Why not derive this information from is_format_supported with rgba8 format? Seems like that would do the trick. Look at how the st already does something similar in st_extensions.c iirc. Your scheme only enables power-of-two msaa levels, and is redundant wrt the function I mentioned earlier... As I said to you on a number of previous occasions, the "no attachments" cap should just be a boolean. -ilia <div class="gmail_quote">On Mar 19, 2016 2:42 AM, "Edward O'Callaghan" <<a href="mailto:eocallaghan@alterapraxis.com">eocallaghan@alterapraxis.com</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Add PIPE_CAP to determine the MSAA modes the hardware supports so that values requested from the application using GL_ARB_framebuffer_no_attachments may be quantized to what the hardware expects. V.2: Fix doc for a more detailed description of the PIPE_CAP and the corresponding GL constant. Signed-off-by: Edward O'Callaghan <<a href="mailto:eocallaghan@alterapraxis.com">eocallaghan@alterapraxis.com</a>> --- src/gallium/docs/source/screen.rst | 7 +++++++ src/gallium/drivers/freedreno/freedreno_screen.c | 1 + src/gallium/drivers/i915/i915_screen.c | 1 + src/gallium/drivers/ilo/ilo_screen.c | 1 + src/gallium/drivers/llvmpipe/lp_screen.c | 1 + src/gallium/drivers/nouveau/nv30/nv30_screen.c | 1 + src/gallium/drivers/nouveau/nv50/nv50_screen.c | 1 + src/gallium/drivers/nouveau/nvc0/nvc0_screen.c | 1 + src/gallium/drivers/r300/r300_screen.c | 1 + src/gallium/drivers/r600/r600_pipe.c | 1 + src/gallium/drivers/radeonsi/si_pipe.c | 1 + src/gallium/drivers/softpipe/sp_screen.c | 1 + src/gallium/drivers/svga/svga_screen.c | 1 + src/gallium/drivers/vc4/vc4_screen.c | 1 + src/gallium/drivers/virgl/virgl_screen.c | 1 + src/gallium/include/pipe/p_defines.h | 1 + src/mesa/state_tracker/st_extensions.c | 1 + 17 files changed, 23 insertions(+) diff --git a/src/gallium/docs/source/screen.rst b/src/gallium/docs/source/screen.rst index 46ec381..d3d8dc4 100644 --- a/src/gallium/docs/source/screen.rst +++ b/src/gallium/docs/source/screen.rst @@ -323,6 +323,13 @@ The integer capabilities: * ``PIPE_CAP_PCI_BUS``: Return the PCI bus number. * ``PIPE_CAP_PCI_DEVICE``: Return the PCI device number. * ``PIPE_CAP_PCI_FUNCTION``: Return the PCI function number. +* ``PIPE_CAP_MSAA_MODES``: + A bitmask of the supported MSAA modes the hardware supports. e.g., + (1 << 5) | .. | (1 << 1). If non-zero, rendering to framebuffers with no + surface attachments is supported. N.B., The maximum number of layers + supported for rasterizing a primitive on a layer is obtained from + ``PIPE_CAP_MAX_TEXTURE_ARRAY_LAYERS`` even though it can be larger than + the number of layers supported by either rendering or textures. .. _pipe_capf: diff --git a/src/gallium/drivers/freedreno/freedreno_screen.c b/src/gallium/drivers/freedreno/freedreno_screen.c index d47cb07..8b6ebe8 100644 --- a/src/gallium/drivers/freedreno/freedreno_screen.c +++ b/src/gallium/drivers/freedreno/freedreno_screen.c @@ -255,6 +255,7 @@ fd_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_INVALIDATE_BUFFER: case PIPE_CAP_GENERATE_MIPMAP: case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS: + case PIPE_CAP_MSAA_MODES: 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 f4aa310..02457c5 100644 --- a/src/gallium/drivers/i915/i915_screen.c +++ b/src/gallium/drivers/i915/i915_screen.c @@ -269,6 +269,7 @@ i915_get_param(struct pipe_screen *screen, enum pipe_cap cap) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 548d215..49fe658 100644 --- a/src/gallium/drivers/ilo/ilo_screen.c +++ b/src/gallium/drivers/ilo/ilo_screen.c @@ -497,6 +497,7 @@ ilo_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 2529b54..db3eff7 100644 --- a/src/gallium/drivers/llvmpipe/lp_screen.c +++ b/src/gallium/drivers/llvmpipe/lp_screen.c @@ -319,6 +319,7 @@ llvmpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 b105c6a..4fcadb8 100644 --- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c +++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c @@ -192,6 +192,7 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 5836bb2..6c8e930 100644 --- a/src/gallium/drivers/nouveau/nv50/nv50_screen.c +++ b/src/gallium/drivers/nouveau/nv50/nv50_screen.c @@ -236,6 +236,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 3c5b1da..910143f 100644 --- a/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c +++ b/src/gallium/drivers/nouveau/nvc0/nvc0_screen.c @@ -229,6 +229,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 1c3bb64..5ca49b2 100644 --- a/src/gallium/drivers/r300/r300_screen.c +++ b/src/gallium/drivers/r300/r300_screen.c @@ -214,6 +214,7 @@ static int r300_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_SURFACE_REINTERPRET_BLOCKS: case PIPE_CAP_QUERY_BUFFER_OBJECT: case PIPE_CAP_QUERY_MEMORY_INFO: + case PIPE_CAP_MSAA_MODES: return 0; /* SWTCL-only features. */ diff --git a/src/gallium/drivers/r600/r600_pipe.c b/src/gallium/drivers/r600/r600_pipe.c index 7018088..0d22faa 100644 --- a/src/gallium/drivers/r600/r600_pipe.c +++ b/src/gallium/drivers/r600/r600_pipe.c @@ -369,6 +369,7 @@ static int r600_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_GENERATE_MIPMAP: case PIPE_CAP_STRING_MARKER: case PIPE_CAP_QUERY_BUFFER_OBJECT: + case PIPE_CAP_MSAA_MODES: 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 8b50a49..46fa592 100644 --- a/src/gallium/drivers/radeonsi/si_pipe.c +++ b/src/gallium/drivers/radeonsi/si_pipe.c @@ -357,6 +357,7 @@ static int si_get_param(struct pipe_screen* pscreen, enum pipe_cap param) case PIPE_CAP_GENERATE_MIPMAP: case PIPE_CAP_STRING_MARKER: case PIPE_CAP_QUERY_BUFFER_OBJECT: + case PIPE_CAP_MSAA_MODES: 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 bfd3598..eec449a 100644 --- a/src/gallium/drivers/softpipe/sp_screen.c +++ b/src/gallium/drivers/softpipe/sp_screen.c @@ -270,6 +270,7 @@ softpipe_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 bcc5120..2c89830 100644 --- a/src/gallium/drivers/svga/svga_screen.c +++ b/src/gallium/drivers/svga/svga_screen.c @@ -404,6 +404,7 @@ svga_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL: case PIPE_CAP_BUFFER_SAMPLER_VIEW_RGBA_ONLY: case PIPE_CAP_QUERY_BUFFER_OBJECT: + case PIPE_CAP_MSAA_MODES: return 0; } diff --git a/src/gallium/drivers/vc4/vc4_screen.c b/src/gallium/drivers/vc4/vc4_screen.c index 92d910b..801e9ba 100644 --- a/src/gallium/drivers/vc4/vc4_screen.c +++ b/src/gallium/drivers/vc4/vc4_screen.c @@ -207,6 +207,7 @@ vc4_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: return 0; /* Stream output. */ diff --git a/src/gallium/drivers/virgl/virgl_screen.c b/src/gallium/drivers/virgl/virgl_screen.c index 8126bde..4ee0890 100644 --- a/src/gallium/drivers/virgl/virgl_screen.c +++ b/src/gallium/drivers/virgl/virgl_screen.c @@ -239,6 +239,7 @@ virgl_get_param(struct pipe_screen *screen, enum pipe_cap param) case PIPE_CAP_PCI_BUS: case PIPE_CAP_PCI_DEVICE: case PIPE_CAP_PCI_FUNCTION: + case PIPE_CAP_MSAA_MODES: 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 bdd76ab..bafc7b1 100644 --- a/src/gallium/include/pipe/p_defines.h +++ b/src/gallium/include/pipe/p_defines.h @@ -681,6 +681,7 @@ enum pipe_cap PIPE_CAP_PCI_BUS, PIPE_CAP_PCI_DEVICE, PIPE_CAP_PCI_FUNCTION, + PIPE_CAP_MSAA_MODES, }; #define PIPE_QUIRK_TEXTURE_BORDER_COLOR_SWIZZLE_NV50 (1 << 0) diff --git a/src/mesa/state_tracker/st_extensions.c b/src/mesa/state_tracker/st_extensions.c index 3666ece..275fe55 100644 --- a/src/mesa/state_tracker/st_extensions.c +++ b/src/mesa/state_tracker/st_extensions.c @@ -565,6 +565,7 @@ void st_init_extensions(struct pipe_screen *screen, { o(ARB_fragment_program_shadow), PIPE_CAP_TEXTURE_SHADOW_MAP }, { o(ARB_framebuffer_object), PIPE_CAP_MIXED_FRAMEBUFFER_SIZES }, { o(ARB_indirect_parameters), PIPE_CAP_MULTI_DRAW_INDIRECT_PARAMS }, + { o(ARB_framebuffer_no_attachments), PIPE_CAP_MSAA_MODES }, { o(ARB_instanced_arrays), PIPE_CAP_VERTEX_ELEMENT_INSTANCE_DIVISOR }, { o(ARB_occlusion_query), PIPE_CAP_OCCLUSION_QUERY }, { o(ARB_occlusion_query2), PIPE_CAP_OCCLUSION_QUERY }, -- 2.5.0 _______________________________________________ mesa-dev mailing list <a href="mailto:mesa-dev@lists.freedesktop.org">mesa-dev@lists.freedesktop.org</a> <a href="https://lists.freedesktop.org/mailman/listinfo/mesa-dev" rel="noreferrer" target="_blank">https://lists.freedesktop.org/mailman/listinfo/mesa-dev</a> </blockquote></div>