diff --git a/src/broadcom/vulkan/v3dvx_cmd_buffer.c b/src/broadcom/vulkan/v3dvx_cmd_buffer.c index 638158b791e..a2011ef1b5e 100644 --- a/src/broadcom/vulkan/v3dvx_cmd_buffer.c +++ b/src/broadcom/vulkan/v3dvx_cmd_buffer.c @@ -1363,10 +1363,28 @@ v3dX(cmd_buffer_emit_viewport)(struct v3dv_cmd_buffer *cmd_buffer) v3dv_cmd_buffer_state_get_viewport_z_xform(&cmd_buffer->state, 0, &translate_z, &scale_z); +#if V3D_VERSION == 42 cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET, clip) { clip.viewport_z_offset_zc_to_zs = translate_z; clip.viewport_z_scale_zc_to_zs = scale_z; } +#endif + +#if V3D_VERSION >= 71 + /* If the Z scale is too small guardband clipping may not clip correctly */ + if (fabsf(scale_z) < 0.01f) { + cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET_NO_GUARDBAND, clip) { + clip.viewport_z_offset_zc_to_zs = translate_z; + clip.viewport_z_scale_zc_to_zs = scale_z; + } + } else { + cl_emit(&job->bcl, CLIPPER_Z_SCALE_AND_OFFSET, clip) { + clip.viewport_z_offset_zc_to_zs = translate_z; + clip.viewport_z_scale_zc_to_zs = scale_z; + } + } +#endif + cl_emit(&job->bcl, CLIPPER_Z_MIN_MAX_CLIPPING_PLANES, clip) { /* Vulkan's default Z NDC is [0..1]. If 'negative_one_to_one' is enabled, * we are using OpenGL's [-1, 1] instead.