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#include "nvfx_context.h"
#include "nouveau/nouveau_util.h"
static struct pipe_buffer *
nvfx_do_surface_buffer(struct pipe_surface *surface)
{
struct nvfx_miptree *mt = (struct nvfx_miptree *)surface->texture;
return mt->buffer;
}
#define nvfx_surface_buffer(ps) nouveau_bo(nvfx_do_surface_buffer(ps))
static boolean
nvfx_state_framebuffer_validate(struct nvfx_context *nvfx)
{
struct pipe_framebuffer_state *fb = &nvfx->framebuffer;
struct nouveau_channel *chan = nvfx->screen->base.channel;
struct nouveau_grobj *eng3d = nvfx->screen->eng3d;
struct nv04_surface *rt[4], *zeta = NULL;
uint32_t rt_enable = 0, rt_format = 0;
int i, colour_format = 0, zeta_format = 0;
int depth_only = 0;
struct nouveau_stateobj *so = so_new(18, 24, 10);
unsigned rt_flags = NOUVEAU_BO_RDWR | NOUVEAU_BO_VRAM;
unsigned w = fb->width;
unsigned h = fb->height;
int colour_bits = 32, zeta_bits = 32;
if(!nvfx->is_nv4x)
assert(fb->nr_cbufs <= 2);
else
assert(fb->nr_cbufs <= 4);
for (i = 0; i < fb->nr_cbufs; i++) {
if (colour_format) {
assert(colour_format == fb->cbufs[i]->format);
} else {
colour_format = fb->cbufs[i]->format;
rt_enable |= (NV34TCL_RT_ENABLE_COLOR0 << i);
rt[i] = (struct nv04_surface *)fb->cbufs[i];
}
}
if (rt_enable & (NV34TCL_RT_ENABLE_COLOR1 |
NV40TCL_RT_ENABLE_COLOR2 | NV40TCL_RT_ENABLE_COLOR3))
rt_enable |= NV34TCL_RT_ENABLE_MRT;
if (fb->zsbuf) {
zeta_format = fb->zsbuf->format;
zeta = (struct nv04_surface *)fb->zsbuf;
}
if (rt_enable & (NV34TCL_RT_ENABLE_COLOR0 | NV34TCL_RT_ENABLE_COLOR1 |
NV40TCL_RT_ENABLE_COLOR2 | NV40TCL_RT_ENABLE_COLOR3)) {
/* Render to at least a colour buffer */
if (!(rt[0]->base.texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)) {
assert(!(fb->width & (fb->width - 1)) && !(fb->height & (fb->height - 1)));
for (i = 1; i < fb->nr_cbufs; i++)
assert(!(rt[i]->base.texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR));
rt_format = NV34TCL_RT_FORMAT_TYPE_SWIZZLED |
(log2i(rt[0]->base.width) << NV34TCL_RT_FORMAT_LOG2_WIDTH_SHIFT) |
(log2i(rt[0]->base.height) << NV34TCL_RT_FORMAT_LOG2_HEIGHT_SHIFT);
}
else
rt_format = NV34TCL_RT_FORMAT_TYPE_LINEAR;
} else if (fb->zsbuf) {
depth_only = 1;
/* Render to depth buffer only */
if (!(zeta->base.texture->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)) {
assert(!(fb->width & (fb->width - 1)) && !(fb->height & (fb->height - 1)));
rt_format = NV34TCL_RT_FORMAT_TYPE_SWIZZLED |
(log2i(zeta->base.width) << NV34TCL_RT_FORMAT_LOG2_WIDTH_SHIFT) |
(log2i(zeta->base.height) << NV34TCL_RT_FORMAT_LOG2_HEIGHT_SHIFT);
}
else
rt_format = NV34TCL_RT_FORMAT_TYPE_LINEAR;
} else {
return FALSE;
}
switch (colour_format) {
case PIPE_FORMAT_B8G8R8X8_UNORM:
rt_format |= NV34TCL_RT_FORMAT_COLOR_X8R8G8B8;
break;
case PIPE_FORMAT_B8G8R8A8_UNORM:
case 0:
rt_format |= NV34TCL_RT_FORMAT_COLOR_A8R8G8B8;
break;
case PIPE_FORMAT_B5G6R5_UNORM:
rt_format |= NV34TCL_RT_FORMAT_COLOR_R5G6B5;
colour_bits = 16;
break;
default:
assert(0);
}
switch (zeta_format) {
case PIPE_FORMAT_Z16_UNORM:
rt_format |= NV34TCL_RT_FORMAT_ZETA_Z16;
zeta_bits = 16;
break;
case PIPE_FORMAT_S8_USCALED_Z24_UNORM:
case PIPE_FORMAT_X8Z24_UNORM:
case 0:
rt_format |= NV34TCL_RT_FORMAT_ZETA_Z24S8;
break;
default:
assert(0);
}
if ((!nvfx->is_nv4x) && colour_bits > zeta_bits) {
/* TODO: does this limitation really exist?
