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-rw-r--r--src/mesa/state_tracker/st_texture.c353
1 files changed, 353 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_texture.c b/src/mesa/state_tracker/st_texture.c
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+/**************************************************************************
+ *
+ * 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 "st_context.h"
+#include "st_format.h"
+#include "st_texture.h"
+#include "main/enums.h"
+
+#undef Elements /* fix re-defined macro warning */
+
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_inlines.h"
+#include "util/u_rect.h"
+
+
+#define DBG if(0) printf
+
+#if 0
+static GLenum
+target_to_target(GLenum target)
+{
+ switch (target) {
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_X_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Y_ARB:
+ case GL_TEXTURE_CUBE_MAP_POSITIVE_Z_ARB:
+ case GL_TEXTURE_CUBE_MAP_NEGATIVE_Z_ARB:
+ return GL_TEXTURE_CUBE_MAP_ARB;
+ default:
+ return target;
+ }
+}
+#endif
+
+
+/**
+ * Allocate a new pipe_texture 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_texture *
+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 compress_byte,
+ GLuint usage )
+{
+ struct pipe_texture pt, *newtex;
+ struct pipe_screen *screen = st->pipe->screen;
+
+ assert(target <= PIPE_TEXTURE_CUBE);
+
+ 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,
+ PIPE_TEXTURE_USAGE_SAMPLER, 0));
+
+ memset(&pt, 0, sizeof(pt));
+ pt.target = target;
+ pt.format = format;
+ pt.last_level = last_level;
+ pt.width[0] = width0;
+ pt.height[0] = height0;
+ pt.depth[0] = depth0;
+ pt.compressed = compress_byte ? 1 : 0;
+ pf_get_block(format, &pt.block);
+ pt.tex_usage = usage;
+
+ newtex = screen->texture_create(screen, &pt);
+
+ assert(!newtex || newtex->refcount == 1);
+
+ return newtex;
+}
+
+
+/**
+ * Check if a texture image be pulled into a unified mipmap texture.
+ * This mirrors the completeness test in a lot of ways.
+ *
+ * Not sure whether I want to pass gl_texture_image here.
+ */
+GLboolean
+st_texture_match_image(const struct pipe_texture *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;
+
+ if (st_mesa_format_to_pipe_format(image->TexFormat->MesaFormat) != pt->format ||
+ image->IsCompressed != pt->compressed)
+ return GL_FALSE;
+
+ /* Test image dimensions against the base level image adjusted for
+ * minification. This will also catch images not present in the
+ * texture, changed targets, etc.
+ */
+ if (image->Width != pt->width[level] ||
+ image->Height != pt->height[level] ||
+ image->Depth != pt->depth[level])
+ return GL_FALSE;
+
+ return GL_TRUE;
+}
+
+
+#if 000
+/* Although we use the image_offset[] array to store relative offsets
+ * to cube faces, Mesa doesn't know anything about this and expects
+ * each cube face to be treated as a separate image.
+ *
+ * These functions present that view to mesa:
+ */
+const GLuint *
+st_texture_depth_offsets(struct pipe_texture *pt, GLuint level)
+{
+ static const GLuint zero = 0;
+
+ if (pt->target != PIPE_TEXTURE_3D || pt->level[level].nr_images == 1)
+ return &zero;
+ else
+ return pt->level[level].image_offset;
+}
+
+
+/**
+ * Return the offset to the given mipmap texture image within the
+ * texture memory buffer, in bytes.
+ */
+GLuint
+st_texture_image_offset(const struct pipe_texture * pt,
+ GLuint face, GLuint level)
+{
+ if (pt->target == PIPE_TEXTURE_CUBE)
+ return (pt->level[level].level_offset +
+ pt->level[level].image_offset[face] * pt->cpp);
+ else
+ return pt->level[level].level_offset;
+}
+#endif
+
+
+/**
+ * Map a teximage in a mipmap texture.
+ * \param row_stride returns row stride in bytes
+ * \param image_stride returns image stride in bytes (for 3D textures).
