +292,11 @@ The integer capabilities: supported in vertex shaders. * ``PIPE_CAP_TGSI_PACK_HALF_FLOAT``: Whether the ``UP2H`` and ``PK2H`` TGSI opcodes are supported. +* ``PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL``: If state trackers should use + a system value for the POSITION fragment shader input. +* ``PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL``: If state trackers should use + a system value for the FACE fragment shader input. + Also, the FACE system value is integer, not float. .. _pipe_capf: diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 2149d08419..8fe971b2f7 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -2658,7 +2658,8 @@ space coordinate system. After clipping, the X, Y and Z components of the vertex will be divided by the W value to get normalized device coordinates. For fragment shaders, TGSI_SEMANTIC_POSITION is used to indicate that -fragment shader input contains the fragment's window position. The X +fragment shader input (or system value, depending on which one is +supported by the driver) contains the fragment's window position. The X component starts at zero and always increases from left to right. The Y component starts at zero and always increases but Y=0 may either indicate the top of the window or the bottom depending on the fragment @@ -2770,11 +2771,17 @@ typically only used for legacy graphics APIs. TGSI_SEMANTIC_FACE """""""""""""""""" -This label applies to fragment shader inputs only and indicates that -the register contains front/back-face information of the form (F, 0, -0, 1). The first component will be positive when the fragment belongs -to a front-facing polygon, and negative when the fragment belongs to a -back-facing polygon. +This label applies to fragment shader inputs (or system values, +depending on which one is supported by the driver) and indicates that +the register contains front/back-face information. + +If it is an input, it will be a floating-point vector in the form (F, 0, 0, 1), +where F will be positive when the fragment belongs to a front-facing polygon, +and negative when the fragment belongs to a back-facing polygon. + +If it is a system value, it will be an integer vector in the form (F, 0, 0, 1), +where F is 0xffffffff when the fragment belongs to a front-facing polygon and +0 when the fragment belongs to a back-facing polygon. TGSI_SEMANTIC_EDGEFLAG diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c index a8030f2ff6..e940b1c21e 100644 --- a/src/gallium/drivers/freedreno/freedreno_screen.c +++ b/src/gallium/drivers/freedreno/freedreno_screen.c @@ -242,6 +242,8 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_MAX_VIEWPORTS: diff --git a/src/gallium/drivers/i915/i915_screen.c b/src/gallium/drivers/i915/i915_screen.c index f42fc37abe..2289eb58c4 100644 --- a/src/gallium/drivers/i915/i915_screen.c +++ b/src/gallium/drivers/i915/i915_screen.c @@ -256,6 +256,8 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_MAX_DUAL_SOURCE_RENDER_TARGETS: diff --git a/src/gallium/drivers/ilo/ilo_screen.c b/src/gallium/drivers/ilo/ilo_screen.c index 3a18e7415b..c26d4492d3 100644 --- a/src/gallium/drivers/ilo/ilo_screen.c +++ b/src/gallium/drivers/ilo/ilo_screen.c @@ -480,6 +480,8 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_VENDOR_ID: diff --git a/src/gallium/drivers/llvmpipe/lp_screen.c b/src/gallium/drivers/llvmpipe/lp_screen.c index 0898cff3a2..1407b2688d 100644 --- a/src/gallium/drivers/llvmpipe/lp_screen.c +++ b/src/gallium/drivers/llvmpipe/lp_screen.c @@ -305,6 +305,8 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_TGSI_PACK_HALF_FLOAT: case PIPE_CAP_MULTI_DRAW_INDIRECT: case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; } /* should only get here on unhandled cases */ diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c index 6c4a0f31ab..e63767d8aa 100644 --- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c +++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c @@ -178,6 +178,8 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_VENDOR_ID: diff --git a/src/gallium/drivers/nouveau/nv50/nv50_screen.c b/src/gallium/drivers/nouveau/nv50/nv50_screen.c index d6131c2f99..68d2acd4bc 100644 --- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c +++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c @@ -221,6 +221,8 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_VENDOR_ID: diff --git a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c index c8510b8bb5..e4749eed7a 100644 --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c @@ -210,6 +210,8 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_VERTEXID_NOBASE: case PIPE_CAP_RESOURCE_FROM_USER_MEMORY: case PIPE_CAP_DEVICE_RESET_STATUS_QUERY: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_VENDOR_ID: diff --git a/src/gallium/drivers/r300/r300_screen.c b/src/gallium/drivers/r300/r300_screen.c index 5e67a2ffd1..a376590ab6 100644 --- a/src/gallium/drivers/r300/r300_screen.c +++ b/src/gallium/drivers/r300/r300_screen.c @@ -204,6 +204,8 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; /* SWTCL-only features. */ diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c index 563a892c4a..9e5824202a 100644 --- a/src/gallium/drivers/r600/r600_pipe.c +++ b/src/gallium/drivers/r600/r600_pipe.c @@ -352,6 +352,8 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_TGSI_PACK_HALF_FLOAT: case PIPE_CAP_MULTI_DRAW_INDIRECT: case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS: diff --git a/src/gallium/drivers/radeonsi/si_pipe.c b/src/gallium/drivers/radeonsi/si_pipe.c index 64f28d9c7b..50b2347246 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.c +++ b/src/gallium/drivers/radeonsi/si_pipe.c @@ -344,6 +344,8 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_TGSI_PACK_HALF_FLOAT: case PIPE_CAP_MULTI_DRAW_INDIRECT: case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS: diff --git a/src/gallium/drivers/softpipe/sp_screen.c b/src/gallium/drivers/softpipe/sp_screen.c index e74044b5b0..36510d5eb4 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -255,6 +255,8 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_TGSI_PACK_HALF_FLOAT: case PIPE_CAP_MULTI_DRAW_INDIRECT: case PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; } /* should only get here on unhandled cases */ diff --git a/src/gallium/drivers/svga/svga_screen.c b/src/gallium/drivers/svga/svga_screen.c index 1778111850..4285b1c2e0 100644 --- a/src/gallium/drivers/svga/svga_screen.c +++ b/src/gallium/drivers/svga/svga_screen.c @@ -388,6 +388,8 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_COPY_BETWEEN_COMPRESSED_AND_PLAIN_FORMATS: case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; } diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c index 8bbacc60d4..58f8ad9d51 100644 --- a/src/gallium/drivers/vc4/vc4_screen.c +++ b/src/gallium/drivers/vc4/vc4_screen.c @@ -193,6 +193,8 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; /* Stream output. */ diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c index 05ce58415e..bf048da42a 100644 --- a/src/gallium/drivers/virgl/virgl_screen.c +++ b/src/gallium/drivers/virgl/virgl_screen.c @@ -223,6 +223,8 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_CLEAR_TEXTURE: case PIPE_CAP_DRAW_PARAMETERS: case PIPE_CAP_TGSI_PACK_HALF_FLOAT: + case PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL: + case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: return 0; case PIPE_CAP_VENDOR_ID: return 0x1af4; diff --git a/src/gallium/include/pipe/p_defines.h b/src/gallium/include/pipe/p_defines.h index 591bbf3255..8e48528944 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -639,6 +639,8 @@ enum pipe_cap PIPE_CAP_TGSI_PACK_HALF_FLOAT, PIPE_CAP_MULTI_DRAW_INDIRECT, PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS, + PIPE_CAP_TGSI_FS_POSITION_IS_SYSVAL, + PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL, }; #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0) -- cgit v1.2.3