TODO: can it be worked around somehow? */
return FALSE;
}
if ((rt_enable & NV34TCL_RT_ENABLE_COLOR0)
|| ((!nvfx->is_nv4x) && depth_only)) {
struct nv04_surface *rt0 = (depth_only ? zeta : rt[0]);
uint32_t pitch = rt0->pitch;
if(!nvfx->is_nv4x)
{
if (zeta) {
pitch |= (zeta->pitch << 16);
} else {
pitch |= (pitch << 16);
}
}
so_method(so, eng3d, NV34TCL_DMA_COLOR0, 1);
so_reloc (so, nvfx_surface_buffer(&rt0->base), 0,
rt_flags | NOUVEAU_BO_OR,
chan->vram->handle, chan->gart->handle);
so_method(so, eng3d, NV34TCL_COLOR0_PITCH, 2);
so_data (so, pitch);
so_reloc (so, nvfx_surface_buffer(&rt[0]->base),
rt0->base.offset, rt_flags | NOUVEAU_BO_LOW,
0, 0);
}
if (rt_enable & NV34TCL_RT_ENABLE_COLOR1) {
so_method(so, eng3d, NV34TCL_DMA_COLOR1, 1);
so_reloc (so, nvfx_surface_buffer(&rt[1]->base), 0,
rt_flags | NOUVEAU_BO_OR,
chan->vram->handle, chan->gart->handle);
so_method(so, eng3d, NV34TCL_COLOR1_OFFSET, 2);
so_reloc (so, nvfx_surface_buffer(&rt[1]->base),
rt[1]->base.offset, rt_flags | NOUVEAU_BO_LOW,
0, 0);
so_data (so, rt[1]->pitch);
}
if(nvfx->is_nv4x)
{
if (rt_enable & NV40TCL_RT_ENABLE_COLOR2) {
so_method(so, eng3d, NV40TCL_DMA_COLOR2, 1);
so_reloc (so, nvfx_surface_buffer(&rt[2]->base), 0,
rt_flags | NOUVEAU_BO_OR,
chan->vram->handle, chan->gart->handle);
so_method(so, eng3d, NV40TCL_COLOR2_OFFSET, 1);
so_reloc (so, nvfx_surface_buffer(&rt[2]->base),
rt[2]->base.offset, rt_flags | NOUVEAU_BO_LOW,
0, 0);
so_method(so, eng3d, NV40TCL_COLOR2_PITCH, 1);
so_data (so, rt[2]->pitch);
}
if (rt_enable & NV40TCL_RT_ENABLE_COLOR3) {
so_method(so, eng3d, NV40TCL_DMA_COLOR3, 1);
so_reloc (so, nvfx_surface_buffer(&rt[3]->base), 0,
rt_flags | NOUVEAU_BO_OR,
chan->vram->handle, chan->gart->handle);
so_method(so, eng3d, NV40TCL_COLOR3_OFFSET, 1);
so_reloc (so, nvfx_surface_buffer(&rt[3]->base),
rt[3]->base.offset, rt_flags | NOUVEAU_BO_LOW,
0, 0);
so_method(so, eng3d, NV40TCL_COLOR3_PITCH, 1);
so_data (so, rt[3]->pitch);
}
}
if (zeta_format) {
so_method(so, eng3d, NV34TCL_DMA_ZETA, 1);
so_reloc (so, nvfx_surface_buffer(&zeta->base), 0,
rt_flags | NOUVEAU_BO_OR,
chan->vram->handle, chan->gart->handle);
so_method(so, eng3d, NV34TCL_ZETA_OFFSET, 1);
/* TODO: reverse engineer LMA */
so_reloc (so, nvfx_surface_buffer(&zeta->base),
zeta->base.offset, rt_flags | NOUVEAU_BO_LOW, 0, 0);
if(nvfx->is_nv4x) {
so_method(so, eng3d, NV40TCL_ZETA_PITCH, 1);
so_data (so, zeta->pitch);
}
}
so_method(so, eng3d, NV34TCL_RT_ENABLE, 1);
so_data (so, rt_enable);
so_method(so, eng3d, NV34TCL_RT_HORIZ, 3);
so_data (so, (w << 16) | 0);
so_data (so, (h << 16) | 0);
so_data (so, rt_format);
so_method(so, eng3d, NV34TCL_VIEWPORT_HORIZ, 2);
so_data (so, (w << 16) | 0);
so_data (so, (h << 16) | 0);
so_method(so, eng3d, NV34TCL_VIEWPORT_CLIP_HORIZ(0), 2);
so_data (so, ((w - 1) << 16) | 0);
so_data (so, ((h - 1) << 16) | 0);
so_method(so, eng3d, 0x1d88, 1);
so_data (so, (1 << 12) | h);
if(!nvfx->is_nv4x) {
/* Wonder why this is needed, context should all be set to zero on init */
/* TODO: we can most likely remove this, after putting it in context init */
so_method(so, eng3d, NV34TCL_VIEWPORT_TX_ORIGIN, 1);
so_data (so, 0);
}
so_ref(so, &nvfx->state.hw[NVFX_STATE_FB]);
so_ref(NULL, &so);
return TRUE;
}
struct nvfx_state_entry nvfx_state_framebuffer = {
.validate = nvfx_state_framebuffer_validate,
.dirty = {
.pipe = NVFX_NEW_FB,
.hw = NVFX_STATE_FB
}
};
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