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Diffstat (limited to 'src/mesa/state_tracker/st_texture.c')
-rw-r--r--src/mesa/state_tracker/st_texture.c276
1 files changed, 276 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 "enums.h"
+
+#include "pipe/p_state.h"
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_util.h"
+#include "pipe/p_inlines.h"
+#include "pipe/p_winsys.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
+
+struct pipe_texture *
+st_texture_create(struct st_context *st,
+ unsigned target,
+ unsigned format,
+ GLenum internal_format,
+ GLuint first_level,
+ GLuint last_level,
+ GLuint width0,
+ GLuint height0,
+ GLuint depth0,
+ GLuint compress_byte)
+{
+ struct pipe_texture *pt = CALLOC_STRUCT(pipe_texture);
+
+ assert(target <= PIPE_TEXTURE_CUBE);
+
+ DBG("%s target %s format %s level %d..%d\n", __FUNCTION__,
+ _mesa_lookup_enum_by_nr(target),
+ _mesa_lookup_enum_by_nr(internal_format), first_level, last_level);
+
+ if (!pt)
+ return NULL;
+
+ assert(format);
+
+ pt->target = target;
+ pt->format = format;
+ pt->internal_format = internal_format;
+ pt->first_level = first_level;
+ pt->last_level = last_level;
+ pt->width[0] = width0;
+ pt->height[0] = height0;
+ pt->depth[0] = depth0;
+ pt->compressed = compress_byte ? 1 : 0;
+ pt->cpp = pt->compressed ? compress_byte : st_sizeof_format(format);
+ pt->refcount = 1;
+
+ st->pipe->texture_create(st->pipe, &pt);
+
+ return pt;
+}
+
+
+
+
+/* Can the 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(struct pipe_texture *pt,
+ 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 (image->InternalFormat != pt->internal_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)
+{
+ struct pipe_texture *pt = stImage->pt;
+ DBG("%s \n", __FUNCTION__);
+
+ stImage->surface = st->pipe->get_tex_surface(st->pipe, pt, stImage->face,
+ stImage->level, zoffset);
+
+ (void) st->pipe->region_map(st->pipe, stImage->surface->region);
+
+ return stImage->surface->region->map + stImage->surface->offset;
+}
+
+void
+st_texture_image_unmap(struct st_context *st, struct st_texture_image *stImage)
+{
+ DBG("%s\n", __FUNCTION__);
+
+ st->pipe->region_unmap(st->pipe, stImage->surface->region);
+
+ pipe_surface_reference(&stImage->surface, NULL);
+}
+
+
+
+/* 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_pitch, GLuint src_image_pitch)
+{
+ GLuint depth = dst->depth[level];
+ GLuint i;
+ GLuint height = 0;
+ const GLubyte *srcUB = src;
+ struct pipe_surface *dst_surface;
+
+ DBG("%s\n", __FUNCTION__);
+ for (i = 0; i < depth; i++) {
+ height = dst->height[level];
+ if(dst->compressed)
+ height /= 4;
+
+ dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
+
+ pipe->surface_data(pipe, dst_surface,
+ 0, 0, /* dstx, dsty */
+ srcUB,
+ src_row_pitch,
+ 0, 0, /* source x, y */
+ dst->width[level], height); /* width, height */
+
+ pipe_surface_reference(&dst_surface, NULL);
+
+ srcUB += src_image_pitch * dst->cpp;
+ }
+}
+
+/* Copy mipmap image between textures
+ */
+void
+st_texture_image_copy(struct pipe_context *pipe,
+ struct pipe_texture *dst,
+ GLuint face, GLuint level,
+ struct pipe_texture *src)
+{
+ GLuint width = src->width[level];
+ GLuint height = src->height[level];
+ GLuint depth = src->depth[level];
+ struct pipe_surface *src_surface;
+ struct pipe_surface *dst_surface;
+ GLuint i;
+
+ if (dst->compressed)
+ height /= 4;
+ for (i = 0; i < depth; i++) {
+ dst_surface = pipe->get_tex_surface(pipe, dst, face, level, i);
+ src_surface = pipe->get_tex_surface(pipe, src, face, level, i);
+
+ pipe->surface_copy(pipe,
+ dst_surface,
+ 0, 0, /* destX, Y */
+ src_surface,
+ 0, 0, /* srcX, Y */
+ width, height);
+
+ pipe_surface_reference(&dst_surface, NULL);
+ pipe_surface_reference(&src_surface, NULL);
+ }
+
+}
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