1 files changed, 231 insertions, 0 deletions
diff --git a/src/gallium/drivers/r600/r600_texture.c b/src/gallium/drivers/r600/r600_texture.c
new file mode 100644
index 0000000000..7d94bbe510
--- /dev/null
+++ b/src/gallium/drivers/r600/r600_texture.c
@@ -0,0 +1,231 @@
+/*
+ * Copyright 2010 Jerome Glisse <glisse@freedesktop.org>
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * on the rights to use, copy, modify, merge, publish, distribute, sub
+ * license, and/or sell copies of the Software, and to permit persons to whom
+ * the Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice (including the next
+ * paragraph) shall be included in all copies or substantial portions of the
+ * Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
+ * THE AUTHOR(S) AND/OR THEIR SUPPLIERS BE LIABLE FOR ANY CLAIM,
+ * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
+ * OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE
+ * USE OR OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors:
+ *      Jerome Glisse
+ *      Corbin Simpson
+ */
+#include <pipe/p_screen.h>
+#include <util/u_format.h>
+#include <util/u_math.h>
+#include <util/u_inlines.h>
+#include <util/u_memory.h>
+#include "state_tracker/drm_api.h"
+#include "r600_screen.h"
+#include "r600_texture.h"
+
+extern struct u_resource_vtbl r600_texture_vtbl;
+
+unsigned long r600_texture_get_offset(struct r600_texture *rtex, unsigned level, unsigned zslice, unsigned face)
+{
+	unsigned long offset = rtex->offset[level];
+
+	switch (rtex->b.b.target) {
+	case PIPE_TEXTURE_3D:
+		assert(face == 0);
+		return offset + zslice * rtex->layer_size[level];
+	case PIPE_TEXTURE_CUBE:
+		assert(zslice == 0);
+		return offset + face * rtex->layer_size[level];
+	default:
+		assert(zslice == 0 && face == 0);
+		return offset;
+	}
+}
+
+static void r600_setup_miptree(struct r600_screen *rscreen, struct r600_texture *rtex)
+{
+	struct pipe_resource *ptex = &rtex->b.b;
+	unsigned long w, h, stride, size, layer_size, i, offset;
+
+	for (i = 0, offset = 0; i <= ptex->last_level; i++) {
+		w = u_minify(ptex->width0, i);
+		h = u_minify(ptex->height0, i);
+		stride = align(util_format_get_stride(ptex->format, w), 32);
+		layer_size = stride * h;
+		if (ptex->target == PIPE_TEXTURE_CUBE)
+			size = layer_size * 6;
+		else
+			size = layer_size * u_minify(ptex->depth0, i);
+		rtex->offset[i] = offset;
+		rtex->layer_size[i] = layer_size;
+		rtex->pitch[i] = stride / util_format_get_blocksize(ptex->format);
+		rtex->stride[i] = stride;
+		offset += align(size, 32);
+	}
+	rtex->size = offset;
+}
+
+struct pipe_resource *r600_texture_create(struct pipe_screen *screen,
+					  const struct pipe_resource *templ)
+{
+	struct r600_texture *rtex = CALLOC_STRUCT(r600_texture);
+	struct r600_screen *rscreen = r600_screen(screen);
+	struct pipe_resource templ_buf;
+
+	if (!rtex) {
+		return NULL;
+	}
+	rtex->b.b = *templ;
+	rtex->b.vtbl = &r600_texture_vtbl;
+	pipe_reference_init(&rtex->b.b.reference, 1);
+	rtex->b.b.screen = screen;
+	r600_setup_miptree(rscreen, rtex);
+
+	memset(&templ_buf, 0, sizeof(struct pipe_resource));
+	templ_buf.target = PIPE_BUFFER;
+	templ_buf.format = PIPE_FORMAT_R8_UNORM;
+	templ_buf.usage = templ->usage;
+	templ_buf.bind = templ->bind;
+	templ_buf.width0 = rtex->size;
+	templ_buf.height0 = 1;
+	templ_buf.depth0 = 1;
+
+	rtex->buffer = screen->resource_create(screen, &templ_buf);
+	if (!rtex->buffer) {
+		FREE(rtex);
+		return NULL;
+	}
+	return &rtex->b.b;
+}
+
+static void r600_texture_destroy(struct pipe_screen *screen,
+				 struct pipe_resource *ptex)
+{
