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nv50,nvc0: add support for cull distances

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Cull distances are just a special case of clip distances as far as the
hardware is concerned. Make sure that the relevant "planes" are enabled,
and flip the clip mode to cull for those.

Signed-off-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
[imirkin: add enables on nvc0, add nv50 support]
Signed-off-by: Ilia Mirkin <imirkin@alum.mit.edu>
Reviewed-by: Tobias Klausmann <tobias.johannes.klausmann@mni.thm.de>
This commit is contained in:
Tobias Klausmann
2016-05-08 22:44:11 +02:00
committed by Ilia Mirkin
parent 2ad970ecf4
commit 8c02939794
12 changed files with 35 additions and 13 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
docs/GL3.txt
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@@ -211,7 +211,7 @@ GL 4.5, GLSL 4.50:
GL_ARB_ES3_1_compatibility not started
GL_ARB_clip_control DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
GL_ARB_conditional_render_inverted DONE (i965, nv50, nvc0, r600, radeonsi, llvmpipe, softpipe)
GL_ARB_cull_distance DONE (i965)
GL_ARB_cull_distance DONE (i965, nv50, nvc0)
GL_ARB_derivative_control DONE (i965, nv50, nvc0, r600, radeonsi)
GL_ARB_direct_state_access DONE (all drivers)
GL_ARB_get_texture_sub_image DONE (all drivers)

2
docs/relnotes/11.3.0.html
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@@ -46,7 +46,7 @@ Note: some of the new features are only available with certain drivers.
<ul>
<li>OpenGL 4.2 on radeonsi</li>
<li>GL_ARB_compute_shader on radeonsi, softpipe</li>
<li>GL_ARB_cull_distance on i965/gen6+</li>
<li>GL_ARB_cull_distance on i965/gen6+, nv50, nvc0</li>
<li>GL_ARB_framebuffer_no_attachments on nvc0, r600, radeonsi, softpipe</li>
<li>GL_ARB_internalformat_query2 on all drivers</li>
<li>GL_ARB_query_buffer_object on i965/hsw+</li>

9
src/gallium/drivers/nouveau/nv50/nv50_program.c
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@@ -319,7 +319,7 @@ nv50_program_translate(struct nv50_program *prog, uint16_t chipset,
struct pipe_debug_callback *debug)
{
struct nv50_ir_prog_info *info;
int ret;
int i, ret;
const uint8_t map_undef = (prog->type == PIPE_SHADER_VERTEX) ? 0x40 : 0x80;
info = CALLOC_STRUCT(nv50_ir_prog_info);
@@ -378,6 +378,13 @@ nv50_program_translate(struct nv50_program *prog, uint16_t chipset,
prog->vp.need_vertex_id = info->io.vertexId < PIPE_MAX_SHADER_INPUTS;
prog->vp.clip_enable = (1 << info->io.clipDistances) - 1;
prog->vp.cull_enable =
((1 << info->io.cullDistances) - 1) << info->io.clipDistances;
prog->vp.clip_mode = 0;
for (i = 0; i < info->io.cullDistances; ++i)
prog->vp.clip_mode |= 1 << ((info->io.clipDistances + i) * 4);
if (prog->type == PIPE_SHADER_FRAGMENT) {
if (info->prop.fp.writesDepth) {
prog->fp.flags[0] |= NV50_3D_FP_CONTROL_EXPORTS_Z;

3
src/gallium/drivers/nouveau/nv50/nv50_program.h
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@@ -79,6 +79,9 @@ struct nv50_program {
ubyte clpd[2]; /* output slot of clip distance[i]'s 1st component */
ubyte clpd_nr;
bool need_vertex_id;
uint32_t clip_mode;
uint8_t clip_enable; /* mask of defined clip planes */
uint8_t cull_enable; /* mask of defined cull distances */
} vp;
struct {

2
src/gallium/drivers/nouveau/nv50/nv50_screen.c
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@@ -195,6 +195,7 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_TGSI_FS_FACE_IS_INTEGER_SYSVAL:
case PIPE_CAP_INVALIDATE_BUFFER:
case PIPE_CAP_STRING_MARKER:
case PIPE_CAP_CULL_DISTANCE:
return 1;
case PIPE_CAP_SEAMLESS_CUBE_MAP:
return 1; /* class_3d >= NVA0_3D_CLASS; */
@@ -247,7 +248,6 @@ nv50_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_PCI_FUNCTION:
case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
case PIPE_CAP_CULL_DISTANCE:
return 0;
case PIPE_CAP_VENDOR_ID:

1
src/gallium/drivers/nouveau/nv50/nv50_screen.h
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@@ -36,6 +36,7 @@ struct nv50_graph_state {
uint32_t semantic_color;
uint32_t semantic_psize;
int32_t index_bias;
uint32_t clip_mode;
bool uniform_buffer_bound[3];
bool prim_restart;
bool point_sprite;

