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authorRhys Perry <[email protected]>2018-06-14 19:56:28 -0600
committerBrian Paul <[email protected]>2018-06-14 20:09:45 -0600
commit51a221e37869235ad5c81bbfec06a2564b3b2d3b (patch)
tree1b81ac61ab2cf2411f42944eb246c2d53af2c358 /src/gallium/docs/source/context.rst
parent67f40dadaa6666dacd90d1540eaadef20b9d48ba (diff)
gallium: add support for programmable sample locations
Signed-off-by: Rhys Perry <[email protected]> Reviewed-by: Brian Paul <[email protected]> (v2) Reviewed-by: Marek Olšák <[email protected]> (v2)
Diffstat (limited to 'src/gallium/docs/source/context.rst')
-rw-r--r--src/gallium/docs/source/context.rst14
1 files changed, 14 insertions, 0 deletions
diff --git a/src/gallium/docs/source/context.rst b/src/gallium/docs/source/context.rst
index e8e80dcbc39..20d0df79312 100644
--- a/src/gallium/docs/source/context.rst
+++ b/src/gallium/docs/source/context.rst
@@ -68,6 +68,9 @@ objects. They all follow simple, one-method binding calls, e.g.
that this takes effect even if multisampling is not explicitly enabled if
the frambuffer surface(s) are multisampled. Also, this mask is AND-ed
with the optional fragment shader sample mask output (when emitted).
+* ``set_sample_locations`` sets the sample locations used for rasterization.
+ ```get_sample_position``` still returns the default locations. When NULL,
+ the default locations are used.
* ``set_min_samples`` sets the minimum number of samples that must be run.
* ``set_clip_state``
* ``set_polygon_stipple``
@@ -270,6 +273,17 @@ format.
multi-byte element value starting at offset bytes from resource start, going
for size bytes. It is guaranteed that size % clear_value_size == 0.
+Evaluating Depth Buffers
+^^^^^^^^^^^^^^^^^^^^^^^^
+
+``evaluate_depth_buffer`` is a hint to decompress the current depth buffer
+assuming the current sample locations to avoid problems that could arise when
+using programmable sample locations.
+
+If a depth buffer is rendered with different sample location state than
+what is current at the time of reading the depth buffer, the values may differ
+because depth buffer compression can depend the sample locations.
+
Uploading
^^^^^^^^^