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Diffstat (limited to 'src/mesa/drivers/dri/i915tex/intel_tex_validate.c')
-rw-r--r--src/mesa/drivers/dri/i915tex/intel_tex_validate.c252
1 files changed, 252 insertions, 0 deletions
diff --git a/src/mesa/drivers/dri/i915tex/intel_tex_validate.c b/src/mesa/drivers/dri/i915tex/intel_tex_validate.c
new file mode 100644
index 0000000000..e273716b09
--- /dev/null
+++ b/src/mesa/drivers/dri/i915tex/intel_tex_validate.c
@@ -0,0 +1,252 @@
+#include "mtypes.h"
+#include "macros.h"
+
+#include "intel_context.h"
+#include "intel_mipmap_tree.h"
+#include "intel_tex.h"
+
+#define FILE_DEBUG_FLAG DEBUG_TEXTURE
+
+/**
+ * Compute which mipmap levels that really need to be sent to the hardware.
+ * This depends on the base image size, GL_TEXTURE_MIN_LOD,
+ * GL_TEXTURE_MAX_LOD, GL_TEXTURE_BASE_LEVEL, and GL_TEXTURE_MAX_LEVEL.
+ */
+static void
+intel_calculate_first_last_level(struct intel_texture_object *intelObj)
+{
+ struct gl_texture_object *tObj = &intelObj->base;
+ const struct gl_texture_image *const baseImage =
+ tObj->Image[0][tObj->BaseLevel];
+
+ /* These must be signed values. MinLod and MaxLod can be negative numbers,
+ * and having firstLevel and lastLevel as signed prevents the need for
+ * extra sign checks.
+ */
+ int firstLevel;
+ int lastLevel;
+
+ /* Yes, this looks overly complicated, but it's all needed.
+ */
+ switch (tObj->Target) {
+ case GL_TEXTURE_1D:
+ case GL_TEXTURE_2D:
+ case GL_TEXTURE_3D:
+ case GL_TEXTURE_CUBE_MAP:
+ if (tObj->MinFilter == GL_NEAREST || tObj->MinFilter == GL_LINEAR) {
+ /* GL_NEAREST and GL_LINEAR only care about GL_TEXTURE_BASE_LEVEL.
+ */
+ firstLevel = lastLevel = tObj->BaseLevel;
+ }
+ else {
+ firstLevel = tObj->BaseLevel + (GLint) (tObj->MinLod + 0.5);
+ firstLevel = MAX2(firstLevel, tObj->BaseLevel);
+ lastLevel = tObj->BaseLevel + (GLint) (tObj->MaxLod + 0.5);
+ lastLevel = MAX2(lastLevel, tObj->BaseLevel);
+ lastLevel = MIN2(lastLevel, tObj->BaseLevel + baseImage->MaxLog2);
+ lastLevel = MIN2(lastLevel, tObj->MaxLevel);
+ lastLevel = MAX2(firstLevel, lastLevel); /* need at least one level */
+ }
+ break;
+ case GL_TEXTURE_RECTANGLE_NV:
+ case GL_TEXTURE_4D_SGIS:
+ firstLevel = lastLevel = 0;
+ break;
+ default:
+ return;
+ }
+
+ /* save these values */
+ intelObj->firstLevel = firstLevel;
+ intelObj->lastLevel = lastLevel;
+}
+
+static void
+copy_image_data_to_tree(struct intel_context *intel,
+ struct intel_texture_object *intelObj,
+ struct intel_texture_image *intelImage)
+{
+ if (intelImage->mt) {
+ /* Copy potentially with the blitter:
+ */
+ intel_miptree_image_copy(intel,
+ intelObj->mt,
+ intelImage->face,
+ intelImage->level, intelImage->mt);
+
+ intel_miptree_release(intel, &intelImage->mt);
+ }
+ else {
+ assert(intelImage->base.Data != NULL);
+
+ /* More straightforward upload.
+ */
+ intel_miptree_image_data(intel,
+ intelObj->mt,
+ intelImage->face,
+ intelImage->level,
+ intelImage->base.Data,
+ intelImage->base.RowStride,
+ intelImage->base.RowStride *
+ intelImage->base.Height);
+ _mesa_align_free(intelImage->base.Data);
+ intelImage->base.Data = NULL;
+ }
+
+ intel_miptree_reference(&intelImage->mt, intelObj->mt);
+}
+
+
+/*
+ */
+GLuint
+intel_finalize_mipmap_tree(struct intel_context *intel, GLuint unit)
+{
+ struct gl_texture_object *tObj = intel->ctx.Texture.Unit[unit]._Current;
+ struct intel_texture_object *intelObj = intel_texture_object(tObj);
+
+ GLuint face, i;
+ GLuint nr_faces = 0;
+ struct intel_texture_image *firstImage;
+
+ /* We know/require this is true by now:
+ */
+ assert(intelObj->base.Complete);
+
+ /* What levels must the tree include at a minimum?
