nv30, nv40: non-trivially unify nv[34]0_state_fb.c

The files are significantly different due to:
1. nv30 support 2 render targets, nv40 4
2. z-buffer pitch is set differently
3. nv30 has a limitation of colour_bits >= zeta_bits. This may not
   actually exist in the driver though
4. nv30 points color0 at depth in the depth-only case
5. nv30 sets NV34TCL_VIEWPORT_TX_ORIGIN to 0. This is probably
   unnecessary

This patch attempts to unify the two files and preserve the existing
behavior.

3 files changed, 0 insertions, 175 deletions

diff --git a/src/gallium/drivers/nv30/Makefile b/src/gallium/drivers/nv30/Makefile
index 6ee0d8f248a..b5728a34f83 100644
--- a/src/gallium/drivers/nv30/Makefile
+++ b/src/gallium/drivers/nv30/Makefile
@@ -10,7 +10,6 @@ C_SOURCES = \
 	nv30_fragtex.c \
 	nv30_screen.c \
 	nv30_state.c \
-	nv30_state_fb.c \
 	nv30_vbo.c \
 	nv30_vertprog.c
 
diff --git a/src/gallium/drivers/nv30/nv30_context.h b/src/gallium/drivers/nv30/nv30_context.h
index 37def47b61d..c203425cc91 100644
--- a/src/gallium/drivers/nv30/nv30_context.h
+++ b/src/gallium/drivers/nv30/nv30_context.h
@@ -22,7 +22,6 @@ extern void nv30_fragtex_bind(struct nvfx_context *);
 /* nv30_state.c and friends */
 extern struct nvfx_state_entry nv30_state_fragprog;
 extern struct nvfx_state_entry nv30_state_vertprog;
-extern struct nvfx_state_entry nv30_state_framebuffer;
 extern struct nvfx_state_entry nv30_state_fragtex;
 extern struct nvfx_state_entry nv30_state_vbo;
 
diff --git a/src/gallium/drivers/nv30/nv30_state_fb.c b/src/gallium/drivers/nv30/nv30_state_fb.c
deleted file mode 100644
index e9e215dccea..00000000000
--- a/src/gallium/drivers/nv30/nv30_state_fb.c
+++ /dev/null
@@ -1,173 +0,0 @@
-#include "nv30_context.h"
-#include "nouveau/nouveau_util.h"
-
-static boolean
-nv30_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[2], *zeta = NULL;
-	uint32_t rt_enable = 0, rt_format = 0;
-	int i, colour_format = 0, zeta_format = 0, depth_only = 0;
-	struct nouveau_stateobj *so = so_new(12, 18, 10);
-	unsigned rt_flags = NOUVEAU_BO_RDWR | NOUVEAU_BO_VRAM;
-	unsigned w = fb->width;
-	unsigned h = fb->height;
-	struct nvfx_miptree *nv30mt;
-	int colour_bits = 32, zeta_bits = 32;
-
-	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)
-		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)) {
-		/* 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_S8Z24_UNORM:
-	case PIPE_FORMAT_X8Z24_UNORM:
-	case 0:
-		rt_format |= NV34TCL_RT_FORMAT_ZETA_Z24S8;
-		break;
-	default:
-		assert(0);
-	}
-
-	if (colour_bits > zeta_bits) {
-		return FALSE;
-	}
-
-	if (depth_only || (rt_enable & NV34TCL_RT_ENABLE_COLOR0)) {
-		struct nv04_surface *rt0 = (depth_only ? zeta : rt[0]);
-		uint32_t pitch = rt0->pitch;
-
-		if (zeta) {
-			pitch |= (zeta->pitch << 16);
-		} else {
-			pitch |= (pitch << 16);
-		}
-
-		nv30mt = (struct nvfx_miptree *) rt0->base.texture;
-		so_method(so, eng3d, NV34TCL_DMA_COLOR0, 1);
-		so_reloc (so, nouveau_bo(nv30mt->buffer), 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, nouveau_bo(nv30mt->buffer), rt0->base.offset,
-			      rt_flags | NOUVEAU_BO_LOW, 0, 0);
-	}
-
-	if (rt_enable & NV34TCL_RT_ENABLE_COLOR1) {
-		nv30mt = (struct nvfx_miptree *)rt[1]->base.texture;
-		so_method(so, eng3d, NV34TCL_DMA_COLOR1, 1);
-		so_reloc (so, nouveau_bo(nv30mt->buffer), 0, rt_flags | NOUVEAU_BO_OR,
-			      chan->vram->handle, chan->gart->handle);
-		so_method(so, eng3d, NV34TCL_COLOR1_OFFSET, 2);
-		so_reloc (so, nouveau_bo(nv30mt->buffer), rt[1]->base.offset,
-			      rt_flags | NOUVEAU_BO_LOW, 0, 0);
-		so_data  (so, rt[1]->pitch);
-	}
-
-	if (zeta_format) {
-		nv30mt = (struct nvfx_miptree *)zeta->base.texture;
-		so_method(so, eng3d, NV34TCL_DMA_ZETA, 1);
-		so_reloc (so, nouveau_bo(nv30mt->buffer), 0, rt_flags | NOUVEAU_BO_OR,
-			      chan->vram->handle, chan->gart->handle);
-		so_method(so, eng3d, NV34TCL_ZETA_OFFSET, 1);
-		so_reloc (so, nouveau_bo(nv30mt->buffer), zeta->base.offset,
-			      rt_flags | NOUVEAU_BO_LOW, 0, 0);
-		/* TODO: allocate LMA depth buffer */
-	}
-
-	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);
-	/* Wonder why this is needed, context should all be set to zero on 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 nv30_state_framebuffer = {
-	.validate = nv30_state_framebuffer_validate,
-	.dirty = {
-		.pipe = NVFX_NEW_FB,
-		.hw = NVFX_STATE_FB
-	}
-};