Add PIPE_CAP to determine if the GL extension
'GL_ARB_framebuffer_no_attachments' shall be
supported.
The driver is required to support 'PIPE_FORMAT_NONE'
via its 'is_format_supported()' callback in order
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.
V.3:
Renamed and repurposed once again.
Signed-off-by: Edward O'Callaghan <eocallag...@alterapraxis.com>
---
src/gallium/docs/source/screen.rst | 8 ++++++++
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, 24 insertions(+)
diff --git a/src/gallium/docs/source/screen.rst
b/src/gallium/docs/source/screen.rst
index 46ec381..218766e 100644
--- a/src/gallium/docs/source/screen.rst
+++ b/src/gallium/docs/source/screen.rst
@@ -323,6 +323,14 @@ 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_FRAMEBUFFER_NO_ATTACHMENT``:
+ If non-zero, rendering to framebuffers with no surface attachments
+ is supported. The context->is_format_supported function will be expected
+ to be implemented with PIPE_FORMAT_NONE yeilding the MSAA modes the hardware
+ supports. 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..707be17 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_FRAMEBUFFER_NO_ATTACHMENT:
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..68e32e5 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_FRAMEBUFFER_NO_ATTACHMENT:
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..5284e80 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_FRAMEBUFFER_NO_ATTACHMENT:
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..6a5f906 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_FRAMEBUFFER_NO_ATTACHMENT:
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..db7c2d1 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_FRAMEBUFFER_NO_ATTACHMENT:
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..0fa26bd 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_FRAMEBUFFER_NO_ATTACHMENT:
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 553c001..d083708 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_FRAMEBUFFER_NO_ATTACHMENT:
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..3763bbc 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_FRAMEBUFFER_NO_ATTACHMENT:
return 0;
/* SWTCL-only features. */
diff --git a/src/gallium/drivers/r600/r600_pipe.c
b/src/gallium/drivers/r600/r600_pipe.c
index b801191..4b91874 100644
--- a/src/gallium/drivers/r600/r600_pipe.c
+++ b/src/gallium/drivers/r600/r600_pipe.c
@@ -364,6 +364,7 @@ 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_FRAMEBUFFER_NO_ATTACHMENT:
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 dd1103e..51ebb96 100644
--- a/src/gallium/drivers/radeonsi/si_pipe.c
+++ b/src/gallium/drivers/radeonsi/si_pipe.c
@@ -356,6 +356,7 @@ 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_FRAMEBUFFER_NO_ATTACHMENT:
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..90f29d6 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_FRAMEBUFFER_NO_ATTACHMENT:
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 c0873c0..ccf794e 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_FRAMEBUFFER_NO_ATTACHMENT:
return 0;
}
diff --git a/src/gallium/drivers/vc4/vc4_screen.c
b/src/gallium/drivers/vc4/vc4_screen.c
index 92d910b..6f56cd5 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_FRAMEBUFFER_NO_ATTACHMENT:
return 0;
/* Stream output. */
diff --git a/src/gallium/drivers/virgl/virgl_screen.c
b/src/gallium/drivers/virgl/virgl_screen.c
index 8126bde..5a5afc1 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_FRAMEBUFFER_NO_ATTACHMENT:
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 8257b4a..1d7f8d1 100644
--- a/src/gallium/include/pipe/p_defines.h
+++ b/src/gallium/include/pipe/p_defines.h
@@ -689,6 +689,7 @@ enum pipe_cap
PIPE_CAP_PCI_BUS,
PIPE_CAP_PCI_DEVICE,
PIPE_CAP_PCI_FUNCTION,
+ PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT,
};
#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 2fdaba0..59777ee 100644
--- a/src/mesa/state_tracker/st_extensions.c
+++ b/src/mesa/state_tracker/st_extensions.c
@@ -572,6 +572,7 @@ 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_FRAMEBUFFER_NO_ATTACHMENT },
{ 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
},
--
2.5.5
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