diff options
Diffstat (limited to 'mesalib/src/mesa/state_tracker/st_texture.c')
| -rw-r--r-- | mesalib/src/mesa/state_tracker/st_texture.c | 316 |
1 files changed, 316 insertions, 0 deletions
diff --git a/mesalib/src/mesa/state_tracker/st_texture.c b/mesalib/src/mesa/state_tracker/st_texture.c new file mode 100644 index 000000000..4d4b238ef --- /dev/null +++ b/mesalib/src/mesa/state_tracker/st_texture.c @@ -0,0 +1,316 @@ +/**************************************************************************
+ *
+ * Copyright 2007 Tungsten Graphics, Inc., Cedar Park, Texas.
+ * All Rights Reserved.
+ *
+ * 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 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 TUNGSTEN GRAPHICS AND/OR ITS 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.
+ *
+ **************************************************************************/
+
+#include <stdio.h>
+
+#include "st_context.h"
+#include "st_format.h"
+#include "st_texture.h"
+#include "st_cb_fbo.h"
+#include "main/enums.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "util/u_inlines.h"
+#include "util/u_format.h"
+#include "util/u_rect.h"
+#include "util/u_math.h"
+
+
+#define DBG if(0) printf
+
+
+/**
+ * Allocate a new pipe_resource object
+ * width0, height0, depth0 are the dimensions of the level 0 image
+ * (the highest resolution). last_level indicates how many mipmap levels
+ * to allocate storage for. For non-mipmapped textures, this will be zero.
+ */
+struct pipe_resource *
+st_texture_create(struct st_context *st,
+ enum pipe_texture_target target,
+ enum pipe_format format,
+ GLuint last_level,
+ GLuint width0,
+ GLuint height0,
+ GLuint depth0,
+ GLuint bind )
+{
+ struct pipe_resource pt, *newtex;
+ struct pipe_screen *screen = st->pipe->screen;
+
+ assert(target < PIPE_MAX_TEXTURE_TYPES);
+ assert(width0 > 0);
+ assert(height0 > 0);
+ assert(depth0 > 0);
+
+ DBG("%s target %s format %s last_level %d\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(format), last_level);
+
+ assert(format);
+ assert(screen->is_format_supported(screen, format, target, 0,
+ PIPE_BIND_SAMPLER_VIEW, 0));
+
+ memset(&pt, 0, sizeof(pt));
+ pt.target = target;
+ pt.format = format;
+ pt.last_level = last_level;
+ pt.width0 = width0;
+ pt.height0 = height0;
+ pt.depth0 = depth0;
+ pt.array_size = (target == PIPE_TEXTURE_CUBE ? 6 : 1);
+ pt.usage = PIPE_USAGE_DEFAULT;
+ pt.bind = bind;
+ pt.flags = 0;
+
+ newtex = screen->resource_create(screen, &pt);
+
+ assert(!newtex || pipe_is_referenced(&newtex->reference));
+
+ return newtex;
+}
+
+
+/**
+ * Check if a texture image can be pulled into a unified mipmap texture.
+ */
+GLboolean
+st_texture_match_image(const struct pipe_resource *pt,
+ const struct gl_texture_image *image,
+ GLuint face, GLuint level)
+{
+ /* Images with borders are never pulled into mipmap textures.
+ */
+ if (image->Border)
+ return GL_FALSE;
+
+ /* Check if this image's format matches the established texture's format.
+ */
+ if (st_mesa_format_to_pipe_format(image->TexFormat) != pt->format)
+ return GL_FALSE;
+
+ /* Test if this image's size matches what's expected in the
+ * established texture.
+ */
+ if (image->Width != u_minify(pt->width0, level) ||
+ image->Height != u_minify(pt->height0, level) ||
+ image->Depth != u_minify(pt->depth0, level))
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+/**
+ * Map a texture image and return the address for a particular 2D face/slice/
+ * layer. The stImage indicates the cube face and mipmap level. The slice
+ * of the 3D texture is passed in 'zoffset'.
+ * \param usage one of the PIPE_TRANSFER_x values
+ * \param x, y, w, h the region of interest of the 2D image.
+ * \return address of mapping or NULL if any error
+ */
+GLubyte *
+st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
+ GLuint zoffset, enum pipe_transfer_usage usage,
+ GLuint x, GLuint y, GLuint w, GLuint h)
+{
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_resource *pt = stImage->pt;
+
+ DBG("%s \n", __FUNCTION__);
+
+ stImage->transfer = pipe_get_transfer(st->pipe, pt, stImage->level,
+ stImage->face + zoffset,
+ usage, x, y, w, h);
+
+ if (stImage->transfer)
+ return pipe_transfer_map(pipe, stImage->transfer);
+ else
+ return NULL;
+}
+
+
+void
+st_texture_image_unmap(struct st_context *st,
+ struct st_texture_image *stImage)
+{
+ struct pipe_context *pipe = st->pipe;
+
+ DBG("%s\n", __FUNCTION__);
+
+ pipe_transfer_unmap(pipe, stImage->transfer);
+
+ pipe->transfer_destroy(pipe, stImage->transfer);
+}
+
+
+
+/**
+ * Upload data to a rectangular sub-region. Lots of choices how to do this:
+ *
+ * - memcpy by span to current destination
+ * - upload data as new buffer and blit
+ *
+ * Currently always memcpy.
