diff options
Diffstat (limited to 'src/gallium/docs/source')
| -rw-r--r-- | src/gallium/docs/source/cso/rasterizer.rst | 14 | ||||
| -rw-r--r-- | src/gallium/docs/source/tgsi.rst | 11 |
2 files changed, 25 insertions, 0 deletions
diff --git a/src/gallium/docs/source/cso/rasterizer.rst b/src/gallium/docs/source/cso/rasterizer.rst index a3836d9286a..482b1ea02c9 100644 --- a/src/gallium/docs/source/cso/rasterizer.rst +++ b/src/gallium/docs/source/cso/rasterizer.rst @@ -227,3 +227,17 @@ gl_rasterization_rules Whether the rasterizer should use (0.5, 0.5) pixel centers. When not set, the rasterizer will use (0, 0) for pixel centers. +depth_clip + When false, the near and far depth clipping planes of the view volume are + disabled and the depth value will be clamped at the per-pixel level, after + polygon offset has been applied and before depth testing. + +clip_plane_enable + For each k in [0, PIPE_MAX_CLIP_PLANES), if bit k of this field is set, + clipping half-space k is enabled, if it is clear, it is disabled. + The clipping half-spaces are defined either by the user clip planes in + ``pipe_clip_state``, or by the clip distance outputs of the shader stage + preceding the fragment shader. + If any clip distance output is written, those half-spaces for which no + clip distance is written count as disabled; i.e. user clip planes and + shader clip distances cannot be mixed, and clip distances take precedence. diff --git a/src/gallium/docs/source/tgsi.rst b/src/gallium/docs/source/tgsi.rst index 7e7010f407f..fda21a21ed4 100644 --- a/src/gallium/docs/source/tgsi.rst +++ b/src/gallium/docs/source/tgsi.rst @@ -1754,6 +1754,17 @@ Specifies that writes to the fragment shader color 0 are replicated to all bound cbufs. This facilitates OpenGL's fragColor output vs fragData[0] where fragData is directed to a single color buffer, but fragColor is broadcast. +VS_PROHIBIT_UCPS +"""""""""""""""""""""""""" +If this property is set on the program bound to the shader stage before the +fragment shader, user clip planes should have no effect (be disabled) even if +that shader does not write to any clip distance outputs and the rasterizer's +clip_plane_enable is non-zero. +This property is only supported by drivers that also support shader clip +distance outputs. +This is useful for APIs that don't have UCPs and where clip distances written +by a shader cannot be disabled. + Texture Sampling and Texture Formats ------------------------------------ |