nv30, nv40: unify identical nv[34]0_transfer.c

1 files changed, 182 insertions, 0 deletions

diff --git a/src/gallium/drivers/nvfx/nvfx_transfer.c b/src/gallium/drivers/nvfx/nvfx_transfer.c
new file mode 100644
index 00000000000..409b354d582
--- /dev/null
+++ b/src/gallium/drivers/nvfx/nvfx_transfer.c
@@ -0,0 +1,182 @@
+#include "pipe/p_state.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_memory.h"
+#include "util/u_math.h"
+#include "nouveau/nouveau_winsys.h"
+#include "nvfx_context.h"
+#include "nvfx_screen.h"
+#include "nvfx_state.h"
+
+struct nvfx_transfer {
+	struct pipe_transfer base;
+	struct pipe_surface *surface;
+	boolean direct;
+};
+
+static void
+nvfx_compatible_transfer_tex(struct pipe_texture *pt, unsigned width, unsigned height,
+                             struct pipe_texture *template)
+{
+	memset(template, 0, sizeof(struct pipe_texture));
+	template->target = pt->target;
+	template->format = pt->format;
+	template->width0 = width;
+	template->height0 = height;
+	template->depth0 = 1;
+	template->last_level = 0;
+	template->nr_samples = pt->nr_samples;
+
+	template->tex_usage = PIPE_TEXTURE_USAGE_DYNAMIC |
+	                      NOUVEAU_TEXTURE_USAGE_LINEAR;
+}
+
+static struct pipe_transfer *
+nvfx_transfer_new(struct pipe_context *pcontext, struct pipe_texture *pt,
+		  unsigned face, unsigned level, unsigned zslice,
+		  enum pipe_transfer_usage usage,
+		  unsigned x, unsigned y, unsigned w, unsigned h)
+{
+        struct pipe_screen *pscreen = pcontext->screen;
+	struct nvfx_miptree *mt = (struct nvfx_miptree *)pt;
+	struct nvfx_transfer *tx;
+	struct pipe_texture tx_tex_template, *tx_tex;
+
+	tx = CALLOC_STRUCT(nvfx_transfer);
+	if (!tx)
+		return NULL;
+
+	pipe_texture_reference(&tx->base.texture, pt);
+	tx->base.x = x;
+	tx->base.y = y;
+	tx->base.width = w;
+	tx->base.height = h;
+	tx->base.stride = mt->level[level].pitch;
+	tx->base.usage = usage;
+	tx->base.face = face;
+	tx->base.level = level;
+	tx->base.zslice = zslice;
+
+	/* Direct access to texture */
+	if ((pt->tex_usage & PIPE_TEXTURE_USAGE_DYNAMIC ||
+	     debug_get_bool_option("NOUVEAU_NO_TRANSFER", TRUE/*XXX:FALSE*/)) &&
+	    pt->tex_usage & NOUVEAU_TEXTURE_USAGE_LINEAR)
+	{
+		tx->direct = true;
+		tx->surface = pscreen->get_tex_surface(pscreen, pt,
+	                                               face, level, zslice,
+	                                               pipe_transfer_buffer_flags(&tx->base));
+		return &tx->base;
+	}
+
+	tx->direct = false;
+
+	nvfx_compatible_transfer_tex(pt, w, h, &tx_tex_template);
+
+	tx_tex = pscreen->texture_create(pscreen, &tx_tex_template);
+	if (!tx_tex)
+	{
+		FREE(tx);
+		return NULL;
+	}
+
+	tx->base.stride = ((struct nvfx_miptree*)tx_tex)->level[0].pitch;
+
+	tx->surface = pscreen->get_tex_surface(pscreen, tx_tex,
+	                                       0, 0, 0,
+	                                       pipe_transfer_buffer_flags(&tx->base));
+
+	pipe_texture_reference(&tx_tex, NULL);
+
+	if (!tx->surface)
+	{
+		pipe_surface_reference(&tx->surface, NULL);
+		FREE(tx);
+		return NULL;
+	}
+
+	if (usage & PIPE_TRANSFER_READ) {
+		struct nvfx_screen *nvscreen = nvfx_screen(pscreen);
+		struct pipe_surface *src;
+
+		src = pscreen->get_tex_surface(pscreen, pt,
+	                                       face, level, zslice,
+	                                       PIPE_BUFFER_USAGE_GPU_READ);
+
+		/* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
+		/* TODO: Check if SIFM can un-swizzle */
+		nvscreen->eng2d->copy(nvscreen->eng2d,
+		                      tx->surface, 0, 0,
+		                      src, x, y,
+		                      w, h);
+
+		pipe_surface_reference(&src, NULL);
+	}
+
+	return &tx->base;
+}
+
+static void
+nvfx_transfer_del(struct pipe_context *pcontext,
+                  struct pipe_transfer *ptx)
+{
+	struct nvfx_transfer *tx = (struct nvfx_transfer *)ptx;
+
+	if (!tx->direct && (ptx->usage & PIPE_TRANSFER_WRITE)) {
+		struct pipe_screen *pscreen = pcontext->screen;
+		struct nvfx_screen *nvscreen = nvfx_screen(pscreen);
+		struct pipe_surface *dst;
+
+		dst = pscreen->get_tex_surface(pscreen, ptx->texture,
+	                                       ptx->face, ptx->level, ptx->zslice,
+	                                       PIPE_BUFFER_USAGE_GPU_WRITE | NOUVEAU_BUFFER_USAGE_NO_RENDER);
+
+		/* TODO: Check if SIFM can deal with x,y,w,h when swizzling */
+		nvscreen->eng2d->copy(nvscreen->eng2d,
+		                      dst, tx->base.x, tx->base.y,
+		                      tx->surface, 0, 0,
+		                      tx->base.width, tx->base.height);
+
+		pipe_surface_reference(&dst, NULL);
+	}
+
+	pipe_surface_reference(&tx->surface, NULL);
+	pipe_texture_reference(&ptx->texture, NULL);
+	FREE(ptx);
+}
+
+static void *
+nvfx_transfer_map(struct pipe_context *pcontext, struct pipe_transfer *ptx)
+{
+        struct pipe_screen *pscreen = pcontext->screen;
+	struct nvfx_transfer *tx = (struct nvfx_transfer *)ptx;
+	struct nv04_surface *ns = (struct nv04_surface *)tx->surface;
+	struct nvfx_miptree *mt = (struct nvfx_miptree *)tx->surface->texture;
+	void *map = pipe_buffer_map(pscreen, mt->buffer,
+	                            pipe_transfer_buffer_flags(ptx));
+
+	if(!tx->direct)
+		return map + ns->base.offset;
+	else
+		return map + ns->base.offset + ptx->y * ns->pitch + ptx->x * util_format_get_blocksize(ptx->texture->format);
+}
+
+static void
+nvfx_transfer_unmap(struct pipe_context *pcontext, struct pipe_transfer *ptx)
+{
+	struct pipe_screen *pscreen = pcontext->screen;
+	struct nvfx_transfer *tx = (struct nvfx_transfer *)ptx;
+	struct nvfx_miptree *mt = (struct nvfx_miptree *)tx->surface->texture;
+
+	pipe_buffer_unmap(pscreen, mt->buffer);
+}
+
+void
+nvfx_init_transfer_functions(struct nvfx_context *nvfx)
+{
+	nvfx->pipe.get_tex_transfer = nvfx_transfer_new;
+	nvfx->pipe.tex_transfer_destroy = nvfx_transfer_del;
+	nvfx->pipe.transfer_map = nvfx_transfer_map;
+	nvfx->pipe.transfer_unmap = nvfx_transfer_unmap;
+}