summaryrefslogtreecommitdiff
path: root/src/mesa/state_tracker/st_gen_mipmap.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/mesa/state_tracker/st_gen_mipmap.c')
-rw-r--r--src/mesa/state_tracker/st_gen_mipmap.c204
1 files changed, 204 insertions, 0 deletions
diff --git a/src/mesa/state_tracker/st_gen_mipmap.c b/src/mesa/state_tracker/st_gen_mipmap.c
new file mode 100644
index 0000000000..6db9bc0dd5
--- /dev/null
+++ b/src/mesa/state_tracker/st_gen_mipmap.c
@@ -0,0 +1,204 @@
+/**************************************************************************
+ *
+ * Copyright 2008 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 "main/imports.h"
+#include "main/mipmap.h"
+#include "main/teximage.h"
+#include "main/texformat.h"
+
+#include "shader/prog_instruction.h"
+
+#include "pipe/p_context.h"
+#include "pipe/p_defines.h"
+#include "pipe/p_inlines.h"
+#include "util/u_gen_mipmap.h"
+
+#include "cso_cache/cso_cache.h"
+#include "cso_cache/cso_context.h"
+
+#include "st_context.h"
+#include "st_draw.h"
+#include "st_gen_mipmap.h"
+#include "st_program.h"
+#include "st_texture.h"
+#include "st_cb_texture.h"
+
+
+/**
+ * one-time init for generate mipmap
+ * XXX Note: there may be other times we need no-op/simple state like this.
+ * In that case, some code refactoring would be good.
+ */
+void
+st_init_generate_mipmap(struct st_context *st)
+{
+ st->gen_mipmap = util_create_gen_mipmap(st->pipe, st->cso_context);
+}
+
+
+void
+st_destroy_generate_mipmap(struct st_context *st)
+{
+ util_destroy_gen_mipmap(st->gen_mipmap);
+ st->gen_mipmap = NULL;
+}
+
+
+/**
+ * Generate mipmap levels using hardware rendering.
+ * \return TRUE if successful, FALSE if not possible
+ */
+static boolean
+st_render_mipmap(struct st_context *st,
+ GLenum target,
+ struct pipe_texture *pt,
+ uint baseLevel, uint lastLevel)
+{
+ struct pipe_context *pipe = st->pipe;
+ struct pipe_screen *screen = pipe->screen;
+ const uint face = _mesa_tex_target_to_face(target);
+
+ assert(target != GL_TEXTURE_3D); /* not done yet */
+
+ /* check if we can render in the texture's format */
+ if (!screen->is_format_supported(screen, pt->format, target,
+ PIPE_TEXTURE_USAGE_RENDER_TARGET, 0)) {
+ return FALSE;
+ }
+
+ util_gen_mipmap(st->gen_mipmap, pt, face, baseLevel, lastLevel,
+ PIPE_TEX_FILTER_LINEAR);
+
+ return TRUE;
+}
+
+
+static void
+fallback_generate_mipmap(GLcontext *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ struct pipe_context *pipe = ctx->st->pipe;
+ struct pipe_screen *screen = pipe->screen;
+ struct pipe_texture *pt = st_get_texobj_texture(texObj);
+ const uint baseLevel = texObj->BaseLevel;
+ const uint lastLevel = pt->last_level;
+ const uint face = _mesa_tex_target_to_face(target), zslice = 0;
+ uint dstLevel;
+ GLenum datatype;
+ GLuint comps;
+
+ assert(target != GL_TEXTURE_3D); /* not done yet */
+
+ _mesa_format_to_type_and_comps(texObj->Image[face][baseLevel]->TexFormat,
+ &datatype, &comps);
+
+ for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
+ const uint srcLevel = dstLevel - 1;
+ struct pipe_surface *srcSurf, *dstSurf;
+ const ubyte *srcData;
+ ubyte *dstData;
+
+ srcSurf = screen->get_tex_surface(screen, pt, face, srcLevel, zslice,
+ PIPE_BUFFER_USAGE_CPU_READ);
+ dstSurf = screen->get_tex_surface(screen, pt, face, dstLevel, zslice,
+ PIPE_BUFFER_USAGE_CPU_WRITE);
+
+ srcData = (ubyte *) pipe_buffer_map(pipe, srcSurf->buffer,
+ PIPE_BUFFER_USAGE_CPU_READ)
+ + srcSurf->offset;
+ dstData = (ubyte *) pipe_buffer_map(pipe, dstSurf->buffer,
+ PIPE_BUFFER_USAGE_CPU_WRITE)
+ + dstSurf->offset;
+
+ _mesa_generate_mipmap_level(target, datatype, comps,
+ 0 /*border*/,
+ pt->width[srcLevel], pt->height[srcLevel], pt->depth[srcLevel],
+ srcSurf->stride, /* stride in bytes */
+ srcData,
+ pt->width[dstLevel], pt->height[dstLevel], pt->depth[dstLevel],
+ dstSurf->stride, /* stride in bytes */
+ dstData);
+
+ pipe_buffer_unmap(pipe, srcSurf->buffer);
+ pipe_buffer_unmap(pipe, dstSurf->buffer);
+
+ pipe_surface_reference(&srcSurf, NULL);
+ pipe_surface_reference(&dstSurf, NULL);
+ }
+}
+
+
+void
+st_generate_mipmap(GLcontext *ctx, GLenum target,
+ struct gl_texture_object *texObj)
+{
+ struct st_context *st = ctx->st;
+ struct pipe_texture *pt = st_get_texobj_texture(texObj);
+ const uint baseLevel = texObj->BaseLevel;
+ const uint lastLevel = pt->last_level;
+ uint dstLevel;
+
+ if (!st_render_mipmap(st, target, pt, baseLevel, lastLevel)) {
+ fallback_generate_mipmap(ctx, target, texObj);
+ }
+
+ /* Fill in the Mesa gl_texture_image fields */
+ for (dstLevel = baseLevel + 1; dstLevel <= lastLevel; dstLevel++) {
+ const uint srcLevel = dstLevel - 1;
+ const struct gl_texture_image *srcImage
+ = _mesa_get_tex_image(ctx, texObj, target, srcLevel);
+ struct gl_texture_image *dstImage;
+ struct st_texture_image *stImage;
+ uint dstWidth = pt->width[dstLevel];
+ uint dstHeight = pt->height[dstLevel];
+ uint dstDepth = pt->depth[dstLevel];
+ uint border = srcImage->Border;
+
+ dstImage = _mesa_get_tex_image(ctx, texObj, target, dstLevel);
+ if (!dstImage) {
+ _mesa_error(ctx, GL_OUT_OF_MEMORY, "generating mipmaps");
+ return;
+ }
+
+ if (dstImage->ImageOffsets)
+ _mesa_free(dstImage->ImageOffsets);
+
+ /* Free old image data */
+ if (dstImage->Data)
+ ctx->Driver.FreeTexImageData(ctx, dstImage);
+
+ /* initialize new image */
+ _mesa_init_teximage_fields(ctx, target, dstImage, dstWidth, dstHeight,
+ dstDepth, border, srcImage->InternalFormat);
+
+ dstImage->TexFormat = srcImage->TexFormat;
+
+ stImage = (struct st_texture_image *) dstImage;
+ pipe_texture_reference(&stImage->pt, pt);
+ }
+}
generated by cgit v1.2.3 (git 2.39.1) at 2024-05-23 07:23:05 +0000