Mesa (master): nv30: add depth bounds test support for hw that has it

[Ilia Mirkin]

Module: Mesa
Branch: master
Commit: 7ff7d5d799a54f2b08a3019df7fd531501174182
URL:    http://cgit.freedesktop.org/mesa/mesa/commit/?id=7ff7d5d799a54f2b08a3019df7fd531501174182

Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Tue Aug 11 12:19:54 2015 -0400

nv30: add depth bounds test support for hw that has it

Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>

---

 src/gallium/drivers/nouveau/nv30/nv30_screen.c |    4 +++-
 src/gallium/drivers/nouveau/nv30/nv30_state.c  |    8 ++++++++
 src/gallium/drivers/nouveau/nv30/nv30_state.h  |    4 +++-
 3 files changed, 14 insertions(+), 2 deletions(-)

diff --git a/src/gallium/drivers/nouveau/nv30/nv30_screen.c b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
index efa766d..7aad26b 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_screen.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_screen.c
@@ -98,6 +98,9 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_VERTEX_ELEMENT_SRC_OFFSET_4BYTE_ALIGNED_ONLY:
    case PIPE_CAP_PREFER_BLIT_BASED_TEXTURE_TRANSFER:
       return 1;
+   /* nv35 capabilities */
+   case PIPE_CAP_DEPTH_BOUNDS_TEST:
+      return eng3d->oclass == NV35_3D_CLASS || eng3d->oclass >= NV40_3D_CLASS;
    /* nv4x capabilities */
    case PIPE_CAP_BLEND_EQUATION_SEPARATE:
    case PIPE_CAP_NPOT_TEXTURES:
@@ -166,7 +169,6 @@ nv30_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
    case PIPE_CAP_MAX_SHADER_PATCH_VARYINGS:
    case PIPE_CAP_TEXTURE_FLOAT_LINEAR:
    case PIPE_CAP_TEXTURE_HALF_FLOAT_LINEAR:
-   case PIPE_CAP_DEPTH_BOUNDS_TEST:
       return 0;
 
    case PIPE_CAP_VENDOR_ID:
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_state.c b/src/gallium/drivers/nouveau/nv30/nv30_state.c
index 708ba34..fd604c2 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_state.c
+++ b/src/gallium/drivers/nouveau/nv30/nv30_state.c
@@ -211,6 +211,7 @@ static void *
 nv30_zsa_state_create(struct pipe_context *pipe,
                       const struct pipe_depth_stencil_alpha_state *cso)
 {
+   struct nouveau_object *eng3d = nv30_context(pipe)->screen->eng3d;
    struct nv30_zsa_stateobj *so;
 
    so = CALLOC_STRUCT(nv30_zsa_stateobj);
@@ -223,6 +224,13 @@ nv30_zsa_state_create(struct pipe_context *pipe,
    SB_DATA  (so, cso->depth.writemask);
    SB_DATA  (so, cso->depth.enabled);
 
+   if (eng3d->oclass == NV35_3D_CLASS || eng3d->oclass >= NV40_3D_CLASS) {
+      SB_MTHD35(so, DEPTH_BOUNDS_TEST_ENABLE, 3);
+      SB_DATA  (so, cso->depth.bounds_test);
+      SB_DATA  (so, fui(cso->depth.bounds_min));
+      SB_DATA  (so, fui(cso->depth.bounds_max));
+   }
+
    if (cso->stencil[0].enabled) {
       SB_MTHD30(so, STENCIL_ENABLE(0), 3);
       SB_DATA  (so, 1);
diff --git a/src/gallium/drivers/nouveau/nv30/nv30_state.h b/src/gallium/drivers/nouveau/nv30/nv30_state.h
index 1f13d24..ed3b810 100644
--- a/src/gallium/drivers/nouveau/nv30/nv30_state.h
+++ b/src/gallium/drivers/nouveau/nv30/nv30_state.h
@@ -13,6 +13,8 @@
 #define SB_DATA(so, u)        (so)->data[(so)->size++] = (u)
 #define SB_MTHD30(so, mthd, size)                                          \
    SB_DATA((so), ((size) << 18) | (7 << 13) | NV30_3D_##mthd)
+#define SB_MTHD35(so, mthd, size)                                          \
+   SB_DATA((so), ((size) << 18) | (7 << 13) | NV35_3D_##mthd)
 #define SB_MTHD40(so, mthd, size)                                          \
    SB_DATA((so), ((size) << 18) | (7 << 13) | NV40_3D_##mthd)
 
@@ -30,7 +32,7 @@ struct nv30_rasterizer_stateobj {
 
 struct nv30_zsa_stateobj {
    struct pipe_depth_stencil_alpha_state pipe;
-   unsigned data[32];
+   unsigned data[36];
    unsigned size;
 };