+ * \return address of mapping
+ */
+GLubyte *
+st_texture_image_map(struct st_context *st, struct st_texture_image *stImage,
+ GLuint zoffset,
+ GLuint flags )
+{
+ struct pipe_screen *screen = st->pipe->screen;
+ struct pipe_texture *pt = stImage->pt;
+ DBG("%s \n", __FUNCTION__);
+
+ stImage->surface = screen->get_tex_surface(screen, pt, stImage->face,
+ stImage->level, zoffset,
+ flags);
+
+ if (stImage->surface)
+ return screen->surface_map(screen, stImage->surface, flags);
+ else
+ return NULL;
+}
+
+
+void
+st_texture_image_unmap(struct st_context *st,
+ struct st_texture_image *stImage)
+{
+ struct pipe_screen *screen = st->pipe->screen;
+
+ DBG("%s\n", __FUNCTION__);
+
+ screen->surface_unmap(screen, stImage->surface);
+
+ pipe_surface_reference(&stImage->surface, NULL);
+}
+
+
+
+/**
+ * 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_surface *dst,
+ unsigned dstx, unsigned dsty,
+ const void *src, unsigned src_stride,
+ unsigned srcx, unsigned srcy, unsigned width, unsigned height)
+{
+ struct pipe_screen *screen = pipe->screen;
+ void *map = screen->surface_map(screen, dst, PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ pipe_copy_rect(map,
+ &dst->block,
+ dst->stride,
+ dstx, dsty,
+ width, height,
+ src, src_stride,
+ srcx, srcy);
+
+ screen->surface_unmap(screen, dst);
+}
+
+
+/* Upload data for a particular image.
+ */
+void
+st_texture_image_data(struct pipe_context *pipe,
+ struct pipe_texture *dst,
+ GLuint face,
+ GLuint level,
+ void *src,
+ GLuint src_row_stride, GLuint src_image_stride)
+{
+ struct pipe_screen *screen = pipe->screen;
+ GLuint depth = dst->depth[level];
+ GLuint i;
+ const GLubyte *srcUB = src;
+ struct pipe_surface *dst_surface;
+
+ DBG("%s\n", __FUNCTION__);
+ for (i = 0; i < depth; i++) {
+ dst_surface = screen->get_tex_surface(screen, dst, face, level, i,
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ st_surface_data(pipe, dst_surface,
+ 0, 0, /* dstx, dsty */
+ srcUB,
+ src_row_stride,
+ 0, 0, /* source x, y */
+ dst->width[level], dst->height[level]); /* width, height */
+
+ screen->tex_surface_release(screen, &dst_surface);
+
+ srcUB += src_image_stride;
+ }
+}
+
+
+/* Copy mipmap image between textures
+ */
+void
+st_texture_image_copy(struct pipe_context *pipe,
+ struct pipe_texture *dst, GLuint dstLevel,
+ struct pipe_texture *src,
+ GLuint face)
+{
+ struct pipe_screen *screen = pipe->screen;
+ GLuint width = dst->width[dstLevel];
+ GLuint height = dst->height[dstLevel];
+ GLuint depth = dst->depth[dstLevel];
+ struct pipe_surface *src_surface;
+ struct pipe_surface *dst_surface;
+ GLuint i;
+
+ /* XXX this is a hack */
+ const GLuint copyHeight = dst->compressed ? height / 4 : height;
+
+ for (i = 0; i < depth; i++) {
+ GLuint srcLevel;
+
+ /* find src texture level of needed size */
+ for (srcLevel = 0; srcLevel <= src->last_level; srcLevel++) {
+ if (src->width[srcLevel] == width &&
+ src->height[srcLevel] == height) {
+ break;
+ }
+ }
+ assert(src->width[srcLevel] == width);
+ assert(src->height[srcLevel] == height);
+
+#if 0
+ {
+ src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ ubyte *map = screen->surface_map(screen, src_surface, PIPE_BUFFER_USAGE_CPU_READ);
+ map += src_surface->width * src_surface->height * 4 / 2;
+ printf("%s center pixel: %d %d %d %d (pt %p[%d] -> %p[%d])\n",
+ __FUNCTION__,
+ map[0], map[1], map[2], map[3],
+ src, srcLevel, dst, dstLevel);
+
+ screen->surface_unmap(screen, src_surface);
+ pipe_surface_reference(&src_surface, NULL);
+ }
+#endif
+
+ dst_surface = screen->get_tex_surface(screen, dst, face, dstLevel, i,
+ PIPE_BUFFER_USAGE_GPU_WRITE);
+
+ src_surface = screen->get_tex_surface(screen, src, face, srcLevel, i,
+ PIPE_BUFFER_USAGE_GPU_READ);
+
+ pipe->surface_copy(pipe,
+ FALSE,
+ dst_surface,
+ 0, 0, /* destX, Y */
+ src_surface,
+ 0, 0, /* srcX, Y */
+ width, copyHeight);
+
+ screen->tex_surface_release(screen, &src_surface);
+ screen->tex_surface_release(screen, &dst_surface);
+ }
+}
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