+	struct r600_texture *rtex = (struct r600_texture*)ptex;
+
+	FREE(rtex);
+}
+
+static struct pipe_surface *r600_get_tex_surface(struct pipe_screen *screen,
+						struct pipe_resource *texture,
+						unsigned face, unsigned level,
+						unsigned zslice, unsigned flags)
+{
+	struct r600_texture *rtex = (struct r600_texture*)texture;
+	struct pipe_surface *surface = CALLOC_STRUCT(pipe_surface);
+	unsigned long offset;
+
+	if (surface == NULL)
+		return NULL;
+	offset = r600_texture_get_offset(rtex, level, zslice, face);
+	pipe_reference_init(&surface->reference, 1);
+	pipe_resource_reference(&surface->texture, texture);
+	surface->format = texture->format;
+	surface->width = u_minify(texture->width0, level);
+	surface->height = u_minify(texture->height0, level);
+	surface->offset = offset;
+	surface->usage = flags;
+	surface->zslice = zslice;
+	surface->texture = texture;
+	surface->face = face;
+	surface->level = level;
+	return surface;
+}
+
+static void r600_tex_surface_destroy(struct pipe_surface *surface)
+{
+	pipe_resource_reference(&surface->texture, NULL);
+	FREE(surface);
+}
+
+struct pipe_resource *r600_texture_from_handle(struct pipe_screen *screen,
+					       const struct pipe_resource *base,
+					       struct winsys_handle *whandle)
+{
+	struct pipe_resource *buffer;
+	struct r600_texture *rtex;
+
+	buffer = r600_buffer_from_handle(screen, whandle);
+	if (buffer == NULL) {
+		return NULL;
+	}
+
+	/* Support only 2D textures without mipmaps */
+	if (base->target != PIPE_TEXTURE_2D || base->depth0 != 1 || base->last_level != 0)
+		return NULL;
+
+	rtex = CALLOC_STRUCT(r600_texture);
+	if (rtex == NULL)
+		return NULL;
+
+	/* one ref already taken */
+	rtex->buffer = buffer;
+
+	rtex->b.b = *base;
+	rtex->b.vtbl = &r600_texture_vtbl;
+	pipe_reference_init(&rtex->b.b.reference, 1);
+	rtex->b.b.screen = screen;
+	rtex->stride_override = whandle->stride;
+	rtex->pitch[0] = whandle->stride / util_format_get_blocksize(base->format);
+	rtex->stride[0] = whandle->stride;
+	rtex->offset[0] = 0;
+	rtex->size = align(rtex->stride[0] * base->height0, 32);
+
+	return &rtex->b.b;
+}
+
+static boolean r600_texture_get_handle(struct pipe_screen* screen,
+				       struct pipe_resource *texture,
+				       struct winsys_handle *whandle)
+{
+	struct r600_screen *rscreen = r600_screen(screen);
+	struct r600_texture* rtex = (struct r600_texture*)texture;
+
+	if (!rtex) {
+		return FALSE;
+	}
+
+	whandle->stride = rtex->stride[0];
+
+	r600_buffer_get_handle(rscreen->rw, rtex->buffer, whandle);
+
+	return TRUE;
+}
+
+static unsigned int r600_texture_is_referenced(struct pipe_context *context,
+						struct pipe_resource *texture,
+						unsigned face, unsigned level)
+{
+	struct r600_texture *rtex = (struct r600_texture*)texture;
+
+	return r600_buffer_is_referenced_by_cs(context, rtex->buffer, face, level);
+}
+
+struct u_resource_vtbl r600_texture_vtbl =
+{
+	r600_texture_get_handle,	/* get_handle */
+	r600_texture_destroy,		/* resource_destroy */
+	r600_texture_is_referenced,	/* is_resource_referenced */
+	r600_texture_get_transfer,	/* get_transfer */
+	r600_texture_transfer_destroy,	/* transfer_destroy */
+	r600_texture_transfer_map,	/* transfer_map */
+	u_default_transfer_flush_region,/* transfer_flush_region */
+	r600_texture_transfer_unmap,	/* transfer_unmap */
+	u_default_transfer_inline_write	/* transfer_inline_write */
+};
+
+void r600_init_screen_texture_functions(struct pipe_screen *screen)
+{
+	screen->get_tex_surface = r600_get_tex_surface;
+	screen->tex_surface_destroy = r600_tex_surface_destroy;
+}