5
src/gallium/drivers/nouveau/nv50/nv50_shader_state.c
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@@ -389,6 +389,7 @@ nv50_fp_linkage_validate(struct nv50_context *nv50)
uint32_t psiz = 0x000;
uint32_t interp = fp->fp.interp;
uint32_t colors = fp->fp.colors;
uint32_t clpd_nr = util_last_bit(vp->vp.clip_enable | vp->vp.cull_enable);
uint32_t lin[4];
uint8_t map[64];
uint8_t so_map[64];
@@ -415,7 +416,7 @@ nv50_fp_linkage_validate(struct nv50_context *nv50)
dummy.linear = 0;
m = nv50_vec4_map(map, 0, lin, &dummy, &vp->out[0]);
for (c = 0; c < vp->vp.clpd_nr; ++c)
for (c = 0; c < clpd_nr; ++c)
map[m++] = vp->vp.clpd[c / 4] + (c % 4);
colors |= m << 8; /* adjust BFC0 id */
@@ -522,7 +523,7 @@ nv50_fp_linkage_validate(struct nv50_context *nv50)
BEGIN_NV04(push, NV50_3D(GP_VIEWPORT_ID_ENABLE), 5);
PUSH_DATA (push, vp->gp.has_viewport);
PUSH_DATA (push, colors);
PUSH_DATA (push, (vp->vp.clpd_nr << 8) | 4);
PUSH_DATA (push, (clpd_nr << 8) | 4);
PUSH_DATA (push, layerid);
PUSH_DATA (push, psiz);

15
src/gallium/drivers/nouveau/nv50/nv50_state_validate.c
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@@ -340,7 +340,7 @@ nv50_validate_clip(struct nv50_context *nv50)
{
struct nouveau_pushbuf *push = nv50->base.pushbuf;
struct nv50_program *vp;
uint8_t clip_enable;
uint8_t clip_enable = nv50->rast->pipe.clip_plane_enable;
if (nv50->dirty_3d & NV50_NEW_3D_CLIP) {
BEGIN_NV04(push, NV50_3D(CB_ADDR), 1);
@@ -353,13 +353,20 @@ nv50_validate_clip(struct nv50_context *nv50)
if (likely(!vp))
vp = nv50->vertprog;
clip_enable = nv50->rast->pipe.clip_plane_enable;
if (clip_enable)
nv50_check_program_ucps(nv50, vp, clip_enable);
clip_enable &= vp->vp.clip_enable;
clip_enable |= vp->vp.cull_enable;
BEGIN_NV04(push, NV50_3D(CLIP_DISTANCE_ENABLE), 1);
PUSH_DATA (push, clip_enable);
if (clip_enable)
nv50_check_program_ucps(nv50, vp, clip_enable);
if (nv50->state.clip_mode != vp->vp.clip_mode) {
nv50->state.clip_mode = vp->vp.clip_mode;
BEGIN_NV04(push, NV50_3D(CLIP_DISTANCE_MODE), 1);
PUSH_DATA (push, vp->vp.clip_mode);
}
}
static void

5
src/gallium/drivers/nouveau/nvc0/nvc0_program.c
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@@ -251,8 +251,9 @@ nvc0_vtgp_gen_header(struct nvc0_program *vp, struct nv50_ir_prog_info *info)
}
}
vp->vp.clip_enable =
(1 << (info->io.clipDistances + info->io.cullDistances)) - 1;
vp->vp.clip_enable = (1 << info->io.clipDistances) - 1;
vp->vp.cull_enable =
((1 << info->io.cullDistances) - 1) << info->io.clipDistances;
for (i = 0; i < info->io.cullDistances; ++i)
vp->vp.clip_mode |= 1 << ((info->io.clipDistances + i) * 4);

1
src/gallium/drivers/nouveau/nvc0/nvc0_program.h
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@@ -39,6 +39,7 @@ struct nvc0_program {
struct {
uint32_t clip_mode; /* clip/cull selection */
uint8_t clip_enable; /* mask of defined clip planes */
uint8_t cull_enable; /* mask of defined cull distances */
uint8_t num_ucps; /* also set to max if ClipDistance is used */
uint8_t edgeflag; /* attribute index of edgeflag input */
bool need_vertex_id;

2
src/gallium/drivers/nouveau/nvc0/nvc0_screen.c
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@@ -227,6 +227,7 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_INVALIDATE_BUFFER:
case PIPE_CAP_STRING_MARKER:
case PIPE_CAP_FRAMEBUFFER_NO_ATTACHMENT:
case PIPE_CAP_CULL_DISTANCE:
return 1;
case PIPE_CAP_SEAMLESS_CUBE_MAP_PER_TEXTURE:
return (class_3d >= NVE4_3D_CLASS) ? 1 : 0;
@@ -259,7 +260,6 @@ nvc0_screen_get_param(struct pipe_screen *pscreen, enum pipe_cap param)
case PIPE_CAP_PCI_DEVICE:
case PIPE_CAP_PCI_FUNCTION:
case PIPE_CAP_ROBUST_BUFFER_ACCESS_BEHAVIOR:
case PIPE_CAP_CULL_DISTANCE:
return 0;
case PIPE_CAP_VENDOR_ID:

1
src/gallium/drivers/nouveau/nvc0/nvc0_state_validate.c
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@@ -389,6 +389,7 @@ nvc0_validate_clip(struct nvc0_context *nvc0)
nvc0_upload_uclip_planes(nvc0, stage);
clip_enable &= vp->vp.clip_enable;
clip_enable |= vp->vp.cull_enable;
if (nvc0->state.clip_enable != clip_enable) {
nvc0->state.clip_enable = clip_enable;