+ */
+static void
+st_surface_data(struct pipe_context *pipe,
+ struct pipe_transfer *dst,
+ unsigned dstx, unsigned dsty,
+ const void *src, unsigned src_stride,
+ unsigned srcx, unsigned srcy, unsigned width, unsigned height)
+{
+ void *map = pipe_transfer_map(pipe, dst);
+
+ assert(dst->resource);
+ util_copy_rect(map,
+ dst->resource->format,
+ dst->stride,
+ dstx, dsty,
+ width, height,
+ src, src_stride,
+ srcx, srcy);
+
+ pipe_transfer_unmap(pipe, dst);
+}
+
+
+/* Upload data for a particular image.
+ */
+void
+st_texture_image_data(struct st_context *st,
+ struct pipe_resource *dst,
+ GLuint face,
+ GLuint level,
+ void *src,
+ GLuint src_row_stride, GLuint src_image_stride)
+{
+ struct pipe_context *pipe = st->pipe;
+ GLuint depth = u_minify(dst->depth0, level);
+ GLuint i;
+ const GLubyte *srcUB = src;
+ struct pipe_transfer *dst_transfer;
+
+ DBG("%s\n", __FUNCTION__);
+
+ for (i = 0; i < depth; i++) {
+ dst_transfer = pipe_get_transfer(st->pipe, dst, level, face + i,
+ PIPE_TRANSFER_WRITE, 0, 0,
+ u_minify(dst->width0, level),
+ u_minify(dst->height0, level));
+
+ st_surface_data(pipe, dst_transfer,
+ 0, 0, /* dstx, dsty */
+ srcUB,
+ src_row_stride,
+ 0, 0, /* source x, y */
+ u_minify(dst->width0, level),
+ u_minify(dst->height0, level)); /* width, height */
+
+ pipe->transfer_destroy(pipe, dst_transfer);
+
+ srcUB += src_image_stride;
+ }
+}
+
+
+/**
+ * For debug only: get/print center pixel in the src resource.
+ */
+static void
+print_center_pixel(struct pipe_context *pipe, struct pipe_resource *src)
+{
+ struct pipe_transfer *xfer;
+ struct pipe_box region;
+ ubyte *map;
+
+ region.x = src->width0 / 2;
+ region.y = src->height0 / 2;
+ region.z = 0;
+ region.width = 1;
+ region.height = 1;
+ region.depth = 1;
+
+ xfer = pipe->get_transfer(pipe, src, 0, PIPE_TRANSFER_READ, ®ion);
+ map = pipe->transfer_map(pipe, xfer);
+
+ printf("center pixel: %d %d %d %d\n", map[0], map[1], map[2], map[3]);
+
+ pipe->transfer_unmap(pipe, xfer);
+ pipe->transfer_destroy(pipe, xfer);
+}
+
+
+/**
+ * Copy the image at level=0 in 'src' to the 'dst' resource at 'dstLevel'.
+ * This is used to copy mipmap images from one texture buffer to another.
+ * This typically happens when our initial guess at the total texture size
+ * is incorrect (see the guess_and_alloc_texture() function).
+ */
+void
+st_texture_image_copy(struct pipe_context *pipe,
+ struct pipe_resource *dst, GLuint dstLevel,
+ struct pipe_resource *src, GLuint srcLevel,
+ GLuint face)
+{
+ GLuint width = u_minify(dst->width0, dstLevel);
+ GLuint height = u_minify(dst->height0, dstLevel);
+ GLuint depth = u_minify(dst->depth0, dstLevel);
+ struct pipe_box src_box;
+ GLuint i;
+
+ assert(u_minify(src->width0, srcLevel) == width);
+ assert(u_minify(src->height0, srcLevel) == height);
+ assert(u_minify(src->depth0, srcLevel) == depth);
+
+ src_box.x = 0;
+ src_box.y = 0;
+ src_box.width = width;
+ src_box.height = height;
+ src_box.depth = 1;
+ /* Loop over 3D image slices */
+ /* could (and probably should) use "true" 3d box here -
+ but drivers can't quite handle it yet */
+ for (i = face; i < face + depth; i++) {
+ src_box.z = i;
+
+ if (0) {
+ print_center_pixel(pipe, src);
+ }
+
+ pipe->resource_copy_region(pipe,
+ dst,
+ dstLevel,
+ 0, 0, i,/* destX, Y, Z */
+ src,
+ srcLevel,
+ &src_box);
+ }
+}
+
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