+ */
+ intel_calculate_first_last_level(intelObj);
+ firstImage =
+ intel_texture_image(intelObj->base.Image[0][intelObj->firstLevel]);
+
+ /* Fallback case:
+ */
+ if (firstImage->base.Border) {
+ if (intelObj->mt) {
+ intel_miptree_release(intel, &intelObj->mt);
+ }
+ return GL_FALSE;
+ }
+
+
+ /* If both firstImage and intelObj have a tree which can contain
+ * all active images, favour firstImage. Note that because of the
+ * completeness requirement, we know that the image dimensions
+ * will match.
+ */
+ if (firstImage->mt &&
+ firstImage->mt != intelObj->mt &&
+ firstImage->mt->first_level <= intelObj->firstLevel &&
+ firstImage->mt->last_level >= intelObj->lastLevel) {
+
+ if (intelObj->mt)
+ intel_miptree_release(intel, &intelObj->mt);
+
+ intel_miptree_reference(&intelObj->mt, firstImage->mt);
+ }
+
+ /* Check tree can hold all active levels. Check tree matches
+ * target, imageFormat, etc.
+ *
+ * XXX: For some layouts (eg i945?), the test might have to be
+ * first_level == firstLevel, as the tree isn't valid except at the
+ * original start level. Hope to get around this by
+ * programming minLod, maxLod, baseLevel into the hardware and
+ * leaving the tree alone.
+ */
+ if (intelObj->mt &&
+ ((intelObj->mt->first_level > intelObj->firstLevel) ||
+ (intelObj->mt->last_level < intelObj->lastLevel) ||
+ (intelObj->mt->internal_format != firstImage->base.InternalFormat))) {
+ intel_miptree_release(intel, &intelObj->mt);
+ }
+
+
+ /* May need to create a new tree:
+ */
+ if (!intelObj->mt) {
+ intelObj->mt = intel_miptree_create(intel,
+ intelObj->base.Target,
+ firstImage->base.InternalFormat,
+ intelObj->firstLevel,
+ intelObj->lastLevel,
+ firstImage->base.Width,
+ firstImage->base.Height,
+ firstImage->base.Depth,
+ firstImage->base.TexFormat->
+ TexelBytes,
+ firstImage->base.IsCompressed);
+ }
+
+ /* Pull in any images not in the object's tree:
+ */
+ nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+ for (face = 0; face < nr_faces; face++) {
+ for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
+ struct intel_texture_image *intelImage =
+ intel_texture_image(intelObj->base.Image[face][i]);
+
+ /* Need to import images in main memory or held in other trees.
+ */
+ if (intelObj->mt != intelImage->mt) {
+ copy_image_data_to_tree(intel, intelObj, intelImage);
+ }
+ }
+ }
+
+ return GL_TRUE;
+}
+
+
+
+void
+intel_tex_map_images(struct intel_context *intel,
+ struct intel_texture_object *intelObj)
+{
+ GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+ GLuint face, i;
+
+ DBG("%s\n", __FUNCTION__);
+
+ for (face = 0; face < nr_faces; face++) {
+ for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
+ struct intel_texture_image *intelImage =
+ intel_texture_image(intelObj->base.Image[face][i]);
+
+ if (intelImage->mt) {
+ intelImage->base.Data =
+ intel_miptree_image_map(intel,
+ intelImage->mt,
+ intelImage->face,
+ intelImage->level,
+ &intelImage->base.RowStride,
+ intelImage->base.ImageOffsets);
+ /* convert stride to texels, not bytes */
+ intelImage->base.RowStride /= intelImage->mt->cpp;
+/* intelImage->base.ImageStride /= intelImage->mt->cpp; */
+ }
+ }
+ }
+}
+
+
+
+void
+intel_tex_unmap_images(struct intel_context *intel,
+ struct intel_texture_object *intelObj)
+{
+ GLuint nr_faces = (intelObj->base.Target == GL_TEXTURE_CUBE_MAP) ? 6 : 1;
+ GLuint face, i;
+
+ for (face = 0; face < nr_faces; face++) {
+ for (i = intelObj->firstLevel; i <= intelObj->lastLevel; i++) {
+ struct intel_texture_image *intelImage =
+ intel_texture_image(intelObj->base.Image[face][i]);
+
+ if (intelImage->mt) {
+ intel_miptree_image_unmap(intel, intelImage->mt);
+ intelImage->base.Data = NULL;
+ }
+ }
+ }
+}